JP2006060615A - Wireless microphone system, sound transmitting and reproducing method, wireless microphone transmitter, sound transmitting method and program, receiver, and sound receiving and reproducing method and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless microphone technology that can realize a stable and highly accurate surround-sound effect which is hardly affected by environment such as the position and radio wave situation of a transmitter and receiver by specifying the standing position of a speaker with a transmitter, that is, a sound source position on the basis of position information from a position information transmitter installed beforehand at a plurality of places and allowing a receiving and reproducing side to control a sound image position in accordance with the sound source position. <P>SOLUTION: The position of a transmitter itself calculated by one wireless microphone transmitter M or more is transmitted to a reception system RS to realize a surround-sound effect on the basis of position information transmitted from a plurality of position information transmitters P. In the reception system RS, furthermore, an antenna divider D distributes respective received signals of antennas AA and AB to each receiver R in charge of each transmitter M, and a surround circuit S generates an output of each speaker SP on the basis of the audio output and position data of an individual transmitter. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement in wireless microphone technology.

  In recent years, with the advancement of electronics technology, wireless microphone systems used in various venues have become widespread. A conventional wireless microphone system simply transmits audio input to a wireless microphone transmitter (also referred to as a microphone transmitter or simply transmitter) to a receiver and reproduces the audio on the receiver side. The position of the sound source such as the standing position was not determined. For this reason, no matter where the speaker or the like moves in the podium or the venue, the sound is always reproduced from each speaker at the same volume.

On the other hand, in order to add a surround effect to the reproduced audio, multiple antennas on the receiver side are provided, and microphone transmission is performed based on differences in the electric field strength (reception level) of signal radio waves that reach each antenna from the transmitter. There is also a proposal for determining the position of the machine (see, for example, Patent Document 1).
JP-A-7-288512

  However, the difference in electric field strength varies depending on the relative position and angle between the antennas, surrounding radio wave conditions, noise and other environments, and there is a problem that the position determination accuracy is insufficient.

  The present invention solves the problems of the prior art as described above, and its purpose is to determine the standing position of a speaker having a transmitter based on position information from position information transmitters installed in several places in advance. In other words, by identifying the sound source position and controlling the sound image position on the reception and playback side accordingly, it is less affected by the environment such as the position of transmitters and receivers and radio wave conditions, and realizes a stable and highly accurate surround effect. It is to provide wireless microphone technology.

  In order to achieve the above object, a first aspect of the present invention is a wireless communication apparatus including a positional information transmitter that is installed at a plurality of locations and transmits different positional information, and transmitting side circuit means for voice input, modulation and radio wave transmission / reception In a wireless microphone system using a microphone transmitter and a receiver provided with reception-side circuit means for radio wave reception, demodulation and amplification output, the microphone transmitter transmits position information transmitted from each position information transmitter. The positional information receiving means for receiving and the positional information accompanied by the predetermined reception status information at the time of reception or the positional information indicating the position of the microphone transmitter calculated based on the positional information are transferred to the receiver together with audio information. Transfer means is realized by using the transmission side circuit means, and the receiver is located on the basis of the position information transmitted from the transmitter. A position recognizing means for recognizing the standing position, and a surround means for controlling the position of the sound image corresponding to the standing position by making the sound output of each of the plurality of speakers different from each other. It is realized by using.

  The invention of claim 8 captures the invention of claim 1 from the viewpoint of a method, a position information transmitter that is installed at a plurality of locations and transmits different position information, and voice input, modulation, and transmission / reception of radio waves In an audio transmission / reproduction method using a wireless microphone system including a wireless microphone transmitter including a side circuit means and a receiver including a reception side circuit means for receiving, demodulating and amplifying radio waves, the microphone transmitter includes: The position information receiving process for receiving position information transmitted from each position information transmitter, and the position information of the microphone transmitter calculated based on the position information with the predetermined reception state information at the time of reception. A transfer process for transferring the position information to the receiver together with the voice information using the transmitter circuit means, and the receiver transmits the signal from the transmitter. The position recognition processing for recognizing the standing position where the transmitter is located based on the position information and the sound output for each of the plurality of speakers are made different from each other, so that a sound image corresponding to the standing position is obtained. Surround processing for controlling the position is performed using the receiving-side circuit means.

  In the present invention, the standing position of the speaker having the transmitter, that is, the sound source position is specified based on the position information from the position information transmitters installed in several places in advance, and the sound image position on the reception and reproduction side is determined accordingly. By controlling, it becomes possible to provide a wireless microphone technology that is less affected by the environment such as the position of transmitters and receivers and radio wave conditions, and that can realize a stable and highly accurate surround effect.

  According to a second aspect of the present invention, in the wireless microphone system according to the first aspect, the transfer means of the microphone transmitter calculates the position of the microphone transmitter based on the received position information, and also includes audio information. The data is transferred to the receiver.

  A ninth aspect of the invention is an audio transmission / reproducing method according to the eighth aspect of the invention, wherein the transfer process in the microphone transmitter is based on the received position information. The position of the microphone transmitter is calculated and transferred to the receiver together with audio information.

  A wireless microphone transmitter according to claim 17 is the wireless microphone transmitter according to claims 2 and 9, which is viewed from the viewpoint of a single transmitter, and is used at a plurality of locations by using transmission side circuit means for voice input, modulation and radio wave transmission / reception. Position information receiving means for receiving different position information coming from each installed position information transmitter and obtaining reception status information of each position information, and the transmitter of the transmitter based on the position information and the reception status information And a transfer means for calculating a standing position and transferring position data representing the standing position together with audio information to an external receiver.

  The voice transmission method of claim 21 is based on the view of the invention of claim 17 as a method, and a wireless microphone transmitter having transmission side circuit means for voice input, modulation and radio wave transmission / reception is provided in the transmission side circuit. Position information receiving process for receiving different position information arriving from each position information transmitter installed at a plurality of locations and obtaining reception state information of each position information, and the position information and the reception state information. And calculating a standing position of the transmitter based on the above, and performing a transfer process of transferring position data representing the standing position together with audio information to an external receiver.

  An audio transmission program according to claim 25 is an embodiment of the invention according to claims 17 and 21 from the viewpoint of a computer program, and includes a CPU of a wireless microphone transmitter provided with transmission side circuit means for audio input, modulation, and radio wave transmission / reception. Position information reception processing for receiving different position information arriving from each position information transmitter installed at a plurality of locations and obtaining reception status information of each position information by using the transmission side circuit means by controlling , Calculating a standing position of the transmitter based on the position information and the reception status information, and executing transfer processing for transferring position data representing the standing position together with audio information to an external receiver. It is characterized by that.

  The receiver according to claim 18 is the receiver according to claims 2 and 9 from the viewpoint of a single receiver, and is received from the wireless microphone transmitter by using the reception side circuit means for radio wave reception, demodulation and amplification output. Means for demodulating and outputting the received voice from the information of the received voice, position recognition means for receiving the position data transmitted from the transmitter and extracting the standing position of the transmitter from the position data, and a plurality of each voice output Surrounding means for controlling the position of the sound image corresponding to the standing position is realized by making the audio output for each channel different from each other.

  The audio receiving and reproducing method of claim 22 is based on the view of the invention of claim 18 from the viewpoint of a method, and a receiver including receiving side circuit means for receiving, demodulating and amplifying output of the radio wave receives the receiving side circuit means. Using the process of demodulating and outputting the received voice from the voice information received from the wireless microphone transmitter, and receiving the position data transmitted from the transmitter and extracting the standing position of the transmitter from the position data A recognition process and a surround process for controlling the position of the sound image corresponding to the standing position by making the audio output for each of the plurality of audio output channels different from each other are executed.

  A sound reception / playback program according to a twenty-sixth aspect is obtained from the viewpoint of the computer program according to the eighteenth and twenty-second aspects of the invention, and controls a CPU of a receiver provided with reception-side circuit means for radio wave reception, demodulation, and amplification output. Thus, using the reception side circuit means, a process for demodulating and outputting the received voice from the information of the voice received from the wireless microphone transmitter, and receiving the position data transmitted from the transmitter, and from the position data A position recognition process for extracting the standing position of the transmitter, and a surround process for controlling the position of the sound image corresponding to the standing position by making the sound output for each of the plurality of sound output channels different from each other. It is characterized by that.

  In these aspects, further, the position calculation of the transmitter based on the position information from the position information transmitter is performed on the microphone transmitter side, thereby reducing the burden on the receiver side, manufacturing cost, reliability, volume, weight In addition to being excellent in this point, it becomes easy to cope with the modification of only the microphone transmitter side that is easy to carry even when the system is changed.

  According to a third aspect of the present invention, in the wireless microphone system according to the first aspect, the transfer means of the microphone transmitter transfers the received position information as it is together with voice information to the receiver, The position recognizing means calculates the position of the microphone transmitter based on the received position information.

  The invention of claim 10 captures the invention of claim 3 from the viewpoint of a method. In the audio transmission / reproduction method according to claim 8, the transfer processing in the microphone transmitter is configured to use the received position information as it is. It is transferred to the receiver together with voice information, and the position recognition processing in the receiver calculates the position of the microphone transmitter based on the transferred position information.

  The wireless microphone transmitter according to claim 15 is the wireless microphone transmitter according to claims 3 and 10 from the viewpoint of a single transmitter, and is installed at a plurality of locations by using transmission side circuit means for voice input, modulation and radio wave transmission / reception. Position information receiving means for receiving different position information arriving from each of the received position information transmitters and obtaining reception status information of each position information, and externally transmitting the position information together with audio information along with the reception status information And a transfer means for transmitting to the receiver.

  An audio transmission method according to claim 19 is an embodiment of the invention according to claim 15 taken from the viewpoint of a method. A wireless microphone transmitter provided with transmission side circuit means for voice input, modulation, and radio wave transmission / reception is provided on the transmission side circuit. Using the means, receiving position information different from each other that arrives from each of the position information transmitters installed at a plurality of locations, and obtaining the reception status information of each position information, accompanied by the reception status information And a transfer process for transmitting the position information together with audio information to an external receiver.

  A voice transmission program according to a twenty-third aspect captures the inventions according to the fifteenth and nineteenth aspects from a viewpoint of a computer program, and includes a CPU of a wireless microphone transmitter having transmission side circuit means for voice input, modulation, and radio wave transmission / reception. Position information reception processing for receiving different position information arriving from each position information transmitter installed at a plurality of locations and obtaining reception status information of each position information by using the transmission side circuit means by controlling And a transfer process for transmitting the position information together with audio information to an external receiver together with the reception status information.

  The receiver according to claim 16 is the receiver according to claims 3 and 10 from the viewpoint of a single receiver, and is received from the wireless microphone transmitter by using the reception side circuit means of radio wave reception, demodulation and amplification output. Means for demodulating and outputting received voice from voice information, and different position information from each of the position information transmitters installed at a plurality of locations, which are received by the transmitter and transferred together with the reception status information The position recognition means for calculating the standing position of the transmitter based on the position information and the reception status information and the sound output for each of the plurality of sound output channels are made different from each other. Thus, surround means for controlling the position of the sound image corresponding to the standing position is realized.

  An audio receiving / reproducing method of claim 20 is based on the view of the invention of claim 16 from the viewpoint of a method, and a receiver provided with receiving-side circuit means for receiving, demodulating and amplifying output of the radio wave receives the receiving-side circuit means. Using the process of demodulating and outputting the received voice from the voice information received from the wireless microphone transmitter, and different position information from each of the position information transmitters installed at a plurality of locations. Receiving what was retransmitted for transfer with reception status information, and position recognition processing to calculate the standing position of the transmitter based on the location information and reception status information, and a plurality of each voice output And surround processing for controlling the position of the sound image corresponding to the standing position by making the audio output for each channel different from each other.

  The audio reception / playback program according to claim 24 is a computer program according to the inventions of claims 16 and 20, and controls a CPU of a receiver provided with reception-side circuit means for radio wave reception, demodulation and amplification output. By using the receiving side circuit means, the process of demodulating the received voice from the information of the voice received from the wireless microphone transmitter and the different position information from each of the position information transmitters installed at a plurality of locations. A position where the transmitter receives and retransmits for transfer with the reception status information and calculates the standing position of the transmitter based on the position information and the reception status information. Surround that controls the position of the sound image corresponding to the standing position by making the recognition process different from the sound output for each of the plurality of sound output channels. Characterized in that to execute a sense, the.

  In these aspects, since the position calculation of the transmitter based on the position information from the position information transmitter is performed on the receiver side, the burden on the microphone transmitter is reduced, and the manufacturing cost, reliability, battery life, volume In addition to gaining advantages such as weight, it is possible to deal with system changes by modifying only the receiver.

  According to a fourth aspect of the present invention, in the wireless microphone system according to any one of the first to third aspects, the position information transmitter is a VCO (voltage controlled transmitter) according to position information stored in advance. The output from the UP (scan) converter controlled by the above is transmitted through the modulator and the Rf amplifier.

  An eleventh aspect of the invention is an audio transmission / reproducing method according to any one of the eighth to tenth aspects, wherein the position information transmitter is stored in advance. According to the positional information, the CPU transmits an output from an UP (scan) converter controlled by a VCO (voltage control oscillator) through a modulator and an Rf amplifier.

  In these aspects, the present invention can be easily and effectively performed cheaply by using a position information transmitter that operates stably with high accuracy by a simple configuration using a CPU, VCO, UP converter, modulator, and Rf amplifier. Can be implemented.

  According to a fifth aspect of the present invention, in the wireless microphone system according to the third or fourth aspect, the microphone transmitter shares information with a CPU and a receiving system for detecting position information and a microphone sharing a transmitting / receiving antenna with an antenna duplexer. The position information detection receiving system includes a transmission system, and the position information signal received from the antenna via the antenna duplexer is controlled by an Rf amplifier and the CPU controlled by a VCO (voltage controlled oscillator). (Scan) converter and at least one of a decoder or demodulator provides the CPU with position information and RSSI (received signal strength indication signal), and the CPU transmits the microphone from the position information and RSSI. Position data representing the position of the machine is calculated. Are processed by a microphone amplifier, an A / D converter, a modulator, an UP (scan) converter controlled by the CPU by a VCO (voltage control oscillator), and an Rf amplifier. Data is added and transmitted from the antenna via the antenna duplexer.

  The invention of claim 12 captures the invention of claim 5 from the viewpoint of a method. In the audio transmission / reproduction method according to claim 10 or 11, the microphone transmitter shares information with a CPU and antenna sharing. A position information detection reception system and a microphone transmission system that share a transmission / reception antenna, and the microphone transmitter receives the position information signal received from the antenna via the antenna duplexer by the position information detection reception system. Is processed by an Rf amplifier, a DOWN (scan) converter controlled by a VCO (voltage controlled oscillator) by the CPU, and at least one of a decoder or a demodulator, thereby obtaining position information and RSSI (received signal strength display). Signal) to the CPU, and the microphone transmitter receives the position information and RSSI by the CPU. Calculating the position data representing the position of the microphone transmitter, the microphone transmitter using the microphone transmission system, the input from the microphone, a microphone amplifier, an A / D converter, a modulator, and the CPU Is processed by an UP (scan) converter controlled by a VCO (voltage controlled oscillator) and an Rf amplifier, and the position data is added and transmitted from the antenna via the antenna duplexer.

  In these aspects, the reception system for detecting position information and the transmission system for microphone share a CPU with information and also share an antenna, thereby realizing a low-cost and compact microphone transmitter. It becomes possible to do.

  The invention according to claim 6 is the wireless microphone system according to any one of claims 1 to 5, wherein each antenna received in addition to the plurality of receivers corresponding to each of the plurality of microphone transmitters. Distribution means for distributing a signal for each microphone transmitter to each corresponding receiver, and surround synthesis for generating each speaker channel output based on audio output and position data for each microphone transmitter from each receiver Means.

  The invention of claim 13 captures the invention of claim 6 from the viewpoint of a method, is described in any one of claims 8 to 12, and each of the plurality of microphone transmitters corresponding to each of the plurality of microphone transmitters. In the audio transmission / reproduction method using the wireless microphone system including an antenna distributor and a surround synthesis circuit in addition to the receiver, the antenna distributor supports a signal for each microphone transmitter received by each antenna. The surround synthesis circuit generates a speaker channel output based on the audio output and position data for each microphone transmitter from each receiver. It is characterized by performing.

  In these aspects, by using dedicated receivers corresponding to each of the plurality of microphone transmitters, the standing position can be accurately recognized without mutual interference, while the set of receiving antennas and surround multi-channel speakers is Because it can be shared, multiple speakers and artists, each equipped with a microphone transmitter, can enjoy a surround effect full of realism at low cost and high reliability, even in applications where they can stand freely from each other. It becomes.

  According to a seventh aspect of the present invention, in the wireless microphone system according to the sixth aspect, the receiver is input from the distribution unit, and each DOWN (scan) controlled by the Rf amplifier and the CPU by a VCO (voltage control oscillator). Among the signals for each antenna processed by the converter and the decoder, the predetermined selection circuit selects one of the signals based on a predetermined criterion including at least one of a high reception level and a low data error rate. An audio signal portion included in the selected signal is output as an audio output through a D / A converter and an audio amplifier, and the position information obtained from the selected signal is processed by the CPU to indicate the position of the microphone transmitter. The position data to be represented is provided to the surround means.

  The invention of claim 14 captures the invention of claim 7 from the viewpoint of a method. In the audio transmission / reproduction method of claim 13, the receiver includes a selection circuit, and is input from the antenna distributor. Among the signals for each antenna processed by the Rf amplifier, each DOWN (scan) converter controlled by the VCO (voltage controlled oscillator) by the CPU, and the decoder, A signal is selected based on a predetermined criterion including at least one of low data error rates, and an audio signal portion included in the selected signal is set as an audio output through a D / A converter and an audio amplifier, and the selection is performed. The position information obtained from the processed signal is provided to the surround synthesis circuit as position data representing the position of the microphone transmitter through processing by the CPU. It is characterized in.

  In these aspects, the diversity effect using a signal having an excellent reception state among the plurality of antennas can realize a stable and highly accurate surround effect anytime and anywhere without the influence of the radio wave condition.

  In the present invention as described above, the standing position of the speaker having the transmitter, that is, the sound source position is specified based on the position information from the position information transmitters installed in several places in advance, and the reception and reproduction side accordingly By controlling the position of the sound image, it is possible to realize a stable and highly accurate surround effect without being affected by the environment such as the position of the transmitter or receiver and the radio wave condition.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings. The present embodiment includes a wireless microphone system as a whole system (hereinafter referred to as “the present system”), a voice transmission / reproduction method using the system, a wireless microphone transmitter as a single unit, a voice transmission method and program, and a receiver. It can also be grasped as a voice reception / playback method and program.

[1. (Schematic configuration)
As shown in the overall configuration diagram of FIG. 1, the present system is based on position information transmitted from a plurality of position information transmitters P (P1, P2,... P5). The position of the transmitter itself calculated by M (M1, M2... Mn) (also expressed as “microphone transmitter” or “microphone”) is transmitted to the receiving system RS to realize the surround effect. The receiving system RS further receives each received signal at the antennas AA and AB by an antenna divider (distributor) D and each receiver R (R1, R2... Rn) in charge of each transmitter M (M1, M2... Mn). And the output of each speaker SP (SP1, SP2,... SP5) is generated by the surround (synthesizing) circuit S based on the audio output and position data of each transmitter.

[2. Specific configuration and action)
[2-1. (Location information transmitter)
Specifically, first, each location information transmitter P is installed at a plurality of places around the stage or around the stage where the present system is used, and transmits different location information. As an example of the position information, the same number of position information transmitters P and speakers may be used, and an identification number corresponding to the speaker number corresponding to the reproduction may be considered. As an example of the position information transmitter P, as illustrated in FIG. 2, an output from an UP (scan) converter 24 that is controlled by a CPU 22 by a VCO (voltage control transmitter) 23 in accordance with position information 21 stored in advance. Is transmitted through the modulator 25 and the Rf amplifier 26. Thereby, for example, since the transmission frequency from each position information transmitter P is different, the position of the transmitter M can be specified from the electric field strength ratio of each frequency, for example.

[2-2. (Transmitter)
Each transmitter M includes transmission side circuit means for voice input, modulation, and radio wave transmission / reception, and position information for receiving position information transmitted from each position information transmitter P using the transmission side circuit means. Receiving means and transfer means for transferring the received position information to the receiver together with audio information are realized. Each position information is assumed to be accompanied by predetermined reception state information such as received signal strength such as RSSI and phase shift obtained at the time of reception.

  Here, as a specific configuration example, each microphone transmitter M, as illustrated in FIG. 3, receives a position information detection reception system K1 that shares information with the CPU 31 and shares the transmission / reception antenna 33 with the antenna duplexer 32. And the microphone transmission system K2, the system K1 is the position information receiving means, and the systems K1 and K2 constitute the transfer means.

  Among these, the position information detection receiving system K1 is configured such that the position information signal received from each position information transmitter P via the antenna 33 and the antenna duplexer 32 is received by the Rf amplifier 341 and the CPU 31 as a VCO (voltage control transmitter). The DOWN (scan) converter 361 controlled by 351 and at least one of the decoder or demodulator (371) are provided to the CPU 31 as position information and RSSI (received signal strength display signal). Position data representing the position of the microphone transmitter is calculated from the position information and RSSI.

  In the microphone transmission system K2, the input from the microphone (element) 30 is controlled by the microphone amplifier 38, the A / D converter 39, the modulator 372, and the CPU 31 by a VCO (voltage controlled oscillator) 352. In the processing by the UP (scan) converter 362 and the Rf amplifier 342, the position data is added and transmitted from the antenna 33 via the antenna duplexer 32.

  The transmission of location information such as location information transmitter → microphone transmitter, microphone transmitter → receiver is realized by any method such as FSK, MSK, PSK, QAM, and FDMA, TDMA, CDMA, etc. May be.

[2-3. (Reception system as a whole)
In this system, a plurality of receivers R1, R2,... Rn corresponding to each of a plurality of microphone transmitters M1, M2,... Mn, an antenna divider D, and a surround circuit S constitute a reception system RS. Yes. Among these, the antenna divider D is distribution means for distributing the signal for each microphone transmitter M received by each antenna AA, AB (for example, FIG. 4) to the corresponding receiver R1, R2,... Rn. 4 may be provided for the antenna AA and the antenna AB in the form illustrated in FIG. In this case, as illustrated in FIG. 1, each receiver R receives a signal sA from the antenna AA and a signal sB from the antenna AB.

  Each receiver R includes reception-side circuit means for receiving, demodulating and amplifying radio waves. The reception-side circuit means demodulates and outputs the received voice from the received voice information and transmits each transmission as described above. The position recognition means for recognizing the standing position where the transmitter M is located based on the position information transmitted from the machine M, and the audio output for each of the plurality of speakers are made different from each other, so that the standing position is obtained. And surround means for controlling the position of the sound image correspondingly. In the present system, the surround circuit S also constitutes the surround means, and each speaker of each speaker SP (SP1, SP2,... SP5) is based on the audio output and position data for each microphone transmitter M from each receiver R. This is a surround synthesizing means for generating a channel output.

[2-4. (Receiver and position calculation)
The corresponding receiver R outputs the standing position for each microphone transmitter M that is the basis of the surround effect. That is, as illustrated in FIG. 6, each receiver R is input from an antenna divider D that is a distribution means, and each DOWN (scan) that the Rf amplifier 611 and the CPU 62 control with a VCO (voltage control oscillator) 63. Among the signals for each antenna processed by the converters 621 and 622 and the decoders 631 and 632, the selection circuit 64 can select any of the predetermined criteria including at least one of a high reception level and a low data error rate. The audio signal portion included in the selected signal is output as an audio output through the D / A converter 65 and the audio amplifier 66, and the position information obtained from the signal selected by the selection circuit 64 is processed by the CPU 62. Then, it is provided to the surround circuit S as position data representing the position of the microphone transmitter M.

[2-5. Example of placement and processing)
For example, as illustrated in FIG. 7, position information transmitters P1, P2,... P7 are installed at the center and several locations near the wall in a rectangular field, and antennas AA and AB are provided at two locations near the wall. It is assumed that microphone transmitters M1 to M4 are used. Position information transmitters P1, P2,... P7 each have radio wave arrival areas indicated by circles, and are arranged so that the areas partially overlap each other.

  In this case, for example, since the transmitter M1 receives only the position information from the position information transmitter P2, the standing position is also calculated as near the position information transmitter P2. Further, since the transmitter M2 receives the position information from the position information transmitter P3 slightly stronger and receives the position information from the position information transmitter P1 slightly weaker, its standing position is slightly more than the position information transmitter P1. Calculated closer to transmitter P3.

  Further, since the transmitter M3 receives the position information from the position information transmitters P5 and P6 to the same extent, the standing position is also calculated near the middle between the position information transmitters P5 and P6. Further, since the transmitter M4 receives only the position information from the position information transmitter P7, the standing position is also calculated as near the position information transmitter P7.

[3. effect〕
As described above, in the present embodiment, the standing position of the speaker having the transmitter, that is, the sound source position is specified based on the position information from the position information transmitters installed in several places in advance, and reception and reproduction are performed accordingly. By controlling the position of the sound image on the side, it is possible to provide wireless microphone technology that is less susceptible to environmental effects such as the position of transmitters and receivers and radio wave conditions, and that can achieve a stable and highly accurate surround effect. Become.

  Further, in the present embodiment, by performing the transmitter position calculation based on the position information from the position information transmitter on the microphone transmitter side, the burden on the receiver side is reduced, and the manufacturing cost, reliability, volume In addition to being excellent in terms of weight, it becomes easy to cope with the modification of the microphone transmitter side that is easy to carry even when the system is changed.

  In the present embodiment, as shown in FIG. 2, as a position information transmitter, a position information transmitter that operates stably with high accuracy by a simple configuration using a CPU, a VCO, an UP converter, a modulator, and an Rf amplifier. This makes it possible to implement the present invention cheaply, easily and effectively.

  In the present embodiment, as shown in FIG. 3, as a microphone transmitter, the reception system for detecting position information and the transmission system for microphone share the CPU with the information and also share the antenna. It is possible to realize a compact microphone transmitter at low cost without waste.

  In the present embodiment, as shown in FIG. 1, by using dedicated receivers corresponding to each of the plurality of microphone transmitters, the standing position can be accurately recognized without mutual interference. The multi-channel speaker set can be shared so that multiple speakers and artists, each equipped with a microphone transmitter, can be placed in free standing positions with low cost and high reliability. Realistic surround effects can be demonstrated.

  Further, in the present embodiment, as shown in FIG. 6, the diversity effect using a signal having a good reception state among a plurality of antennas eliminates the influence of the radio wave condition, and provides a stable and highly accurate surround effect anytime and anywhere. Can be realized.

[4. Other embodiments]
In addition, this invention is not limited to the said embodiment, Other embodiments containing what is illustrated below and other than that are included. For example, in the above embodiment, an example is shown in which the position of the microphone transmitter itself is calculated based on the position information and reception state information received on the transmitter side, and then transferred to the receiver together with audio information. The raw position information received by the microphone transmitter and accompanied by the reception status information may be transferred to the receiver as it is together with the audio information, and the position of the transmitter may be calculated on the receiver side based on the information. .

  In this way, by performing transmitter position calculation based on position information from the position information transmitter on the receiver side, the burden on the microphone transmitter is reduced, and manufacturing costs, reliability, battery life, volume, weight are reduced. In addition to the advantages described above, even when the system is changed, it is possible to deal with it by modifying only the receiver.

  In the above embodiment, the surround circuit S can serve as a surround means. However, when there is a single microphone, the receiver R can be single and can be configured integrally with the surround circuit S.

  Moreover, in the said embodiment, as shown in FIG.1 and FIG.7, although the example which arrange | positions three or more position information transmitters P in two-dimensional space, such as a rectangular venue, was shown, as shown in FIG. An example in which only the left and right stereo positions are calculated using at least two position information transmitters PR and PL or realized by the surround effect is also an implementation mode of the present invention.

The block diagram which shows embodiment of this invention. The block diagram which shows the structure of the positional infomation transmitter in embodiment of this invention. The block diagram which shows the structure of the transmitter in embodiment of this invention. 1 is a block diagram illustrating an antenna in an embodiment of the present invention. The block diagram which illustrates the divider | distributor in embodiment of this invention. The block diagram which illustrates the receiver in the embodiment of the present invention. The layout which illustrates apparatus arrangement | positioning in rectangular space in embodiment of this invention. The layout which illustrates apparatus arrangement | positioning only of right-and-left stereo in embodiment of this invention.

Explanation of symbols

P ... Position information transmitter M (M1, M2 ... Mn) ... Microphone transmitter (microphone)
AA, AB ... antenna D ... antenna divider sA, sB ... signal R (R1, R2 ... Rn) ... receiver S ... surround circuit SP (SP1, SP2 ... SP5) ... speaker

Claims (26)

A location information transmitter that is installed at multiple locations and transmits different location information;
A wireless microphone transmitter provided with transmission side circuit means for voice input, modulation and radio wave transmission and reception;
A receiver provided with reception-side circuit means for radio wave reception, demodulation and amplification output;
In a wireless microphone system using
The microphone transmitter is
Position information receiving means for receiving position information transmitted from each position information transmitter;
Transfer means for transferring to the receiver, together with audio information, the position information accompanied by predetermined reception state information at the time of reception or position information representing the position of the microphone transmitter calculated based on the position information;
Is realized using the transmission side circuit means,
The receiver is configured to make the position recognition means for recognizing the standing position of the transmitter based on the position information transmitted from the transmitter and the audio output for each of the plurality of speakers different from each other. A wireless microphone system characterized in that surround means for controlling the position of a sound image corresponding to the standing position is realized using the receiving circuit means.   2. The wireless device according to claim 1, wherein the transfer means of the microphone transmitter calculates the position of the microphone transmitter based on the received position information and transfers the calculated position to the receiver together with audio information. Microphone system. The transfer means of the microphone transmitter transfers the received position information as it is together with audio information to the receiver,
The wireless microphone system according to claim 1, wherein the position recognition means of the receiver calculates the position of the microphone transmitter based on the received position information.   The position information transmitter transmits, via a modulator and an Rf amplifier, an output from an UP (scan) converter that is controlled by a CPU by a VCO (voltage control transmitter) according to position information stored in advance. The wireless microphone system according to any one of claims 1 to 3. The microphone transmitter includes a position information detection reception system and a microphone transmission system that share information with a CPU and share a transmission / reception antenna with an antenna duplexer,
The position information detection receiving system includes an Rf amplifier, a DOWN (scan) converter that the CPU controls with a VCO (voltage control oscillator), a position information signal received from the antenna via the antenna duplexer, Provide to the CPU as position information and RSSI (received signal strength indication signal) by processing with at least one of the decoder or demodulator,
The CPU calculates position data representing the position of the microphone transmitter from the position information and RSSI,
The microphone transmission system includes a microphone amplifier, an A / D converter, a modulator, an UP (scan) converter that the CPU controls with a VCO (voltage control oscillator), and an Rf amplifier. 5. The wireless microphone system according to claim 3, wherein the position data is added and transmitted from the antenna via the antenna duplexer when processing is performed. In addition to the plurality of receivers corresponding respectively to the plurality of microphone transmitters,
Distributing means for distributing a signal for each microphone transmitter received by each antenna to each corresponding receiver;
Surround synthesis means for generating each speaker channel output based on the audio output and position data for each microphone transmitter from each receiver;
The wireless microphone system according to any one of claims 1 to 5, further comprising: The receiver
Of the signals for each antenna that are input from the distribution means and processed by the Rf amplifier, each DOWN (scan) converter that the CPU controls by a VCO (voltage controlled oscillator), and the decoder,
A predetermined selection circuit selects any signal by a predetermined criterion including at least one of a high reception level and a low data error rate;
The audio signal part included in the selected signal is converted into an audio output through a D / A converter and an audio amplifier.
7. The wireless according to claim 6, wherein the position information obtained from the selected signal is provided to the surround means as position data representing the position of the microphone transmitter through processing by the CPU. Microphone system. A location information transmitter that is installed at multiple locations and transmits different location information;
A wireless microphone transmitter provided with transmission side circuit means for voice input, modulation and radio wave transmission and reception;
A receiver provided with reception-side circuit means for radio wave reception, demodulation and amplification output;
In an audio transmission reproduction method using a wireless microphone system equipped with
The microphone transmitter is
Position information receiving processing for receiving position information transmitted from each position information transmitter;
A transfer process for transferring to the receiver, together with audio information, the position information accompanied by predetermined reception state information at the time of reception or position information representing the position of the microphone transmitter calculated based on the position information;
Is executed using the transmission side circuit means,
The receiver makes the position recognition process for recognizing the standing position of the transmitter based on the position information transmitted from the transmitter and the audio output for each of the plurality of speakers different from each other. And a surround process for controlling the position of the sound image corresponding to the standing position, using the receiving circuit means.   9. The voice according to claim 8, wherein the transfer processing in the microphone transmitter calculates the position of the microphone transmitter based on the received position information and transfers the calculated position to the receiver together with voice information. Transmission playback method. The transfer process in the microphone transmitter transfers the received position information as it is together with audio information to the receiver,
9. The audio transmission / reproducing method according to claim 8, wherein the position recognition processing in the receiver calculates the position of the microphone transmitter based on the received position information.   The position information transmitter transmits, via a modulator and an Rf amplifier, an output from an UP (scan) converter that is controlled by a CPU by a VCO (voltage control transmitter) according to position information stored in advance. The audio transmission reproduction method according to any one of claims 8 to 10. The microphone transmitter includes a position information detection reception system and a microphone transmission system that share information with a CPU and share a transmission / reception antenna with an antenna duplexer,
The microphone transmitter uses the position information detection receiving system to receive a position information signal received from the antenna via the antenna duplexer, and an Rf amplifier, and the CPU controls the DOWN (voltage controlled oscillator). (Scan) converter and at least one of a decoder or demodulator to provide position information and RSSI (received signal strength indication signal) to the CPU,
The microphone transmitter uses the CPU to calculate position data representing the position of the microphone transmitter from the position information and RSSI.
The microphone transmitter uses the microphone transmission system, and the input from the microphone is controlled by a microphone amplifier, an A / D converter, a modulator, and the CPU controlled by a VCO (voltage controlled oscillator). The audio transmission / reproduction method according to claim 10 or 11, wherein the position data is added and transmitted from the antenna via the antenna duplexer when processing is performed by a converter and an Rf amplifier. In the audio transmission / reproduction method using the wireless microphone system including an antenna distributor and a surround synthesis circuit, in addition to the plurality of receivers corresponding to each of the plurality of microphone transmitters,
The antenna distributor performs distribution processing for distributing a signal for each microphone transmitter received by each antenna to each corresponding receiver,
The surround synthesis circuit performs surround synthesis processing for generating each speaker channel output based on audio output and position data for each microphone transmitter from each receiver. The audio transmission reproduction method according to any one of the above. The receiver
With a selection circuit,
Of the signals for each antenna that are input from the antenna distributor and processed by the Rf amplifier, each DOWN (scan) converter that the CPU controls by a VCO (voltage controlled oscillator), and a decoder,
Selecting one of the signals based on a predetermined criterion including at least one of a high reception level and a low data error rate by the selection circuit;
The audio signal part included in the selected signal is converted into an audio output through a D / A converter and an audio amplifier.
The audio transmission / reproducing method according to claim 13, wherein the position information obtained from the selected signal is provided to the surround synthesis circuit as position data representing the position of the microphone transmitter through processing by the CPU. Using transmission side circuit means for voice input, modulation and radio wave transmission / reception,
Position information receiving means for receiving different position information coming from each position information transmitter installed at a plurality of locations and obtaining reception status information of each position information;
Transfer means for transmitting the position information together with audio information to an external receiver together with the reception status information;
Wireless microphone transmitter characterized by realizing. Using reception side circuit means for radio wave reception, demodulation and amplification output,
Means for demodulating and receiving received audio from audio information received from a wireless microphone transmitter;
Receiving different location information from each location information transmitter installed at a plurality of locations, received by the transmitter and retransmitted for transfer with the reception status information, and the location information And position recognition means for calculating the standing position of the transmitter based on the reception status information,
Surround means for controlling the position of the sound image corresponding to the standing position by making the sound output for each of the plurality of sound output channels different from each other;
A receiver characterized by realizing. Using transmission side circuit means for voice input, modulation and radio wave transmission / reception,
Position information receiving means for receiving different position information coming from each position information transmitter installed at a plurality of locations and obtaining reception status information of each position information;
Transfer means for calculating the standing position of the transmitter based on the position information and the reception status information, and transferring position data representing the standing position together with audio information to an external receiver;
Wireless microphone transmitter characterized by realizing. Using reception side circuit means for radio wave reception, demodulation and amplification output,
Means for demodulating and receiving received audio from audio information received from a wireless microphone transmitter;
Position recognition means for receiving the position data transmitted from the transmitter and extracting the standing position of the transmitter from the position data;
Surround means for controlling the position of the sound image corresponding to the standing position by making the sound output for each of the plurality of sound output channels different from each other;
A receiver characterized by realizing. A wireless microphone transmitter provided with transmission side circuit means for voice input, modulation and radio wave transmission / reception, using the transmission side circuit means,
Position information reception processing for receiving different position information coming from each position information transmitter installed in a plurality of locations and obtaining reception status information of each position information;
A transfer process for transmitting the position information together with audio information to an external receiver together with the reception state information;
The voice transmission method characterized by performing. A receiver equipped with reception-side circuit means for radio wave reception, demodulation and amplification output uses the reception-side circuit means,
A process of demodulating and outputting received audio from audio information received from a wireless microphone transmitter;
Receiving different location information from each location information transmitter installed at a plurality of locations, received by the transmitter and retransmitted for transfer with the reception status information, and the location information And a position recognition process for calculating the standing position of the transmitter based on the reception status information;
Surround processing for controlling the position of the sound image corresponding to the standing position by making the sound output for each of the plurality of sound output channels different from each other;
A method for receiving and reproducing sound, comprising: A wireless microphone transmitter provided with transmission side circuit means for voice input, modulation and radio wave transmission / reception, using the transmission side circuit means,
Position information reception processing for receiving different position information coming from each position information transmitter installed in a plurality of locations and obtaining reception status information of each position information;
A transfer process for calculating the standing position of the transmitter based on the position information and the reception status information, and transferring position data representing the standing position together with audio information to an external receiver;
The voice transmission method characterized by performing. A receiver equipped with reception-side circuit means for radio wave reception, demodulation and amplification output uses the reception-side circuit means,
A process of demodulating and outputting received audio from audio information received from a wireless microphone transmitter;
A position recognition process for receiving the position data transmitted from the transmitter and extracting the standing position of the transmitter from the position data;
Surround processing for controlling the position of the sound image corresponding to the standing position by making the sound output for each of the plurality of sound output channels different from each other;
A method for receiving and reproducing sound, comprising: By controlling the CPU of the wireless microphone transmitter provided with the transmission side circuit means for voice input, modulation and radio wave transmission / reception, using the transmission side circuit means,
Position information reception processing for receiving different position information coming from each position information transmitter installed in a plurality of locations and obtaining reception status information of each position information;
A transfer process for transmitting the position information together with audio information to an external receiver together with the reception state information;
The voice transmission program characterized by performing. By controlling the CPU of the receiver equipped with the reception side circuit means for radio wave reception, demodulation and amplification output, the reception side circuit means is used.
A process of demodulating and outputting received audio from audio information received from a wireless microphone transmitter;
Receiving different location information from each location information transmitter installed at a plurality of locations, received by the transmitter and retransmitted for transfer with the reception status information, and the location information And a position recognition process for calculating the standing position of the transmitter based on the reception status information;
Surround processing for controlling the position of the sound image corresponding to the standing position by making the sound output for each of the plurality of sound output channels different from each other;
A program for receiving and reproducing sound. By controlling the CPU of the wireless microphone transmitter provided with the transmission side circuit means for voice input, modulation and radio wave transmission / reception, using the transmission side circuit means,
Position information reception processing for receiving different position information coming from each position information transmitter installed in a plurality of locations and obtaining reception status information of each position information;
A transfer process for calculating the standing position of the transmitter based on the position information and the reception status information, and transferring position data representing the standing position together with audio information to an external receiver;
The voice transmission program characterized by performing. By controlling the CPU of the receiver equipped with the reception side circuit means for radio wave reception, demodulation and amplification output, the reception side circuit means is used.
A process of demodulating and outputting received audio from audio information received from a wireless microphone transmitter;
A position recognition process for receiving the position data transmitted from the transmitter and extracting the standing position of the transmitter from the position data;
Surround processing for controlling the position of the sound image corresponding to the standing position by making the sound output for each of the plurality of sound output channels different from each other;
A program for receiving and reproducing sound.

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