JP6159581B2 - Online karaoke system using sound collecting microphone - Google Patents

Description

  The present invention relates to a communication karaoke system in which bases are communicably connected to each other via a transmission line, and a communication duet is performed between the bases, and more particularly to a system that shares sound around each base using a sound collecting microphone.

  A communication karaoke system is known in which bases are communicably connected via a transmission line and a communication duet is performed between the bases. For example, in the communication karaoke system described in Patent Document 1, after performing synchronization processing between the communication karaoke system at point A and the communication karaoke system at point B, the guide data is mutually transmitted and reproduced. And karaoke singing is performed according to the reproduction sound in each base.

JP 2010-112981 A

  As represented by the communication karaoke system of Patent Document 1, in the conventional karaoke system, the singer's singing sound is shared between the bases. That is, there was a problem that the hands and excitement sounds from the friends at the base were not shared, and it was difficult to convey the atmosphere of the place between the bases.

  The present invention has been made in view of such circumstances, and an object of the present invention is to communicate the atmosphere of the partner site at each site in a communication karaoke system that allows communication duets between the sites. It is in.

  In order to achieve the above object, the present invention is a communication karaoke system in which a first karaoke device at a first base and a second karaoke device at a second base are communicably connected via a transmission line. A first singing microphone that collects a first singing sound by a singer at a base, a first ambient sound microphone that collects a first ambient sound at the first base, and a second singing by a singer at the second base A second singing microphone that collects sound, a second ambient sound microphone that collects the second ambient sound of the second base, a first singing signal generated by the first singing microphone, and the second A singing signal transmitting / receiving means for transmitting and receiving the second singing signal generated by the singing microphone between the first karaoke device and the second karaoke device via the transmission path, and the first ambient sound microphone. Generated by the first ambient sound signal and the second ambient sound microphone. Ambient sound signal transmitting / receiving means for transmitting and receiving the second ambient sound signal transmitted between the first karaoke device and the second karaoke device via the transmission path, the received second singing signal, and the second First reproduction means for reproducing the second song sound and the second ambient sound based on two ambient sound signals at the first base, and the first song signal and the first ambient sound signal received based on the received first song signal and the first ambient sound signal. And a second reproduction means for reproducing the first singing sound and the first ambient sound at the second base.

  According to the present invention, the first ambient sound of the first site is emitted at the second site, and the second ambient sound of the second site is emitted at the first site. Can be communicated.

  In the above karaoke system, the first video camera that captures the first video of the first site, the second video camera that captures the second video of the second site, and the first video camera generated by the first video camera. One video signal and the second video signal generated by the second video camera are transmitted to the first karaoke apparatus and the first karaoke device via the transmission path for transmitting the first ambient sound signal and the second ambient sound signal. Video signal transmission / reception means for transmitting / receiving to / from the second karaoke apparatus, and the transmission path for transmitting each video signal and each ambient sound signal has a transmission quality higher than the transmission path for transmitting each singing signal. Preferably it is low. In this configuration, since the first video signal and the second video signal are also transmitted via the transmission path for transmitting the first ambient sound signal and the second ambient sound signal, the transmission path can be simplified. Here, since each ambient sound may be lower in quality than the singing sound, the sampling frequency can be lowered. In addition, each video during singing is less affected by transmission delay than singing voice. For this reason, even if each ambient sound signal and each video signal are transmitted through a common transmission line having a transmission quality lower than that of each singing signal transmission, the influence on the communication duet can be suppressed.

  In the above karaoke system, the performance control means for instructing the start and end of performance of the karaoke performance, and the input signal from the first ambient sound microphone and the second ambient sound microphone based on the instruction from the performance control means It is preferable to include a microphone control means for making the input signal of into a disconnected state during the performance period of karaoke, and a connected state during the non-performance period. In this configuration, since the ambient sound signal is not generated during the performance period of karaoke, it is possible to suppress a problem that the duet song is affected by the ambient sound.

  In the karaoke system described above, the second performance component emitted by the karaoke performance of the second karaoke device is extracted from the received second ambient sound signal, and is generated by the karaoke performance by the first karaoke device. The first difference detecting means for detecting the first phase difference and the first signal level difference with the first performance sound signal and the received first ambient sound signal are emitted by the karaoke performance of the first karaoke device. A second difference detecting means for extracting a first performance component and detecting a second phase difference and a second signal level difference with a second performance sound signal generated by the karaoke performance by the second karaoke device; The first performance signal is converted into an antiphase signal, delayed by the first phase difference, and the first antiphase signal having the amplitude changed in accordance with the first signal level difference is received. Mixed with ambient sound signal A first canceling means that converts the second performance sound signal into an opposite phase, delays the second performance difference by the second phase difference, and changes the amplitude according to the second signal level difference. It is preferable to comprise a second canceling means for mixing the signal with the received second ambient sound signal. In this configuration, since the karaoke performance sound included in the ambient sound in the duet singing is suppressed, it is possible to make it easier to hear the matching hand and the rising sound at the partner site.

  According to the present invention, in the communication karaoke system in which a communication duet is performed between the respective bases, the atmosphere of the partner base can be transmitted at each base.

It is a conceptual diagram explaining the schematic structure in a communication karaoke system. It is a block diagram explaining the structure of a host apparatus. It is a block diagram explaining the structure of a karaoke apparatus. It is a block diagram explaining the structure of a karaoke main body. It is a block diagram explaining the state where a pair of karaoke apparatus which performs a duet was connected via the transmission line. It is a block diagram explaining the flow of the various signals at the time of communication duet execution. It is a conceptual diagram explaining ON / OFF control of a singing microphone and a sound collection microphone. It is a conceptual diagram explaining the cancellation process of the other party performance sound by a reverse phase signal. It is a block diagram explaining the flow of various signals in other embodiments.

  Hereinafter, embodiments of the present invention will be described. The communication karaoke system shown in FIG. 1 has a host device 1 and a karaoke device 2. And these are connected via the transmission line 4 so that communication is possible. The karaoke apparatus 2 is installed in each karaoke room RM of the karaoke store KB, for example. When performing a duet singing (hereinafter referred to as a communication duet) through the transmission path 4, the pair of karaoke apparatuses 2 are connected to each other via the transmission path 4. Hereinafter, each device will be described.

  The host device 1 functions as a server and accumulates and manages various information such as customer information. As illustrated in FIG. 2, the host device 1 includes a host-side control unit 11, a host-side communication unit 12, and a host-side storage unit 13. The host-side control unit 11 is a central part of control in the host device 1 and includes a CPU 11a and a memory 11b. The CPU 11a executes various controls according to the operation program stored in the memory 11b. The memory 11b is a storage element that stores a program to be executed by the CPU 11a and temporarily stores various types of information when the program is executed. The host-side communication unit 12 provides an interface for connecting the host device 1 to the transmission path 4. The host-side storage unit 13 is a storage device that stores a large amount of information, and includes a hard disk drive or the like. A partial area of the host-side storage unit 13 is used as a customer information storage area in which personal information and history data of a user (singer) are stored. In the customer information storage area, data indicating personal information, store visit history, singing history, and the like are stored in a state associated with the user ID.

  Next, the karaoke apparatus 2 will be described. The karaoke device 2 performs a karaoke performance or the like. For example, as shown in FIG. 3, the karaoke main body 21, a speaker 22, a monitor 23, a singing microphone 24, a camera with a microphone 25, and a remote control device 26 are provided. The first communication terminal 27, the second communication terminal 28, and the power amplifier 29 are included.

  The karaoke main body 21 is a part that performs various controls related to karaoke singing, such as performance control of selected karaoke music, display control of lyrics and background video, and processing of a singing voice signal generated by the singing microphone 24. The karaoke main body 21 will be described in detail later.

  The speaker 22 is connected to the karaoke main body 21 via the first communication terminal 27 and the power amplifier 29, and emits sound based on the sound emission signal amplified by the power amplifier 29. For example, in a normal karaoke singing performed in each karaoke room RM, a singing signal generated by the singing microphone 24 and adjusted by the karaoke main body 21, and a performance sound signal generated by the karaoke main body 21 for karaoke performance Is input to the power amplifier 29 through the first communication terminal 27. For this reason, a singing sound and a karaoke performance sound are emitted from the speaker 22. In such normal karaoke singing, the singing signal and the performance sound signal may be directly input to the power amplifier 29 without passing through the first communication terminal 27.

  Moreover, in the communication duet performed by connecting two karaoke rooms RM (bases) so that they can communicate with each other through the transmission path 4, a singing signal (first singing signal) generated by the singing microphone 24 at one of the bases, as will be described later. ), A singing signal (second singing signal) generated by the singing microphone 24 of the other base, and a performance sound signal generated by the karaoke main body 21 of each base via the first communication terminal 27 29. For this reason, the singing sound and karaoke performance sound of each singer are emitted from the speaker 22.

  The monitor 23 is connected to the karaoke main body 21 and displays video on the screen based on the video signal from the karaoke main body 21. For example, lyrics and background video in a karaoke song to be sung are displayed. In the communication duet, the room side video and the partner side video are displayed together with the lyrics telop. The singing microphone 24 is also connected to the karaoke main body 21, and the singer's voice or the like is converted into a singing signal and input to the karaoke main body 21.

  The microphone-equipped camera 25 includes a camera unit 25a and a sound collecting microphone 25b. Then, the camera unit 25a shoots the inside of the karaoke room RM to generate a video signal, and the sound collection microphone 25b collects the ambient sound of the karaoke room RM to generate the ambient sound signal. The camera with microphone 25 corresponds to a video camera that captures video at each location, and also corresponds to an ambient sound microphone that collects ambient sounds at each location. The generated video signal and ambient sound signal are input to the second communication terminal 28 and output to the karaoke main body 21 or transmitted to the other party via the transmission path 4.

  The remote control device 26 includes a short-range wireless communication unit capable of bidirectional communication for transmitting and receiving information to and from the karaoke main body 21 and is operated when a karaoke song is reserved. When reserving karaoke music, the remote control device 26 transmits an operation signal including a music ID for identifying the music to be played.

  The remote control device 26 of the present embodiment also functions as a start signal transmission unit that transmits a start signal in a communication duet. Although details will be described later, in this communication karaoke system, when performing a communication duet, one base is a parent side and the other base is a child side. And the karaoke apparatus 2 installed in one base functions as a main | base station, and the karaoke apparatus 2 installed in the other base functions as a subunit | mobile_unit. Then, a start signal from the remote control device 26 of the parent-side karaoke device 2 is transmitted to each of the parent-side karaoke main body 21 and the child-side karaoke main body 21. In this case, a start signal is directly input to the karaoke main body 21 on the parent side, and the start signal is sent to the neighboring router device RT and the transmission path 4 (general-purpose transmission path 4A) to the karaoke main body 21 on the child side. Sent through.

  The first communication terminal 27 is interposed between the karaoke main body 21 and the power amplifier 29 and handles various signals related to singing sounds and performance sounds. For example, in normal karaoke singing, the first communication terminal 27 adjusts the input volume of the singing signal and the performance sound signal directly input from the karaoke main body 21 and adjusts the output volume to the power amplifier 29. Moreover, in the communication duet song, the 1st communication terminal 27 is the input balance of the other party song signal input through the transmission line 4, and the own room side song signal and performance sound signal produced | generated by the karaoke song in the own room side. The output volume for the power amplifier 29 is adjusted.

  The 2nd communication terminal 28 is interposed between the karaoke main body 21 and the camera 25 with a microphone, handles the various signals regarding an image | video and ambient sound, for example, is comprised by a set top box. For example, in communication duet singing, the second communication terminal 28 synthesizes the room-side video signal generated by the microphone-equipped camera 25 and the partner-side video signal input through the transmission path 4 and outputs them to the karaoke main body 21. . Further, the other party ambient sound signal input through the transmission path 4 is also output to the karaoke main body 21.

  The karaoke main body 21 outputs the combined video signal input from the second communication terminal 28 to the monitor 23. Thereby, the own room side video and the other party side video are displayed on the monitor 23. Further, the karaoke main body 21 outputs the other party ambient sound signal input from the second communication terminal 28 to the first communication terminal 27. The first communication terminal 27 adjusts the input volume of the other party ambient sound signal as well as the singing signal and the performance sound signal, and adjusts the output volume to the power amplifier 29.

  The first communication terminal 27 and the second communication terminal 28 are communicably connected to the counterpart first communication terminal 27 and the second communication terminal 28 via the transmission path 4 when a communication duet is performed. . The karaoke main body 21 is also communicably connected to the counterpart karaoke main body 21 via the transmission path 4. Furthermore, the karaoke main body 21 is communicably connected to the host device 1 via the transmission path 4 during a period when no communication duet is performed.

  For this reason, the karaoke main body 21, the first communication terminal 27, and the second communication terminal 28 are all connected to the router device RT. By this router device RT, the karaoke main body 21 is connected to the general-purpose transmission path 4A, the first communication terminal 27 is connected to the first dedicated transmission path 4B, and the second communication terminal 28 is connected to the second dedicated transmission path 4C. .

  Here, the general-purpose transmission line 4A is a general-purpose transmission line such as an Internet line or a wireless LAN. The first dedicated transmission path 4B and the second dedicated transmission path 4C are dedicated lines whose quality is controlled so as to obtain a prescribed communication speed. In the present embodiment, a videophone transmission path is used as the second dedicated transmission path 4C. For this reason, a telephone number is assigned to each of the plurality of second communication terminals 28, and the pair of second communication terminals 28, 28 are connected to the router device RT and the second dedicated transmission path 4 </ b> C by placing the call state. It is connected so that communication is possible. The first dedicated transmission path 4B is a dedicated transmission path capable of higher quality communication than the second dedicated transmission path 4C, such as a next-generation network. A telephone number is also assigned to each first communication terminal 27, and a pair of first communication terminals 27 and 27 are communicably connected via the router device RT and the first dedicated transmission path 4B by making a call state. Is done.

  The general-purpose transmission line 4 </ b> A is used when a communication duet start signal is transmitted to another karaoke main body 21. And the 1st exclusive transmission line 4B is used when transmitting / receiving a song signal, when performing a communication duet song. The second dedicated transmission line 4C is used when transmitting and receiving the video signal and the ambient sound signal generated by the camera with microphone 25 when performing a communication duet song.

  Next, the karaoke main body 21 will be described in detail. As shown in FIG. 4, the karaoke main body 21 includes a main body side control unit 31, a main body side communication unit 32, a main body side storage unit 33, a sound source unit 34, an acoustic processing unit 35, a display processing unit 36, A video input unit 37 and an operation unit 38 are provided. These units are connected to a communicable state via the bus BS.

  The main body side control unit 31 is a central part of control in the karaoke main body 21, and includes a CPU 31a and a memory 31b. The CPU 31a executes various controls according to the operation program stored in the memory 31b. For example, an operation input process for receiving an operation from the operation unit 38 or a sequencer process that operates as a sequencer is performed. The memory 31b is a storage element that stores a program to be executed by the CPU 31a and temporarily stores various types of information when the program is executed.

  The main body side communication unit 32 provides an interface for connecting the karaoke main body 21 to the general-purpose transmission line 4A via the router device RT. Therefore, the main body side communication unit 32 transmits and receives information to and from the router device RT. The operation of the main body side communication unit 32 is controlled by the main body side control unit 31.

  The main body side storage unit 33 is a large-capacity storage device that stores various types of data, and includes, for example, a hard disk drive. In the main body side storage unit 33, for example, a music data storage area and a background video data storage area are provided. The music data storage area stores music data for playing the karaoke music selected by the remote control device 26, and the background video data storage area stores background video data for displaying the background video on the monitor 23. Is done.

  The music data includes MIDI data and lyrics data. MIDI data is music performance information (performance data) by an electronic musical instrument, and is composed of time-series note information. The note information is composed of various commands for controlling, for example, the timing of sound generation and mute, key pressing force, volume, sound quality, pitch, and the like. The lyrics data is data for displaying the lyrics telop in the karaoke music on the monitor 23. These MIDI data and lyric data are stored in a state in which each karaoke piece that can be played by the karaoke apparatus 2 is associated with the song ID.

  The tone generator 34 is a part that generates a performance sound signal based on MIDI data, and includes a CPU 34a, a memory 34b, and a waveform memory 34c. The CPU 34a executes various controls according to the operation program stored in the memory 34b. The memory 34b is a storage element that stores a program to be executed by the CPU 34a and temporarily stores various types of information when the program is executed. The waveform memory 34c is a storage element that stores waveform data of various sounds played by the target musical instrument in a readable manner.

  When the main body side control unit 31 performs sequencer processing, the sound source unit 34 processes waveform data according to MIDI data and outputs the processed musical sound signal to the acoustic processing unit 35. Here, the sequencer processing will be briefly described. When the order of performance for a certain karaoke piece arrives, sequencer processing is started. First, the main body control unit 31 reads out the MIDI data and the lyrics data stored in the music data storage area and stores them in the memory 31b. Then, the main body side control unit 31 outputs a MIDI message to the sound source unit 34 in accordance with a time code (information indicating the progress of karaoke singing) included in the MIDI data. The sound source unit 34 performs an operation according to the input MIDI message. For example, if the MIDI message is a command to play a predetermined sound, the sound source unit 34 reads the corresponding waveform data from the waveform memory 34c, performs processing according to the MIDI message, and outputs the processed signal as a musical sound signal to the sound processing unit 35. . If the MIDI message is a command to stop sound, the sound source unit 34 stops outputting the musical sound signal to the sound processing unit 35.

  The acoustic processing unit 35 controls the performance of karaoke music, processes the singing signal generated by the singing microphone 24, processes the singing signal input through the first communication terminal 27, and the ambient sound generated by the camera 25 with microphone. This is the part that performs signal processing. For example, in the performance control of karaoke music, the sound processing unit 35 converts the musical sound signal output from the sound source unit 34 into an analog signal and outputs it to the first communication terminal 27 as a performance sound signal. When a singing signal from the singing microphone 24 is input, the singing signal is output to the first communication terminal 27 or converted into digital data and stored in the main body storage unit 33.

  The display processing unit 36 performs control such as display of a background video during karaoke performance. At the time of karaoke performance, background video data is input to the display processing unit 36, and the background video data is decoded. Then, the display processing unit 36 combines the lyrics telop with the video signal of the background video generated by the decoding, and outputs the combined video signal to the monitor 23. At that time, the display processing unit 36 synthesizes the lyrics telop based on the lyrics data output by the sequencer processing in the main body side control unit 31. Further, the display color of the lyrics telop is changed according to the color change command output by the sequencer processing. As a result, the monitor 23 displays a video in which the lyrics telop is superimposed on the background video, and the display color of the lyrics telop is changed according to the progress of the karaoke music.

  The video input unit 37 is a part that captures a video signal from the second communication terminal 28, and is configured by, for example, an interface circuit. During the communication duet, the second communication terminal 28 outputs a video signal of a composite video in which the room-side video and the partner video are combined. Then, the video input unit 37 outputs the video signal of the composite video to the display processing unit 36. Accordingly, the display processing unit 36 outputs the combined video signal to the monitor 23, and the monitor 23 displays the combined video.

  The operation unit 38 includes a panel switch, a remote control receiving circuit, and the like, and outputs an operation signal corresponding to the operation of the panel switch and the remote control device 26 by the user to the main body side control unit 31. The main body side control unit 31 detects an operation signal by performing an operation input process, and executes a corresponding process. Note that the panel switch and the remote control device 26 include various key switches (not shown) for selecting an operation. A normal karaoke song or communication duet can be selected and executed by an operation through the remote control device 26.

  Next, the operation of the communication karaoke system having the above configuration will be described. This karaoke system is characterized by communication duet processing. For this reason, the description will focus on the operation of the communication duet.

  FIG. 5 is a block diagram illustrating a state in which a pair of karaoke apparatuses 2 that perform communication duets are connected via a transmission path 4 (4A to 4C), that is, a communication karaoke system. As described above, when the communication duet is executed, one karaoke device 2 serves as a parent device, and the other karaoke device 2 serves as a child device. For convenience, in the following description, the karaoke device 2 serving as a parent device is referred to as a parent karaoke device 2A, and the karaoke device 2 serving as a child device is referred to as a child karaoke device 2B. And each part with which the parent side karaoke apparatus 2A is provided is indicated with the word “parent side”, and each part with which the child side karaoke apparatus 2B is provided is indicated with the word “child side”.

  In FIG. 5, the parent-side karaoke apparatus 2A is installed in a parent-side karaoke room RM (parent), and the child-side karaoke apparatus 2B is installed in a child-side karaoke room RM (child). In this embodiment, the parent karaoke room RM (parent) corresponds to the first base, and the child karaoke room RM (child) corresponds to the second base. Accordingly, the parent-side karaoke device 2A corresponds to the first karaoke device at the first base, and the child-side karaoke device 2B corresponds to the second karaoke device at the second base.

  The child side karaoke room RM (child) may be the first base and the parent side karaoke room RM (parent) may be the second base. In this case, the child karaoke device 2B corresponds to the first karaoke device at the first base, and the parent karaoke device 2A corresponds to the second karaoke device at the second base.

  A parent router device RTA is installed in the parent karaoke room RM (parent), and a child router device RTB is installed in the child karaoke room RM (child). The parent side karaoke main body 21A and the child side karaoke main body 21B are communicably connected via a general-purpose transmission line 4A. Similarly, the parent first communication terminal 27A and the child first communication terminal 27B are communicably connected via the first dedicated transmission line 4B, and the parent second communication terminal 28A and the child second communication terminal 28B are The second dedicated transmission line 4C is communicably connected.

  As described above, a telephone number is assigned to each of the parent first communication terminal 27A and the child first communication terminal 27B. For this reason, for example, a call is made from the first primary communication terminal 27A and off-hooked by the first slave communication terminal 27B, whereby the first dedicated transmission line 4B is connected, and conversations between users at both bases are made. It becomes possible to take communication. Similarly, telephone numbers are assigned to the parent-side second communication terminal 28A and the child-side second communication terminal 28B, respectively. For this reason, for example, when a call is made from the parent-side second communication terminal 28A and off-hooked by the child-side second communication terminal 28B, the second dedicated transmission path 4C enters a connected state, and each karaoke room RM (parent), RM (Child) video and ambient sounds are shared.

  In this way, the parent-side first communication terminal 27A and the child-side first communication terminal 27B are connected by the first dedicated transmission path 4B, and the parent-side second communication terminal 28A and the child-side second communication terminal 28B are second. When the dedicated transmission path 4C is communicably connected, various signals are transmitted and received through the path shown in FIG.

  First, the parent-side singing signal generated by the parent-side singing microphone 24A is transmitted to the first dedicated transmission line 4B via the parent-side karaoke main body 21A, the parent-side first communication terminal 27A, and the parent-side router device RTA. The The parent-side singing signal from the first dedicated transmission line 4B is received by the child-side first communication terminal 27B via the child-side router device RTB. Similarly, the child singing signal generated by the child singing microphone 24B is transmitted to the first dedicated transmission path 4B via the child karaoke main body 21B, the child first communication terminal 27B, and the child router device RTB. Is done. The child-side singing signal from the first dedicated transmission line 4B is received by the parent-side first communication terminal 27A via the parent-side router device RTA.

  Next, the parent-side ambient sound signal generated by the parent-side microphone-equipped camera 25A is transmitted to the second dedicated transmission line 4C via the parent-side second communication terminal 28A and the parent-side router device RTA. The parent side ambient sound signal from the second dedicated transmission line 4C is received by the child side karaoke main body 21B via the child side router device RTB and the child side second communication terminal 28B. Similarly, the child-side ambient sound signal generated by the child-side microphone-equipped camera 25B is transmitted to the second dedicated transmission path 4C via the child-side second communication terminal 28B and the child-side router device RTB. The child side ambient sound signal from the second dedicated transmission line 4C is received by the parent side karaoke main body 21A via the parent side router device RTA and the parent side second communication terminal 28A.

  The parent-side karaoke main body 21A outputs a parent-side singing signal, a parent-side performance sound signal, and a child-side ambient sound signal to the parent-side first communication terminal 27A. Then, the parent-side first communication terminal 27A mixes each of these signals with the child-side singing signal and outputs it to the parent-side power amplifier 29A. Thereby, from the parent speaker 22A, the parent side singing sound based on the parent side singing signal, the parent side performance sound using the parent side karaoke main body 21A as the sound source, the child side singing sound based on the child side singing signal, and the child side surroundings A child side ambient sound based on the sound signal is emitted. Similarly, the child side karaoke main body 21B outputs the child side singing signal, the child side performance sound signal, and the parent side ambient sound signal to the child side first communication terminal 27B. Then, the child-side first communication terminal 27B mixes each of these signals with the parent-side singing signal and outputs it to the child-side power amplifier 29B. Thereby, from the child side speaker 22B, the child side singing sound based on the child side singing signal, the child side performance sound using the child side karaoke main body 21B as a sound source, the parent side singing sound based on the parent side singing signal, and the parent side surroundings A parent ambient sound based on the sound signal is emitted.

  Next, the parent-side video signal generated by the parent-side microphone-equipped camera 25A is transmitted to the second dedicated transmission line 4C via the parent-side second communication terminal 28A and the parent-side router device RTA. Further, the parent-side video signal from the second dedicated transmission line 4C is received by the child-side second communication terminal 28B via the child-side router device RTB. Then, the child-side second communication terminal 28B combines the received parent-side video signal and the child-side video signal generated by the child-side microphone-equipped camera 25B, and outputs the synthesized video signal to the child-side karaoke main body 21B. To do. Similarly, the child-side video signal generated by the child-side microphone-equipped camera 25B is transmitted to the second dedicated transmission path 4C via the child-side second communication terminal 28B and the child-side router device RTB. The child-side video signal from the second dedicated transmission line 4C is received by the parent-side second communication terminal 28A via the parent-side router device RTA. Then, the parent-side second communication terminal 28A combines the received child-side video signal and the parent-side video signal generated by the parent-side microphone-equipped camera 25A, and outputs the combined video signal to the parent-side karaoke main body 21A. To do.

  The parent-side karaoke main body 21A outputs the combined video signal to the parent-side monitor 23A, and the child-side karaoke main body 21A outputs the combined video signal to the child-side monitor 23B. Thereby, the video of each karaoke room RM (parent) and RM (child) is displayed on each of the parent monitor 23A and the child monitor 23B.

  The communication duet is started when each karaoke main body 21A, 21B receives a start signal output from the parent-side remote control device 26A. The start signal from the parent-side remote control device 26A is directly input to the parent-side karaoke main body 21A. In addition, the data is transmitted to the child karaoke main body 21B via the parent router device RTA, the general-purpose transmission line 4A, and the child router device RTB.

  Thus, in the communication karaoke system of the present embodiment, in the parent side karaoke room RM (parent), the child side ambient sound is emitted in addition to the parent side singing sound, the parent side performance sound, and the child side singing sound, In the child side karaoke room RM (child), a parent side ambient sound is emitted in addition to the child side singing sound, the child side performance sound, and the parent side singing sound. Thereby, not only the voice of the singer in the other party karaoke room RM but also the hands and excitement sounds of the audience can be shared. That is, the atmosphere of the other party karaoke room RM can be transmitted to each karaoke room RM.

  Further, in the communication karaoke system of the present embodiment, each ambient sound signal generated by each of the cameras with microphones 25A and 25B is also a second dedicated transmission that is common to each video signal generated by each of the cameras with microphones 25A and 25B. Transmission / reception is performed via the path 4C. As described above, since the ambient sound signal and the video signal are transmitted and received through the second dedicated transmission path 4C, the necessary number of transmission paths 4 can be reduced. Since each ambient sound may be lower in quality than the singing sound, the sampling frequency of each ambient sound signal can be lowered than that of each singing signal. Also, each video during singing is less noticeable in transmission delay than singing voice. For this reason, even if each ambient sound signal and each video signal are transmitted through the second dedicated transmission path 4C, the influence on the communication duet can be suppressed.

  As is clear from the above description, in this embodiment, each karaoke main body 21A, 21B, each first communication terminal 27A, 27B, and each router device RTA, RTB sends each song signal to the transmission line 4 (first dedicated This corresponds to a singing signal transmitting / receiving means for transmitting / receiving between the karaoke apparatuses 2A, 2B via the transmission path 4B). Also, each karaoke main body 21A, 21B, each second communication terminal 28A, 28B, and each router device RTA, RTB sends each ambient sound signal to each karaoke device 2A via the transmission path 4 (second dedicated transmission path 4C). , 2B correspond to ambient sound signal transmission / reception means.

  Moreover, in this embodiment, since the parent side karaoke room RM (parent) corresponds to the first base and the child side karaoke room RM (child) corresponds to the second base, the parent side karaoke main body 21A, the parent side second communication terminal 28A, the parent-side power amplifier 29A, and the parent-side speaker 22A correspond to the first reproducing means. The child side karaoke main body 21B, the child side second communication terminal 28B, the child side power amplifier 29B, and the child side speaker 22B correspond to the second reproducing means. Further, the second communication terminals 28A and 28B and the router devices RTA and RTB correspond to video signal transmitting / receiving means.

  By the way, regarding the singing microphones 24A and 24B and the sound collecting microphones 25b of the cameras 25A and 25B with microphones, if these are always turned on, the surrounding sound of the other party is heard in the own room during the communication duet, and the karaoke May interfere with singing. Therefore, with respect to the sound collecting microphones 25b (ambient sound microphones) of the cameras with microphones 25A and 25B, the input signal is cut off during the karaoke performance period, and the input signal is connected during the non-performance period. It is preferable to do.

  For example, as shown in FIG. 7 (a), the input signal of the sound collecting microphone 25b of each of the cameras with microphones 25A and 25B is set in the connection state in the period until the start of the performance of the karaoke music and the period after the end of the performance. At the same time, the input signals of the singing microphones 24A and 24B are cut off, and the input signal of the sound collecting microphone 25b is cut off and the input signals of the singing microphones 24A and 24B are connected during the karaoke music performance period. To do. Further, as shown in FIG. 7B, in the period until the start of the performance of the karaoke music and the period after the end of the performance, the sound collection microphone 25b of each camera with microphone 25A, 25B and each singing microphone 24A, 24B. The input signals of the singing microphones 24A and 24B are set to the connected state while the input signal of the sound collecting microphone 25b is cut off during the karaoke music performance period.

  By performing these controls, the ambient sound of each karaoke room RM (parent) and RM (child) is not shared at least during the performance period of karaoke music, so the ambient sound of the other party interferes with karaoke singing Can be prevented. The control of the input signal of the parent singing microphone 24A in the sound processing unit 35 and the control of the input signal of the camera 25A with the parent microphone in the video / audio input unit 37 are the start and end of karaoke performance in the parent karaoke main body 21A. It is controlled by the main body control unit 31 that controls the performance period and the non-performance period. The control of the input signal of the child-side singing microphone 24B in the acoustic processing unit 35 and the control of the input signal of the child-side microphone-equipped camera 25B in the video / audio input unit 37 are the start and end of karaoke performance in the child-side karaoke main body 21B. It is controlled by the main body control unit 31 that controls the performance period and the non-performance period. For this reason, the main body side control part 31 of each karaoke main body 21A, 21B corresponds to a performance control means, and the main body side control part 31, the sound processing part 35, and the video / audio input part 37 correspond to a microphone control means.

  On the other hand, even during the performance period of karaoke music, there is also a desire to release the hand and excitement sound from the other party's karaoke room RM on the own room side. In this case, since the sound collecting microphone 25b is always turned on, the other party's ambient sound includes the karaoke performance sound emitted in the partner's karaoke room RM. Since the other party's ambient sound signal is transmitted with a delay, in the karaoke room RM on the own room side, the karaoke performance sound included in the other party's ambient sound is emitted behind the karaoke performance sound on the own room side. End up.

  In this way, during the performance period, if the other party's karaoke room RM tries to emit a hand from the other party's karaoke room RM, the other party's karaoke performance sound is also emitted, making it difficult to hear. Therefore, it is preferable to process the karaoke performance sound generated on the own room side to generate an antiphase signal and mix the antiphase signal with the ambient sound signal transmitted from the partner side. For example, as shown in FIG. 8A, it is preferable to mix the opposite phase signal with the other party ambient sound signal over the performance period of the karaoke music piece.

  Here, the antiphase signal will be described. This reverse phase signal is generated using the other party ambient sound signal and the performance sound signal generated on the own room side. The generation of the antiphase signal is performed in each of the parent side karaoke room RM (parent) and the child side karaoke room RM (child).

  For example, a performance sound component SG1 corresponding to a karaoke performance on the partner side as shown in the upper part of FIG. 8B is extracted from the partner side ambient sound signal received through the first dedicated transmission path 4B. Since this performance sound component SG1 is similar to the performance sound signal SG2 generated on the own room side, the performance sound component SG1 is extracted from the other party ambient sound signal by using the own performance sound signal SG2 as a reference. be able to.

  Next, the extracted performance sound component SG1 and the room-side performance sound signal SG2 are compared, and the phase difference and signal level difference between the performance sound component SG1 and the room-side performance sound signal SG2 are detected. In the example of FIG. 8B, the phase difference indicated by the symbol x and the signal level difference indicated by the symbols y1 and y2 are detected. Then, by converting the room-side performance sound signal SG2 into an opposite phase and delaying it by the phase difference x, and multiplying the signal level by y2 / y1 to match the amplitude with the performance sound component SG1, an opposite phase signal SG3 is generated. Is done.

  As described above, when the sampling frequency of each ambient sound signal is set lower than the sampling frequency of each singing signal, the frequency characteristics of the performance sound component SG1 and the room-side performance sound signal SG2 are different. Therefore, in order to make the frequency characteristics uniform, it is desirable to filter the high frequency component of the room-side performance sound signal SG2.

  And in each karaoke apparatus 2A, 2B, the produced | generated reverse phase signal SG3 is mixed with the other party ambient sound signal. As a result, as shown in the lower part of FIG. 8B, the reverse phase signal SG3 is in reverse phase with the performance sound component and has the same amplitude, and therefore acts to cancel the performance sound component SG1. Thereby, since the karaoke performance sound contained in the other party's ambient sound is suppressed, it is possible to make it easier to hear the hand and the rising sound from the other party's karaoke room RM.

  Similarly, as a result of being sung on the own room side, transmitted to the other party side, and emitted by the other party karaoke device, the singing signal on the own room side included in the other party ambient sound signal is also canceled using the same method. be able to. In this case, the phase difference is a delay corresponding to the round trip of the transmission path. Furthermore, the other party's song signal sung by the other party, emitted by the other party's karaoke apparatus, and included in the other party's ambient sound signal can be canceled using the same method. In this case, transmission and reception are performed under the same conditions, so there is almost no phase difference.

  In the present embodiment, the room-side performance sound signal SG2 is used to cancel the performance sound component SG1 included in the opponent-side ambient sound signal, but the opponent-side performance sound signal is transmitted before being transmitted by the opponent. It may be configured to transmit after canceling using. Similarly, the singing signal on the room side and the singing signal on the other side included in the other party ambient sound signal may be canceled before being transmitted on the other side.

  In the present embodiment, this control is performed by the main body side control unit 31, the sound source unit 34, and the sound processing unit 35 of each karaoke main body 21. When the parent side karaoke room RM (parent) is the first base and the child side karaoke room RM (child) is the second base, the main body side control unit 31, the sound source unit 34 of the parent side karaoke main body 21A, and The acoustic processing unit 35 corresponds to a first difference detection unit and a first cancellation unit. Similarly, the main body side control unit 31, the sound source unit 34, and the sound processing unit 35 of the child side karaoke main body 21B correspond to a second difference detection unit and a second cancellation unit. On the contrary, when the parent side karaoke room RM is the second base and the child side karaoke room RM is the first base, each part of the parent side karaoke main body 21A corresponds to the second difference detecting means and the second canceling means. Each part of the child side karaoke main body 21B corresponds to first difference detecting means and first canceling means.

  By the way, in the above-described embodiment, the second dedicated transmission path 4C is shared for transmission of each video signal and each ambient sound signal, but is not limited to this configuration. Each video signal and each ambient sound signal may be transmitted and received through separate transmission paths. For example, in the embodiment shown in FIG. 9, the ambient sound signals generated by the cameras with microphones 25A and 25B are input to the karaoke main bodies 21A and 21B and transmitted through the general-purpose transmission line 4A via the router devices RTA and RTB. doing.

  That is, the parent-side ambient sound signal generated by the parent-side microphone-equipped camera 25A is input to the parent-side karaoke main body 21A and then transmitted through the general-purpose transmission line 4A via the parent-side router device RTA. The parent-side ambient sound signal is received by the child-side router device RTB and then input to the child-side karaoke main body 21B. Similarly, a child-side ambient sound signal generated by the child-side microphone-equipped camera 25B is input to the child-side karaoke main body 21B and then transmitted through the general-purpose transmission line 4A via the child-side router device RTB. The child-side ambient sound signal is received by the parent-side router device RTA and then input to the parent-side karaoke main body 21A.

  In this embodiment, the general-purpose transmission path 4A corresponds to an ambient sound signal transmission path, the first dedicated transmission path 4B corresponds to a singing signal transmission path, and the second dedicated transmission path 4C corresponds to a singing signal transmission path. To do. And since each song signal, each ambient sound signal, and each video signal are transmitted by another transmission path 4A-4C, individual control of a song sound, ambient sound, and a video can be performed easily. For example, it is possible to easily transmit and receive only the singing sound and the ambient sound so as not to transmit and receive the image, or to transmit and receive only the singing sound and the image and not transmit and receive the ambient sound.

  The above description of the embodiment is for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

  For example, the communication karaoke system of each embodiment described above includes the sound source unit 34 in each of the karaoke apparatuses 2A and 2B, and the sound source unit 34 is used to emit a karaoke performance sound. A karaoke performance sound or the like may be streamed from the host device 1).

DESCRIPTION OF SYMBOLS 1 ... Host apparatus, 2 ... Karaoke apparatus, 2A ... Parent side karaoke apparatus, 2B ... Child side karaoke apparatus, 4 ... Transmission path, 4A ... General-purpose transmission path, 4B ... First exclusive transmission path, 4C ... Second exclusive transmission path , 11 ... Host side control unit, 12 ... Host side communication unit, 13 ... Host side storage unit, 21 ... Karaoke main body, 21A ... Parent side karaoke main body, 21B ... Child side karaoke main body, 22 ... Speaker, 22A ... Parent side speaker , 22B ... child side speaker, 23 ... monitor, 23A ... parent side monitor, 23B ... child side monitor, 24 ... singing microphone, 24A ... parent side singing microphone, 24B ... child side singing microphone, 25 ... camera with microphone, 25A ... Camera with parent side microphone, 25B ... Camera with child side microphone, 25a ... Camera unit, 25b ... Sound collecting microphone, 26 ... Remote control device, 26A ... Parent side remote control device, 27 ... First communication terminal, 27 ... parent side first communication terminal, 27B ... child side first communication terminal, 28 ... second communication terminal, 28A ... parent side second communication terminal, 28B ... child side second communication terminal, 29 ... power amplifier, 29A ... parent Side power amplifier, 29B... Child side power amplifier, 31... Main body side control section, 32... Main body side communication section, 33... Main body side storage section, 34 ... sound source section, 35. ... Video input part, 38 ... Operation part, KB ... Karaoke store, RM ... Karaoke room, RM (parent) ... Parent side karaoke room, RM (child) ... Child side karaoke room, RT ... Router device, RTA ... Parent side router Device, RTB ... child router device, BS ... bus, SG1 ... performance sound component, SG2 ... own room side performance sound signal, SG3 ... reverse phase signal

Claims (2)

A communication karaoke system in which a first karaoke device at a first base and a second karaoke device at a second base are connected via a transmission line so that they can communicate with each other
A first singing microphone for collecting a first singing sound by a singer at the first base;
A first ambient sound microphone for collecting the first ambient sound of the first base;
A second singing microphone for collecting the second singing sound by the singer at the second base;
A second ambient sound microphone for collecting the second ambient sound of the second site;
The first singing signal generated by the first singing microphone and the second singing signal generated by the second singing microphone are connected to the first karaoke device and the second karaoke device via the transmission path. Singing signal transmitting and receiving means for transmitting and receiving between,
The first ambient sound signal generated by the first ambient sound microphone and the second ambient sound signal generated by the second ambient sound microphone are transmitted to the first karaoke apparatus and the second via the transmission path. Ambient sound signal transmitting / receiving means for transmitting / receiving to / from the karaoke device;
First reproduction means for reproducing the second singing sound and the second ambient sound based on the received second singing signal and the second ambient sound signal at the first location;
Second reproduction means for reproducing the first song sound and the first ambient sound based on the received first song signal and the first ambient sound signal at the second site;
Performance control means for instructing the performance start and performance end of karaoke performance;
Based on an instruction from the performance control means, the input signal from the first ambient sound microphone and the input signal from the second ambient sound microphone are cut off during the karaoke performance period, and connected during the non-performance period. A communication karaoke system comprising: a microphone control means . A first video camera that captures a first video of the first location;
A second video camera for taking a second video of the second site;
A transmission path for transmitting the first video signal generated by the first video camera and the second video signal generated by the second video camera to the first ambient sound signal and the second ambient sound signal; And a video signal transmitting / receiving means for transmitting and receiving between the first karaoke device and the second karaoke device,
The communication karaoke system according to claim 1, wherein a transmission path for transmitting each video signal and each ambient sound signal has lower transmission quality than a transmission path for transmitting each singing signal.

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