TWI699122B - Multi-channel audio control system - Google Patents

Abstract

A multi-channel audio control system includes a central audio-visual processing unit, a front speaker unit, a rear audio processing unit, a rear speaker unit, and a smart wireless remote controller. The smart wireless remote controller transmits channel control commands to Control the audio content of each channel speaker, allowing users to specify the speaker switch according to actual needs and personal preferences, expanding the flexibility of use. In addition, the rear audio processing unit decodes the complete audio, transmits the rear audio playback signal according to the channel control command, and plays it by the rear speaker unit. Furthermore, the present invention can also greatly reduce the physical wiring of audio transmission and maintain the original decoration design.

Description

Multi-channel audio control system

The present invention relates to a multi-channel audio control system, in particular, it uses a smart wireless remote controller to emit sound channel control commands to control the speakers of each channel to play audio content, allowing users to specify speakers according to actual needs and personal preferences Switch, and expand the flexibility of use.

With the improvement of living standards, people are paying more and more attention to the improvement of quality in pursuit of leisure and entertainment. In the leisure application field of audio-visual audio, the industry has successively launched in order to achieve high-quality sound performance to meet the auditory and sensory needs of consumers. Digital stereo, stereo, and surround sound field multi-channel technology, such as Dolby 5.1 channel system, 7.1 channel system or other multi-channel systems, and is commonly used in movie theaters and concert venues. In addition, with the continuous advancement of electronic technology, ordinary families can also configure high-quality home theaters at a limited cost, so that they can enjoy high-end music listening or sound quality that can only be found in movie theaters at home.

In the conventional technology, the video and audio coded signals generally come from DVD discs, Blu-ray players, online video and audio sources, etc., with fixed audio tracks and storage formats, including images and multi-channel audio data, which are decoded and separated by the amplifier host. , After zooming in, the image data is played directly by the monitor, while the multi-channel audio data is played by various speakers or speakers, such as different speakers on the front, side and rear, to show the immersive auditory experience. The listener is like being in the real world.

However, the disadvantage of the above-mentioned conventional technology is that the original video and audio coded signals in different audio tracks are decoded by the amplifier host and then separated into audio data for the corresponding speakers. For the original video and audio coded signals whose audio format is two-channel stereo , Even if the speaker system is upgraded to Dolby 7.1, it cannot control the sound function of the rear speakers at will, so it is quite limited and inflexible. Moreover, it is quite difficult to pull the speaker cable wiring, and the original sound track is limited, and the speaker cannot be selected at will.

Furthermore, in terms of the actual configuration of the general speaker of Dolby 7.1, the speaker of the front speaker unit is placed in front of the user and close to the display, the center channel speaker is located under the display, the front left channel speaker and the front The right channel speakers are located on the left and right sides of the display, while the rear left channel speakers and the rear right channel speakers are located on the user's side or the rear side. The rear left channel speakers and the rear top speakers The right channel speaker is located above the user's rear left and right sides, and the subwoofer channel speaker may be closer to the user. Therefore, the conventional Dolby 7.1 implementation requires a large amount of physical wiring to connect each speaker, causing chaos in the overall environment, and may also damage the original decoration design due to the need to drill cables on the ceiling or wall .

Therefore, there is a great need for an innovative multi-channel audio control system that uses smart wireless remote controllers to transmit channel control commands to change the broadcast content of different speakers, allowing users to arbitrarily change the sound effects according to actual needs and personal preferences. Further expand the flexibility of use, especially the audio decoding processing of the audio coded signal by the rear audio processing unit according to the channel control command to generate a complete audio playback signal, which is played by the rear speaker unit, thereby solving the above-mentioned conventional technology problems .

The main purpose of the present invention is to provide a multi-channel audio control system, including a smart wireless remote controller, a central audio-visual processing unit, a front speaker unit, a rear audio processing unit, and a rear speaker unit to achieve high-quality audio and video Play effect.

Specifically, the above-mentioned smart wireless remote controller has a touch display function and a wireless remote control function, and the touch display function can be used to display a control screen for the user to generate and transmit by pressing the control screen to drive the wireless remote control function Channel control instructions to the central audio-visual processing unit.

The smart wireless remote controller can be a mobile device containing a smart wireless remote control app.

The central audio-visual processing unit receives channel control commands and audio-visual encoding signals or audio signals from the audio-visual source device, and performs audio-visual decoding processing on the audio-visual encoding signals to generate video playback signals and audio playback signals. The video playback signal is sent to the target Position, the central audio-visual processing unit copies the undecoded audio coded signal, and transmits the channel control command and the copied audio coded signal through the first wireless channel and the second wireless channel respectively, and also according to The channel control command performs pre-audio processing on the audio playback signal to generate and transmit the pre-audio playback signal to the front speaker unit.

The front speaker unit includes a center channel speaker, a front left channel speaker and a front right channel speaker, which can receive and play the front audio playback signal from the central audio-visual processing unit.

In addition, the post audio processing unit receives channel control commands and copied audio coding signals via the first wireless channel and the second wireless channel, respectively, and the post audio processing unit performs audio processing on the audio coding signals to generate and transmit the post The audio broadcasts the signal to the rear speaker unit. Furthermore, the rear speaker unit includes a subwoofer channel speaker, a left rear channel speaker, a right rear channel speaker, a rear upper left channel speaker and a rear upper right channel speaker, which can receive and play rear audio playback Signal.

In particular, the control screen of the smart wireless remote controller includes the center channel speaker icon, the front left channel speaker icon, the front right channel speaker icon, the subwoofer channel speaker icon, and the left rear channel speaker icon. The icon, the right rear channel speaker icon, the upper rear left channel speaker icon, and the rear upper right channel icon correspond to the center channel speaker, front left channel speaker, and front right channel speaker respectively. Channel speakers, subwoofer channel speakers, left-rear channel speakers, right-rear channel speakers, upper-rear left-channel speakers, and upper-rear right-channel speakers are mainly for users to choose and play, such as Select none, select some or all.

Since the smart wireless remote controller of the present invention can specify the switch of each channel speaker according to actual needs and personal preferences, the flexibility of use is further expanded. In particular, between the central and rear audio processing units, wireless or simple wires are used to transmit audio signals, which greatly reduces wiring difficulties.

The following is a more detailed description of the implementation of the present invention in conjunction with the drawings and component symbols, so that those who are familiar with the art can implement it after studying this manual.

Please refer to FIG. 1, which shows a schematic diagram of a multi-channel audio control system according to an embodiment of the present invention. As shown in FIG. 1, the multi-channel audio control system of the embodiment of the present invention includes a smart wireless remote controller RC, a central audio-visual processing unit 10, a front speaker unit 20, a rear audio processing unit 30, and a rear speaker unit 40. To achieve high-quality audio and video playback.

Specifically, the smart wireless remote controller RC has a touch display function and a wireless remote control function, and the touch display function can be used to display the control screen S for the user to press the control screen S to drive the wireless remote control function to generate and Send the channel control command CMD to the central audio-visual processing unit 10.

The central audio-visual processing unit 10 receives the channel control command CMD and the audio-visual coding signal AV (or a pure audio signal) from the audio-visual source device 12, and performs audio-visual decoding processing on the audio-visual coding signal AV to generate the video playback signal V and The decoded audio coded signal A1 is copied and the undecoded audio coded signal A1 is copied. The video playback signal V is directly transmitted to the display 14 for display, and the channel control command CMD and one of the audio coded signals A1 are respectively passed through A wireless or wired channel and a second wireless channel for transmission. At the same time, the central audio-visual processing unit 10 performs pre-audio decoding processing on another audio coded signal A1 according to the channel control command CMD to generate and transmit the pre-audio playback signal A2 to the front speaker unit 20 for playback.

The above-mentioned display 14 can also be the audio-visual source device 12 at the same time, that is, the display 14 can also be used as a source of audio-visual coding signals or audio signals. The audio-visual signal processing can include signal filtering processing, signal decoding, signal separation processing, and signal mixing processing. At least one of them.

Furthermore, the post audio processing unit 30 receives the channel control command CMD and the audio coding signal A1 from the central audio-visual processing unit 10 via the first wireless channel and the second wireless channel, respectively, and encodes the audio and video according to the channel control command CMD The signal A1 undergoes post audio processing, and then generates and transmits the post audio playback signal A3 to the rear speaker unit 40 for playback. The first wireless channel and the second wireless channel can also be wired.

It should be noted that the front speaker unit 20 and the rear speaker unit 40 of the present invention have different configuration designs. The following will refer to FIG. 2 for convenience of description, but FIG. 2 only shows an exemplary example of the present invention, not for To limit the scope of the present invention, that is, other combined sound systems should be covered within the scope of the present invention.

As shown in FIG. 2, the front speaker unit 20 may include a center channel speaker C, a front left channel speaker FL, and a front right channel speaker FR, and the rear speaker unit 40 may include a subwoofer channel speaker L, a left speaker Rear channel speaker RL, right rear channel speaker RR, rear upper left channel speaker ATL and rear upper right channel speaker ATR, and the subwoofer channel speaker L is usually called subwoofer in the general industry Horn (speaker).

For example, the display 14 is located in front of the target location USR, and the speaker of the front speaker unit 20 is placed in front of the target location USR and close to the display 14. The center channel speaker C is located below the display 14, and the front The left channel speaker FL and the front right channel speaker FR are respectively located on the left and right side of the display 14. In addition, the speakers of the rear speaker unit 40 are placed on the side and near the rear of the target position USR. The channel speaker RL and the rear right channel speaker RR are located on the two sides or the rear of the target position USR, the rear upper left channel speaker ATL and the rear upper right channel speaker ATR are located above the target position USR Or above the left and right rear side, the subwoofer speaker L can be placed arbitrarily.

It should be noted that center channel speaker C, front left channel speaker FL, front right channel speaker FR, subwoofer channel speaker L, left rear channel speaker RL, right rear channel speaker RR, rear The upper left channel speaker ATL and the rear upper right channel speaker ATR can be placed in other specific positions according to actual needs, but both should fall within the scope of the present invention.

With further reference to FIG. 3, a schematic diagram of the control screen displayed by the smart wireless remote controller in the embodiment of the present invention. As shown in Figure 3, the control screen contains multiple speaker icons, each corresponding to the center channel speaker C, the front left channel speaker FL, the front right channel speaker FR, the subwoofer channel speaker L, and the left rear speaker. Channel speaker RL, right rear channel speaker RR, rear upper left channel speaker ATL, and rear upper right channel speaker ATR, for the user to select and play. In addition, the control screen also includes a display corresponding to the display 14 The display icon marked "DISPLAY" and the sofa icon marked "SOFA" indicate the location of the target location USR.

Therefore, in the actual application operation of the present invention, the user can click the speaker icons on the control screen in FIG. 3 according to needs, so that the selected speaker can play the front audio playback signal or the rear audio playback signal. Corresponding channel audio in.

For example, if it is a two-channel audio input, the user can only select "2 CHANNELS", and the light of "2 CHANNELS" will be on. Then, the speaker icon can be selected arbitrarily, such as none, partial Select or select all, so that two-channel music can be played on the selected speakers. For example, when watching TV in the dead of night, the user can choose the left rear channel speaker RL and the right rear channel speaker RR near the sofa to sound, which will not cause any noise to the family, but if it is a banquet, you can choose The upper left channel speaker ATL and the upper right channel speaker ATR play the sky channel as background music without interfering with the banquet conversation.

In addition, if it is a multi-channel composite movie or music concert sound input, you can choose "2 CHANNELS" or "MULTI CHANNELS", because general movies usually contain two-channel and multi-channel audio tracks. At this time, if you select "2 CHANNELS", the "2 CHANNELS" light will be on. You can select none, some or all of the speaker icons on the control screen, and the two-channel music can be selected from the speakers Come play. If you select "MULTI CHANNELS", the "MULTI CHANNELS" light will be on. You can select none, some or all of the speaker icons on the control screen, and the multi-channel audio can be assigned to the corresponding Various speakers. For example, when testing sound effects or adjusting the sound field, you can specify whether to turn on or turn off a specific speaker.

Preferably, the aforementioned central audio-visual processing unit 10 and the center channel speaker C can be combined into one body, and the rear audio processing unit 30 and the subwoofer channel speaker L can also be combined into one body, which greatly simplifies the overall design.

In summary, the main feature of the present invention is to use the smart wireless remote controller to allow the user to switch the sound arbitrarily according to actual needs and personal preferences, thereby expanding the flexibility of use. In particular, the post audio processing unit can decode the audio according to the channel control command, and at the same time specify the speaker to be played according to the channel control command.

In addition, another feature of the present invention is that the rear audio processing unit receives channel control commands and audio coding signals from the central audio-visual processing unit via the first wireless channel and the second wireless channel, respectively. Therefore, it can save Remove the physical wiring between the rear audio processing unit and the central audio-visual processing unit, which greatly reduces the overall wiring and simplifies the configuration design, especially without affecting or destroying the existing decoration.

The above descriptions are only used to explain the preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Therefore, any modifications or changes related to the present invention made under the same spirit of the invention , Should still be included in the scope of the invention's intention to protect.

10 central processing unit 12 video and audio source device 14 display 20 speaker front 30 facing the audio processing unit 40 after the rear speaker unit encoding audio signals A1 A2 A3 front audio signal playback rear audio playback video signal AV input signal ATL post Top left channel speaker ATR Rear top right channel speaker C Central channel speaker CMD Channel control command FL Front left channel speaker FR Front right channel speaker L Remote channel speaker RC Super subwoofer Control screen RL Rear left channel speaker RR Rear right channel speaker USR Target position V Video playback signal

Fig. 1 shows a schematic diagram of a multi-channel audio control system according to an embodiment of the present invention; Fig. 2 shows a schematic diagram of an application example of a front speaker unit and a rear speaker unit in a multi-channel audio control system according to an embodiment of the present invention; and Fig. 3 shows According to the schematic diagram of the control screen displayed by the smart wireless remote controller in the embodiment of the present invention.

10 Central audio-visual processing unit 12 Audio-visual source device 14 Wireless audio input display 20 Front speaker unit 30 Rear audio processing unit 40 Rear speaker unit A1 Audio encoding signal A2 Front audio playback signal A3 Rear RC audio signal Remote controller S Control screen V Video playback signal

Claims (9)

A multi-channel audio control system includes: a smart wireless remote controller with a touch display function and a wireless remote control function, the touch display function is used to display a control screen and for a user to press The control screen is used to drive the wireless remote control function to generate and transmit a channel control command; a central audio-visual processing unit is used to receive the channel control command and an audio-visual coding signal from an audio-visual source device or simply a Audio signal, and perform an audio/video decoding process on the audio/video coded signal to generate an image playback signal and an audio encoding signal. The video playback signal is transmitted to a display located in front of a target location for display, and the central audio/video processing unit replicates The undecoded audio coded signal, and the channel control command and the copied audio coded signal are respectively transmitted through a first wireless channel and a second wireless channel, and the audio coded signal undergoes a pre-audio decoding process And generate and send a front audio playback signal according to the channel control command; a front speaker unit, including a center channel speaker, a front left channel speaker, and a front right channel speaker for receiving And play the front audio playback signal; a rear audio processing unit that receives the channel control command and the copied audio encoding signal through the first wireless channel and the second wireless channel, and performs the audio encoding signal Perform a post audio decoding process to generate and transmit a post audio playback signal according to the channel control command; and a rear speaker unit, including a subwoofer channel speaker, a left rear channel speaker, and a right rear sound Channel speakers, a rear upper left channel speaker, and a rear upper right channel speaker are used to receive and play the rear audio playback signal. The control screen includes a center channel speaker icon, a front Left channel speaker icon, a front right channel speaker icon, a subwoofer channel speaker icon, a left rear channel speaker icon, a right rear channel speaker icon, a rear top left The sound channel speaker icon and the rear upper right channel icon correspond to the center channel speaker, the front left channel speaker, the front right channel speaker, the subwoofer channel speaker, The left rear channel speaker, the right rear channel speaker, the rear upper left channel speaker and the rear upper right channel speaker are used for the user to select and play. According to the multi-channel audio control system described in claim 1, wherein the first wireless channel and the second wireless channel are different wireless channels and can be replaced by a wired method. According to the multi-channel audio control system described in item 1 of the scope of patent application, the front audio playback signal is transmitted to the front speaker unit via a wired method or a wireless method. According to the multi-channel audio control system described in claim 1, wherein the rear audio playback signal is transmitted to the rear speaker unit via a wired method or a wireless method. According to the multi-channel audio control system described in item 1 of the scope of patent application, the central audio-visual processing unit and the central channel speaker are combined into one body. According to the multi-channel audio control system described in item 1 of the scope of patent application, the rear audio processing unit and the subwoofer channel speaker are combined into one. According to the multi-channel audio control system described in claim 1, wherein the smart wireless remote controller is a mobile device containing a smart wireless remote control app. According to the multi-channel audio control system described in item 1 of the scope of patent application, the smart wireless remote controller further displays a target position icon and a display icon to individually mark the target position icon and the display position. According to the multi-channel audio control system described in item 1 of the patent application, the smart wireless remote controller further displays a two-channel icon and a multi-channel icon to prompt the user to press the control Picture.

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