CN212211372U - Audio processing circuit and audio playing device - Google Patents
Audio processing circuit and audio playing device Download PDFInfo
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- CN212211372U CN212211372U CN202020317377.0U CN202020317377U CN212211372U CN 212211372 U CN212211372 U CN 212211372U CN 202020317377 U CN202020317377 U CN 202020317377U CN 212211372 U CN212211372 U CN 212211372U
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Abstract
The utility model discloses an audio processing circuit and audio playing equipment, which comprises a music signal processing module, a microphone signal processing module, a mute switch and a change-over switch; the microphone signal processing module is used for respectively carrying out digital processing on signals of all channels input by the microphone; the music signal processing module is used for respectively decoding the signals input into all the channels and mixing all the decoded signals into stereo signals; the mute switch switches on the left and right side sound channels, the middle side sound channel and the bass sound channel of the microphone signal processing module and the music signal processing module in a sound box mode, and switches off the microphone signal processing module and the music signal processing module in an earphone mode; and the switch selects the music signal processing module to surround the left and right sound channels as output sound channels in the loudspeaker box mode, and selects the left and right sound channels in the earphone mode. This technical scheme has realized the nimble switching of two kinds of modes of audio amplifier and earphone, but the suitable passageway of automatic selection is broadcast, and the earphone mode can not influence other people.
Description
Technical Field
The utility model relates to an audio processing technology field, in particular to audio processing circuit and audio playback equipment.
Background
With the progress of science and technology and the improvement of living standard of people, the sound system is more and more widely applied to various scenes such as family entertainment, evening performance and the like. The sound system is a sound system which is formed by converting sound wave signals of original sound production field sounds into electric signals by a microphone, processing the electric signals by some electronic equipment according to certain requirements, and finally converting the electric signals into the sound wave signals by a loudspeaker for reproduction.
Power amplifiers in sound systems are tasked with amplifying weak electrical signals from a signal source (in professional sound systems from a sound mixing console) to drive a loudspeaker to produce sound. The output signal of the existing power amplifier is only output to the sound box for external amplification, the switching to the earphone mode or the switching process is complex, the external amplification of the sound box easily affects people around, and unnecessary troubles are caused to users and people around. Therefore, how to realize convenient switching of the output mode of the power amplifier is an urgent problem to be solved by current equipment manufacturers.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an audio processing circuit aims at solving the problem that power amplifier can't switch output mode in a flexible way.
In order to achieve the above object, the present invention provides an audio processing circuit, which includes a music signal processing module, a microphone signal processing module, a mute switch and a switch; the left and right sound channels, the middle sound channel and the bass sound channel of the microphone signal processing module and the music signal processing module are all connected with the input end of the mute switch; the surround left and right sound channels and the surround left and right sound channels of the microphone signal processing module are connected with the input end of the change-over switch;
the microphone signal processing module is used for respectively carrying out digital processing on the input signals of all channels;
the music signal processing module is used for respectively decoding the signals input into all the channels and mixing all the decoded signals into stereo signals;
the mute switch switches on or off the left and right sound channels, the middle sound channel and the bass sound channel of the microphone signal processing module and the music signal processing module;
and the change-over switch selects the left and right sound channels or the surrounding left and right sound channels of the music signal processing module as output sound channels.
Preferably, the left and right sound channels of the music signal processing module and the microphone signal processing module both include a left sound channel and a right sound channel; the surround left and right side sound channels of the music signal processing module and the microphone signal processing module comprise surround left sound channels and surround right sound channels; the center side channel comprises a center channel.
Preferably, the audio processing circuit further comprises a wireless module, an output end of the switch is connected with an input end of the wireless module, surround left and right side sound channels of the music signal processing module are also connected with an input end of the wireless module, and the wireless module is wirelessly connected with a surround sound box or an earphone.
Preferably, the mute switch and the switch are implemented by a system including a programmable DSP chip.
Preferably, the music signal processing module comprises a decoding module, a multi-channel mixing module and a routing module; the output end of the decoding module is connected with the input end of the routing module, the output end of the decoding module is also connected with the input end of the multi-channel mixing module, and the output end of the multi-channel mixing module is connected with the other input end of the routing module;
the decoding module is used for respectively decoding the music signals of all the channels;
the multi-channel mixing module is used for mixing the input signals of all channels into signals surrounding left and right channels in a three-dimensional manner;
the routing module selects the output signal of the decoding module as the output signal of the music signal processing module, or selects the signal output by the multi-channel mixing module as the output of the music signal processing module.
Preferably, the music signal processing module comprises a DSP audio decoding chip.
Preferably, the microphone signal processing module comprises a first input interface for connecting with a microphone and a second input interface for connecting with a musical instrument.
Preferably, the microphone signal processing module comprises a multi-channel DA conversion module and a mixing module for mixing a signal input by the first input interface and a signal input by the second input interface; and the output end of the mixing module is connected with the input end of the multi-channel DA conversion module.
Preferably, the mixing module comprises a programmable DSP chip, and the DA conversion module comprises a DA conversion chip.
On the other hand, the utility model also provides an audio playing device, which comprises a multi-channel sound box, a power amplifier module and the audio processing circuit; the input end of the power amplifier module is connected with the output end of the mute switch, and the output end of the power amplifier module is connected with the input end of the multi-channel sound box.
The utility model discloses technical scheme has solved the inconvenient problem of power amplifier mode switch through adopting microphone signal processing module, music signal processing module, silence switch and change over switch.
When the loudspeaker box is in a loudspeaker box external playing mode, the mute switch is switched on, the switch selects the surround left and right side sound channels of the microphone signal processing module as output, the sound channels of the microphone signal processing module and the music signal processing module are respectively mixed, the mixed left and right side sound channels, the mixed middle side sound channel and the mixed bass sound channel are amplified and output to the multichannel loudspeaker box for playing, and the mixed surround left and right side sound channels are output to the surround loudspeaker box for playing.
When the earphone mode is used, the mute switch is switched off, the switch selects the left and right channels of the microphone signal processing module as output, the music signal processing module takes the mixed stereo signal as output, and the left and right channels of the microphone signal processing module and the surrounding left and right channels of the music signal processing module are mixed and then output through the earphone.
When the earphone is used for access, the mute switch cuts off the signal input of the multi-channel sound box, at the moment, the multi-channel sound box and the surrounding sound box do not produce sound, and a user can not influence other people no matter singing through the microphone or only playing music; when the loudspeaker box mode is used, the mute switch is switched on, the multi-channel loudspeaker box receives a plurality of channel signals of the two signal sources, the surrounding loudspeaker box also receives surrounding channel signals of the two signal sources, and at the moment, the two loudspeaker boxes simultaneously play outwards. The technical scheme realizes the automatic matching selection of the signal channels, so that the audio system has better playing effect and flexible mode switching.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of an embodiment of an audio processing circuit according to the present invention;
fig. 2 is a schematic diagram of an embodiment of the audio playing device of the present invention;
fig. 3 is a circuit diagram of a part of a mute switch, a switch and a mixing module according to an embodiment of the present invention;
fig. 4 is another circuit diagram of the mute switch, the switch and the mixing module according to an embodiment of the present invention;
fig. 5 is a circuit diagram of a DA conversion module according to an embodiment of the present invention;
fig. 6 is a circuit diagram of a music signal processing module according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Music |
800 | Earphone set |
| 200 | Microphone |
900 | |
| 300 | |
110 | |
| 400 | Change-over |
120 | |
| 500 | |
130 | |
| 600 | |
210 | |
| 700 | |
220 | DA conversion module |
The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an audio processing circuit, which comprises a music signal processing module 100, a microphone signal processing module 200, a wireless module 900, a mute switch 300 and a change-over switch 400; the left sound channel, the right sound channel, the center sound channel and the bass sound channel of the microphone signal processing module 200 are connected with the input end of the mute switch 300; the surround left channel and the surround right channel of the microphone signal processing module 200 and the surround left channel and the surround right channel are respectively connected with the input end of the switch 400; the left channel, the right channel, the center channel and the bass channel of the music signal processing module 100 are connected with a mute switch 300; the output end of the switch 400 is connected to the input end of the wireless module 900, the surround left and right sound channels of the music signal processing module 100 are also connected to the input end of the wireless module 900, and the wireless module 900 is wirelessly connected to a surround sound box 700 or an earphone 800.
The music signal processing module 100 includes a decoding module 110, a multi-channel mixing module 120 and a routing module 130; the output end of the decoding module 110 is connected with the input end of the routing module 130, the output end of the decoding module 110 is further connected with the input end of the multi-channel mixing module 120, and the output end of the multi-channel mixing module 120 is connected with the other input end of the routing module 130; the decoding module 110 decodes the music signals of the plurality of channels respectively; the multi-channel mixing module 120 mixes the input signals of the multiple channels into signals of a stereo surround left channel and a stereo surround right channel; the routing block 130 selects an output signal of the decoding block 110 as an output signal of the music signal processing block 100 or a signal output from the multi-channel mixing block 120 as an output of the music signal processing block 100.
The microphone signal processing module 200, the microphone signal processing module 200 includes a first input interface for connecting with a microphone and a second input interface for connecting with a musical instrument. The microphone signal processing module 200 includes a mixing module 210 for mixing the signal input by the first input interface and the signal input by the second input interface, and a multi-channel DA conversion module 220; the output of the mixing module 210 is connected to the input of the multi-channel DA conversion module 220.
When the microphone and the musical instrument are simultaneously input, signals of 6 channels of two input sources are respectively mixed by the mixing module 210, and then analog-to-digital conversion is performed by the DA conversion module 220.
When the speaker playback mode is used, the mute switch 300 is switched on, the switch 400 selects the surround left and right channels of the microphone signal processing module 200 as output, the channels of the microphone signal processing module 200 and the music signal processing module 100 are respectively mixed, the mixed left and right channels, the mixed middle channel and the mixed bass channel are amplified and output to the multi-channel speaker 600 for playing, and the mixed surround left and right channels are output to the surround speaker 700 for playing; when the earphone 800 mode is used, the mute switch 300 is turned off, the switch 400 selects the left and right channels of the microphone signal processing block 200 as an output, the music signal processing block 100 passes a stereo signal as an output, and the left and right channels of the microphone signal processing block 200 and the surround left and right channels of the music signal processing block 100 are mixed and output through the earphone 800.
In the embodiment of the present invention, referring to fig. 3 and 4, the mute switch 300, the switch 400 and the mixing module 210 are all implemented by a DSP chip with model AP3800 and its peripheral circuit of the cyanine sound electronic technology; referring to fig. 6, the music signal processing module 100 uses a DSP audio decoding chip of Cirrus Logic corporation model CS498x4 and its peripheral circuits; referring to fig. 5, the DA conversion module 220 uses a DA conversion chip of model CS42528 and its peripheral circuits. It should be noted that the mute switch 300, the switch 400, the mixing module 210, the music signal processing module 100, and the DA conversion module 220 in the present invention are not limited to use only the above types of DSP chips, but may use other chips with standard performance.
It should be noted that the embodiment of the utility model provides a can also include a bluetooth module, this audio frequency processing circuit leads to bluetooth module and cell-phone or dull and stereotyped etc. and remove end wireless connection, receives control command, realizes the earphone mode of audio amplifier and the remote movement end control of audio amplifier mode, convenient and intelligence.
The embodiment of the utility model provides an in, the signal of the processing of microphone signal processing module 200 and music signal processing module 100 all is six sound channel signals, included left channel, right channel, put sound channel, bass sound channel, surround left sound channel, surround right sound channel, the DSP chip that its used is also corresponding to be six sound channel signal processing chips.
On the other hand, the utility model also provides an audio playing device, which comprises a multi-channel sound box 600, a wireless module 900, a power amplifier module 500 and an audio processing circuit; the input end of the power amplifier module 500 is connected with the output end of the mute switch 300, and the output end of the power amplifier module 500 is connected with the input end of the multi-channel sound box 600; the output end of the switch 400 is connected with the input end of the wireless module 900; the surround left channel and the surround right channel of the music signal processing module 100 are also connected to the input end of the wireless module 900, and the wireless module 900 is wirelessly connected to the surround sound box 700 or the earphone 800.
The audio processing circuit comprises a music signal processing module 100, a microphone signal processing module 200, a mute switch 300 and a change-over switch 400; the left sound channel, the right sound channel, the center sound channel and the bass sound channel of the microphone signal processing module 200 are connected with the input end of the mute switch 300; the surround left channel and the surround right channel of the microphone signal processing module 200 and the surround left channel and the surround right channel are respectively connected with the input end of the switch 400; the left channel, the right channel, the center channel and the bass channel of the music signal processing module 100 are connected with a mute switch 300;
the music signal processing module 100 includes a decoding module 110, a multi-channel mixing module 120 and a routing module 130; the output end of the decoding module 110 is connected with the input end of the routing module 130, the output end of the decoding module 110 is further connected with the input end of the multi-channel mixing module 120, and the output end of the multi-channel mixing module 120 is connected with the other input end of the routing module 130; the decoding module 110 decodes the music signals of the plurality of channels respectively; the multi-channel mixing module 120 mixes the input signals of the multiple channels into signals of a stereo surround left channel and a stereo surround right channel; the routing block 130 selects an output signal of the decoding block 110 as an output signal of the music signal processing block 100 or a signal output from the multi-channel mixing block 120 as an output of the music signal processing block 100.
The microphone signal processing module 200, the microphone signal processing module 200 includes a first input interface for connecting with a microphone and a second input interface for connecting with a musical instrument. The microphone signal processing module 200 includes a mixing module 210 for mixing the signal input by the first input interface and the signal input by the second input interface, and a multi-channel DA conversion module 220; the output of the mixing module 210 is connected to the input of the multi-channel DA conversion module 220.
When the speaker playback mode is used, the mute switch 300 is switched on, the switch 400 selects the surround left and right channels of the microphone signal processing module 200 as output, the channels of the microphone signal processing module 200 and the music signal processing module 100 are respectively mixed, the mixed left and right channels, the mixed middle channel and the mixed bass channel are amplified and output to the multi-channel speaker 600 for playing, and the mixed surround left and right channels are output to the surround speaker 700 for playing; when the earphone 800 mode is used, the mute switch 300 is turned off, the switch 400 selects the left and right channels of the microphone signal processing block 200 as an output, the music signal processing block 100 passes a stereo signal as an output, and the left and right channels of the microphone signal processing block 200 and the surround left and right channels of the music signal processing block 100 are mixed and output through the earphone 800.
The embodiment of the utility model provides an in the microphone that uses be six passageway microphones, and musical instrument and music signal's input all is six sound track signals, the audio amplifier is 3.1 audio amplifier.
It should be noted that, the utility model provides a multichannel audio amplifier 600 still can be for the audio amplifier of other sound channels quantity such as 5.1 audio amplifier, 6.1 audio amplifier, and corresponding when using the audio amplifier of other sound channels quantity, the sound channel of audio frequency processing circuit, microphone, music signal source etc. also corresponding change thereupon, and this application file does not detail one by one.
When the earphone 800 is used for access, the mute switch 300 cuts off the signal input of the multi-channel sound box 600, at this time, the 3.1 sound box and the surrounding sound box 700 do not produce sound, and a user can not influence other people no matter singing through a microphone or only playing music; when the speaker mode is used, the mute switch 300 is switched on, the 3.1 speaker receives a plurality of channel signals of the two signal sources, the surround speaker 700 also receives surround channel signals of the two signal sources at the same time, and at this time, the two speakers simultaneously play. The technical scheme realizes the automatic matching selection of the signal channels, so that the playing effect of the audio system is better, and the mode switching is flexible.
The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. An audio processing circuit is characterized by comprising a music signal processing module, a microphone signal processing module, a mute switch and a change-over switch; the left and right sound channels, the middle sound channel and the bass sound channel of the microphone signal processing module and the music signal processing module are all connected with the input end of the mute switch; the surround left and right sound channels and the surround left and right sound channels of the microphone signal processing module are connected with the input end of the change-over switch;
the microphone signal processing module is used for respectively carrying out digital processing on the input signals of all channels;
the music signal processing module is used for respectively decoding the signals input into all the channels and mixing all the decoded signals into stereo signals;
the mute switch switches on or off the left and right sound channels, the middle sound channel and the bass sound channel of the microphone signal processing module and the music signal processing module;
and the change-over switch selects the left and right sound channels or the surrounding left and right sound channels of the music signal processing module as output sound channels.
2. The audio processing circuit of claim 1, wherein the left and right channels of the music signal processing module and the microphone signal processing module each comprise a left channel, a right channel; the surround left and right side sound channels of the music signal processing module and the microphone signal processing module comprise surround left sound channels and surround right sound channels; the center side channel comprises a center channel.
3. The audio processing circuit as claimed in claim 1, further comprising a wireless module, wherein an output terminal of the switch is connected to an input terminal of the wireless module, surround left and right channels of the music signal processing module are also connected to the input terminal of the wireless module, and the wireless module is wirelessly connected to a surround speaker or an earphone.
4. The audio processing circuit of claim 1, wherein the mute switch and the toggle switch are implemented by a system comprising a programmable DSP chip.
5. The audio processing circuit of any of claims 1 to 4, wherein the music signal processing module comprises a decoding module, a multi-channel mixing module, and a routing module; the output end of the decoding module is connected with the input end of the routing module, the output end of the decoding module is also connected with the input end of the multi-channel mixing module, and the output end of the multi-channel mixing module is connected with the other input end of the routing module;
the decoding module is used for respectively decoding the music signals of all the channels;
the multi-channel mixing module is used for mixing the input signals of all channels into signals surrounding left and right channels in a three-dimensional manner;
the routing module selects the output signal of the decoding module as the output signal of the music signal processing module, or selects the signal output by the multi-channel mixing module as the output of the music signal processing module.
6. The audio processing circuit of claim 5, wherein the music signal processing module comprises a DSP audio decoding chip.
7. Audio processing circuit according to one of claims 1 to 4, characterized in that the microphone signal processing module comprises a first input interface for connection to a microphone and a second input interface for connection to an instrument.
8. The audio processing circuit of claim 7, wherein said microphone signal processing module comprises a multi-channel DA conversion module and a mixing module for mixing a signal input by a first input interface and a signal input by said second input interface; and the output end of the mixing module is connected with the input end of the multi-channel DA conversion module.
9. The audio processing circuit of claim 8, wherein the mixing module comprises a programmable DSP chip and the DA conversion module comprises a DA conversion chip.
10. An audio playing device, comprising a multi-channel speaker, a power amplifier module and the audio processing circuit of any one of claims 1 to 9; the input end of the power amplifier module is connected with the output end of the mute switch, and the output end of the power amplifier module is connected with the input end of the multi-channel sound box.
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| CN202020317377.0U CN212211372U (en) | 2020-03-13 | 2020-03-13 | Audio processing circuit and audio playing device |
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| CN202020317377.0U CN212211372U (en) | 2020-03-13 | 2020-03-13 | Audio processing circuit and audio playing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114205717A (en) * | 2021-11-19 | 2022-03-18 | 深圳摩罗志远科技有限公司 | Earphone amplifier circuit |
| CN117234454A (en) * | 2023-11-13 | 2023-12-15 | 福建联迪商用设备有限公司 | Multichannel audio output control method and device and electronic equipment |
-
2020
- 2020-03-13 CN CN202020317377.0U patent/CN212211372U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114205717A (en) * | 2021-11-19 | 2022-03-18 | 深圳摩罗志远科技有限公司 | Earphone amplifier circuit |
| CN114205717B (en) * | 2021-11-19 | 2024-01-05 | 深圳摩罗志远科技有限公司 | Headset amplifier circuit |
| CN117234454A (en) * | 2023-11-13 | 2023-12-15 | 福建联迪商用设备有限公司 | Multichannel audio output control method and device and electronic equipment |
| CN117234454B (en) * | 2023-11-13 | 2024-02-20 | 福建联迪商用设备有限公司 | Multichannel audio output control method and device and electronic equipment |
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