CN113316047A - Pickup equipment - Google Patents
Pickup equipment Download PDFInfo
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- CN113316047A CN113316047A CN202110413817.1A CN202110413817A CN113316047A CN 113316047 A CN113316047 A CN 113316047A CN 202110413817 A CN202110413817 A CN 202110413817A CN 113316047 A CN113316047 A CN 113316047A
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- signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2203/00—Details of circuits for transducers, loudspeakers or microphones covered by H04R3/00 but not provided for in any of its subgroups
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The application discloses pickup equipment, including the binary channels switch, have first input channel, second input channel and output channel, output channel can communicate with first input channel or second input channel, and first input channel passes through the input of back production circuit connection speaker, and one of them pickup circuit is connected to the second input channel, and all the other pickup circuits then connect the controller, and the output channel of binary channels switch is still connected to the controller simultaneously. When the loudspeaker is opened, the controller can control the output channel to be communicated with the first input channel, and when the loudspeaker is closed, the controller can control the output channel to be communicated with the second input channel. That is to say, when the speaker was opened, the controller can acquire the input signal of speaker and the acquisition signal of all the other pickup circuits simultaneously, realized the echo cancellation function, and when the speaker was closed and does not need the echo cancellation function promptly, the steerable all pickup circuits of controller all were used for gathering the signal and acquire the signal of gathering, improved pickup equipment's pickup effect.
Description
Technical Field
The application relates to the technical field of intelligent hardware, in particular to pickup equipment.
Background
With the development of the intelligent hardware technology, the intelligent hardware with the sound pickup function also has an echo cancellation function, namely, an echo cancellation circuit is added in the intelligent hardware, and the echo cancellation is carried out on the voice signal collected by a microphone of the sound pickup circuit so as to obtain the sound pickup signal to be collected, and echo of the sound pickup signal is removed. For intelligent hardware with high integration level or simple chip design, the amount of voice data which can be processed is limited, and only one of the sound pickup circuits can be selected as an echo cancellation circuit, but the sound pickup circuit serving as the echo cancellation circuit is idle when the echo cancellation function is not needed, so that the sound pickup effect of the intelligent hardware is reduced.
Disclosure of Invention
The main technical problem who solves of this application provides a pickup apparatus, can improve the pickup effect of pickup apparatus.
In order to solve the technical problem, the application adopts a technical scheme that:
there is provided a sound pickup apparatus including:
a dual channel switch comprising a first input channel, a second input channel, and an output channel, wherein the output channel is communicable with either the first input channel or the second input channel;
a speaker;
the extraction circuit is respectively connected with the input end of the loudspeaker and the first input channel;
a plurality of pickup circuits, wherein one pickup circuit is connected with the second input channel;
and the controller is connected with the output channel and other pickup circuits, and is used for controlling the output channel to be communicated with the first input channel when the loudspeaker is opened and controlling the output channel to be communicated with the second input channel when the loudspeaker is closed.
Wherein the controller comprises a first control circuit coupled to the speaker for controlling the speaker to be turned on or off; when the first control circuit outputs a first signal to the speaker, the speaker is turned on; when the first control circuit outputs a second signal to the loudspeaker, the loudspeaker is closed; wherein the first signal and the second signal are different.
Wherein the controller further comprises a second control circuit coupled to the output channel and the first control circuit for outputting a third signal to control the output channel to communicate with the first input channel when the first control circuit outputs the first signal and for outputting a fourth signal to control the output channel to communicate with the second input channel when the first control circuit outputs the second signal; wherein the third signal and the fourth signal are different.
The controller further comprises an audio processing circuit, connected with the second control circuit and the rest of pickup circuits, and used for acquiring pickup signals by using the extraction circuit and the rest of pickup circuits when the second control circuit outputs the third signal and acquiring pickup signals by using all of the pickup circuits when the second control circuit outputs the fourth signal.
All the other pickup circuits comprise a microphone, the audio processing circuit is specifically used for acquiring the audio signal input to the loudspeaker from the pickup circuit when the output channel is communicated with the first input channel, acquiring a first acquisition signal of the microphone from all the other pickup circuits, and acquiring the pickup signal by using the audio signal and the first acquisition signal.
The audio processing circuit is specifically configured to cancel the audio signal from the first captured signal to obtain the pickup signal.
The controller further comprises a preprocessing circuit, which is connected with the second control circuit, the rest pickup circuits and the audio processing circuit and is used for converting the first acquisition signal and the audio signal into a format compatible with the audio processing circuit.
Wherein, many pickup circuits all include a microphone, audio processing circuit specifically is used for output channel with during the second input channel intercommunication, follow many pickup circuits acquire the second acquisition signal of microphone, and utilize the second acquisition signal acquires pickup signal.
The controller further comprises a preprocessing circuit, which is connected with the second control circuit, the rest of pickup circuits and the audio processing circuit, and is used for converting the second collected signal into a format compatible with the audio processing circuit and transmitting the second collected signal to the audio processing circuit, so that the audio processing circuit takes the converted second collected signal as the pickup signal.
The preprocessing circuit is further used for integrating initial signals collected by the microphones corresponding to the multiple pickup circuits into the second collected signals.
The beneficial effect of this application is: be different from prior art's condition, the pickup equipment that this application provided includes the binary channels switch, and it has first input channel, second input channel and output channel, and wherein output channel can communicate with first input channel or second input channel, and first input channel passes through the input of back production circuit connection speaker, and one of them pickup circuit is connected to the second input channel, and other pickup circuits then connect the controller, and the output channel of binary channels switch is still connected to the controller simultaneously. When the loudspeaker is opened, the controller can control the output channel to be communicated with the first input channel, and when the loudspeaker is closed, the controller can control the output channel to be communicated with the second input channel. That is to say, when the speaker was opened, the controller can acquire the input signal of speaker and the acquisition signal of all the other pickup circuits simultaneously, realized the echo cancellation function, and when the speaker was closed and does not need the echo cancellation function promptly, the steerable all pickup circuits of controller all were used for gathering the signal and acquire the signal of gathering, improved pickup equipment's pickup effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of a sound pickup apparatus according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application belong to the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a sound pickup apparatus according to the present application, where the sound pickup apparatus includes a dual-channel switch 11, a speaker 12, a back-sampling circuit 13, a plurality of sound pickup circuits 14, and a controller 15.
Therein, the dual channel switch 11 comprises a first input channel 111, a second input channel 112 and an output channel 113, wherein the output channel 113 may be in communication with the first input channel 111 or the second input channel 112. That is, the dual-channel switch 11 is a Single Pole Double Throw (SPDT) switch, and the output channel 113 can selectively obtain the input signal from the first input channel 111 or the second input channel 112.
The extraction circuit 13 is connected to the input terminal of the speaker 12 and the first input channel 111, respectively. That is, when the speaker 12 has an input signal, the extraction circuit 13 may extract the audio signal played by the speaker 12 and input the audio signal into the first input channel 111, so that the controller 15 can obtain the extracted audio signal when the output channel 113 is communicated with the first input channel 111. Wherein, after the audio signal is played by the speaker 12, it may need to be subjected to signal scaling processing, and the extraction circuit 13 preferably performs inverse scaling processing on the extracted audio signal to obtain a signal as close to or the same as the acquired signal at the microphone where the playing signal of the speaker 12 is transmitted to the sound pickup circuit as possible. The specific stoping process is the same as that in the prior art, and is not described herein again, and a functional module specifically used for stoping in the stoping circuit 13 is not additionally shown in fig. 1.
Wherein, one of the sound pickup circuits 141 of the multiple sound pickup circuits 14 is connected to the second input channel 112, so that when the output channel 113 is communicated with the second input channel 112, the controller 15 can obtain the signals collected by the sound pickup circuit 141. Fig. 1 schematically shows a case of three sound pickup circuits, one of which is designated 141 and the other two of which are designated 142, connected to the second input channel 112. In other embodiments, the number of the sound pickup circuits may be other, but at least two sound pickup circuits are provided, wherein one sound pickup circuit is connected to the second input channel, and the other sound pickup circuit is connected to the controller, that is, the number of the remaining sound pickup circuits is at least one.
The controller 15 is connected to the output channel 113 and the remaining sound pickup circuit 142, and is configured to control the output channel 113 to communicate with the first input channel 111 when the speaker 12 is open, and to control the output channel 113 to communicate with the second input channel 112 when the speaker 12 is closed.
It can be seen that, when the speaker 12 of the sound pickup apparatus in this embodiment is opened, the output channel 113 is communicated with the first input channel 111, and the controller 15 can acquire the audio signal output by the speaker 12 through the back-pickup circuit 13, and simultaneously acquire the first collected signal collected by the microphone through the remaining sound pickup circuits 142, so as to perform echo cancellation by using the audio signal and the first collected signal subsequently. When the speaker 12 of the sound pickup apparatus is turned off, the output channel 113 is communicated with the second input channel 112, and the controller 15 can acquire a second acquired signal acquired by the microphone in one of the sound pickup circuits 141 and the remaining sound pickup circuits 142.
That is, the extraction circuit 13 and one of the sound pickup circuits 141 transmit signals to the controller 15 through the output channel 113 in a time-sharing manner, and the amount of data to be processed by the controller 15 is always the same as the number of the sound pickup circuits 14. When the speaker 12 is turned on, the controller 15 implements an echo cancellation function; when the loudspeaker 12 is closed, the controller 15 can obtain more signals collected by one microphone than when the loudspeaker 12 is opened, and when the echo cancellation function is not needed, the data processing capability of the controller 15 is fully utilized to obtain a better sound pickup effect.
In some embodiments, with continued reference to fig. 1, the controller 15 includes a first control circuit 151 coupled to the speaker 12 for controlling the speaker 12 to be turned on or off. When the first control circuit 151 outputs the first signal to the speaker 12, the speaker 12 is turned on; when the first control circuit 152 outputs the second signal to the speaker 12, the speaker 12 is turned off; wherein the first signal and the second signal are different. That is, when it is necessary to play an audio signal using the speaker 12, the first control circuit 151 outputs a first signal to the speaker 12, and when it is not necessary to play an audio signal using the speaker 12, the first control circuit 151 outputs a second signal to the speaker 12.
Further, the controller 15 further includes a second control circuit 152 coupled to the output channel 113 of the dual-channel switch 11 and the first control circuit 151, for outputting a third signal to control the output channel 113 to communicate with the first input channel 111 when the first control circuit 151 outputs the first signal, and for outputting a fourth signal to control the output channel 113 to communicate with the second input channel 112 when the first control circuit 151 outputs the second signal. Wherein the third signal and the fourth signal are different. That is, when the second control circuit 152 outputs the third signal, the output channel 113 communicates with the first input channel 111, and when the second control circuit 152 outputs the fourth signal, the output channel 113 communicates with the second input channel 112.
Further, the controller 15 further includes an audio processing circuit 153 connected to the second control circuit 152 and the remaining sound pickup circuits 142, for acquiring sound pickup signals by the pickup circuit 13 and the remaining sound pickup circuits 142 when the second control circuit 152 outputs the third signal, and for acquiring sound pickup signals by all the sound pickup circuits 14 when the second control circuit 152 outputs the fourth signal.
As can be seen from the above, when the first control circuit 151 outputs the first signal, the speaker 12 is turned on, and at this time, the second control circuit 152 outputs the third signal, the output channel 113 is controlled to communicate with the first input channel 111, and the audio signal output by the speaker 12 is obtained through the extraction circuit 13, so that the audio signal can also be obtained by the audio processing circuit 153 connected to the second control circuit 152. Meanwhile, the audio processing circuit 153 acquires the first collected signal collected by the microphone among the other sound collecting circuits 142, and acquires the sound collecting signal by using the audio signal and the first collected signal. Specifically, the audio processing circuit 153 eliminates the audio signal from the first captured signal to obtain the pickup signal.
For example, in a specific application scenario, the first control circuit 151 sends a first signal to control the speaker 12 to be turned on and output an audio signal, the second control circuit 152 sends a third signal to control the output channel 113 to communicate with the first input channel 111, so that the audio processing circuit 153 acquires the audio signal and also acquires a first collected signal obtained by mixing the audio signal collected by the microphones in the remaining sound collecting circuits 142 and a voice signal sent by a user, at this time, the audio processing circuit 153 eliminates the audio signal from the first collected signal to obtain a sound collected signal only including the voice signal sent by the user, and the sound collected effect is improved.
The controller 15 further includes a preprocessing circuit 154, connected to the second control circuit 152, the remaining sound pickup circuit 142, and the audio processing circuit 153, for converting the first collected signal and the audio signal into a format compatible with the audio processing circuit 153, so that the audio processing circuit 153 can eliminate the audio signal from the first collected signal. That is, the audio processing circuit 153 acquires the first collected signal and the audio signal after the preprocessing by the preprocessing circuit 154. For example, the audio signal and the first collected signal are both analog signals, and the preprocessing circuit 154 is configured to perform analog-to-digital conversion on the audio signal and the first collected signal to obtain a digital signal that can be processed by the audio processing circuit 153, and then perform cancellation of the audio signal to implement an echo cancellation function.
Preferably, the preprocessing circuit 154 is further configured to filter, reduce noise, and scale the audio signal and the first captured signal, so as to further enhance the sound pickup effect.
In another application scenario, the first control circuit 151 sends out a second signal to control the speaker 12 to be turned off, and no audio signal is output, the second control circuit 152 sends out a fourth signal to control the output channel 113 to be communicated with the second input channel 112, wherein one of the sound pickup circuits 141 and the rest of the sound pickup circuits 142 are both working normally, so that the audio processing circuit 153 acquires second acquired signals acquired by microphones of all the sound pickup circuits 14.
Similarly, the preprocessing circuit 154 performs analog-to-digital conversion on the second collected signal to obtain a digital signal compatible with the audio processing circuit 153, and then the audio processing circuit 153 obtains the preprocessed second collected signal through the preprocessing circuit 154, because the speaker is turned off at this time, the second collected signal is a voice signal sent by the user, and an echo cancellation function is not needed, the audio processing circuit 153 can directly use the converted second collected signal as a pickup signal.
Preferably, the preprocessing circuit 154 is further configured to integrate the initial signals collected by the microphones corresponding to the multiple sound pickup circuits 14 into a second collected signal, which includes filtering, noise reduction, scaling, and the like, so as to further improve the sound pickup effect.
When the loudspeaker is turned on, the controller 15 needs to process three data (one audio data from the loudspeaker 12 and the voice signals collected by the remaining two sound pickup circuits 142), and when the loudspeaker is turned off, the controller 15 still needs to process three data (the voice signals collected by the three sound pickup circuits 14), so that the signal is transmitted to the controller 15 through the output channel 113 by the time sharing of the back pickup circuit 13 and one of the sound pickup circuits 141, and the data amount to be processed by the controller 15 is always the same as the number of the sound pickup circuits 14. When the speaker 12 is turned on, the controller 15 implements an echo cancellation function; when the loudspeaker 12 is closed, the controller 15 can obtain more signals collected by one microphone than when the loudspeaker 12 is opened, and when the echo cancellation function is not needed, the data processing capability of the controller 15 is fully utilized to obtain a better sound pickup effect.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A sound pickup apparatus, comprising:
a dual channel switch comprising a first input channel, a second input channel, and an output channel, wherein the output channel is communicable with either the first input channel or the second input channel;
a speaker;
the extraction circuit is respectively connected with the input end of the loudspeaker and the first input channel;
a plurality of pickup circuits, wherein one pickup circuit is connected with the second input channel;
and the controller is connected with the output channel and other pickup circuits, and is used for controlling the output channel to be communicated with the first input channel when the loudspeaker is opened and controlling the output channel to be communicated with the second input channel when the loudspeaker is closed.
2. The pickup apparatus as recited in claim 1,
the controller comprises a first control circuit coupled with the loudspeaker and used for controlling the loudspeaker to be turned on or off;
when the first control circuit outputs a first signal to the speaker, the speaker is turned on; when the first control circuit outputs a second signal to the loudspeaker, the loudspeaker is closed; wherein the first signal and the second signal are different.
3. The pickup apparatus as recited in claim 2,
the controller further comprises a second control circuit coupled to the output channel and the first control circuit for outputting a third signal to control the output channel to communicate with the first input channel when the first control circuit outputs the first signal and for outputting a fourth signal to control the output channel to communicate with the second input channel when the first control circuit outputs the second signal; wherein the third signal and the fourth signal are different.
4. The pickup apparatus as recited in claim 3,
the controller further comprises an audio processing circuit, the audio processing circuit is connected with the second control circuit and the rest of pickup circuits, and is used for utilizing the extraction circuit and the rest of pickup circuits to acquire pickup signals when the second control circuit outputs the third signal and utilizing all of the pickup circuits to acquire pickup signals when the second control circuit outputs the fourth signal.
5. The pickup apparatus as claimed in claim 4, wherein the remaining pickup circuits each include a microphone, and the audio processing circuit is configured to obtain an audio signal input to the speaker from the pickup circuit and a first pickup signal of the microphone from the remaining pickup circuits when the output channel is communicated with the first input channel, and to obtain the pickup signal using the audio signal and the first pickup signal.
6. The pickup apparatus as recited in claim 5 wherein the audio processing circuit is specifically configured to cancel the audio signal from the first pickup signal to obtain the pickup signal.
7. The pickup apparatus as recited in claim 5 wherein said controller further comprises a pre-processing circuit coupled to said second control circuit, said remaining pickup circuits and said audio processing circuit for converting said first pickup signal and said audio signal into a format compatible with said audio processing circuit.
8. The pickup apparatus as claimed in claim 4, wherein the plurality of pickup circuits each include a microphone, and the audio processing circuit is configured to acquire second pickup signals of the microphones from the plurality of pickup circuits when the output channel is communicated with the second input channel, and to acquire the pickup signals using the second pickup signals.
9. The pickup apparatus as claimed in claim 8, wherein the controller further comprises a pre-processing circuit connected to the second control circuit, the remaining pickup circuits and the audio processing circuit for converting the second pickup signal into a format compatible with the audio processing circuit and transmitting the converted second pickup signal to the audio processing circuit, so that the audio processing circuit uses the converted second pickup signal as the pickup signal.
10. The pickup apparatus as claimed in claim 9, wherein the pre-processing circuit is further configured to integrate initial signals collected by the microphones corresponding to the plurality of pickup circuits into the second collected signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110413817.1A CN113316047B (en) | 2021-04-16 | 2021-04-16 | Pickup equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110413817.1A CN113316047B (en) | 2021-04-16 | 2021-04-16 | Pickup equipment |
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| CN113316047A true CN113316047A (en) | 2021-08-27 |
| CN113316047B CN113316047B (en) | 2023-04-14 |
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| CN202110413817.1A Active CN113316047B (en) | 2021-04-16 | 2021-04-16 | Pickup equipment |
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| CN112243182A (en) * | 2019-07-17 | 2021-01-19 | 北京声智科技有限公司 | Pickup circuit, method and device |
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| JP2008147823A (en) * | 2006-12-07 | 2008-06-26 | Yamaha Corp | Voice conference device, voice conference system, and sound radiation/pickup unit |
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| CN113316047B (en) | 2023-04-14 |
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