CN109587600B - Multi-channel audio multiplexing device and electronic equipment - Google Patents
Multi-channel audio multiplexing device and electronic equipment Download PDFInfo
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- CN109587600B CN109587600B CN201710662552.2A CN201710662552A CN109587600B CN 109587600 B CN109587600 B CN 109587600B CN 201710662552 A CN201710662552 A CN 201710662552A CN 109587600 B CN109587600 B CN 109587600B
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Abstract
The invention relates to the technical field of audio multiplexing, in particular to a multiplexing device of multi-channel audio and an electronic device, wherein the device comprises: the narrow-band communication module is provided with a first recording unit and a first sound emitting unit; the broadband communication module is provided with a second recording unit and a second sound generation unit, the first recording unit is used for recording the sound played by the second sound generation unit, and the second recording unit is used for recording the sound played by the first sound generation unit. Through the mode, the embodiment of the invention can ensure that the audio signals are transmitted between the narrow-band communication module and the broadband communication module timely and completely, and the problem of time difference in the switching process of a multi-audio switch in the prior art is solved, so that the audio signals transmitted between the narrow-band communication module and the broadband communication module are purer.
Description
Technical Field
The present invention relates to the field of audio multiplexing technologies, and in particular, to a device and an electronic device for multiplexing multiple audio channels.
Background
Private network communication technology has been developed to the narrowband digital talkback era, but with the development of science and technology, narrowband talkback service can not meet the requirements of the industry, new industry requirements need to have the requirements of 'call communication, clear listening, clear seeing, pulling' and the like, so that broadband service is promoted to the national strategic height, and in order to ensure that the broadband service is developed, the massive investment of early narrowband is not influenced, so that the national level proposes the concept of 'converged communication', including analog-digital fusion, public network private network fusion, broadband narrowband fusion and the like. One of the core difficulties in implementing wide-narrow fusion is how to implement multi-channel audio system fusion.
Now, what is used to solve the above problems is a multi-audio switch switching technology, that is, an audio channel analog switch mode is used to share a microphone and a speaker. The broadband system is generally provided with a set of complete audio DSP system, including a transmitting channel, a built-in audio coding and decoding CODEC, a receiving channel, a playing channel, a noise reduction circuit and the like, and is relatively complete, and the narrowband system is generally provided with simple transmitting, playing and audio coding and decoding circuits and the like, so that the playing and calling can be switched in real time according to the actual scene requirements as long as the receiving channel is realized.
In the process of implementing the invention, the inventor of the invention finds that the following problems exist in the prior art: in the process of solving the problems in the prior art, the time difference exists in the switching process of the multi-audio switch, so that the final audio signal is delayed, and the final audio signal is not pure enough.
Disclosure of Invention
The technical problem mainly solved by the embodiments of the present invention is to provide a device and an electronic apparatus for multiplexing multiple audio frequencies, which can enable a first recording unit of a narrowband communication module to record sound played by a second sound generation unit of a wideband communication module, and a second recording unit of the narrowband communication module to record sound played by a first sound generation unit of the wideband communication module, so as to ensure that sound signals between the narrowband communication module and the wideband communication module can be timely and completely transmitted, avoid a time difference problem in a multi-audio-frequency switch switching process, and enable audio signals transmitted between the narrowband communication module and the wideband communication module to be cleaner.
In order to solve the above technical problem, in a first aspect, an embodiment of the present invention adopts a technical solution that: there is provided an apparatus for multiplexing audio, comprising:
the narrow-band communication module is provided with a first recording unit and a first sound emitting unit;
the broadband communication module is provided with a second recording unit and a second sound generation unit, the first recording unit is used for recording the sound played by the second sound generation unit, and the second recording unit is used for recording the sound played by the first sound generation unit;
when the narrow-band signal needs to be sent, the second pronunciation unit is used for playing the analog voice signal of the external voice acquired by the broadband communication module, the first recording unit is used for recording the analog voice signal of the external voice, and the narrow-band communication module converts the external voice into the internal narrow-band signal for sending; when the narrow-band communication module receives an external narrow-band signal, the first sound-emitting unit is used for playing an analog voice signal corresponding to the external narrow-band signal, the second sound-recording unit is used for recording the analog voice signal corresponding to the external narrow-band signal, and the wide-band communication module plays the recorded analog voice signal corresponding to the external narrow-band signal.
Optionally, the first sound recording unit and the second sound generating unit are connected through a first closed channel, and the first sound generating unit and the second sound recording unit are connected through a second closed channel.
Optionally, the narrowband communication module further includes:
the narrow-band transceiving antenna is used for receiving an external narrow-band signal and sending out an internal narrow-band signal;
the first modem is used for acquiring an external narrowband signal from the narrowband transceiving antenna and transmitting an internal narrowband signal to the narrowband transceiving antenna;
the coder-decoder is used for converting the analog voice signal received by the narrow-band communication module into a digital voice signal and converting the digital voice signal in the narrow-band communication module into an analog voice signal; the coder-decoder is respectively connected with the first recording unit and the first sound-emitting unit, receives the analog voice signal recorded by the first recording unit, and transmits the analog voice signal obtained after the digital-to-analog conversion to the first sound-emitting unit;
and the micro control unit is used for coding the digital voice signal obtained after the analog-to-digital conversion of the coder-decoder into an internal narrowband signal, transmitting the internal narrowband signal to the first modem, acquiring an external narrowband signal from the first modem and transmitting the external narrowband signal to the coder-decoder.
Optionally, the broadband communication module further includes:
the broadband transceiving antenna is used for receiving external broadband signals and sending out internal broadband signals;
the second modem is used for acquiring an external broadband signal from the broadband transceiving antenna and transmitting the internal broadband signal to the broadband transceiving antenna;
the first chip is used for converting the analog voice signal received by the broadband communication module into a digital voice signal and converting the digital voice signal in the broadband communication module into an analog voice signal; the first chip is respectively connected with the second recording unit and the second pronunciation unit; the first chip is connected with a microphone, the microphone is used for recording sound signals outside the device, the first chip is connected with a loudspeaker, and the loudspeaker is used for sending the sound signals to the outside of the device;
and the second chip is used for switching the broadband communication module to a pronunciation mode when the first chip converts the analog voice signal received from the broadband communication module into a digital voice signal, decoding the broadband signal when the broadband transceiving antenna receives the broadband signal, and transmitting the decoded signal to the first chip.
Optionally, the second chip is a digital signal processor.
Optionally, the microphone comprises a noise canceling microphone.
In a second aspect, an aspect of the embodiments of the present invention is to provide an electronic device for multiplexing audio, including any one of the above apparatuses.
The beneficial effects of the embodiment of the invention are as follows: different from the situation in the prior art, the embodiment of the invention can enable the first recording unit of the narrowband communication module to record the sound played by the second sounding unit of the broadband communication module, and the second recording unit of the narrowband communication module to record the sound played by the first sounding unit of the broadband communication module, so as to ensure that the sound signals between the narrowband communication module and the broadband communication module can be transmitted timely and completely, thereby avoiding the problem of time difference in the switching process of a multi-audio switch in the prior art, and enabling the audio signals transmitted between the narrowband communication module and the broadband communication module to be purer.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
FIG. 1 is a schematic diagram of an embodiment of the apparatus for multiplexing audio according to the present invention;
fig. 2 is another schematic diagram of an embodiment of the apparatus for multiplexing audio according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, an embodiment of the present invention provides an apparatus for multiplexing multiple audios, where the apparatus 01 includes:
a narrowband communication module 10 provided with a first recording unit 101 and a first sound emitting unit 102;
the broadband communication module 11 is provided with a second recording unit 111 and a second pronunciation unit 112, the first recording unit 101 is used for recording the sound played by the second pronunciation unit 112, and the second recording unit 111 is used for recording the sound played by the first pronunciation unit 102;
when a narrowband signal needs to be sent, the second pronunciation unit 112 is configured to play an analog voice signal of an external voice acquired by the wideband communication module 11, the first recording unit 101 is configured to record an analog voice signal of an external voice, and the narrowband communication module 10 converts the external voice into an internal narrowband signal for sending; when the narrowband communication module 10 receives an external narrowband signal, the first sound emitting unit 102 is configured to play an analog voice signal corresponding to the external narrowband signal, the second sound recording unit 111 is configured to record the analog voice signal corresponding to the external narrowband signal, and the broadband communication module 11 plays an analog voice signal corresponding to the recorded external narrowband signal.
In the embodiment of the present invention, the narrowband communication module 10 and the broadband communication module 11 are merged without using a multi-tone switch for switching, and specifically, by correspondingly connecting the first sound recording unit 101 with the second pronunciation unit 112, correspondingly connecting the second sound recording unit 111 with the first pronunciation unit 102, so that the first recording unit 101 can record the sound played by the second pronunciation unit 112, the second recording unit 111 can record the sound played by the first pronunciation unit 102, and the narrow-band communication module 10 and the wide-band communication module 11 are integrated, thereby ensuring that the voice signal is transmitted between the narrow-band communication module 10 and the wide-band communication module 11 timely, quickly and completely, avoiding the problem that the voice signal is delayed or the tail sound is incomplete due to the time difference in the process of switching the multi-audio switch, making the audio signal passed between the narrowband communication module 10 and the wideband communication module 11 cleaner.
Further, in order to avoid external sounds entering and causing interference when the narrowband communication module 10 and the broadband communication module 11 perform voice signal transmission, in the embodiment of the present invention, the first sound recording unit 101 and the second sound generating unit 112 are connected through a first closed channel (not labeled), and the first sound generating unit 102 and the second sound recording unit 111 are connected through a second closed channel (not labeled), when the first sound recording unit 101 records sounds played by the second sound generating unit 112, the sounds played by the second sound generating unit 112 can only be transmitted in the first closed channel, and the external sounds cannot enter the first closed channel, so that the external sounds are prevented from causing interference to the sounds recorded by the first sound recording unit 101.
Referring to fig. 2, in detail, in the embodiment of the present invention, the narrowband communication module 10 further includes:
a narrow-band transmitting/receiving antenna 103 for receiving an external narrow-band signal and transmitting an internal narrow-band signal;
a first modem 104, configured to obtain an external narrowband signal from the narrowband transceiver antenna 103, and transmit an internal narrowband signal to the narrowband transceiver antenna 103, where optionally, the first modem 104 is a DMR module (Digital mobile radio module, data mobile radio module);
a codec 105 for converting an analog voice signal received by the narrowband communication module 10 into a digital voice signal and converting the digital voice signal in the narrowband communication module 10 into an analog voice signal; the CODEC 105 is connected to the first recording unit 101 and the first sound emitting unit 102, respectively, the CODEC 105 receives the analog voice signal recorded by the first recording unit 101, the first sound emitting unit 102 receives the analog voice signal obtained by the CODEC 105 through digital-to-analog conversion, and optionally, the CODEC 105 is a DMR (multimedia digital signal CODEC);
a micro control Unit 106, configured to encode a digital voice signal obtained by performing analog-to-digital conversion on the codec 105 into an internal narrowband signal, transmit the internal narrowband signal to the first modem 104, and obtain an external narrowband signal from the first modem 104 and transmit the external narrowband signal to the codec 105, where optionally, the micro control Unit 106 is an MCU (micro controller Unit).
Optionally, the broadband communication module 11 includes:
a broadband transceiving antenna 113 for receiving an external broadband signal and transmitting an internal broadband signal;
a second modem 114 for acquiring an external broadband signal from the broadband transceiving antenna 113 and transmitting an internal broadband signal to the broadband transceiving antenna 113;
a first chip 115 for converting an analog voice signal received by the broadband communication module 11 into a digital voice signal and converting a digital voice signal in the broadband communication module 11 into an analog voice signal; the first chip 115 is connected to the second recording unit 111 and the second pronunciation unit 112, optionally, the first chip 115 is an MT6351 codec, the first chip 115 is connected to a microphone (not shown) for recording an external sound signal, the first chip 115 is connected to a speaker (not shown) for sending the sound signal to the outside of the device;
a second chip 116, configured to switch the broadband communication module 11 to the voice mode when the first chip 115 converts the analog voice Signal received by the broadband communication module 11 into a Digital voice Signal, and configured to decode the broadband Signal and transmit the decoded Signal to the first chip 115 when the broadband transceiving antenna 113 receives the broadband Signal, optionally, the second chip 116 is a Digital Signal Processing (DSP), further, the Digital Signal processor may buffer the Digital voice Signal in the broadband communication module 11, and further, when the transceiving units of the narrowband communication module 10 and the broadband communication module 11 both receive an external Signal, the Digital Signal processor selects a voice Signal to be preferentially processed for playing according to a preset playing priority.
Further, in order to better analyze the signal transmission process during the operation of the device 01, three operation conditions of the device 01 are described as follows:
in the first case: when a narrow-band signal needs to be sent, the microphone of the broadband communication module 11 records an external analog voice signal and transmits the analog voice signal to the first chip 115, the first chip 115 converts the analog voice signal into a digital voice signal and transmits the digital voice signal to the second chip 116, at this time, the second chip 116 switches the recording mode of the broadband communication module 11 into a sound-emitting mode and transmits the digital voice signal to the first chip 115, the first chip 115 converts the digital voice signal into an analog voice signal and transmits the analog voice signal to the second sound-emitting unit 112, the second sound-emitting unit 112 transmits the analog voice signal to the second sound-emitting unit 111 through the first closed channel, the second sound-emitting unit 111 transmits the recorded analog voice signal to the codec 105, the codec 105 converts the analog voice signal into a digital voice signal and transmits the digital voice signal to the micro control unit 106, the micro control unit 106 encodes the digital voice signal into a narrowband signal and transmits the narrowband signal to the first modem 104, the first modem 104 transmits the narrowband signal to the narrowband transceiving antenna 103, and the narrowband transceiving antenna 103 transmits the narrowband signal.
In the second case: when the narrowband communication module 10 receives an external narrowband signal, firstly, the narrowband transceiving antenna 103 receives a narrowband signal and transmits the narrowband signal to the first modem 104, the first modem 104 transmits the narrowband signal to the micro control unit 106, the micro control unit 106 transmits the narrowband signal to the codec 105, the codec 105 converts a digital voice signal in the narrowband signal into an analog voice signal and transmits the analog voice signal to the first sound emitting unit 102, the first sound emitting unit 102 transmits the analog voice signal to the first sound recording unit 101 through the second closed channel, the first sound recording unit 101 transmits the received analog voice signal to the first chip 115, the first chip 115 converts the analog voice signal into a digital voice signal and transmits the digital voice signal to the second chip 116, at this time, the second chip 116 switches the sound recording mode of the wideband communication module 11 into a sound recording mode and transmits the digital voice signal to the first chip 115, the first chip 115 converts the digital voice signal into an analog voice signal and transmits the analog voice signal to a speaker, which transmits the analog voice signal to the outside of the device 01.
In the third case: when the broadband communication module 11 receives an external broadband signal, firstly, the broadband transceiver antenna 113 receives the broadband signal and transmits the broadband signal to the second modem 114, the second modem 114 transmits the broadband signal to the second chip 116, the second chip 116 decodes the broadband signal and transmits the decoded broadband signal to the first chip 115, the first chip 115 converts a digital voice signal in the broadband signal into an analog voice signal and transmits the analog voice signal to the speaker, and the speaker transmits the analog voice signal to the outside of the device 01.
It should be noted that the operation process of the apparatus 01 according to the embodiment of the present invention includes, but is not limited to, the above three cases.
In the embodiment of the present invention, the narrowband communication module 10 and the broadband communication module 11 are fused without using a multi-audio switch for switching, wherein the first recording unit 101 is correspondingly connected to the second sound generating unit 112, and the second recording unit 111 is correspondingly connected to the first sound generating unit 102, so that the first recording unit 101 can record the sound played by the second sound generating unit 112, and the second recording unit 111 can record the sound played by the first sound generating unit 102, so as to realize the fusion of the narrowband communication module 10 and the broadband communication module 11, thereby ensuring the fast and complete transmission of the voice signal between the narrowband communication module 10 and the broadband communication module 11 in time, avoiding the problem of time difference in the process of switching the multi-audio switch, which results in delay of the voice signal or incomplete end sound, and making the audio signal transmitted between the narrowband communication module 10 and the broadband communication module 11 cleaner, in addition, the first recording unit 101 is connected to the second sounding unit 112 through a first closed channel, and the second recording unit 111 is connected to the first sounding unit 102 through a second closed channel, so that external sound entering and interference to the analog voice signal are avoided when the analog voice signal is transmitted between the narrowband communication module 10 and the broadband communication module 11, and further, the audio signal transmitted between the narrowband communication module 10 and the broadband communication module 11 is cleaner.
The embodiment of the invention also provides a multiplex audio multiplexing electronic device, which at least comprises a narrow-band communication module 10, a first audio recording unit 101 and a first sound emitting unit 102; the broadband communication module 11 is provided with a second recording unit 111 and a second pronunciation unit 112, the first recording unit 101 is used for recording the sound played by the second pronunciation unit 112, and the second recording unit 111 is used for recording the sound played by the first pronunciation unit 102; and any combination of any unit of the above apparatus 01, so that the electronic device can realize the functions and advantages of the apparatus 01.
The electronic device of embodiments of the present invention exists in a variety of forms, including but not limited to: an electronic device: the device for providing computing services, the electronic device comprises a processor, a hard disk, a memory, a system bus and the like, the electronic device is similar to a general computer architecture, but the device has high requirements on processing capability, stability, reliability, safety, expandability, manageability and the like because high-reliability services need to be provided. Or other electronic devices with data interaction functions.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. An apparatus for multiplexing audio, comprising:
the narrow-band communication module is provided with a first recording unit and a first sound emitting unit;
the broadband communication module is provided with a second recording unit and a second sound generation unit, the first recording unit is used for recording the sound played by the second sound generation unit, and the second recording unit is used for recording the sound played by the first sound generation unit;
when a narrow-band signal needs to be sent, the second pronunciation unit is used for playing an analog voice signal corresponding to an external voice acquired by the broadband communication module, the first recording unit is used for recording the analog voice signal corresponding to the external voice, and the narrow-band communication module converts the external voice into an internal narrow-band signal for sending; when the narrow-band communication module receives an external narrow-band signal, the first sound-emitting unit is used for playing an analog voice signal corresponding to the external narrow-band signal, the second sound-recording unit is used for recording the analog voice signal corresponding to the external narrow-band signal, and the wide-band communication module plays the analog voice signal corresponding to the recorded external narrow-band signal.
2. The apparatus of claim 1,
the first recording unit is connected with the second pronunciation unit through a first closed channel, and the first pronunciation unit is connected with the second recording unit through a second closed channel.
3. The apparatus of claim 1, wherein the narrowband communication module further comprises:
the narrow-band transceiving antenna is used for receiving the external narrow-band signal and sending the internal narrow-band signal out;
the first modem is used for acquiring an external narrowband signal from the narrowband transceiving antenna and transmitting the internal narrowband signal to the narrowband transceiving antenna;
the coder-decoder is used for converting the analog voice signal received by the narrow-band communication module into a digital voice signal and converting the digital voice signal in the narrow-band communication module into an analog voice signal; the coder-decoder is respectively connected with the first recording unit and the first sound emitting unit, receives the analog voice signal recorded by the first recording unit, and transmits the analog voice signal obtained after digital-to-analog conversion to the first sound emitting unit;
and the micro control unit is used for coding a digital voice signal obtained after the coder-decoder performs analog-to-digital conversion into an internal narrowband signal, transmitting the internal narrowband signal to the first modem, acquiring an external narrowband signal from the first modem and transmitting the external narrowband signal to the coder-decoder.
4. The apparatus of claim 1, wherein the broadband communication module comprises:
the broadband transceiving antenna is used for receiving external broadband signals and sending out internal broadband signals;
a second modem for acquiring an external broadband signal from the broadband transceiving antenna and transmitting the internal broadband signal to the broadband transceiving antenna;
the first chip is used for converting the analog voice signal received by the broadband communication module into a digital voice signal and converting the digital voice signal in the broadband communication module into an analog voice signal; the first chip is respectively connected with the second recording unit and the second pronunciation unit; the first chip is connected with a microphone, the microphone is used for recording sound signals outside the device, the first chip is connected with a loudspeaker, and the loudspeaker is used for sending the sound signals to the outside of the device;
and the second chip is used for switching the broadband communication module to a pronunciation mode when the first chip converts the analog voice signal received from the broadband communication module into a digital voice signal, decoding the broadband signal when the broadband transceiving antenna receives the broadband signal, and transmitting the decoded signal to the first chip.
5. The apparatus of claim 4,
the second chip is a digital signal processor.
6. The apparatus of claim 4,
the microphone comprises a noise canceling microphone.
7. An electronic device for multiplexing audio, comprising the apparatus of any of claims 1 to 6.
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| WO2023206505A1 (en) * | 2022-04-29 | 2023-11-02 | 海能达通信股份有限公司 | Multi-mode terminal and speech processing method for multi-mode terminal |
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| US8023673B2 (en) * | 2004-09-28 | 2011-09-20 | Hearworks Pty. Limited | Pitch perception in an auditory prosthesis |
| CN105007543B (en) * | 2014-04-18 | 2020-09-04 | 腾讯科技（深圳）有限公司 | Intercommunication method, device, equipment and system |
| CN105025396B (en) * | 2014-04-30 | 2019-03-12 | 杭州优能通信系统有限公司 | Realize method, system and the cluster cloud base station of private network and public network interphone communication |
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