CN106921914B - Multichannel audio transmission equipment - Google Patents
Multichannel audio transmission equipment Download PDFInfo
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- CN106921914B CN106921914B CN201510999855.4A CN201510999855A CN106921914B CN 106921914 B CN106921914 B CN 106921914B CN 201510999855 A CN201510999855 A CN 201510999855A CN 106921914 B CN106921914 B CN 106921914B
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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
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
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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
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
The invention is applicable to the field of audio transmission, and provides a multi-channel audio transmission device, which comprises: a multi-channel audio processor for processing multi-channel audio signals, a controller for controlling the operation of the multi-channel audio processor and controlling the input and output of the multi-channel audio transmission device; when multi-channel audio storage is carried out, the controller controls the multi-channel audio processor to convert multi-channel audio analog input signals from the audio recording equipment into multi-channel audio digital input signals and input the multi-channel audio digital input signals to the mobile terminal equipment; when multichannel audio playing is carried out, the controller controls the multichannel audio processor to convert multichannel audio digital output signals from the mobile terminal device into multichannel audio analog output signals and output the multichannel audio analog output signals to the audio playing device, so that the mobile terminal device and the multichannel audio recording device or the multichannel audio playing device are in real-time butt joint, and storage and playing of multichannel audio are facilitated.
Description
Technical Field
The invention belongs to the field of audio transmission, and particularly relates to multichannel audio transmission equipment.
Background
Most of digital devices in the market at present have recording or playing functions, such as recording pens, mobile phones, cameras, headphones, sound boxes, microphones and the like, and these devices are basically based on the inside of the devices for recording or playing, but with the popularity of multichannel audio, more and more audio devices begin to have the function of recording or playing multichannel audio, but in the existing audio devices, the recording and playing of multichannel audio are often separated, the recording and playing of multichannel audio are often implemented on different professional audio devices, the recording and playing of multichannel audio are firstly carried out on one set of audio devices capable of recording multichannel audio, the recorded audio is stored on a special storage device, and then the audio stored in the special storage device is transplanted to another set of audio devices capable of playing multichannel audio for playing, and the special storage device is often larger in size or is solidified on the multichannel recording device or the multichannel playing device respectively, so that the portability is poor and the carrying is inconvenient.
Along with the development of science and technology, mobile terminal equipment is more and more popular and more portable, and has become an indispensable part of people's hand-carrying, if the mobile terminal equipment can dock with multichannel audio recording or playing equipment, then the storage of multichannel audio becomes real-time, convenient, can also play conveniently.
There is no device for interfacing a mobile terminal device with a multi-channel audio recording device or a multi-channel audio playing device in real time.
Disclosure of Invention
The embodiment of the invention provides a multichannel audio transmission device, which aims to solve the problem that no device capable of realizing real-time butt joint between a mobile terminal device and multichannel audio recording equipment or multichannel audio playing equipment exists in the market at present.
The embodiment of the invention is realized in that a multi-channel audio transmission device comprises:
a multi-channel audio processor for processing the multi-channel audio signal;
a controller for controlling the operation of the multi-channel audio processor and controlling the input and output of the multi-channel audio transmission device;
when multi-channel audio storage is carried out, the controller controls the multi-channel audio processor to convert multi-channel audio analog input signals from the audio recording equipment into multi-channel audio digital input signals and input the multi-channel audio digital input signals to the mobile terminal equipment;
when multi-channel audio playing is performed, the controller controls the multi-channel audio processor to convert the multi-channel audio digital output signal from the mobile terminal device into a multi-channel audio analog output signal and output the multi-channel audio analog output signal to the audio playing device.
The invention provides a multichannel audio transmission device, which can give consideration to the input and output of multichannel audio signals and transmit the digitized audio data to a mobile terminal device through a multichannel audio processor for processing multichannel audio signals and a controller for controlling the multichannel audio processor to work and controlling the input and output of the multichannel audio transmission device, thereby realizing the real-time butt joint between the mobile terminal device and a multichannel audio recording device or a multichannel audio playing device, facilitating the storage and playing of multichannel audio, and having small structure and convenient carrying.
Drawings
Fig. 1 is a block diagram of a multi-channel audio transmission apparatus according to an embodiment of the present invention;
fig. 2 is a block diagram of a multi-channel audio transmission device interfacing with an external device according to an embodiment of the present invention;
fig. 3 is a block diagram of an audio signal processing unit according to an embodiment of the present invention;
fig. 4 is a block diagram of an audio signal processing unit with a digital filter according to an embodiment of the present invention;
FIG. 5 is a diagram of a connection between a controller and a multi-channel audio processor according to an embodiment of the present invention;
fig. 6 is a block diagram of a multi-channel audio transmission device having a first transmission unit and a second transmission unit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a multichannel audio transmission device, which can give consideration to the input and output of multichannel audio signals and transmit the digitized audio data to a mobile terminal device through a multichannel audio processor for processing multichannel audio signals and a controller for controlling the multichannel audio processor to work and controlling the input and output of the multichannel audio transmission device, thereby realizing the real-time butt joint between the mobile terminal device and a multichannel audio recording device or a multichannel audio playing device, facilitating the storage and playing of multichannel audio, and having small structure and convenient carrying.
Fig. 1 shows a block diagram of a multi-channel audio transmission device according to an embodiment of the present invention; for ease of illustration, only the modules associated with embodiments of the present invention are shown in detail as follows:
in an embodiment of the present invention, the multi-channel audio transmission apparatus 100 includes: a multi-channel audio processor 10 for processing the multi-channel audio signal; a controller 20 for controlling the operation of the multi-channel audio processor 10 and controlling the input and output of the multi-channel audio transmission apparatus 100. Wherein the multi-channel audio processor 10 comprises one or more audio signal processing units 11 having an audio signal processing function; the controller 20 is a micro control unit MCU/DSP, and can also be a singlechip, ARM or CPU.
Referring to fig. 2, in one embodiment of the present invention, when multi-channel audio storage is performed, the controller 20 controls the multi-channel audio processor 10 to convert multi-channel audio analog signals from the audio recording apparatus 300 into multi-channel audio digital input signals and input the multi-channel audio digital input signals to the mobile terminal apparatus 200, wherein the mobile terminal apparatus 200 may be a mobile phone, a personal digital assistant, a tablet computer, or the like. When multi-channel audio playback is performed, the controller 20 controls the multi-channel audio processor 10 to convert the multi-channel audio digital output signal from the mobile terminal device 200 into a multi-channel audio analog output signal, and output to the audio playback device 400.
In one embodiment of the present invention, each audio signal processing unit 11 may process at least two audio analog input signals from a microphone or at least two audio digital output signals from a mobile terminal device at the same time, and in this embodiment, the audio signal processing unit 11 is an audio CODEC (COder-DECoder) having a digital processing function, i.e., an audio digital signal CODEC.
Referring to fig. 3, in one embodiment of the present invention, the audio signal processing unit 11 includes a multiplexer 111, and a digital-to-analog conversion module 112 and an analog-to-digital conversion module 113 connected to the multiplexer 111; the multiplexer 111 can input and output audio signals of different channels according to a preset rule, and the digital-to-analog conversion module 112 and the analog-to-digital conversion module 113 are respectively used for performing digital-to-analog conversion and analog-to-digital conversion on the audio signals. In detail, when audio storage is performed, the multi-channel selector 111 inputs audio analog input signals of at least two channels to the analog-to-digital conversion module 113 along a preset multi-channel logic circuit, thereby realizing multi-channel input; when playing audio, the multi-channel selector 111 receives the audio analog output signals of at least two channels from the digital-to-analog conversion module 112 and outputs the audio analog output signals to the audio playing device along the preset multi-channel logic circuit, thereby realizing multi-channel output.
In one embodiment of the present invention, the multi-channel audio processor 10 includes one or more audio signal processing units 11, so that the multi-channel audio processor 10 can process two or more audio signals simultaneously, and as the number of audio signal processing units 11 increases, the number of channels that can be processed simultaneously increases.
An embodiment of the present invention provides a multi-channel audio transmission device, which includes a multi-channel audio processor 10 capable of processing 16-channel audio signals, in detail, the multi-channel audio processor 10 has at least 8 audio signal processing units 11, each audio signal processing unit 11 can process two channels of audio signals, and processing of 16-channel or less audio signals is realized, so that the device can interface a multi-channel audio recording and playing device which processes 16-channel or less audio signals with a mobile terminal device, and the requirements of most users in multi-channel audio processing are met.
Referring to fig. 4, in a preferred embodiment of the present invention, the audio signal processing unit 11 further includes a digital filter 114 connected to the digital-to-analog conversion module 112 and the analog-to-digital conversion module 113, and noise generated during the digital-to-analog conversion, analog-to-digital conversion or the channel separation process can be filtered by providing the digital filter 114 to preserve the original sound.
Referring to fig. 5, in one embodiment of the present invention, the controller 20 is connected to the multi-channel audio processor 10 through a signal bus including a control bus 31 for transmitting control commands and one or more audio signal buses 32 for transmitting audio signals. One audio signal bus 32 supports two channels of audio input and output, and each audio signal processing unit 11 corresponds to one audio signal bus 32, that is, each audio signal processing unit 11 processes two channels of audio signals simultaneously.
Referring to fig. 6, in one embodiment of the present invention, the multi-channel audio transmission apparatus 100 further includes a first transmission unit 40, the first transmission unit 40 inputting a multi-channel audio analog input signal from the audio recording apparatus to the multi-channel audio processor 10 or outputting a multi-channel audio analog output signal output from the multi-channel audio processor 10 to the audio playing apparatus; wherein the first transmission unit 40 is an audio signal line or other transmission interface with audio signal transmission function.
In one embodiment of the present invention, the multi-channel audio transmission apparatus 100 further includes a power amplifier for amplifying the multi-channel audio analog output signal to provide a good sound quality output.
In one embodiment of the present invention, the multi-channel audio transmission device 100 further includes a second transmission unit 50, and the second transmission unit 50 transmits the multi-channel audio digital input signal inputted from the controller 20 to the mobile terminal device or transmits the multi-channel audio digital output signal from the mobile terminal device to the controller 20.
In one embodiment of the present invention, the second transmission unit 50 is a wireless transmission module or a wired interface module, or a combination of both a wireless transmission module and the wired interface module, and the interface type of the second transmission unit 50 is adapted to the interface of a common mobile terminal, such as a smart phone, for example, a micro usb interface, a Lighting interface, a bluetooth interface, a WIFI interface, or a 2.4G/5G wireless interface.
The working procedure of the multi-channel audio transmission device 100 provided by the embodiment of the invention is as follows:
when multi-channel audio storage is performed, the first transmission unit 40 receives multi-channel audio analog input signals transmitted by the audio recording device through at least two audio signal lines and inputs the multi-channel audio analog input signals to the multi-channel audio processor 10, and the controller 20 controls the multi-channel audio processor 10 to process the multi-channel audio analog input signals through the control bus 31; the multi-channel audio processor 10 has one or more audio signal processing units 11, each audio signal processing unit 11 receives two channels of audio analog input signals, the audio analog input signals enter the audio signal processing unit 11 and then are input by the multiplexer 111 in a channel manner, and then are input to the analog-to-digital conversion unit 113 for analog-to-digital conversion to form audio digital input signals, the audio digital input signals can be processed by the digital filter 114, the processed audio digital input signals are respectively transmitted to the controller 20 through the audio signal bus 32, and the controller 20 receives and packages the multi-channel audio digital input signals and transmits the multi-channel audio digital input signals to the mobile terminal device for storage in a wired or wireless manner through the second transmission unit 50.
When the multi-channel audio playing is performed, the second transmission unit 50 receives a multi-channel audio digital output signal from the mobile terminal device and outputs the multi-channel audio digital output signal to the controller 20, the controller 20 outputs the signal to the multi-channel audio processor 10 through one or more audio signal buses 32, and controls the multi-channel audio processor 10 to process the signal through the control bus 31, each audio signal processing unit 11 of the multi-channel audio processor 10 receives an audio digital output signal output by one audio signal bus 32, and the audio digital output signal is subjected to noise removal through the digital filter 114, digital-to-analog conversion through the digital-to-analog conversion module 112 and split-channel output through the multiplexer 111; a multi-channel audio analog output signal is obtained, which is output to an audio playback device via the first transmission unit 40.
The embodiment of the invention provides a multi-channel audio transmission device, which can give consideration to the input and output of multi-channel audio signals, and can transmit the audio data after digital processing to a mobile terminal device through a multi-channel audio processor for processing the multi-channel audio signals and a controller for controlling the multi-channel audio processor to work and controlling the input and output of the multi-channel audio transmission device, thereby realizing the real-time butt joint between the mobile terminal device and a multi-channel audio recording device or a multi-channel audio playing device, facilitating the storage and playing of multi-channel audio, and having a compact device structure and convenient carrying.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A multi-channel audio transmission device, comprising:
the multi-channel audio processor is used for processing multi-channel audio signals and comprises one or more audio signal processing units, wherein the audio signal processing units comprise a multiplexer, a digital-to-analog conversion module and an analog-to-digital conversion module, the digital-to-analog conversion module and the analog-to-digital conversion module are connected with the multiplexer, the audio signal processing units further comprise a digital filter, the digital filter is connected with the digital-to-analog conversion module and the analog-to-digital conversion module, the digital filter is arranged behind the digital-to-analog conversion module and the analog-to-digital conversion module, and the digital-to-analog conversion module and the analog-to-digital conversion module are arranged between the multiplexer and the digital filter in parallel;
a controller for controlling the operation of the multi-channel audio processor and controlling the input and output of the multi-channel audio transmission device;
when multi-channel audio storage is carried out, the controller controls the multi-channel audio processor to process multi-channel audio analog input signals from the audio recording device, after the multi-channel audio analog input signals enter the audio signal processing unit, the multi-channel audio analog input signals are subjected to multi-channel input by the multi-channel selector and then are input to the analog-to-digital conversion module to be subjected to analog-to-digital conversion to form multi-channel audio digital input signals, and the formed multi-channel digital audio input signals are packaged by the controller and transmitted to the mobile terminal device for storage after being output by the digital filter;
when multichannel audio playing is carried out, the controller controls the multichannel audio processor to process multichannel audio digital output signals from the mobile terminal equipment, noise is filtered through the digital filter, digital-to-analog conversion is carried out through the digital-to-analog conversion module, and multichannel audio analog output signals are obtained through multichannel output of the multichannel selector and are output to the audio playing equipment.
2. The multi-channel audio transmission device as claimed in claim 1, wherein a control bus for transmitting control instructions and one or more audio signal buses for transmitting the multi-channel audio digital input signals or the multi-channel audio digital output signals are provided between the controller and the multi-channel audio processor, and each of the audio signal processing units corresponds to one of the audio signal buses.
3. The multi-channel audio transmission device of claim 1, further comprising a first transmission unit that inputs the multi-channel audio analog input signal from the audio recording device to the multi-channel audio processor or outputs the multi-channel audio analog output signal output by the multi-channel audio processor to the audio playback device.
4. The multi-channel audio transmission device of claim 1, further comprising a power amplifier for amplifying the multi-channel audio analog output signal.
5. The multi-channel audio transmission device of claim 1, further comprising a second transmission unit that transmits the multi-channel audio digital input signal input by the controller to the mobile terminal device or transmits the multi-channel audio digital output signal from the mobile terminal device to the controller.
6. The multi-channel audio transmission device of claim 5, wherein the second transmission unit is a wireless transmission module or a wired interface module, or a combination comprising both the wireless transmission module and the wired interface module.
7. The multi-channel audio transmission device of claim 6, wherein the second transmission unit is a micro usb interface, a Lighting interface, a bluetooth interface, a WIFI interface, or a 2.4G/5G wireless interface.
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| CN201510999855.4A CN106921914B (en) | 2015-12-26 | 2015-12-26 | Multichannel audio transmission equipment |
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| CN201510999855.4A CN106921914B (en) | 2015-12-26 | 2015-12-26 | Multichannel audio transmission equipment |
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| CN106921914B true CN106921914B (en) | 2023-05-09 |
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| CN108391208B (en) * | 2018-03-30 | 2021-02-02 | Oppo广东移动通信有限公司 | Signal switching method, device, terminal, earphone and computer readable storage medium |
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| CN205454076U (en) * | 2015-12-26 | 2016-08-10 | 森声数字科技（深圳）有限公司 | Multichannel audio transmission equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070087686A1 (en) * | 2005-10-18 | 2007-04-19 | Nokia Corporation | Audio playback device and method of its operation |
| US9454970B2 (en) * | 2013-07-03 | 2016-09-27 | Bose Corporation | Processing multichannel audio signals |
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| CN101494818A (en) * | 2008-12-26 | 2009-07-29 | 广州励丰声光科技有限公司 | Multichannel audio standby system |
| CN102761819A (en) * | 2012-07-24 | 2012-10-31 | 国光电器股份有限公司 | Multi-channel audio output system and method |
| CN203434995U (en) * | 2013-07-22 | 2014-02-12 | 东莞市龙健电子有限公司 | Electronic sound console with multi-output channels |
| CN205454076U (en) * | 2015-12-26 | 2016-08-10 | 森声数字科技（深圳）有限公司 | Multichannel audio transmission equipment |
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