CN103684589A - Audio transmission conversion method and device - Google Patents
Audio transmission conversion method and device Download PDFInfo
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- CN103684589A CN103684589A CN201310673963.3A CN201310673963A CN103684589A CN 103684589 A CN103684589 A CN 103684589A CN 201310673963 A CN201310673963 A CN 201310673963A CN 103684589 A CN103684589 A CN 103684589A
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Abstract
The invention discloses an audio transmission conversion method. According to the technical scheme of the method, the method is characterized in that Bluetooth audio is received by applying a standard Bluetooth audio transmission application layer protocol through a Bluetooth signal receiving device, then, the Bluetooth signals are converted into infrared audio modulation signals through a signal processing device, and finally the infrared audio modulation signals are transmitted through an infrared signal transmitting device. The audio transmission conversion method and device aim to overcome the defects of the existing wireless audio transmission technology, the application in which the Bluetooth and the infrared audio transmission technology are combined is provided, Bluetooth audio playing of standard main end sound source equipment can be supported, and a plurality of sound receiving end devices also can simultaneously receive the audio.
Description
[technical field]
The present invention relates to a kind of method of audio wireless transmission, the invention still further relates to a kind of conversion equipment of audio wireless transmission.
[background technology]
It is also mode the most easily that bluetooth has become main in wireless audio frequency transmission function technology, with end products such as smart mobile phone, panel computers, music has been become to a kind of custom of people to music appreciating on Bluetooth audio device.Bluetooth AV transmits application layer protocol, comprises that A2DP transmission and AVRCP control, and have become the Bluetooth stereo audio transmission standard that smart mobile phone is generally supported.But this audio transmission mode is only supported point-to-point transmission at present, cannot realize " distributed " reception sound system is carried out to " broadcast type " transmitting.
Utilize infrared signal to carry out audio transmission, can realize " broadcast type " transmitting and receive with " distributed ".Its advantage is that cost is low, good, the radnos phase mutual interference of privacy, to the environment outside transmission space, can not cause any destruction, can not have that phase mutual interference between system.Because the power consumption of infrared ray audio transmission is bigger than normal,, between transmission path, can not there be the shortcomings such as any shelter, cause infrared technique to be difficult to be applied to the audio transmission between mobile terminal device.If relatively fix and have " distributed " audio device system of Power supply but utilize infrared acoustic frequency transmission technology to be applied to position, can bring into play to greatest extent the one side of its advantage, and evade its major defect.
Convert Bluetooth audio signals to infrared audio signal, and then carry out broadcast type transmitting, a plurality of acoustics that realize diverse location receive the ANTENN AUDIO transmitting that same source of sound sends simultaneously, can make full use of Bluetooth audio frequency and play the convenience of source of sound and various operations, realize, with bluetooth cellular phone, the playing function of acoustics is carried out to various control at any time.
[summary of the invention]
The object of the invention is to overcome the deficiency of existing wireless audio frequency transmission function technology, a kind of bluetooth and infrared acoustic frequency transmission technology applied in any combination taked is provided, can both can support the Bluetooth audio frequency of standard main side audiogenic device to play, can realize again method and the device of the audio transmission conversion of the audio transmission that a plurality of sound equipment receiving end devices receive simultaneously.
The present invention is achieved by the following technical solutions:
A kind of audio transmission conversion method, it is characterized in that: utilize Bluetooth signal receiving system application standard Bluetooth audio frequency transmission application layer protocol that Bluetooth audio frequency is received, then by signal processing apparatus, Bluetooth signal is converted to infrared acoustic frequency modulation signal, finally by infrared signal emitter, infrared acoustic frequency modulation signal is launched.
A kind of audio transmission conversion equipment, for the Bluetooth signal receiving is converted to infrared signal, it is characterized in that: comprise shell 10, in described shell 10, be provided with for receiving the Bluetooth signal receiving system 101 of the Bluetooth signal that Bluetooth signal emitter sends, on described Bluetooth signal receiving system 101, be connected with the signal processing apparatus 102 that Bluetooth signal is converted to infrared modulated signal, on described signal processing apparatus 102, be connected with for launching the infrared signal emitter 103 of infrared modulated signal, in described shell 10, be provided with the first supply unit 109 that provides power supply for described Bluetooth signal receiving system 101 and described signal processing apparatus 102 and described infrared signal emitter 103.
Audio transmission conversion equipment as above, it is characterized in that: the first described supply unit 109 comprises the prime power module 191 exchanging with direct current conversion, on described prime power module 191, be connected with according to described Bluetooth signal receiving system 101 and require to carry out the bluetooth power module 192 that voltage stabilizing and voltage adjustment process and the infrared power module 193 that requires to carry out voltage stabilizing and voltage adjustment processing according to described infrared signal emitter 103.
Audio transmission conversion equipment as above, is characterized in that: described Bluetooth signal receiving system 101 comprises bluetooth master chip 111, flash memory under program 112, antenna and radio frequency matching circuit 113, audio output interface 114.
Audio transmission conversion equipment as above, is characterized in that: described infrared signal emitter 103 comprises infrared signal modulation circuit 131 and infrared signal drive circuit 132.
Audio transmission conversion equipment as above, is characterized in that: described signal processing apparatus 102 comprises audio adjusting circuit 121 and carrier signal treatment circuit 122.
Audio transmission conversion equipment as above, is characterized in that: on described Bluetooth signal receiving system 101, be connected with analogue audio frequency output port 115.
Audio transmission conversion equipment as above, is characterized in that: described signal processing apparatus 102 is connected with analogue audio frequency input port 104 by audio coupling circuit 125.
Compare with existing similar techniques, the present invention has the following advantages:
1, the present invention adopts Bluetooth technology to combine with infrared technique and realizes wireless transmission audio frequency, and transmission of audio acoustical quality is good, and can realize an audio signal source transmitting, reaches a plurality of sound equipments effect of wireless receiving simultaneously.
2, the present invention can realize stereo audio broadcasting, also can realize multichannel audio and play.The present invention utilizes existing source of sound playing device, without source of sound playing device is set separately, makes full use of existing resource and easy to use.
3, the infrared transmission that the present invention takes can not have any impact to the environment outside space, avoids the air interference between system.
4, the present invention can realize bluetooth main sides such as utilizing smart mobile phone, various remote controls that distributed bluetooth receiving terminal is unified or appointment.Comprise the switch of acoustics volume and houselights and amplitude adjusted etc.
[accompanying drawing explanation]
Fig. 1 is structural principle block diagram of the present invention;
Fig. 2 is that the present invention uses state reference map;
Fig. 3 is that the present invention uses state reference map;
Fig. 4 is the blistered sound equipment stereogram being used in conjunction with the present invention;
Fig. 5 is the blistered sound equipment cutaway view being used in conjunction with the present invention;
Fig. 6 is the torch-type sound equipment stereogram being used in conjunction with the present invention;
Fig. 7 is the switching mode sound equipment stereogram being used in conjunction with the present invention;
Fig. 8 is that the present invention uses state reference map.
[embodiment]
A kind of audio transmission conversion method, utilize Bluetooth signal receiving system application standard Bluetooth audio frequency transmission application layer protocol that Bluetooth audio frequency is received, then by signal processing apparatus, Bluetooth signal is converted to infrared audio signal, finally by infrared signal emitter, infrared audio signal is launched.
A kind of audio transmission conversion equipment, for the Bluetooth signal receiving is converted to infrared signal, comprise shell 10, in described shell 10, be provided with for receiving the Bluetooth signal receiving system 101 of the Bluetooth signal that Bluetooth signal emitter sends, on described Bluetooth signal receiving system 101, be connected with the signal processing apparatus 102 that Bluetooth signal is converted to infrared modulated signal, on described signal processing apparatus 102, be connected with for launching the infrared signal emitter 103 of infrared modulated signal, in described shell 10, be provided with the first supply unit 109 that provides power supply for described Bluetooth signal receiving system 101 and described signal processing apparatus 102 and described infrared signal emitter 103.
Use the acoustics of the audio wireless transmission of audio transmission conversion equipment of the present invention, comprise audio conversion device 1, Bluetooth audio frequency is transformed into the audio conversion device of infrared acoustic frequency transmitting, as Bluetooth audio frequency receiving terminal, supports standard bluetooth audio transmission applications layer protocol.Bluetooth stereo transmission is converted to infrared outer audio signal transmitting.Audio conversion device 1 comprises shell 10, in described shell 10, be provided with the Bluetooth signal receiving system 101 with Bluetooth audio frequency transmission application based on standard bluetooth link, on described Bluetooth signal receiving system 101, be connected with the signal processing apparatus 102 that Bluetooth signal is converted to infrared signal, on described signal processing apparatus 102, be connected with for launching the infrared signal emitter 103 of infrared modulated signal, in described shell 10, be provided with the first supply unit 109 that provides power supply for described Bluetooth signal receiving system 101 and described signal processing apparatus 102 and described infrared signal emitter 103.
The first described supply unit 109 comprises the prime power module 191 exchanging with direct current conversion, is connected with according to described Bluetooth signal receiving system 101 and requires to carry out the bluetooth power module 192 that voltage stabilizing and voltage adjustment process and the infrared power module 193 that requires to carry out voltage stabilizing and voltage adjustment processing according to described infrared signal emitter 103 on described prime power module 191.
Described Bluetooth signal receiving system 101 comprises bluetooth master chip 111, flash memory under program 112, antenna and radio frequency matching circuit 113, audio output interface 114.Take start to power up the rear bluetooth connection status to be matched that automatically enters, so that Bluetooth pairing and the attended operation of simplification and smart mobile phone.Bluetooth signal receiving system receives blue teeth wireless signal, bluetooth core agreement, digital audio processing CODEC, audio frequency DA/AD conversion have been integrated in bluetooth master chip 111, application layer protocol code designs based on standard A 2DP and AVRCP, and its code downloads to flash memory under program 112.Described bluetooth master chip 111, Bluetooth audio frequency converts simulated audio signal to by CODEC or digital I2S signal is exported.
Described infrared signal emitter 103 comprises infrared signal modulation circuit 131 and infrared signal drive circuit 132.
Described signal processing apparatus 102 comprises audio adjusting circuit 121 and carrier signal treatment circuit 122.Described signal processing apparatus 102 is connected with analogue audio frequency input port 104 by analogue audio frequency coupling circuit 125.Audio adjusting circuit 121 can be taked analog audio interface or intend two kinds of interface conversion modes of output by I2S revolving die, for suppressing audio-frequency noise, can compress and suppress to process audio signal.
Described infrared signal emitter 103 by signal by infrared signal modulating circuit modulates to designated frequency band high-frequency pulse signal, for the multi-channel audio signal receiving, it is modulated to the infrared channel of different frequent points simultaneously.According to infrared channel quantity, take direct conversion to drive and two kinds of modes that pattern combines of separated driving transmitting, infrared signal drive circuit is according to infrared transmitting tube quantity design driven array, and position and transmit direction a plurality of or array infrared transmitting tube connection in series-parallel relation and infrared transmitting tube can require to design according to different product.
Described analogue audio frequency input port 104, makes audio conversion device except supporting that Bluetooth audio frequency is received to input to be converted to infrared acoustic frequency transmitting output, can also support simulated audio signal input to be converted to infrared acoustic frequency transmitting output,
Analogue audio frequency output port 115, is an add-on module, makes audio conversion device 1 can support Bluetooth audio frequency to receive and be directly converted to simulated audio signal output.
The acoustics of audio wireless transmission also comprises infrared reception sound equipment 2, infrared reception sound equipment 2 comprises housing 20, described housing 20 is provided with infrared receiving window 201 and loose sound hole 213, in described infrared receiving window 201, be provided with for receiving the infrared signal of the infrared modulated signal that infrared signal emitter sends and receive coupling device 202, described infrared signal receives on coupling device 202 and is connected with infrared signal demodulation processing device 203, described infrared signal demodulation processing device 203 is connected with loud speaker 205 by audio amplifier circuit 204, in described housing 20, be provided with control circuit board 206, on described control circuit board 206, be connected with supply unit 261, described housing 20 is provided with illumination light-transmitting window 207, in described housing 20, be provided with the lighting device 208 that light can penetrate by described illumination light-transmitting window 207, described infrared signal demodulation processing device 203, audio amplifier circuit 204, loud speaker 205, lighting device 208 is all electrically connected to described control circuit board 206.
The infrared radio sound equipment 2 with illumination functions of the present invention, can make bulb lamp shape, and described housing 20 is provided with the connector 209 for being connected with lamp holder hole.Connector 209 can be spiral or buckle-type.Can directly be installed on the bulb socket of existing standard, easy for installation.
The infrared radio sound equipment 2 with illumination functions of the present invention, also can make smallpox shot-light structure, and described housing 20 is provided with for being installed on the installation buckle 210 of smallpox shot-light position.By installation buckle, be directly installed on sky and take, easy for installation.
The infrared radio sound equipment 2 with illumination functions of the present invention, can also make standard 86 type combined socket and switch structures, and described housing 20 is provided with for being installed on the mount pad 211 in switch on wall base, is directly installed on the position of wall socket.
Between described infrared signal demodulation processing device 203 and described audio amplifier circuit 204, be provided with track selecting device 212.Can be set to L channel or R channel or left and right acoustic channels mixing sound by sound equipment.
Described infrared signal receives all integrated being arranged on described control circuit board 206 of coupling device 202, infrared signal demodulation processing device 203, audio amplifier circuit 204.Volume is little, and cost is low.
Described supply unit 261 comprises that rectification is input to the LED light power 26B of LED bulb and is input to for supplying with the infrared power supply 26A that described infrared signal receives coupling device 202 and infrared signal demodulation processing device 203 for supplying with.LED light power carries out AC-DC conversion and adjusts voltage to the required amplitude of LED bulb.Infrared power supply 26A is to power level and stability is carried out further voltage stabilizing and voltage transitions adjustment is processed.
Infrared signal receives coupling device 202 by a plurality of or array high sensitivity infrared receiving tube and reception coupling circuit, infrared signal is converted to electric impulse signal, and a plurality of or array infrared receiving tube position and direction and coupled modes require in design different for different product.Infrared signal demodulation processing device 203 comprises the circuit units such as demodulation separation to infrared signal, noise suppressed, audio frequency output.For the multi-channel audio signal receiving, infrared signal demodulation processing device carries out separation by multipath audio signal.
Described lighting device 208 comprises lighting control circuit 281 and LED lighting fixture 282.Lighting control circuit comprises a multiway analog switch, to control headlamp switch and brightness regulation.
Can in the same space, arrange any number of, each sound equipment can hardware setting or operative configuration to the sound channel of appointment.Do not changing on the basis of existing finishing environment, applying the wireless audio frequency transmission function that this device is realized " broadcast type " one-to-many.
Source of sound playing device of the present invention can be used any existing support stereosonic blue tooth to play main side product, as the audio player with Bluetooth transmission device such as smart mobile phone, notebook computer.
Audio conversion device of the present invention is converted to infrared audio signal by the Bluetooth signal of reception, again infrared audio signal is launched with broadcast type, by many infrared reception sound equipments, carry out ANTENN AUDIO reception, different acoustic device receives and plays by the sound of channel selecting appointment, and the lighting device of infrared reception sound equipment part can arrange as required or not arrange.
" distributed " of the present invention sound system can be comprised of any number of sound equipment receiving terminals, each sound equipment receiving terminal can hardware setting or operative configuration to the sound channel of appointment.Do not changing on the basis of existing finishing environment, application the method realizes the wireless audio frequency transmission function of " broadcast type " one-to-many.
Operation principle of the present invention:
Utilize sound source 301 audio plays in existing source of sound playing device 3.By the Bluetooth signal receiving system 101 in Bluetooth signal emitter 302 main sides, transmitting terminal and audio conversion device in source of sound playing device 3, from end, receiving terminal, set up linking bluetooth, and carry out Bluetooth audio frequency transmission based on standard bluetooth voice applications agreement, through the decoding of receiving terminal bluetooth, obtain digital audio stream, then comprise that by the audio frequency processing circuit being integrated in bluetooth master chip CODEC and DA are converted to numeral and export with simulated audio signal.
For the above-mentioned numeral through Bluetooth signal receiving system or simulated audio signal output, the signal processing apparatus in apparatus of the present invention is coupled it respectively, changes, and forms multi-channel audio signal.Then the infrared signal modulation circuit in infrared signal emitter 131 carries out high frequency modulated conversion and mixing output, then passes through the processing of infrared signal drive circuit 132, drives infrared transmitting tube array transmitting infrared audio signal.
Source of sound playing device can be used any with Bluetooth function and support Bluetooth stereo transmission must support the Bluetooth music playing devices such as smart mobile phone, flat board and removable computer of A2DPD consensus standard.
Source of sound playing device also can be directly inputted to audio signal on the analogue audio frequency input interface of audio conversion device of the present invention with wireline audio line, when this situation, simulated audio signal is directly inputted to the signal processing apparatus in apparatus of the present invention, and the operation principle that its rear end signal is processed, infrared signal is launched is with aforementioned identical.
Common wired sound equipment receiving system with analogue audio frequency input interface also can be directly connected on the analogue audio frequency output interface of audio conversion device of the present invention.
Claims (8)
1. an audio transmission conversion method, it is characterized in that: utilize Bluetooth signal receiving system application standard Bluetooth audio frequency transmission application layer protocol that Bluetooth audio frequency is received, then by signal processing apparatus, Bluetooth signal is converted to infrared acoustic frequency modulation signal, finally by infrared signal emitter, infrared acoustic frequency modulation signal is launched.
2. an audio transmission conversion equipment, for the Bluetooth signal receiving is converted to infrared signal, it is characterized in that: comprise shell (10), in described shell (10), be provided with for receiving the Bluetooth signal receiving system (101) of the Bluetooth signal that Bluetooth signal emitter sends, on described Bluetooth signal receiving system (101), be connected with the signal processing apparatus (102) that Bluetooth signal is converted to infrared modulated signal, on described signal processing apparatus (102), be connected with for launching the infrared signal emitter (103) of infrared modulated signal, in described shell (10), be provided with the first supply unit (109) that provides power supply for described Bluetooth signal receiving system (101) and described signal processing apparatus (102) and described infrared signal emitter (103).
3. audio transmission conversion equipment according to claim 2, it is characterized in that: described the first supply unit (109) comprises the prime power module (191) exchanging with direct current conversion, on described prime power module (191), be connected with according to described Bluetooth signal receiving system (101) and require to carry out the bluetooth power module (192) that voltage stabilizing and voltage adjustment process and the infrared power module (193) that requires to carry out voltage stabilizing and voltage adjustment processing according to described infrared signal emitter (103).
4. audio transmission conversion equipment according to claim 2, is characterized in that: described Bluetooth signal receiving system (101) comprises bluetooth master chip (111), flash memory under program (112), antenna and radio frequency matching circuit (113), audio output interface (114).
5. audio transmission conversion equipment according to claim 2, is characterized in that: described infrared signal emitter (103) comprises infrared signal modulation circuit (131) and infrared signal drive circuit (132).
6. audio transmission conversion equipment according to claim 2, is characterized in that: described signal processing apparatus (102) comprises audio adjusting circuit (121) and carrier signal treatment circuit (122).
7. audio transmission conversion equipment according to claim 2, is characterized in that: on described Bluetooth signal receiving system (101), be connected with analogue audio frequency output port (115).
8. audio transmission conversion equipment according to claim 2, is characterized in that: described signal processing apparatus (102) is connected with analogue audio frequency input port (104) by audio coupling circuit (125).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310673963.3A CN103684589A (en) | 2013-12-11 | 2013-12-11 | Audio transmission conversion method and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310673963.3A CN103684589A (en) | 2013-12-11 | 2013-12-11 | Audio transmission conversion method and device |
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| CN103684589A true CN103684589A (en) | 2014-03-26 |
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| CN201310673963.3A Pending CN103684589A (en) | 2013-12-11 | 2013-12-11 | Audio transmission conversion method and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108683455A (en) * | 2018-07-06 | 2018-10-19 | 黑龙江大学 | Infrared output device is debugged in MCVF multichannel voice frequency in indoor LED illuminating lamp |
| CN111022948A (en) * | 2019-12-31 | 2020-04-17 | 黑龙江大学 | Household networked LED combined lighting lamp |
| CN111417040A (en) * | 2020-02-28 | 2020-07-14 | 广州市天历德电子科技有限公司 | Infrared microphone and signal transmission method thereof |
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Application publication date: 20140326 |