CN105812986A - Sound box and processing method for mixing multiple channels to two wireless channels - Google Patents

Sound box and processing method for mixing multiple channels to two wireless channels Download PDF

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Publication number
CN105812986A
CN105812986A CN201610305091.9A CN201610305091A CN105812986A CN 105812986 A CN105812986 A CN 105812986A CN 201610305091 A CN201610305091 A CN 201610305091A CN 105812986 A CN105812986 A CN 105812986A
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CN
China
Prior art keywords
channel
audio signal
audio
multichannel
wireless
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CN201610305091.9A
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Chinese (zh)
Inventor
符诗华
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Guangzhou Aokai Electronics Co Ltd
OCVACO ELECTRONIC Ltd
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Guangzhou Aokai Electronics Co Ltd
OCVACO ELECTRONIC Ltd
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Application filed by Guangzhou Aokai Electronics Co Ltd, OCVACO ELECTRONIC Ltd filed Critical Guangzhou Aokai Electronics Co Ltd
Priority to CN201610305091.9A priority Critical patent/CN105812986A/en
Publication of CN105812986A publication Critical patent/CN105812986A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00Signal processing covered by H04R, not provided for in its groups

Abstract

The invention discloses a sound box for mixing multiple channels to two wireless channels. The sound box comprises a sound processing host, a left sound box and a right sound box. The sound box is characterized by further comprising a multi-channel-to-two-channel unit and audio output units, wherein the multi-channel-to-two-channel unit is arranged in the audio processing host, and the audio output units are both arranged in the left sound box and the right sound box; the multi-channel-to-two-channel unit is used for converting audio signals of more than two channels into two-channel audio signals and sending to the two-channel audio output units through a wireless mode; and the audio output units are used for processing and amplifying the received two-channel audio signals and outputting to a loudspeaker of the left sound box and a loudspeaker of the right sound box. By utilizing the existing two-channel sound box, the multi-channel stereophonic effect is realized, and the sound box can be compatible with the previous wired two-channel system, the wiring is simplified, the space is saved and the cost is low.

Description

Multichannel contracting is blended together audio amplifier and the processing method of wireless two sound channels
[technical field]
The present invention relates to field of audio, be specifically related to realize with 2.0 sound channel systems audio amplifier and the method for multichannel effect.
[background technology]
Along with the development of society and microelectric technique, the living standard of people is more and more higher, and various smart machines get more and more.Mobile phone, flat board, large-size screen monitors TV has been enter into huge numbers of families.The resources of movie & TV that LED large-size screen monitors TV connects net online is very abundant, and network has the film assets of all kinds of multichannel, and therefore people's requirement to stereo set or with the flat panel TV Play System of acoustic function is more and more higher.Small-sized 2.0 or 2.1 ambiophonic systems of current flat panel TV, including subwoofer main frame, left voice box, right voice box and woofer, left voice box, right voice box and woofer are host machine wired with subwoofer respectively to be connected, such as Fig. 1.Although 2.0 or 2.1 can meet the demand of user to a certain extent around sound equipment, but 2.0 channel stereo or the virtual surround sound that grows up on 2.1 sound channel bases and multichannel around sound equipment (as: 5.1 or 6.1 and 7.1 multichannels of DTS or Doby track surround sound equipment) compare, its effect does not reach far away the multichannel effect around sound equipment.
Existing multi-channel decoding surrounds sound system, such as Fig. 2, such as 5.1 sound channels (include left front putting audio amplifier, right preposition audio amplifier, center-channel speaker, left surround speaker, right surround audio amplifier and woofer) in sound equipment, generally decoding power amplifier main frame is placed on front, decoding power amplifier main frame is connected with audio amplifier simultaneously, 3 groups of audio amplifiers in decoding power amplifier main frame and front are (left, in, right) all pass through wired connection, left, right surround audio amplifier is placed in main amplifier back upper place, woofer is bigger due to volume, as adopted wired connection, it is put and connects up and just seems relatively difficult.Although multichannel surrounds sound equipment, powerful surrounding effect can be realized such as 5.1 around sound equipment.But, its cost is high, it is loaded down with trivial details to install, and takes up room big, it has not been convenient to mobile.
[summary of the invention]
In view of this, the present invention provides one to utilize two track loudspeaker boxes, can realize the audio effect of multichannel.
The present invention adopts the following technical scheme that, construct the audio amplifier that multichannel contracting is blended together wireless two sound channels, including audio effect processing main frame, left voice box, right voice box, multichannel turns two sound channel unit and audio output units, it is provided with multichannel in audio effect processing main frame and turns two sound channel unit, left voice box and be equipped with audio output unit in right voice box;Multichannel turns two sound channel unit, for audio signals more than two sound channels converts to two channel audio signal, and is wirelessly sent to two channel audio output units;Audio output unit, exports to the speaker of left voice box and right voice box for exporting after being undertaken two channel audio signal received processing and to amplify.
Preferably, described multichannel turns two sound channel unit, including the first main control module and the first wireless sending module;
First main control module, then the source code audio signal decoding for receiving is processed into two channel digital audio signal after becoming corresponding multichannel digital audio signal, exports again through wireless mode;
First wireless sending module, for wirelessly exporting two channel digital audio signal to described audio output unit.
Preferably, described multichannel turns two sound channel unit, also includes the first dio Output Modules;
First dio Output Modules, is exported by 3.5mm earphone circuit after converting two channel digital audio signal from the first main control module to simulated audio signal, and its input connects the first main control module, and its outfan connects the output of 3.5mm earphone circuit.
Preferably, described audio output unit, including the second wireless receiving module, the second main control module, the second dio Output Modules;
Second wireless receiving module, receives and exports to the second main control module after two channel digital audio signal of the first wireless communication module;
Second main control module, after two channel digital audio signal are carried out audio effect processing, reconvert becomes two channel analog audio signals, is then output to the second dio Output Modules;
Second dio Output Modules;For being exported by speaker after two channel analog audio signals are amplified filtering, its input connects the second main control module, and its outfan connects the speaker in left voice box/right voice box.
The present invention also provides for a kind of utilizing above-mentioned audio amplifier that multichannel contracting is blended together the processing method of wireless two sound channels, and it comprises the steps:
S1: source code audio signal is input to the first main control module and is decoded into the standard multichannel digital audio signal of correspondence;
Multichannel digital audio signal is processed into two channel digital audio signal by the S2: the first main control module;
S3: two channel digital audio signal wirelessly export to audio output unit.
Preferably, it also includes,
S4: two channel digital audio signal are converted to the step of output after analogue signal is amplified again by audio output unit.
The method have the benefit that: utilize existing two track loudspeaker boxes to achieve the surrounding sound effect of multichannel, and can compatible before wired two sound channel systems, simplify wiring, save space, cost is low.
[accompanying drawing explanation]
Figure 12 .1 track loudspeaker box composition frame chart;
Figure 25 .1 track loudspeaker box composition frame chart;
The audio amplifier hardware composition frame chart that multichannel contracting is blended together wireless two sound channels in Fig. 3 embodiment one;
The circuit theory diagrams of the D/A change-over circuit in Fig. 4 embodiment one;
The circuit theory diagrams of the first amplifying circuit in Fig. 5 embodiment one;
The circuit theory diagrams of the first charge management circuit in Fig. 6 embodiment one;
The circuit theory diagrams of the first mu balanced circuit in Fig. 7 embodiment one;
The circuit theory diagrams of the second dio Output Modules in Fig. 8 embodiment one;
The circuit theory diagrams of the second charge management circuit in Fig. 9 embodiment one;
The circuit theory diagrams of the second mu balanced circuit in Figure 10 embodiment one.
[detailed description of the invention]
In order to make the technical scheme of this patent and technique effect clearly, below in conjunction with drawings and Examples, specific implementation of the patent mode is described in detail.
Embodiment one:
Such as Fig. 3, the audio amplifier that multichannel contracting is blended together wireless two sound channels in the present embodiment, including audio effect processing main frame, left voice box, right voice box, multichannel turns two sound channel unit, it is provided with multichannel in audio effect processing main frame and turns two sound channel unit, left voice box and be equipped with audio output unit in right voice box.Multichannel turns two sound channel unit, for converting channel audio signal more than two sound channels to two channel audio signal, and is wirelessly sent to audio output unit.Wireless sound box unit exports to the speaker in left voice box and right voice box for exporting after being undertaken two channel audio signal received processing and to amplify.
Multichannel turns two sound channel unit, including the first main control module, the first wireless sending module, the first wireless receiving module, the first dio Output Modules, the first power module and the first memory module.
First main control module, then the source code audio signal decoding for receiving is processed into two channel digital audio signal after becoming corresponding multichannel digital audio signal, again through wired and/or wireless mode output.Two channel digital audio signal can be 2.0 channel audio signal or 2.1 channel audio signal.The first main control module in the present embodiment adopts section of state microelectronics model to be the integrated circuit of GK1107, the connected interface for receiving source code audio signal has COXA (coaxial signal input interface, for receiving the audio signal of the audiogenic device such as DVD output), OPT (fiber-optic signal input interface, for receive with optical fiber output interface device output audio signal), AUX (analogue audio frequency input interface, for receiving the simulated audio signal of various equipment) etc. interface, in order to the source code audio signal of various equipment can be received.When the first main control module receive be DTS5.1/ Doby 5.1/PCM5.1 source code audio signal time, then be decoded into 5.1 channel digital signal, then reprocess into 2.0 sound channels or 2.1 channel digital audio signal;What receive such as the first main control module is DTS6.1/ Doby 6.1/PCM6.1 source code audio signal, then be decoded into 6.1 channel digital signal, then reprocess into 2.0 sound channels or 2.1 channel digital audio signal.
First wireless sending module, for wirelessly exporting two channel digital audio signal to audio output unit, its input connects the first main control module.The first wireless sending module in the present embodiment adopts Shanghai billows to play the WIFI module that model is MWI042A.
First wireless receiving module, for receiving the wireless audio signal from other equipment, and exports to the first main control module;The wireless audio signal of the smart machines such as the present invention executes the WIFI module adopting sea billows model to be MWI042A in example and receives mobile phone freely, IPAD.The combination of the first wireless receiving module and the first main control module is suitable for wired and wireless signal input, improves the compatibility of this sound box system.
First dio Output Modules, is exported by 3.5mm earphone circuit after converting two channel digital audio signal to simulated audio signal, and its input connects the first main control module, and its outfan connects the output of 3.5mm earphone circuit;First dio Output Modules includes a D/A change-over circuit and the first amplifying circuit.Oneth D/A change-over circuit is for exporting to the first amplifying circuit, the typical application circuit that its schematic diagram such as Fig. 4 adopts model to be CS4334/NC after converting two channel digital audio signal to simulated audio signal.First amplifying circuit exports after being amplified by simulated audio signal and exports to 3.5mm earphone circuit, and the typical application circuit that its schematic diagram such as Fig. 5 adopts model to be MAX97220B, its outfan can be RCA interface or 3.5mm earphone interface.So as 2.0 or 2.1 compatible traditional wired sound systems so that audio effect processing main frame can connect with left voice box, right voice box.
First power module, becomes the voltage required for other modules for the voltage transformation to the Charge Management of rechargeable battery and by rechargeable battery output, and its voltage output end connects the supply pin of other modules.First power module includes the first charging power management circuits and the first mu balanced circuit.First charge management circuit is for the Charge Management of battery, and such as Fig. 6, adopting model is the typical application circuit of CG4056, and CG4056 has anti-overvoltage, crosses the functions such as stream.First mu balanced circuit circuit theory diagrams such as Fig. 7, cell output voltage exports 5V voltage through BL9240 voltage stabilizing, and 5V voltage becomes 3.3V voltage then through BL9309 voltage stabilizing, and 3.3V voltage becomes 1.2V voltage then through BL8026 voltage stabilizing.
First memory module, processes the various middle voice data in audio signal process for storing the first main control module, and it is connected with the first main control module, it is possible to choose RAM and/or ROM of the prior art and/or Flash.
Audio output unit, including the second wireless receiving module, the second main control module, the second dio Output Modules, second source module and the second memory module.
Second wireless receiving module, receives and exports to the second main control module after two channel digital audio signal of the first wireless sending module, and its outfan connects the second main control module.It adopts and the integration module of the first wireless receiving module same model.
Second main control module, after two channel digital audio signal are carried out audio effect processing, reconvert becomes two channel analog audio signals, is then output to the second dio Output Modules.The second main control module in the present embodiment adopts model to be the integrated circuit of NPCA110B.
Second dio Output Modules, for being exported by speaker after two channel analog audio signals are amplified filtering, its input connects the second main control module, and its outfan connects the speaker in left voice box/right voice box.Second dio Output Modules includes the second amplifying circuit and filter circuit.Second amplifying circuit is for exporting to filter circuit by simulating after two channel audio signal are amplified, and its input connects the second main control module, and its outfan connects filter circuit;Fig. 8 is the schematic diagram of the second dio Output Modules, and CSC3110 completes signal amplifying function, and C1 and R5 completes low frequency filtering, and TW connects loudspeaker, and L3 completes High frequency filter, and SW connects bass horn.
Second source module, becomes the voltage required for other modules for the voltage transformation to the Charge Management of rechargeable battery and by rechargeable battery output, and its voltage output end connects the supply pin of other modules.And power module includes the second charge management circuit and the second mu balanced circuit.Second charge management circuit is for the Charge Management of battery, and such as Fig. 9, adopting model is the typical application circuit of LM3481.Second mu balanced circuit circuit theory diagrams such as Figure 10, cell output voltage exports 3.3V voltage through AOZ1284 voltage stabilizing.
Second memory module, processes the various middle voice data in audio signal process for storing the second main control module, and it is connected with the first main control module, it is possible to choose RAM and/or ROM of the prior art and/or Flash.
The operation principle of the audio amplifier that the multichannel contracting in the present embodiment blendes together wireless two sound channels is as follows:
S1: source code audio signal is input to the first main control module and is decoded into the standard multichannel digital audio signal of correspondence;
Multichannel digital audio signal is processed into digital audio and video signals by the S2: the first main control module;
S3: two channel digital audio signal wirelessly export to audio output unit;
S4: two channel digital audio signal are converted to and export after analogue signal is amplified again by audio output unit.
For 6.1 sound channels, its work process is described below
Use signal distribution and the contracting of virtual principle to blend together 2..0 sound channel through decoded 6.1 sound channel signals, then pass through wireless audio frequency transmission function technology, existing multichannel audio 6.1 multichannel result of broadcast around sound equipment can be reached.
The center channels signal decoded out is fictionalized a center channels according to 2 road stereo sound image localization methods.
By the left side decoded out center channels after signal and right surround signal position according to 2 road stereo sound images.
A left side is fictionalized respectively around sound channel and a right surround sound according to acoustic image extended method.
Audio amplifier bass process aspect, exports virtual bass by MaxxBass algorithm after DSP processes, and MaxxBass virtual bass Processing Algorithm is advanced a kind of psycho-acoustic bass extension technology, is used for solving in loudspeaker design stubborn problem the most;Do not have big speaker and power amplifier cannot reproduce of a sufficiently low bass frequencies.MaxxBass virtual bass Processing Algorithm is to make use of the fundamental frequency Loss being proven to make audience can hear the bass of maximum 1.5 octaves below speaker physical restriction.It does not violate physics law, has simply used the psychological illusion being equal to actual sound to make it sound like.The low frequency reproduction effect that method of thus planting produces is penetrating and unambiguous, plentiful and not thin.And the requirement of speaker size, tank-volumes and horn material is greatly lowered, only need more small-bore loudspeaker unit just can hear bass more overcast, more glamour.It is that two audio amplifiers that can allow of this present invention send the distinctive technical finesse of all-bottom sound, makes a two audio amplifier bass increase sound field effect;Better empty like the sound field effect of bass.
The foregoing is only the preferred embodiment of this patent, be not limited to this patent, for a person skilled in the art, this patent can have various modifications and variations.Within all spirit at this patent and principle, any amendment of making, equivalent replacement, improvement etc., should be included within the protection domain of this patent.

Claims (6)

1. multichannel contracting is blended together the audio amplifier of wireless two sound channels, including audio effect processing main frame, left voice box, right voice box, it is characterized in that: it also includes multichannel and turns two sound channel unit and audio output units, it is provided with multichannel in audio effect processing main frame and turns two sound channel unit, left voice box and be equipped with audio output unit in right voice box;Multichannel turns two sound channel unit, for audio signals more than two sound channels converts to two channel audio signal, and is wirelessly sent to two channel audio output units;Audio output unit, exports to the speaker of left voice box and right voice box for exporting after being undertaken two channel audio signal received processing and to amplify.
2. the audio amplifier that multichannel contracting is blended together wireless two sound channels as claimed in claim 1, it is characterised in that: described multichannel turns two sound channel unit, including the first main control module and the first wireless sending module;
First main control module, then the source code audio signal decoding for receiving is processed into two channel digital audio signal after becoming corresponding multichannel digital audio signal, exports again through wireless mode;
First wireless sending module, for wirelessly exporting two channel digital audio signal to described audio output unit.
3. the audio amplifier that multichannel contracting is blended together wireless two sound channels as described in 1 or 2 is wanted such as right, it is characterised in that: described multichannel turns two sound channel unit, also includes the first dio Output Modules;
First dio Output Modules, is exported by 3.5mm earphone circuit after converting two channel digital audio signal from the first main control module to simulated audio signal, and its input connects the first main control module, and its outfan connects 3.5mm earphone circuit outfan.
4. the audio amplifier that multichannel contracting is blended together wireless two sound channels as described in as arbitrary in claims 1 to 3, it is characterised in that: described audio output unit, including the second wireless receiving module, the second main control module, the second dio Output Modules;
Second wireless receiving module, receives and exports to the second main control module after two channel digital audio signal of the first wireless communication module;
Second main control module, after two channel digital audio signal are carried out audio effect processing, reconvert becomes two channel analog audio signals, is then output to the second dio Output Modules;
Second dio Output Modules;For being exported by speaker after two channel analog audio signals are amplified filtering, its input connects the second main control module, and its outfan connects the speaker in left voice box/right voice box.
5. utilize the audio amplifier in claim 1 that multichannel contracting blendes together the processing method of wireless two sound channels, it is characterised in that: it comprises the steps:
S1: source code audio signal is input to the first main control module and is decoded into the standard multichannel digital audio signal of correspondence;
Multichannel digital audio signal is processed into two channel digital audio signal by the S2: the first main control module;
S3: two channel digital audio signal wirelessly export to audio output unit.
6. multichannel contracting is blended together the processing method of wireless two sound channels by the audio amplifier in claim 1 as claimed in claim 5, it is characterised in that: it also includes,
S4: two channel digital audio signal are converted to the step of output after analogue signal is amplified again by audio output unit.
CN201610305091.9A 2016-05-09 2016-05-09 Sound box and processing method for mixing multiple channels to two wireless channels Pending CN105812986A (en)

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Application publication date: 20160727