CN205622834U - With multichannel audio amplifier of two wireless sound channels of blending together that contracts - Google Patents
With multichannel audio amplifier of two wireless sound channels of blending together that contracts Download PDFInfo
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- CN205622834U CN205622834U CN201620415807.6U CN201620415807U CN205622834U CN 205622834 U CN205622834 U CN 205622834U CN 201620415807 U CN201620415807 U CN 201620415807U CN 205622834 U CN205622834 U CN 205622834U
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Abstract
The utility model discloses a with multichannel audio amplifier of two wireless sound channels of blending together that contracts, sound effect processing host computer, left audio amplifier, right audio amplifier, its characterized in that: it includes still that the multichannel changes two sound channel unit and audio output unit, and it changes two sound channel units to be equipped with the multichannel in the sound effect processing host computer, all is equipped with audio output unit in left audio amplifier and the right audio amplifier, the multichannel changes two sound channel units for convert the audio signal more than two sound channels to two sound channel audio signal, and give two sound channel audio output unit through wirelessly transmitting, audio output unit for handle two sound channel audio signal of received and enlarge the speaker output of back output for left audio amplifier and right audio amplifier. Utilize two existing sound channel mailboxes to realize the stereo effect of multichannel, and can compatiblely simplify the wiring with traditional wired two sound channel systems, practice thrift the space, it is with low costs.
Description
[technical field]
This utility model relates to field of audio, is specifically related to realize the audio amplifier of multichannel effect with 2.0 sound channel systems.
[background technology]
Along with society and the development of 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 the abundantest, 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 flat panel TV at present, 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 grown up on the basis of 2.1 sound channels are compared around sound equipment (such as: DTS or the 5.1 of Doby track or 6.1 and 7.1 multichannels are around sound equipment) with multichannel, and its effect does not reaches far away the multichannel effect around sound equipment.
Existing multi-channel decoding is around 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, typically 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 used wired connection, it is put and connects up and just seems relatively difficult.Although multichannel is around 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.
[utility model content]
In view of this, this utility model provides one to utilize two track loudspeaker boxes, can realize the audio effect of multichannel.
This utility model 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, in left voice box and right voice box, be equipped with audio output unit；Multichannel turns two sound channel unit, for audio signals more than two sound channels is converted into two channel audio signal, and is wirelessly sent to two channel audio output units；Audio output unit, exports after two channel audio signal received are processed and amplified and exports to the loudspeaker of left voice box and right voice box.
Preferably, described multichannel turns two sound channel unit, including the first main control module and the first wireless sending module；
First main control module, after the source code audio signal decoding for receiving becomes corresponding multichannel digital audio signal, is then processed into two channel digital audio signal, more wirelessly exports；
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 standard circuit after two channel digital audio signal from the first main control module are converted into simulated audio signal, and its input connects the first main control module, and its outfan connects 3.5mm standard circuit outfan.
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；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.
This utility model 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,
Two channel digital audio signal are converted into the step of output after analogue signal is amplified again by S4: audio output unit.
Advantageous Effects of the present utility model is: utilize existing two sound channel mailbox to achieve the stereophonic effect of multichannel, and can compatible before wired two sound channel systems, simplify wiring, save space, low cost.
[accompanying drawing explanation]
Fig. 1 2.1 track loudspeaker box composition frame chart；
Fig. 2 5.1 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]
Technical scheme and technique effect in order to make this patent are clearer, are described in detail specific implementation of the patent mode with embodiment below in conjunction with the accompanying drawings.
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, it is provided with multichannel in audio effect processing main frame and turns two sound channel processing units, be equipped with power amplifier in left voice box and right voice box and push directly on speaker.Multichannel turns two sound channel unit, for audio signals more than two sound channels is converted into two channel audio signal, and is wirelessly sent to audio output unit.Audio amplifier receives wireless audio signal and exports after receive two channel audio signal are processed and amplified to the loudspeaker output in left voice box and right voice box.
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, after the source code audio signal decoding for receiving becomes corresponding multichannel digital audio signal, is then processed into two channel digital audio signal, then is exported by wired and/or wireless mode.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 uses 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 form) etc. interface, in order to the source code audio signal of various form 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；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 receiving module in the present embodiment uses 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 present embodiment uses the wireless audio signal of the smart machines such as Shanghai billows play the WIFI module receiver module that model is MWI042A, and reception carrys out 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 earphone after two channel digital audio signal are converted into simulated audio signal, and its input connects the first main control module, and its outfan connects the output of 3.5mm earphone；First dio Output Modules includes a D/A change-over circuit and the first amplifying circuit.Oneth D/A change-over circuit exports to the first amplifying circuit, the typical application circuit that its schematic diagram such as Fig. 4 uses model to be CS4334/NC after two channel digital audio signal are converted into simulated audio signal.First amplifying circuit exports after being amplified by simulated audio signal and exports to 3.5mm earphone route, and the typical application circuit that its schematic diagram such as Fig. 5 uses model to be MAX97220B, its outfan can be RCA interface or 3.5mm earphone.So as compatible 2.0 or 2.1 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 charge management circuit and the first mu balanced circuit.First charge management circuit is for the Charge Management of battery, and such as Fig. 6, using 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, 3.3V voltage to become 1.2V voltage through BL8026 voltage stabilizing again through BL9309 voltage stabilizing again.
First memory module, the various middle voice data during storage the first main control module processes audio signal, it is connected with the first main control module, can 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 uses 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 uses model to be the integrated circuit of NPCA110B.
Second dio Output Modules, is exported by speaker after two channel analog audio signals are amplified filtering, and 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, 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.Second source 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, using 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, the various middle voice data during storage the second main control module processes audio signal, it is connected with the first main control module, can 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；
Two channel digital audio signal are converted into after analogue signal is amplified again and export by S4: audio output unit.
Its work process is described below as a example by 6.1 sound channels.
Use signal distribution and the contracting of virtual principle to blend together 2..0 sound channel through decoded 6.1 sound channel signals, then by wireless audio frequency transmission function technology, existing multichannel audio 6.1 multichannel result of broadcast around sound equipment can be reached.
Decoding center channels signal out is fictionalized a center channels according to 2 road stereo sound image localization methods.
By decoding left center channels after signal and right surround signal position according to 2 road stereo sound images out.
A left cincture sound channel and a right surround sound is fictionalized respectively according to acoustic image extended method.
Audio amplifier bass process aspect, exports virtual bass by Maxx Bass algorithm after DSP processes, and Maxx Bass 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.Maxx Bass virtual bass Processing Algorithm is to make use of the fundamental frequency Loss being proven to make audience can hear the bass of most 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 the thinest.And the requirement to 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 this distinctive technical finesse that two audio amplifiers can be allowed to send all-bottom sound of the present utility model, makes a two audio amplifier bass increase sound field effect；The most 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 modification, equivalent substitution and improvement etc. made, within should be included in the protection domain of this patent.
Claims (4)
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 that 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, in left voice box and right voice box, be equipped with audio output unit；Multichannel turns two sound channel unit, for audio signals more than two sound channels is converted into two channel audio signal, and is wirelessly sent to two channel audio output units；Audio output unit, exports after two channel audio signal received are processed and amplified and exports to the loudspeaker of left voice box and right voice box.
2. as claimed in claim 1 multichannel contracting is blended together the audio amplifier of wireless two sound channels, 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, after the source code audio signal decoding for receiving becomes corresponding multichannel digital audio signal, is then processed into two channel digital audio signal, more wirelessly exports；
First wireless sending module, for wirelessly exporting two channel digital audio signal to described audio output unit.
3. as claimed in claim 1 or 2 multichannel contracting is blended together the audio amplifier of wireless two sound channels, 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 circuit after two channel digital audio signal from the first main control module are converted into simulated audio signal, and its input connects the first main control module, and its outfan connects the output of 3.5mm circuit.
4. the audio amplifier that multichannel contracting is blended together wireless two sound channels as described in claims 1 to 3 is arbitrary, 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；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.
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| CN201620415807.6U CN205622834U (en) | 2016-05-09 | 2016-05-09 | With multichannel audio amplifier of two wireless sound channels of blending together that contracts |
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| CN201620415807.6U CN205622834U (en) | 2016-05-09 | 2016-05-09 | With multichannel audio amplifier of two wireless sound channels of blending together that contracts |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812986A (en) * | 2016-05-09 | 2016-07-27 | 中山奥凯华泰电子有限公司 | Sound box and processing method for mixing multiple channels to two wireless channels |
| CN113674519A (en) * | 2020-05-14 | 2021-11-19 | 许祐豪 | Loudspeaker sound channel audio control system |
-
2016
- 2016-05-09 CN CN201620415807.6U patent/CN205622834U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812986A (en) * | 2016-05-09 | 2016-07-27 | 中山奥凯华泰电子有限公司 | Sound box and processing method for mixing multiple channels to two wireless channels |
| CN113674519A (en) * | 2020-05-14 | 2021-11-19 | 许祐豪 | Loudspeaker sound channel audio control system |
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