CN201328181Y - Multi-sound channel digital sound field wireless earphone device - Google Patents
Multi-sound channel digital sound field wireless earphone device Download PDFInfo
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- CN201328181Y CN201328181Y CNU2008201341145U CN200820134114U CN201328181Y CN 201328181 Y CN201328181 Y CN 201328181Y CN U2008201341145 U CNU2008201341145 U CN U2008201341145U CN 200820134114 U CN200820134114 U CN 200820134114U CN 201328181 Y CN201328181 Y CN 201328181Y
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Abstract
一种能够克服无线传送讯号有效范围的地形地物限制和对于传输的内容具有较高的噪声忍受比的多声道无线耳机装置。此多声道无线耳机装置包括讯号处理及发送装置以及无线耳机。讯号处理及发送装置用于处理多声道数字音效解码，并产生多组数字音源讯号，并藉由无线通信同时将所述数字音源讯号传送至多声道无线耳机。无线耳机利用无线通信直接接收所述数字音源讯号，并经由数字模拟转换与放大后，经由无线耳机的多个喇叭产生多声道音场。
A multi-channel wireless headset device that can overcome the terrain limitations of the effective range of wireless transmission signals and has a higher noise tolerance ratio for the transmitted content. The multi-channel wireless headset device includes a signal processing and transmitting device and a wireless headset. The signal processing and transmitting device is used to process multi-channel digital audio decoding and generate multiple sets of digital audio source signals, and simultaneously transmit the digital audio source signals to the multi-channel wireless headset through wireless communication. The wireless headset directly receives the digital audio source signal through wireless communication, and after digital-to-analog conversion and amplification, a multi-channel sound field is generated through multiple speakers of the wireless headset.
Description
Technical field
The utility model relates to a kind of multi-track radio Headphone device, particularly relates to a kind of wireless earphone device with solid or the automatic detection of multichannel audio and handoff functionality.
Background technology
Along with the progress of numeral science and technology, people's life ﹠ amusement also tends to digitlization gradually.For instance, digital image and sound optical disk (Digital Versatile Disc generally abbreviates DVD as) player has been image player common in the general family.And because DVD player has had Dolby Digital (Dolby Digital) or Digital Theater System (Digital Theater System basically, generally abbreviate DTS as) decoding function, therefore can decode to digital signal, and the output analog signal makes 5.1 sound channel horn system sounding to the multichannel enlarger.
If will have the digital audio-video entertainment life of higher quality, multichannel enlarger and loudspeaker are indispensable outfits, and the loudspeaker of 5.1 sound channels are most basic multichannel loudspeaker.
The family's theater that generally has 5.1 sound channel enlargers and loudspeaker is when the DVD player broadcast is audio-visual, enlarger can be respectively amplifies left horn and the right horn and the supper bass loudspeaker (Sub Woofer) of the left horn that export preposition main sound channel to and right horn, center channel (Center) loudspeaker, surround channel (Surround or Rear) with different sound signals, make it produce 3 D space sound effect, the sense of reality of making us being personally on the scene.
Yet, under the situation that is not suitable for utilizing loudspeaker to play sound (doing things), just must use earphone to listen to if for example can hamper other people.If but use earphone, and then because must be connected transmission signal with circuit, therefore the action of listening the hearer will be restricted with main frame, can't be free movable.
The U.S. the 6th, 614, No. 912 and the 6th, 928, No. 179 patents all relate to a kind of infrared wireless-earphone, its principle be the multichannel audio is processed into through signal earlier about two sound channel signals, pass to earphone with wireless mode again, represent the virtual multiple sound channel audio by the two-loudspeaker earphone in the earphone.But virtual audio that such framework produces and fict multichannel effect.In addition, the transmission range of infrared and radio technology is very short, also can't penetrate barrier, often limits the scope of user's transmission.
No. 2006/0287745 patent disclosure case of the U.S. also is to propose a kind of wireless sound system that utilizes infrared transmission.The wireless sound system of this proposition mainly is the selection that is used in multiple source of sound, and after being decoded by the signal that receives, produces the audio of this multichannel.But this earphone must possess the decoder of multiple source of sound, and structure is quite complicated, and the signal that receives handles the problem that also need consider different signal delays, for the processing of 5.1 for example high-quality sound channel sound source signals, probably can produce sluggish problem.In addition, because use infrared ray, also will the scope of user's transmission be limited, therefore, the content of this announcement then is limited to the wireless sound system that uses in automobile.
And invent in the open case content of No. 200603652 application in Taiwan in addition, a kind of multi-track radio sound system has been proposed.This multi-track radio sound system has receiving element, is used for receiving and demodulation wireless multichannel sound signal.This patent application case is to add receiving circuit at the earphone end, and utilizes rectification and exhibition mode frequently, obtain signal after, again by its decoder, this multi-channel sound signal is untied the signal of a different sound channel that pluralize.Mix and handle and the signal of these different sound channels is done, producing a plurality of audio mixing signals of different stereoeffects, and pass to loud speaker and sound via audio mixing and signal processor.Though this framework has preferable wireless transmission range, but the signal that but makes transmission becomes very complicated, and for the rectification signal after receiving, also need decoding via decoder, can't solve the signal content of 5.1 sound channel sound source easily because transmitting mistake effectively, cause the quality of signal transmission to influence to some extent relatively.In addition, for the design of earphone end,, can't reach compact designing requirement if function is too complicated.
The design of multi-track radio Headphone device must need have higher noise for the content of transmission and stand ratio except the terrain and its features restriction that can overcome wireless transmission signal effective range.In addition, also need consider and meet modern desired compact design.
The utility model content
Be vulnerable to the terrain and its features restriction in order to overcome existing multi-track radio Headphone device in effective range, the utility model provides a kind of multi-track radio Headphone device, and this multi-track radio Headphone device can overcome the terrain and its features restriction of wireless transmission signal effective range and have higher noise for the content of transmitting stands ratio.
The technical scheme that its technical problem that solves the utility model adopts is: this multi-track radio Headphone device comprises signal processing and dispensing device and wireless headset.Signal is handled and dispensing device is used to handle the decoding of multichannel digital audio, and produces many group digital tone source signals, and simultaneously described digital tone source signal is sent to the multi-track radio earphone by radio communication.Wireless headset utilizes radio communication directly to receive described digital tone source signal, and via digital-to-analogue conversion and after amplifying, via a plurality of loudspeaker generation multichannel sound fields of wireless headset.
For above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, a preferred embodiment cited below particularly, and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is proposed in the multi-track radio Headphone device by explanation the utility model, as the signal conveyer framework block schematic diagram of transmitting terminal.
Fig. 2 is proposed in the multi-track radio Headphone device by explanation the utility model, as the wireless headset framework block schematic diagram of receiving terminal.
Fig. 3 A～Fig. 3 D handles and the SRU sending-receiving unit schematic diagram as signal in the explanation multi-track radio Headphone device that the utility model proposed.
Fig. 4 A～4D is the receiving terminal of the explanation multi-track radio Headphone device that the utility model proposed, and has the wireless headset of receiving system.
Fig. 5 A～Fig. 5 D is in the explanation multi-track radio Headphone device that the utility model proposed, as another embodiment schematic diagram of signal processing and SRU sending-receiving unit.
The reference numeral explanation
100: signal is handled and transceiver
110: automatic input selector
120: digital signal processor
130: wireless communication module
140: microcontroller
150: the wireless communication module microcontroller
160,162 and 164: pressurizer
170: the direct voltage input
172: the earphone charging circuit
180: wireless headset
200: wireless headset
210: wireless communication module
212,214: antenna
216: the wireless communication module microcontroller
218: six sound channels digital analog converter (6 Channel DAC)
220: six sound channels Earphone Amplifier (6 Channel Headphone Amplifier)
224: delay circuit (Delay Circuit)
226:5.1 sound channel left and right sides earphone
228: microcontroller
230: control panel (Control Panel)
232: display apparatus module (Display Module)
234: rechargeable battery
236: pressurizer
238: microphone
300: signal is handled and dispensing device
305: wireless headset
310: main body
305: wireless headset
320: groove
322: linkage interface
330: battery insertion groove
340,350: display lamp
360: linkage interface
370: battery
410 with 430:5.1 sound channel left and right sides earphone
420: wireless communication module
422: display apparatus module (Display Module)
424: control panel
440: battery
500: signal is handled and dispensing device
510: universal serial convergence connecting bus (USB) connectivity port
Embodiment
The design of multichannel digital radio Headphone device except the terrain and its features restriction that can overcome wireless transmission signal effective range, need have higher noise for the content of transmission and stand ratio.In addition, also need consider and meet modern desired compact design.
The multichannel digital radio Headphone device design that the utility model proposed, decoding to multichannel signal source, be after finishing decoding by transmitting terminal, deliver to the earphone end by RTTY, and directly via digital-to-analogue conversion and after amplifying, be sent to a plurality of loud speakers, produce the surrounding sound field of multichannel, and the Headphone device of receiving terminal also can reach compact requirement.
The multi-track radio Headphone device that the utility model proposed, be applicable to and be connected to digital versatile disc (Digital Versatile Disc, under be called for short " DVD ") 5.1 sound channel sound source exported of player (under abbreviate the 6CH source of sound as), or be connected to the source of sound (under abbreviate the 2CH source of sound as) of stereo (Stereo).
For example receive from the output of the numeral of DVD player or game host provided when having the source of sound of 6CH, after decoding this 6CH source of sound earlier, decoding circuit in this transmitter is sent to the earphone broadcast of 5.1 sound channels in the digital radio mode, and the signal of output comprises three groups of signal sources, for example preposition solid (Front) signal, rearmounted three-dimensional (Rear) signal, center channel (Center) signal and supper bass (Subwoofer) signal.
But when if the signal that receives is the stereo source of sound of 2CH, for example provide the signal of the source of sound with 2CH from DVD player, or linear impulsive code modulated (Linear Pulse CodeModulation for example, LPCM) during the source of sound of form, multichannel digital radio Headphone device design of the present utility model, the at least two group loudspeaker that signal after amplifying is passed in the multi-sound-channel earphone simultaneously can be play, utilize the different loudspeaker combinations in the multi-sound-channel earphone, generation has the sound of sound field separating effect, make and originally be to produce different sound field effects by the stereo source of sound of 2CH.
The multichannel digital radio Headphone device design that the utility model proposed, the source of sound signal for receiving has the function of automatic detection, can detect 6CH source of sound and 2CH source of sound, and select the earphone broadcast mode according to this automatically.When if sound source signal is 6CH, just 5.1 sound channels are around audio, and then the signal of different sound channels is play the preposition main sound channel loudspeaker, supper bass loudspeaker, center channel loudspeaker and the surround channel loudspeaker that are sent to respectively in the multi-sound-channel earphone.In addition, when if sound source signal is 2CH, just stereo audio, then signal will be sent to the combination of left and right preposition main sound channel loudspeaker and left and right supper bass loudspeaker or other a plurality of loudspeaker respectively simultaneously, make it have different sound field effects, but not simple be sent to preposition main sound channel loudspeaker.
The multi-track radio Headphone device that the utility model proposed comprises signal processing and dispensing device and has the wireless headset of receiving system.Following examples will be respectively with Fig. 1 and Fig. 2 explanation.
Please refer to Fig. 1, in the explanation multi-track radio Headphone device that the utility model proposed, handle and SRU sending-receiving unit circuit box schematic diagram as signal.This signal is handled and dispensing device 100 comprises the pressurizer 160,162 and 164 that automatic input selector 110, digital signal processor 120, wireless communication module 130, microcontroller 140, wireless communication module microcontroller 150 and different voltages are exported.
Also can comprise direct voltage input 170 and earphone charging circuit 172 in addition, in order to wireless headset 180 is charged, this wireless headset 180 is the wireless headset that the utlity model has receiving system, it can adopt rechargeable battery, and charge via earphone charging circuit 172, this charging modes can be the charging of electrical contact or charging modes of electromagnetic induction or the like.
In this signal processing and dispensing device 100, automatically input selector 110 has coaxial line linkage interface and optical fiber linkage interface, be connected respectively to two kinds of signal sources, comprise the coaxial digital signal input source that transmits from coaxial line, or from optical fiber and digital signal input source that fibre circuit transmitted.And this automatic input selector 110 can detect and automatically switch digital signal source then outputs to digital signal processor (Digital Signal Processor, DSP) 120 with the signal that receives.
At this optical fiber linkage interface of mentioning, it can be the optical fiber linkage interface of S/PDIF form, by the connection line of optic fibre road that meets the S/PDIF specification, be sent to multi-channel decoder and produce for example DolbyDigital, DTS (Digital Theater System, DTS) surrounding sound field effect or stereo sound field effect.Dolby Digital, DTS belong to multi-channel audio formats together, generally are used in the sound equipment of 5.1 sound channels at present.And this S/PDIF form, full name is Sony/Philips Digital Interface, as the term suggests be the specification of being formulated with the cooperation of Philips two companies by Sony.The mode of connection of S/PDIF has two kinds, and first kind is adopted RCA unbalanced joint, uses the coaxial signal line with 75 ohmages, and another kind then is to adopt optical fiber cable.S/PDIF is the digital signal that the most generally appears in the domestic regulations, for example the digital sound recording of MD (Mini Disk), DVD around numeral output etc., be to use the connectivity port of S/PDIF form in this embodiment.
Digital signal processor (DSP) 120 is used to handle the decoding of multichannel digital audio, and its inside comprises decoding software, can handle Dolby Digital 5.1, Dolby Digital 2.0, Dolby Pro Logic, LPCM (stereo) or DTS coding signal, then export the signal of multichannel.The signal of this multichannel comprises three groups of signals, for example preposition solid (Front) signal, rearmounted three-dimensional (Rear) signal, center channel (Center) signal and supper bass (Sub woofer) signal.The multi-track radio Headphone device that the utility model proposed, digital signal processor (DSP) 120 at transmitting terminal, promptly carry out the decoding of signal, and resulting three groups of digital signals (comprise 1. preposition three-dimensional signals, 2. rearmounted three-dimensional signal, 3. center channel signal and supper bass signal) are sent to wireless communication module 130 transmit, simultaneously these three groups of signals are sent out by one group of antenna 132 and 134.This wireless communication module 130 can be radio frequency (Radio Frequency) radio transmitter that for example uses 2.4GHz.
And this signal is handled and dispensing device 100 has microcontroller 140 and wireless communication module microcontroller 150, respectively the operation of control figure signal processor 120 and wireless communication module 130.In addition, 160 of pressurizers are to obtain direct voltage source from direct voltage input 170, the voltage of 7.5 volts (Volts) shown in the figure for example, then be converted to the voltage of 5 volts (Volts), export pressurizer 162 and 164 to, export and change and export 2.5 volts of voltages respectively with 3.3 volts.
And the receiving terminal of the multi-track radio Headphone device that the utility model proposed for having the wireless headset of receiving system, please refer to Fig. 2, is the structural representation of display radio earphone 200.This wireless headset 200 comprises wireless communication module 210, one group of antenna 212 and 214 and in order to the wireless communication module microcontroller 216 of control.In addition, also comprise six sound channels digital analog converter (6 Channel DAC) 218, six sound channels Earphone Amplifier (6Channel Headphone Amplifier) 220, delay circuit (Delay Circuit) 224,5.1 sound channel left and right sides earphones 226.In addition, also comprise microcontroller 228, control panel (Control Panel) 230, display apparatus module (Display Module) 232 and pressurizer 236.
The operating voltage of elements such as above-mentioned wireless communication module 210, wireless communication module microcontroller 216, six sound channels digital analog converter 218, microcontroller 228, display apparatus module 232 is all provided by+3.3V pressurizer 236.And+voltage source of 3.3V pressurizer 236 is from rechargeable battery 234, this rechargeable battery 234 can charge via earphone charging circuit 172 as shown in Figure 1.Six sound channels Earphone Amplifier 220 then is directly to provide operating voltage by rechargeable battery 234.
Select among the embodiment one, in order to reach the function of automatic detection 6CH source of sound and 2CH source of sound, also comprise pattern of the input checkout gear (Input Format Detector) 240 and supper bass/preposition loudspeaker selection switching device shifters (Sub/Front Speaker Select Switch) 242.
This wireless communication module 210 is handled with signal and transmission each other and reception are used in the wireless communication module 130 mutual collocation of dispensing device 100.When wireless communication module 130 with three groups of digital signals such as preposition solid (Front) signal, rearmounted three-dimensional (Rear) signal, center channel (Center) signal and supper bass (Sub woofer) signals, by frequency is that the RF wireless radiofrequency band of 2.4GHz is when sending out, 210 of wireless communication modules are that radio frequency (Radio Frequency) radio receiver that utilizes its 2.4GHz that has receives three groups of signals simultaneously, and send six sound channels digital analog converter 218 to.
In this embodiment, because wireless headset 200 optionally adds microphone 238, therefore, except possessing radio receiver, also must possess radio transmitter in addition.And the wireless communication module 130 of Fig. 1 also must possess radio receiver and transmitter simultaneously, and radio reception/transmitter (Transceiver) just is so that receive microphone 238 signals from wireless headset 200.
Six sound channels digital analog converter 218 mainly is to convert three groups of digital signals such as preposition solid (Front) signal, rearmounted three-dimensional (Rear) signal, center channel (Center) signal and supper bass (Sub woofer) signal to analog signal.
And six sound channels Earphone Amplifier 220 is used for the analog signal of six sound channels digital analog converter 218 outputs is amplified to promote 5.1 sound channel earphones.224 of delay circuits (Delay Circuit) are to be used to block start moment amplifier to deliver to the impulse current of loudspeaker with protection people ear.
It is 5.1 or stereo that pattern of the input checkout gear 240 is used for the interpretation music format, and transmits a control signal to supper bass/preposition loudspeaker selection switching device shifter 242 according to music format, adjusts the loudspeaker configuration in order to control, listens to effect to reach the best.Supper bass/preposition loudspeaker select switching device shifter 242 in order to when input source of sound form is 5.1 sound channels, and supper bass will be sent to left and right sides supper bass loudspeaker.When input source of sound form when being stereo, a preceding left side and before right output will respectively and be connected to left and right sides supper bass loudspeaker, strengthen the stereo music effect, central authorities and back surround channel then do not have any output.
The multi-track radio Headphone device that the utility model proposed, the design that can have a free-standing microphone, this microphone can utilize for example connected mode of insertion slot type, for example this join domain is the conduction slot, microphone then can use for example design of hose type microphone, and link directly inserts the slot of join domain, and finishes electric connection.
In addition, the fixed form of microphone 238 and wireless headset 200 also can be chosen in and add magnet on the linkage interface, in the mode of using absorption microphone 238 is fixed on the wireless headset 200, if and when not using microphone 238, then it can be removed from wireless headset 200.
Please refer to Fig. 3 A～Fig. 3 D, in the explanation multi-track radio Headphone device that the utility model proposed, handle and the SRU sending-receiving unit schematic diagram as signal.This signal is handled and dispensing device 300 inside comprise the pressurizer of automatic input selector, digital signal processor, wireless communication module, microcontroller, wireless communication module microcontroller, the output of different voltage and earphone charging circuit or the like, function as described in Figure 1 is this no longer superfluous stating.
This signal handle and the main body 310 of dispensing device 300 on, comprise two in order to putting the grooves 320 of wireless headset 305, have linkage interface 322 in this inside grooves in order to electrically connect with wireless headset 305, for example be many pin (Pins).And in addition, also comprise a battery insertion groove 330, battery 370 can be inserted in this, and provide power supply, this is direct voltage input 170 of Fig. 1, certainly, the direct voltage input be not limited to adopt rechargeable battery, in addition can also external transformer (Adapter) mode provide.
And, have two groups of display lamps 340 and 350 in the wherein side of main body 310, and this display lamp 340 can be in order to the charged state of display radio earphone 305, and display lamp 350 then is whether to provide power supply at present in order to show.And these two groups of display lamps 340 and 350 can adopt light-emitting diode (LED) display unit.And in the other side of main body 310, then be to have a linkage interface 360, this linkage interface has a plurality of connection jacks, can be in order to connect different sources of sound, and coaxial signal line of for example optical fiber linkage interface of S/PDIF form, or RCA unbalanced joint or the like.Or see through for example linkage interface transmission signal of universal serial convergence connecting bus (USB).
When two earphone ends of wireless headset 305 are inserted groove 320 respectively,, can utilize the earphone charging circuit of signal processing and dispensing device 300 inside to charge owing to electrically connect.This introduction be the charging modes of electrical contact, certainly also can adopt the charging modes of electromagnetic induction in addition.
Please refer to Fig. 4 A～4D, the receiving terminal of the multi-track radio Headphone device that the utility model proposed has the wireless headset of receiving system.At Fig. 4 A and 4B is that wherein the side of the wireless headset of a side is shown schematic diagram, and Fig. 4 C and 4D show schematic diagram for the side of the wireless headset of another side.This wireless headset has 5.1 sound channel left and right sides earphones 410 and 430, and its top comprises wireless communication module 420 and battery 440 in order to the part of wearing user's head.And its inside has one group of antenna and the wireless communication module microcontroller in order to control.In addition, also comprise six sound channels digital analog converter (6 ChannelDAC), six sound channels Earphone Amplifier (6 Channel Headphone Amplifier), delay circuit (DelayCircuit), microcontroller and pressurizer, said structure is content as described in Figure 2, this no longer superfluous stating.In addition, this wireless communication module 420 also comprises control panel (Control Panel) 424 and display apparatus module (Display Module) 432.
Please refer to Fig. 5 A～Fig. 5 C, in the explanation multi-track radio Headphone device that the utility model proposed, as another embodiment schematic diagram of signal processing and SRU sending-receiving unit.This signal is handled and dispensing device 500 inside comprise pressurizer of USB sound effect control device, analog-digital converter, wireless communication module, wireless communication module microcontroller, the output of different voltage or the like, and function as described in Figure 1 is this no longer superfluous stating.And this signal is handled and dispensing device 500 maximum differences are directly to use to have the signal source that a universal serial convergence connecting bus (USB) connectivity port 510 is connected to USB, be generally computer installation, comprise individual or mobile computer, and be transferred to wireless headset after the multichannel source of sound signal process analog digital conversion with computer.And also can be connected to the sound source of outside via the patchcord of a USB in addition as Fig. 5 D.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; those skilled in the art can do some changes and retouching under the prerequisite that does not break away from spirit and scope of the present utility model, therefore protection range of the present utility model is as the criterion with claim of the present invention.
Claims (13)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201341145U CN201328181Y (en) | 2008-09-12 | 2008-09-12 | Multi-sound channel digital sound field wireless earphone device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008201341145U CN201328181Y (en) | 2008-09-12 | 2008-09-12 | Multi-sound channel digital sound field wireless earphone device |
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| CN201328181Y true CN201328181Y (en) | 2009-10-14 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103945310A (en) * | 2014-04-29 | 2014-07-23 | 华为终端有限公司 | Transmission method, mobile terminal, multi-channel earphones and audio playing system |
| US9233300B2 (en) | 2012-07-24 | 2016-01-12 | Microchip Technology Incorporated | System to deliver prioritized game audio wirelessly with a minimal latency |
| CN105979467A (en) * | 2016-04-29 | 2016-09-28 | 乐视控股（北京）有限公司 | Method and device for integrating multiple audio signal post-processing algorithms in Qualcomm platform |
| CN106488360A (en) * | 2015-09-01 | 2017-03-08 | 安桥株式会社 | Music player |
-
2008
- 2008-09-12 CN CNU2008201341145U patent/CN201328181Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9233300B2 (en) | 2012-07-24 | 2016-01-12 | Microchip Technology Incorporated | System to deliver prioritized game audio wirelessly with a minimal latency |
| CN103945310A (en) * | 2014-04-29 | 2014-07-23 | 华为终端有限公司 | Transmission method, mobile terminal, multi-channel earphones and audio playing system |
| CN103945310B (en) * | 2014-04-29 | 2017-01-11 | 华为终端有限公司 | Transmission method, mobile terminal, multi-channel earphones and audio playing system |
| US9788096B2 (en) | 2014-04-29 | 2017-10-10 | Huawei Device Co., Ltd. | Transmission method, mobile terminal, multi-channel headset, and audio play system |
| CN106488360A (en) * | 2015-09-01 | 2017-03-08 | 安桥株式会社 | Music player |
| CN105979467A (en) * | 2016-04-29 | 2016-09-28 | 乐视控股（北京）有限公司 | Method and device for integrating multiple audio signal post-processing algorithms in Qualcomm platform |
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