CN205622849U - Portable multitrack surround sound wireless sound system - Google Patents
Portable multitrack surround sound wireless sound system Download PDFInfo
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- CN205622849U CN205622849U CN201620310790.8U CN201620310790U CN205622849U CN 205622849 U CN205622849 U CN 205622849U CN 201620310790 U CN201620310790 U CN 201620310790U CN 205622849 U CN205622849 U CN 205622849U
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Abstract
The utility model provides a portable multitrack surround sound wireless sound system, its characterized in that includes audio frequency wireless transmitting module, wireless audio frequency receiving module and audio amplifier, lithium battery supply can be taken certainly to the audio amplifier to integrated have power amplifier module, or external power supply, and the integration has power amplifier module, audio frequency wireless transmitting module and wireless audio frequency receiving module communication connection, wireless audio frequency receiving module links to each other with the audio amplifier, still include surround decoder module, SPDIF decoder module or HDMI audio frequency separating module and audible spectrum correction module, surround decoder module's output and SPDIF decoder module or HDMI audio frequency separating module's input link to each other, SPDIF decoder module or HDMI audio frequency separating module's output with audible spectrum correction module's input links to each other, audible spectrum correction module's output with audio frequency wireless transmitting module's input links to each other. The utility model discloses simple structure, portable and removal.
Description
Technical field
The utility model relates to a kind of Portable multi-track surround sound wireless sound system.
Background technology
Multitrack surround sound technology can make hearer experience the more life-like direction feeling of sound works, spatial impression, Sensurround, third dimension, brings the high-quality hearing enjoying that hearer is much better than plane stereophony.Play entering family with the form of home theater around sound system and listening to scene of multitrack surround sound, the broadcasting channel number of multitrack surround sound sound system also by 5.1 towards the 6.1st, the 7.1st, 7.1.2,7.1.4, the path of panorama sound carry out evolution.
But the traditional surround sound sound system playing multitrack surround sound at present also exists more obvious shortcoming, not only have impact on popularizing of it, also limit multitrack surround sound audio production and listen to the expansion further of scene.Main as follows:
1st, sound system structure is complicated, high expensive
The high-end minority fan crowd of tradition multitrack surround sound sound system positioning specialty, listen to scene and be then positioned in family spaciousness, the preferably parlor through specialty Acoustic treatment, and sound system walks the professional route of higher-end, therefore system complex, high expensive, a set of multitrack surround sound sound system is tens of thousands of easily.
Complicated system, higher cost, more harsh listen to environmental requirement, have impact on multitrack surround sound sound system and popularize He Puhui to broad masses of the people.
2nd, sound system line is complicated, installs constant, changes different use environment quite inconvenient
Mostly being wired connection between the tradition each parts of multitrack surround sound sound system, audio amplifier mostly is passive loudspeaker box, therefore the wiring of whole system is complicated, install inconvenience, is loaded on parlor more.And after once dressing up, use environment and scene to change, be very trouble, thus limit multitrack surround sound sound system promoting the use of under varying environment and scene: bedroom, bachelor apartment, independent Administrative Area etc..
Fig. 1 is the complicated schematic wiring diagram of traditional 5.1 sound channel surround sound sound systems (5.1 home theater sound equipment system), and the cable that need to connect includes: tone frequency channel wire, power line.When house decoration is taked in the wiring of home theater sound equipment system more pre-buried, or rewiring when system is installed.After system installation, not readily portable move in other environment.
How to allow hearer can reduce the puzzlement of the installation of multitrack surround sound sound system, wiring, obtain the hearing enjoying of high-quality multitrack surround sound audio frequency with less cost, simultaneously can flexibly, easily under different use scenes,: bedroom, bachelor apartment, independent office are interval, move and dispose multitrack surround sound sound system, being the universal key with Pu Hui to vast family, many people of multitrack surround sound technology.
Therefore, it is necessary to a kind of Portable multi-track surround sound wireless sound system of design.
Utility model content
The utility model is solved the technical problem that to be, for the deficiencies in the prior art, provides a kind of Portable multi-track surround sound wireless sound system, the utility model simple in construction, it is simple to carry and move.
The technical solution of the utility model is；
A kind of Portable multi-track surround sound wireless sound system, including audio wireless transmitter module, wireless audio reception module and audio amplifier, described audio amplifier can carry lithium battery power supply union and become to have power amplifier module, it is possible to be external power supply integrated meritorious amplification module；Described audio wireless transmitter module communicates to connect with wireless audio reception module, and described wireless audio reception module is connected with audio amplifier.Described audio wireless transmitter module is to the multi-channel analog coding audio signal inputting, modulation and wireless transmission；Described wireless audio reception module receives the wireless signal that audio wireless transmitter module is launched, and from this wireless signal, the required audio signal of demodulation output simultaneously exports to the portable loudspeaker box being attached thereto, and plays after carrying out power amplification.
Above-mentioned Portable multi-track surround sound wireless sound system, also includes audible spectrum correction module, and the output of audible spectrum correction module is connected with the input of described audio wireless transmitter module.The frequency response of the analog signal to input for the audible spectrum correction module carries out precorrection, make audio signal after audio wireless is launched and received (after audio wireless transmitter module with wireless audio reception module), the frequency response of comparatively ideal 20Hz～20KHz bandwidth can be possessed.
If the frequency response curve of audio wireless transceiver module can keep the opposing straight of frequency response curve in 20Hz～20KHz bandwidth, native system also can be not added with audible spectrum correction module.The frequency response of the conventional ANTENNAUDIO transceiver module of industry is poor, it is impossible to ensures the frequency response bandwidth requirement of high-quality multitrack surround sound, i.e. keeps the opposing straight of frequency response curve in 20Hz～20KHz bandwidth.Therefore the utility model is by adding audible spectrum correction module, carries out reverse isostatic correction to audio signal frequency spectrum in advance.
Above-mentioned Portable multi-track surround sound wireless sound system, also includes S/PDIF decoder module or HDMI audio frequency separation module, and the output of S/PDIF decoder module or HDMI audio frequency separation module is connected with the input of described audible spectrum correction module.S/PDIF decoder module or HDMI audio frequency separation module to input be packaged into S/PDIF or the digital signal streams of HDMI form is decoded, multi-path digital audio signal decoding therein will be encapsulated in, and the simulated audio signal mode separating with multichannel exports.
Above-mentioned Portable multi-track surround sound wireless sound system, also includes surround sound decoder module, and the output of surround sound decoder module is connected with the input of S/PDIF decoder module or HDMI audio frequency separation module.Surround sound decoder module, by the multitrack surround sound digital audio stream by inputs such as wired mode (coaxial cable, optical fiber, netting twine etc.), wireless modes (WiFi etc.) or USB/SD card/TF card for the outside, it is decoded as multi-path digital audio signal, and be packaged into the digital signal streams output of S/PDIF or HDMI form.
Or, above-mentioned Portable multi-track surround sound wireless sound system, audible spectrum correction module can not be included, but also including S/PDIF decoder module or HDMI audio frequency separation module, the output of S/PDIF decoder module or HDMI audio frequency separation module is connected with the input of described audio wireless transmitter module.
Above-mentioned Portable multi-track surround sound wireless sound system, also includes surround sound decoder module, and the output of surround sound decoder module is connected with the input of S/PDIF decoder module or HDMI audio frequency separation module.
Described audible spectrum correction module includes multiple audio correction circuit (audible spectrum syndrome module), and the number of audio correction circuit (audible spectrum syndrome module) is identical with the channel number of Portable multi-track surround sound wireless sound system；
Each audio correction circuit includes resistance R1, R2, R3, R4, R5, R6 and R7, electric capacity C1, C2, C3, C4 and C5, adjustable potentiometer RW1 and RW2, and an operational amplifier；
Resistance R1, adjustable potentiometer RW1 and resistance R2 are sequentially connected in series and are followed by between the input and output of audible spectrum correction module；
Resistance R4, adjustable potentiometer RW2 and resistance R5 are sequentially connected in series and are followed by between the input and output of audible spectrum correction module；
Electric capacity C1 and C2 series connection is followed by the two ends of adjustable potentiometer RW1, and the tie point of electric capacity C1 and C2 connects the center contact of adjustable potentiometer RW1；
It is serially connected with resistance R3 and electric capacity C3 between the center contact of the center contact of adjustable potentiometer RW1 and adjustable potentiometer RW2；
The anti-phase input of operational amplifier is terminated between resistance R3 and electric capacity C3；
It is connected resistance R6 and R7 that power supply VCC is concatenated and power supply, resistance R7 is parallel with electric capacity C5；The in-phase input end of operational amplifier connects the tie point of R6 and R7；The power supply of operational amplifier-connect power supply ground；
Power supply VCC is also connected through electric capacity C4 and power supply；The positive pole of the power supply of operational amplifier+connect electric capacity C4.
Audio correction circuit can regard the mashed up of the high frequency filter of a single order, active, the low pass filter of first order pole and single order, active, first order pole as.
A, low pass filter
Low pass filter is made up of R1, R2, RW1, C1, C2, operational amplifier and power supply peripheral circuit (R6, R7, C4, C5) thereof.The decay of signal and amplification are mainly completed by RW1 adjustable potentiometer, and the cut-off frequency control of low frequency is completed by R1, C1 and R2, C2.
When needing decay low frequency, RW1 being slided into the right, low frequency multiplication factor is: R2/ (R1+RW1) < 1, and cut-off frequency is 1/ (2 π R1C1)；When needing to amplify low frequency, RW1 being slided into the left side, low frequency multiplication factor is: (R2+RW1)/R1 > 1, and cut-off frequency is 1/ (2 π R2C2)；It can be seen that R1 and R2 symmetrically relation (making R1=R2) during the control of multiplication factor, had influence on again the size amplified and decay simultaneously, therefore when controlling cut-off frequency, use duplex controllable capacitor, use a knob can control the size of C1 and C2 simultaneously, allow C1=C2, accomplish that volume control and cut-off frequency control separate, it is ensured that adjustable while volume and frequency.Multiplication factor and frequency range, by the state modulator of variable resistor and electric capacity, do not repeat them here.
B, high-pass filter
High-pass filter is by R3, R4, R5, C3, RW2, and R1, R2, operational amplifier and power supply peripheral circuit (R6, R7, C4, C5) composition thereof.Making RD=R3=R1=R2, decay and the amplification of signal are mainly completed by RW2 adjustable potentiometer, and the cut-off frequency control of high frequency is completed jointly by R1, R2, R3, C3.
When needing decay high frequency, RW2 is slided into the right, High frequency amplification multiple is [1/ (1/R5+1/3*RD)]/[1/ (1/ (RW2+R4)+1/ (3*RD))], and cut-off frequency is 1/ [2 π (3*RD) C3]；When needing to amplify high frequency, RW2 being slided into the left side, High frequency amplification multiple is [1/ (1/ (R5+RW2)+1/3*RD)]/[1/ (1/R4+1/3*RD)], and cut-off frequency is 1/ [2 π (3*RD) C3]；Use variable resistance RW2 control high-frequency gain, use variable condenser C3 control cut-off frequency, it is ensured that adjustable while volume and frequency.
Note: then regulating potentiometer RW2 can have less impact to low-frequency gain, it is proposed that first regulates high-frequency parameter, then adjusts low frequency part again.
Described audio wireless transmitter module and wireless audio reception module pass through bluetooth module or the communication connection of 2.4GHz/5.8GHz wireless module.
Described surround sound decoder module can be the 5.1st, the 6.1st, 7.1, and the surround sound decoder module of more multichannel, corresponds respectively to the 5.1st, the 6.1st, 7.1, and the decoding of the surround sound digital audio stream of more multichannel.
When Portable multi-track surround sound wireless sound system is 5.1 sound channel surround sound wireless sound system, described surround sound decoder module is 5.1 surround sound decoder modules (notes: when Portable multi-track surround sound wireless sound system is the 6.1st, 7.1 sound channel surround sound wireless sound system, described surround sound decoder module is corresponding 6.1st, 7.1 surround sound decoder module).Audio wireless transmitter module can use following structure:
It a, is made up of 3 wireless transmission submodules, all carry out to 2 road simulated audio signals of input to each wireless transmission submodule encoding, modulate, wireless transmission；Note: when Portable multi-track surround sound wireless sound system is the 6.1st, 7.1 sound channel surround sound wireless sound system, audio wireless transmitter module is made up of 4 wireless transmission submodules.
B, wireless transmission submodule, can use the ISM band at 2.4GHz/5.8GHz, by GFSK (GFSK Gaussian Frequency Shift Keying) modulation technique, is modulated 2 road simulated audio signals of input, wireless transmission；
C, wireless transmission submodule, also the audio wireless transmission technology based on Bluetooth technology system can be used: i.e. first SBC (sub-band coding) is carried out to 2 road simulated audio signals of input, then it is encapsulated in A2DP (agreement of Advenced Audio Distribution Profile Bluetooth audio frequency mode) protocol package, then be transmitted launching by blue tooth wireless technology；
D, when the 6 road simulated audio signals that S/PDIF decoder module or HDMI audio frequency separation module export have 2 tunnels to be directly connected to portable loudspeaker box by wired mode, audio wireless transmitter module can only comprise 2 wireless transmission submodules；Note: when Portable multi-track surround sound wireless sound system is the 6.1st, 7.1 sound channel surround sound wireless sound system, now audio wireless transmitter module can only comprise 3 wireless transmission submodules.
E, each wireless transmission submodule, each corresponding 2 wireless audio reception modules specified are 5., 5. each wireless transmission submodule i.e. launches wireless signal to 2 the wireless audio reception modules specified, and receives demodulation, decoding for them, and exports the simulated audio signal on that required 1 tunnel.
Wireless audio reception module can use following structure:
A, this module receive the wireless signal that in audio wireless transmitter module, that wireless transmission submodule corresponding is launched, and from the 2 tunnel audio signals that this wireless signal is comprised, that required 1 tunnel audio signal of demodulation output simultaneously exports.
B, each two wireless audio reception module receive the wireless signal (i.e. 1 wireless transmission submodule 2 wireless audio reception modules of correspondence) that one of audio wireless transmitter module wireless transmission submodule is launched.
5. c, wireless audio reception module need to use with corresponding reception, audio wireless transmitter module 4. in the consistent Radio Transmission Technology system of wireless transmission submodule.
1 portable loudspeaker box 1 wireless audio reception module of correspondence, inputs 1 road simulated audio signal from wireless audio reception module, plays after carrying out power amplification.Portable multi-track surround sound wireless sound system of the present utility model provides a kind of succinct solution, and this solution is applicable to: 5.1 sound channels, the 6.1st, 7.1 sound channel, or even the design and use of the multitrack surround sound sound system of more multichannel in the future.
Beneficial effect:
1st, the utility model is by industry existing specialized function module: multitrack surround sound decoder module, audio wireless transmission module (ISM of 2.4GHz/5.8GHz exempts from licensed band audio wireless transmission module and bluetooth Bluetooth wireless audio transmission module), carries lithium battery and carries power amplifier or external power supply carries the portable loudspeaker box of power amplifier；With the audible spectrum correcting circuit module of independent research design, combined innovation builds.Use the existing ripe technology of industry, the current techique functional module of low cost, the audible spectrum correcting circuit module with independent research, low cost create high performance Portable multi-track surround sound wireless sound system.Native system fully excavates the potentiality having played industry existing current techique functional module so that it is present bigger use value in this combined innovation system.The full Wireless achieving multichannel high quality audio sends and receives.2nd, the multitrack surround sound audio frequency that this system can not only make hearer can obtain high-quality is enjoyed, and effectively solve that tradition multitrack surround sound sound system structure is complicated, cost high, wiring is installed complicated loaded down with trivial details, it is unfavorable for carrying and moves, and being not suitable for the drawback using under multiple use environment and several scenes (: bedroom, bachelor apartment, independent office are interval).Native system low cost, the characteristic can carried with, can install at any time, that listens to the multitrack surround sound audio production promoting high-quality is universal, and the Pu Hui of multitrack surround sound sound system has great significance.
3rd, native system possesses by simple partition and arranges, and can be transformed into multipair current industry most popular stereophony portable mobile wireless sound box system easily；
4th, independent research audible spectrum correcting circuit module, adds this module the frequency response curve of whole system can be made to be promoted to the level of audio broadcasting level, makes hearer pass through system and can obtain the multitrack surround sound of professional broadcast level and play and enjoy.
Brief description
Fig. 1 is traditional 5.1 channel home theater sound system schematic wiring diagram
Fig. 2 is portable 5.1 sound channel surround sound wireless sound system structured flowcharts in embodiment 1
Fig. 3 is embodiment 1 sound intermediate frequency Spectrum Correction module 3. schematic diagram
Fig. 4 is embodiment 1 sound intermediate frequency wireless transmitter module 4. structured flowchart
Fig. 5 is wireless audio reception module 5. structured flowchart in embodiment 1
Fig. 6 is audible spectrum correction module 3. circuit diagram
Fig. 7 is audible spectrum correction module low frequency part spectrum signature
Fig. 8 is audible spectrum correction module HFS spectrum signature
Fig. 9 is portable 5.1 sound channel surround sound wireless sound system application scenarios schematic diagrames 1 in embodiment 1
Figure 10 is portable 5.1 sound channel surround sound wireless sound system application scenarios schematic diagrames 2 in embodiment 1
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Embodiment 1:
The present embodiment is illustrated as a example by portable 5.1 sound channel surround sound wireless sound systems, and the design concept being used and scheme are all applicable to the 6.1st, 7.1 sound channel, or even the multitrack surround sound wireless sound system of more multichannel.
1st, the composition of this 5.1 sound channel surround sound wireless sound systems
Native system can by Fig. 2 1., 2., 3., 4., 5., the following flexible combination construction cost system of 6. six kinds of functional modules:
A、①+②+③+④+⑤+⑥
B、②+③+④+⑤+⑥
C、③+④+⑤+⑥
D、④+⑤+⑥
E、②+④+⑤+⑥
F、①+②+④+⑤+⑥
2nd, the function of each module in Fig. 2
2.1st, 5.1 surround sound decoder modules are 1.
Wired mode is passed through in outside by this module: coaxial cable, optical fiber, netting twine etc.；Or wireless mode: WiFi；Or 5.1 sound channel surround sound digital audio streams of the input such as USB/SD card/TF card, it is decoded as the 6 railway digital audio signals corresponding with C, LFE, FL, FR, SL, SR, and be packaged into S/PDIF or the digital signal streams of HDMI form exports.
Note: C, LFE, FL, FR, SL, SR, represents: center channels audio signal, mega bass channel audio signal, preposition left channel audio signal, preposition right channel audio signal, left surround sound audio channel signal, right surround channel audio signal respectively.
2.2nd, S/PDIF decoder module or HDMI audio frequency separation module are 2.
This module to input be packaged into S/PDIF or the digital signal streams of HDMI form is decoded, will be encapsulated in 6 railway digital audio signal decodings therein, and the simulated audio signal mode separating with 6 tunnels exports.
2.3rd, audible spectrum correction module is 3.
The frequency response of analog signal to input for this module carries out precorrection, make audio signal after audio wireless is launched and is received (through 4., 5. after two modules), the frequency response of comparatively ideal 20Hz～20KHz bandwidth can be possessed.
Note: if the frequency response curve that audio wireless transceiver module is 4., 5. can keep the opposing straight of frequency response curve in 20Hz～20KHz bandwidth, 3. native system also can be not added with audible spectrum correction module.
The frequency response of the conventional ANTENNAUDIO transceiver module of industry is poor, it is impossible to ensures the frequency response bandwidth requirement of high-quality multitrack surround sound, i.e. keeps the opposing straight of frequency response curve in 20Hz～20KHz bandwidth.Therefore by adding audible spectrum correction module 3., in advance reverse isostatic correction is carried out to audio signal frequency spectrum.
Circuit shown in Fig. 6 is audio frequency low pass and the high-pass filter of a gain control, can regard high frequency filter mashed up of a single order, active, the low pass filter of first order pole and single order, active, first order pole as.
A, low pass filter
Low pass filter is made up of R1, R2, RW1, C1, C2, operational amplifier and power supply peripheral circuit (R6, R7, C4, C5) thereof.The decay of signal and amplification are mainly completed by RW1 adjustable potentiometer, and the cut-off frequency control of low frequency is completed by R1, C1 and R2, C2.
When needing decay low frequency, RW1 being slided into the right, low frequency multiplication factor is: R2/ (R1+RW1) < 1, and cut-off frequency is 1/ (2 π R1C1)；When needing to amplify low frequency, RW1 being slided into the left side, low frequency multiplication factor is: (R2+RW1)/R1 > 1, and cut-off frequency is 1/ (2 π R2C2)；It can be seen that R1 and R2 symmetrically relation (making R1=R2) during the control of multiplication factor, had influence on again the size amplified and decay simultaneously, therefore when controlling cut-off frequency, use duplex controllable capacitor, use a knob can control the size of C1 and C2 simultaneously, allow C1=C2, accomplish that volume control and cut-off frequency control separate, it is ensured that adjustable while volume and frequency.Multiplication factor and frequency range, by the state modulator of variable resistor and electric capacity, do not repeat them here.
B, high-pass filter
High-pass filter is by R3, R4, R5, C3, RW2, and R1, R2, operational amplifier and power supply peripheral circuit (R6, R7, C4, C5) composition thereof.Making RD=R3=R1=R2, decay and the amplification of signal are mainly completed by RW2 adjustable potentiometer, and the cut-off frequency control of high frequency is completed jointly by R1, R2, R3, C3.
When needing decay high frequency, RW2 is slided into the right, High frequency amplification multiple is [1/ (1/R5+1/3*RD)]/[1/ (1/ (RW2+R4)+1/ (3*RD))], and cut-off frequency is 1/ [2 π (3*RD) C3]；When needing to amplify high frequency, RW2 being slided into the left side, High frequency amplification multiple is [1/ (1/ (R5+RW2)+1/3*RD)]/[1/ (1/R4+1/3*RD)], and cut-off frequency is 1/ [2 π (3*RD) C3]；Use variable resistance RW2 control high-frequency gain, use variable condenser C3 control cut-off frequency, it is ensured that adjustable while volume and frequency.
Note: then regulating potentiometer RW2 can have less impact to low-frequency gain, it is proposed that first regulates high-frequency parameter, then adjusts low frequency part again.
Fig. 7 and Fig. 8 is respectively audible spectrum correction module low frequency and HFS spectrum signature figure.
2.4th, audio wireless transmitter module is 4. (as shown in Figure 4)
A, this module are made up of 3 wireless transmission submodules, all carry out encoding to 2 road simulated audio signals of input to each wireless transmission submodule, modulate, wireless transmission；
B, audio wireless transmitter module 4. in wireless transmission submodule, the ISM band at 2.4GHz/5.8GHz can be used, by GFSK (GFSK Gaussian Frequency Shift Keying) modulation technique, 2 road simulated audio signals of input are modulated, wireless transmission；
C, audio wireless transmitter module 4. in wireless transmission submodule, also the audio wireless transmission technology based on Bluetooth technology system can be used: i.e. first SBC (sub-band coding) is carried out to 2 road simulated audio signals of input, then it is encapsulated in A2DP (agreement of Advenced Audio Distribution Profile Bluetooth audio frequency mode) protocol package, then be transmitted launching by blue tooth wireless technology；
D, when the 6 road simulated audio signals that 2. S/PDIF decoder module or HDMI audio frequency separation module export have 2 tunnels by wired mode be directly connected to portable loudspeaker box 6. when, 4. audio wireless transmitter module can only comprise 2 wireless transmission submodules；
E, audio wireless transmitter module 4. in each wireless transmission submodule, each corresponding 2 wireless audio reception modules specified are 5., 5. each wireless transmission submodule i.e. launches wireless signal to 2 the wireless audio reception modules specified, and receive demodulation, decoding for them, and export the simulated audio signal on that required 1 tunnel.
2.5th, wireless audio reception module is 5. (as shown in Figure 5)
A, this module receive audio wireless transmitter module 4. in the wireless signal launched of that wireless transmission submodule corresponding, and from the 2 tunnel audio signals that this wireless signal is comprised, that required 1 tunnel audio signal of demodulation output simultaneously exports.
5. b, each two wireless audio reception module receive the wireless signal that audio wireless transmitter module one of 4. wireless transmission submodule is launched.
5. c, wireless audio reception module need to use with corresponding reception, audio wireless transmitter module 4. in the consistent Radio Transmission Technology system of wireless transmission submodule.
2.6th, portable loudspeaker box is 6.
This module is for carrying lithium battery power supply, carry power amplifier module, or external power supply, the portable loudspeaker box carrying power amplifier module.
6. portable loudspeaker box inputs 1 road simulated audio signal, plays out after power amplification.
Fig. 9 gives by wired, wireless digital TV-set network, IPTV network, OTT TV network, uses native system to listen to the use scene of 5.1 sound channel surround sound audio frequency；Figure 10 gives and is controlled by smart mobile phone or intelligent terminal, by internet/mobile Internet, uses native system to listen to the use scene of 5.1 sound channel surround sound audio frequency.
Claims (9)
1. a Portable multi-track surround sound wireless sound system, it is characterised in that include that audio wireless is sent out
Penetrate module, wireless audio reception module and audio amplifier；Described audio amplifier carries lithium battery power supply union and becomes to have power amplifier module,
Or external power supply integrated meritorious amplification module；Described audio wireless transmitter module leads to wireless audio reception module
Letter connects, and described wireless audio reception module is connected with audio amplifier.
2. Portable multi-track surround sound wireless sound system according to claim 1, it is characterised in that
Also include audible spectrum correction module, the output of audible spectrum correction module and described audio wireless transmitter module
Input be connected.
3. Portable multi-track surround sound wireless sound system according to claim 2, it is characterised in that
Also include S/PDIF decoder module or HDMI audio frequency separation module, S/PDIF decoder module or HDMI audio frequency
The output of separation module is connected with the input of described audible spectrum correction module.
4. Portable multi-track surround sound wireless sound system according to claim 3, it is characterised in that
Also include surround sound decoder module, the output of surround sound decoder module and S/PDIF decoder module or HDMI
The input of audio frequency separation module is connected.
5. Portable multi-track surround sound wireless sound system according to claim 1, it is characterised in that
Also include S/PDIF decoder module or HDMI audio frequency separation module, S/PDIF decoder module or HDMI audio frequency
The output of separation module is connected with the input of described audio wireless transmitter module.
6. Portable multi-track surround sound wireless sound system according to claim 5, it is characterised in that
Also include surround sound decoder module, the output of surround sound decoder module and S/PDIF decoder module or HDMI
The input of audio frequency separation module is connected.
7. the Portable multi-track surround sound wireless sound system according to according to any one of claim 2～4,
It is characterized in that, described audible spectrum correction module includes multiple audio correction circuit, audio correction circuit
Number is identical with the channel number of Portable multi-track surround sound wireless sound system；
Each audio correction circuit includes resistance R1, R2, R3, R4, R5, R6 and R7, electric capacity C1,
C2, C3, C4 and C5, adjustable potentiometer RW1 and RW2, and an operational amplifier；
Resistance R1, adjustable potentiometer RW1 and resistance R2 are sequentially connected in series and are followed by audible spectrum correction module
Between input and output；
Resistance R4, adjustable potentiometer RW2 and resistance R5 are sequentially connected in series and are followed by audible spectrum correction module
Between input and output；
Electric capacity C1 and C2 series connection is followed by the two ends of adjustable potentiometer RW1, the connection of electric capacity C1 and C2
Point connects the center contact of adjustable potentiometer RW1；
It is serially connected with electricity between the center contact of the center contact of adjustable potentiometer RW1 and adjustable potentiometer RW2
Resistance R3 and electric capacity C3；
The anti-phase input of operational amplifier is terminated between resistance R3 and electric capacity C3；
It is connected resistance R6 and R7 that power supply VCC is concatenated and power supply, resistance R7 is parallel with electric capacity C5；
The in-phase input end of operational amplifier connects the tie point of R6 and R7；The power supply of operational amplifier-connect power supply ground；
Power supply VCC is also connected through electric capacity C4 and power supply；The power supply of operational amplifier+just meeting electric capacity C4
Pole.
8. the Portable multi-track surround sound wireless sound system according to claim 4 or 6, its feature
Being, described surround sound decoder module is the 5.1st, the 6.1st, 7.1 or the surround sound decoder module of more multichannel, point
Yong Yu the 5.1st, the 6.1st, 7.1 or the decoding of surround sound digital audio stream of more multichannel.
9. Portable multi-track surround sound wireless sound system according to any one of claim 1～6, its feature
Be, described audio wireless transmitter module and wireless audio reception module pass through bluetooth module or
2.4GHz/5.8GHz wireless module communicates to connect.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107277691A (en) * | 2017-08-03 | 2017-10-20 | 四川长虹电器股份有限公司 | Multichannel audio player method, system and audio frequency net gate way apparatus based on cloud |
| CN107359893A (en) * | 2017-06-20 | 2017-11-17 | 汉桑（南京）科技有限公司 | A kind of wireless micro- cinema system |
| CN111263272A (en) * | 2020-01-19 | 2020-06-09 | 深圳巴金科技有限公司 | Audio signal shunting and returning method and system |
| CN111970613A (en) * | 2020-08-25 | 2020-11-20 | 海信视像科技股份有限公司 | Wireless transmitting device, control method and display device |
| WO2022042578A1 (en) * | 2020-08-25 | 2022-03-03 | 海信视像科技股份有限公司 | Display device, wireless transmitting apparatus, and audio output control method |
| CN118368563A (en) * | 2024-06-17 | 2024-07-19 | 深圳旷世科技有限公司 | Audio processing device and system |
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| CN107359893A (en) * | 2017-06-20 | 2017-11-17 | 汉桑（南京）科技有限公司 | A kind of wireless micro- cinema system |
| CN107277691A (en) * | 2017-08-03 | 2017-10-20 | 四川长虹电器股份有限公司 | Multichannel audio player method, system and audio frequency net gate way apparatus based on cloud |
| CN107277691B (en) * | 2017-08-03 | 2021-04-27 | 四川长虹电器股份有限公司 | Multi-channel audio playing method and system based on cloud and audio gateway device |
| CN111263272A (en) * | 2020-01-19 | 2020-06-09 | 深圳巴金科技有限公司 | Audio signal shunting and returning method and system |
| CN111970613A (en) * | 2020-08-25 | 2020-11-20 | 海信视像科技股份有限公司 | Wireless transmitting device, control method and display device |
| WO2022042578A1 (en) * | 2020-08-25 | 2022-03-03 | 海信视像科技股份有限公司 | Display device, wireless transmitting apparatus, and audio output control method |
| US11900007B2 (en) | 2020-08-25 | 2024-02-13 | Hisense Visual Technology Co., Ltd. | Display apparatus |
| CN118368563A (en) * | 2024-06-17 | 2024-07-19 | 深圳旷世科技有限公司 | Audio processing device and system |
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