CN106535063A - Wireless network audio high-fidelity streaming media player - Google Patents

Wireless network audio high-fidelity streaming media player Download PDF

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Publication number
CN106535063A
CN106535063A CN201710023303.9A CN201710023303A CN106535063A CN 106535063 A CN106535063 A CN 106535063A CN 201710023303 A CN201710023303 A CN 201710023303A CN 106535063 A CN106535063 A CN 106535063A
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China
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module
wireless network
streaming media
audio frequency
bass
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CN201710023303.9A
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CN106535063B (en
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匡平
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Zhuhai Legang Science & Technology Co Ltd
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Zhuhai Legang Science & Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00Stereophonic arrangements
    • H04R5/04Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

The invention discloses a wireless network audio high-fidelity streaming media player, which comprises a host PCB arranged inside an upright trapezoidal player, wherein the upright trapezoidal player comprises an super bass chamber arranged at the bottom end; a DSP data processing module, and a lossless audio decoding unit, a DAC conversion module and a virtual bass module which are connected with the DSP data processing module are integrated on the host PCB; the lossless audio decoding unit is connected with an input module; the DAC conversion module is connected with an audio processing circuit, a full-frequency digital amplifier and a full-frequency loudspeaker in sequence; the virtual bass module is connected with a low-pass filtering circuit and a mega base digital amplifier in sequence; the mega base digital amplifier is connected with a bass loudspeaker arranged on one side of the super bass chamber; and the DAC conversion module is connected with the virtual bass module. The wireless network audio high-fidelity streaming media player combines the upright trapezoidal loudspeaker structure and circuit design with the super bass chamber design, so that the high-fidelity sound effect is achieved.

Description

A kind of wireless network audio frequency high-fidelity streaming media playing machine
Technical field
The present invention relates to based on internet stream media music and the equipment of mobile device audio playback, more particularly to one Wireless network audio frequency high-fidelity streaming media playing machine is planted, individually can be worked or wirelessly be combined by two like products with 2.1 sound channels Play into 2.2 sound channels.
Background technology
China's internet development surges forward, and especially mobile Internet has imported the daily life of people.Streaming Media Music is taken advantage of a situation and is given birth to, and the audio frequency of mobile device plays part acceptor product to be affected, and audio external play is limited to, though can also be enjoyed with earphone By good tonequality, but people listen at home hi-fi music just must external high power acoustics just can reach demand, spread Sound equipment and the wired connection of mobile device are substantially inconvenient, and various connecting lines can also affect the attractive in appearance of room, in addition, traditional sound equipment It is CD to play source of sound, DVD, VCD, etc. laser disc, have with FM/AM radios, the machine of early stage also carries deck, existing prevalence band There are USB, card reader, iPod seats etc., this mode is substantially that a kind of out-of-date music listens to mode, and various music film sources are unfavorable In storage, singer is selected to search the film source for storing also and its inconvenience.In the epoch that Internet resources enrich, high in the clouds almost will be all Singer's song of publication and distribution deposits in internet, is the following main side for listening to music of people by intelligent sound request music One of formula.
Today's society everyone playing life well with the mode of oneself, with the step pursuit fashion of oneself, abundantly enjoy The life of various digital entertainments, parlor, bedroom, study are required for the digital audio equipment of a set of modernization, and it should have section Skill sense, again with exhale to the greatest extent perfect tonequality, will also be using simple.It is well known that high-fidelity music center refers to CD+ simulation Class A work( Put or electronic tube power amplifier+Hi-Fi sound-box combination, market price is up to ten thousand to hundreds of thousands yuan.
The content of the invention
Based on the deficiencies in the prior art, it is an object of the invention to provide a kind of rational in infrastructure, compact, integrating Digital intelligent wireless network audio frequency high-fidelity streaming media playing machine, realizes high-fidelity music center effect with lower cost.
For achieving the above object, the technical scheme is that:
A kind of wireless network audio frequency high-fidelity streaming media playing machine, it is characterised in that:Including being arranged on inside trapezoid player Main frame pcb board, the trapezoid player includes the ultralow tone chamber for being arranged on its bottom, is integrated with the main frame pcb board DSP data processing modules and the lossless audio decoding unit being attached thereto respectively, DAC modular converters and virtual bass module;Institute State lossless audio decoding unit connection input module;The DAC modular converters are connected with audio frequency processing circuit, full range numeral in turn Power amplifier and full frequency speaker;The virtual bass module is sequentially connected low-pass filter circuit and supper bass digital power amplifier, described heavy Bass digital power amplifier is connected with the woofer for being arranged on ultralow tone chamber side;The DAC modular converters connection is described virtual Bass module.
Further, the subwoofer chamber interior is additionally provided with air balance barrier pipe device and the bending gas with extraneous ventilation Flow tube, the air balance barrier pipe device are arranged on the top of loudspeaker homonymy, and the bending pipe is arranged on air balance barrier pipe The top of device offside, interior gas port and the air balance barrier pipe device of bending pipe are correspondingly arranged.
Further, the air balance barrier pipe device includes prefocus cup and light shelter.
Further, the input module includes WIFI module, FM radio modules, bluetooth module, USB interface, TF clampings Mouthful, the one kind in AUX interfaces or microphone input or any combination it is various.
Further, the DSP data processing modules are connected with control unit, and described control unit is connected with WIFI moulds One or more in block, FM radio modules, bluetooth module, display screen or push-button unit.
Further, the DSP data processing modules are also associated with lighting control module, the lighting control module connection There is light driving circuit.
Further, the lossless audio decoding unit is connected with reverberation unit, and the reverberation unit is connected with Karaoke Microphone interface.
Further, the bottom of the trapezoid player is provided with the shockproof pin of inverted trapezoidal, the shockproof footmuff of the inverted trapezoidal It is provided with shock callus.
Further, the trapezoid player in pairs using, be spaced apart, one is used to play audio frequency L channel, one It is individual for playing audio frequency R channel.
Further, involved modular circuit is powered for it by power management module, the power management module connection There is power supply adaptor.
Beneficial effects of the present invention are:Trapezoid acoustic structure, circuit design are designed in conjunction with ultralow tone chamber, make the present invention Realize high-fidelity music center effect;
The active loundspeakerses of wifi module, bluetooth module, DSP and digital power amplifier, power management etc., are realized mutually with relatively low cost Networking high-fidelity music center function come substitute tradition several combination high-fidelity music centers, realize high-fidelity music center popular;
Make audio effect processing using built-in DSP during USB, TF card playing stream media music, allow the Streaming Media music of magnanimity reach or Surmount CD Quality;
Subwoofer cell structure is designed, and makes sound chamber low frequencies rate reach 90%, beneficial to improving market major part acoustic product low frequency Inadequate defect;
There is light-emitting device inside balance barrier pipe, facilitate user when music is listened at night without turning on light, substitute the background in room Light;
Trapezoidal vibration abatement, solve the uniform resonance problems of casing, it is to avoid the playback distortion that casing vibrations are produced.
Description of the drawings
Circuit structure block diagrams of the Fig. 1 for the specific embodiment of the invention;
DSP data processing module circuit theory diagrams of the Fig. 2 for the specific embodiment of the invention;
Virtual bass modular circuit schematic diagrams of the Fig. 3 for the specific embodiment of the invention;
LPF and supper bass digital power amplifier circuit theory diagrams of the Fig. 4 for the specific embodiment of the invention;
Player structural representations of the Fig. 5 for the specific embodiment of the invention;
Player decomposition texture schematic diagrams of the Fig. 6 for the specific embodiment of the invention;
T7-15X primitive curve figures of the Fig. 7 for the specific embodiment of the invention;
T7-15X frequency spectrum adjustment point schematic diagrames of the Fig. 8 for the specific embodiment of the invention;
Fig. 9 for the specific embodiment of the invention T7-15X Digital Signal Processing after do not open VB curve synoptic diagrams;
Figure 10 for the specific embodiment of the invention T7-15X Digital Signal Processing after have turned on VB curve synoptic diagrams;
T7-15X frequency spectrum point increase and decrease parameter list figures of the Figure 11 for the specific embodiment of the invention;
T7-15X VB parameter list figures of the Figure 12 for the specific embodiment of the invention.
Specific embodiment
The technique effect of the design, concrete structure and generation of the present invention is carried out clearly below with reference to embodiment and accompanying drawing Chu, it is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this Bright a part of embodiment, rather than whole embodiments, based on embodiments of the invention, those skilled in the art is not paying The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.
As shown in figure 1, a kind of wireless network audio frequency high-fidelity streaming media playing machine, including being arranged in trapezoid player The main frame pcb board in portion, the trapezoid player include the ultralow tone chamber for being arranged on its bottom, integrated on the main frame pcb board There are DSP data processing modules and the lossless audio decoding unit being attached thereto respectively, 44.1KHz DAC modular converters and virtual low Sound module;The lossless audio decoding unit connects input module;The DAC modular converters are connected with audio frequency process electricity in turn Road, full range digital power amplifier and full frequency speaker;The virtual bass module is sequentially connected low-pass filter circuit and supper bass numeral Power amplifier, the supper bass digital power amplifier are connected with the woofer for being arranged on ultralow tone chamber side;The DAC modular converters connect Connect the virtual bass module.
The input module includes WIFI module, FM radio modules, bluetooth module, USB interface, TF card interfaces, AUX interfaces Or the one kind or any combination in microphone input is various.
The DSP data processing modules are also associated with lighting control module, and the lighting control module is connected with light drive Dynamic circuit.
As shown in Fig. 2 the present embodiment DSP data processing module circuit theory diagrams, virtual bass moulds of the Fig. 3 for the present embodiment Block circuit theory diagrams, Fig. 4 are LPF and supper bass digital power amplifier circuit theory diagrams, virtual bass circuit module DAC-L ends It is connected with DAC change-over circuits with DAC-R ends, the output end of virtual bass modular circuit, i.e. SUB-OUT ends and LPF and weight The AUDIO-SD ends connection of the SUB-OUT ends connection of bass digital power amplifier circuit, LPF and supper bass digital power amplifier circuit The AUDIO-SD ends of DSP data processing module circuits.
The lossless audio decoding unit is connected with reverberation unit, and the reverberation unit is connected with Microphone for karaoke interface.
Involved modular circuit is powered for it by power management module, and the power management module is connected with power adaptation Device.
Wifi modules, are the core for accessing internet, can upload and download signal, and combination left and right acoustic channels audio frequency letter Number path.
Bluetooth module, aims at and wirelessly connect broadcasting sound with mobile device and the present embodiment under no wifi network environmental condition Happy facility.
FM frequency modulation reception modules, aim at the facility of listening in frequency modulation broadcast.
USB interface, can play the music of MP3 music and lossless format by USB flash disk.
TF card interfaces, can play the music of MP3 music and lossless format by TF cards.
AUX circuit input interfaces, can external other audio frequency apparatuses.
Microphone input, can search for radio station and song with phonetic entry in wifi states, also can be used as following Internet of Things system System language in-put control household electrical appliance, are capable of achieving hand-free call, use as conference system during bluetooth state.
LED display, can the information such as display function state and time.
The button of the present embodiment is that eight function buttons, wherein switching on and shutting down and broadcasting suspend a shared key;Function switches User's conversion is facilitated more to plant function;Volume+, volume-and the forward bent two keys multiplexing of jump backward;One key of phonetic search, by one Lower this key, says content to be looked for of controlling oneself against sound equipment, and system finds in a network and plays from work(;Network radio station can at most prestore 6, by 2 keys Backwards selection forward;One key specially controls light, realizes seven-color LED light and breath light effect.
Audio frequency processing circuit, carries out operation amplifier to the audio signal that DAC modular converters are sent.
Digital power amplifier, is amplified to the audio signal that audio frequency processing circuit is sent.
Full range unit, the audio electrical signal physics reduction sent by audio frequency processing circuit, full range music of resetting out.
Second-order low-pass filter, the low frequency signal of reductase 12 0Hz to 150Hz.
Digital power amplifier, the signal sent to low-pass filter circuit carry out D class amplifications.
Supper bass unit, the low frequency signal physics reduction sent to supper bass digital power amplifier module, resets out pure low The full range music of frequency music and full frequency speaker is overlapped.
Electric power management circuit, can effectively support that external adapter heat is inserted heat and dialled, can eliminate the spark of Hot insertion hot swapping generation, can + 22V, 5V, 3.3V electric energy are provided for each unit circuit, and complies fully with international efficiency and required, stand-by power consumption only has microampere order.
External power supply adapter, provides electric energy for whole machine, meets the requirement of six grades of efficiencies.
, used as central processing unit, DSP data processings and algorithm process, control is single for the present embodiment large scale integrated circuit Unit each peripheral unit is controlled and is communicated, lossless audio decoding unit to WIFI module, FM radio modules, bluetooth module, The voice data stream of USB interface, TF card interfaces, AUX interfaces or microphone is decoded, and supports lossless music format, is allowed and is System reaches CD Quality standard, completes decoded signal and deliver to DSP data processing modules to carry out data processing and algorithm process, processes After the completion of deliver to all the way DAC modular converters digital to analog converter produce high fidelity simulation signal, DAC moduluss of conversion design sample rate 48KHz is can reach, the sample rate of the present embodiment is 44.1KHz, it is therefore an objective to identical with CD sample frequencys, reaches CD Quality level. Deliver to virtual bass in another road(VB)The mega bass of purer 20Hz to 150Hz is fictionalized, the exportable high-fidelities of DAC are three-dimensional Sound, also exportable independent R channel or left channel signals.Digital reverberation generative circuit, with lossless audio solution after production reverberation sound The former mixture of tones decoded by code unit, realizes OK a karaoke club ok functions, and LED optical controller is capable of achieving three primary colours adjustment, can produce Raw seven-color LED light and breath light effect.
As shown in Figure 5 and Figure 6, the physical arrangement of the present embodiment fully complies with acoustical demands, the cabinet design of positive tower, weight Bass unit is installed on bottom half, and four 2.75 inches of full range intermediate frequencies clamp 20 core filaments film high pitchs, it is ensured that frequency of resetting The all standing from 20Hz to 22KHz is rung, relatively fast according to high frequency transfer rate, low frequency transmits relatively slow principle, trapezoidal to set Meter ensure that six unit sounding focusing synchronous, allows listener feel that sound is synchronously to send, solves low-and high-frequency Delay effect problem.Box part structure is as follows:
Optical filtering PVC pieces 1, display screen and infrared receiver position are golden steel transparent black, can effectively allow display screen display effect to become clear, And Show Color will not have aberration.Panel 2, display screen, eight buttons 3 and remote control reception window, electret microphone are all installed on On panel.Button pcb board 4 is connected with motherboard.4 2.75 cun of Full-frequency trumpets 5,2 are one group, connect mainboard left and right acoustic channels work( Put output end.4 2.75 cun of loudspeaker covers 6, guarantee are rakish simultaneously, and bell shape has amplification to sound.Silk Film high pitch 7, series connection frequency dividing electric capacity and the connection of main frame power amplifier.Cortina high pitch panel 8, bell shape is focused on to high pitch amplifies, and protects Barrier high pitch accurate positioning.Prefocus cup 9, to external warranty light homogeneous and bright, be connected loading box house lifting with light shelter 11 Barrier pipe effect between bass box unit and phase-reversing tube, increased the acoustic pressure of box house, does not allow the air-flow at unit rear portion direct Correspondence phase-reversing tube inner opening, efficiently solves the problems, such as that most of inverted phase type opening boxes easily have phase-reversing tube airflow noise, can allow sound Case bass is pure.LED pcb board 10, is connected with main frame light driving circuit, and generation seven is color and breathes light, allows the present invention to have Acousto-optic one, also can use as room night-luminescent lamp.Light shelter 11, plays optically focused effect.Optical filter 12, has optical filtering to luminous tube Effect, it is to avoid high light hinders eye.6.5 cun of loudspeaker covers 13, modify bass by inside trumpet shape while decoration function, allow sound more It is pure.6.5 cun of bass units 14, are connected with the output of motherboard supper bass.Top light filter glass 15, it is ensured that uniform light Play eyeshield effect simultaneously.Display screen 16, top LED and infrared remote receiver and Electret condenser microphone pcb board, LED are carried on the back for audio amplifier Portion's light source, display screen display working condition and temporal information, infrared receiver be remotely control entrance, Electret condenser microphone bluetooth When propose words input for hands-free, be Voice command input during wifi, this plate is connected with host-dependent interface.Back plate PVC piece 17, it is each defeated Entrance USB, TF card, AUX are integrated at this position.Mainboard PCB fixed panels 18, exempt from screw installation using plug-in type.Main frame pcb board 19, all modules and components and parts are all integrated on one block of plate, install simple, are easy to safeguard.Host PC B fixes compressing tablet 20, uses two Screw and 18 is installed together, fixed pcb board.Curved phase-reversing tube 21, gives low frequency sound equipment paraphase, and reaching strengthens the mesh of bass , the straight-through air blowing sound of the few air of bending design sense also can effectively strengthen the compression stress of air, make low frequency stronger.D/C power Input interface 22, powers to whole machine.The sound chamber of wooden case 23, the support member of whole part, and each unit.4 inverted trapezoidals are shockproof Pin 24, inverted trapezoidal design, landing fulcrum diminish, and reduce casing itself vibration and the friction on ground.4 sphere quakeproof rubber pads, and 24 are combined together, and the damping device effect of the high-fidelity music center for surmounting high cost is realized with lower cost, spherical shockproof Ground contact points are little, and have certain soft, available buffer shake power when audio amplifier vibrates, and the present embodiment can effectively will be casing resonance equal Even shield dissipates, and solves the playback distortion that casing vibrations are produced.
The Hz-KHz of high-fidelity music center is more wide better, but must also be that flat ability is meaningful, and 20Hz to 22KHZ two The attenuation at end can not be more than 3dB.Because the every poor 3dB of sensitivity of sound equipment output, the acoustic pressure of output will differ one times, only Sound equipment exports frequency response curve uniform flat and without obvious peak valley, it is just meaningful that the decay of two end of frequency response reaches minimum of a value.
Ever-changing in view of the actual environment for listening to music at home of user, the present embodiment carries out frequency spectrum in ultralow tone chamber The adjustment and actual measurement of curve, is digitized by the standard audio code stream solved to the non-damage decoder in lossless decoding unit Algorithm process, adjusts the frequency content in each piece of digital signal respectively, the electricity of setting and different frequency to electric signal amplification quantity The regulation of signal compensating 6 loudspeakers and the defect of casing sound field of the present embodiment, play compensation and modify various sound sources and Its special role.
The whole circuit of high low pitch of generally conventional high-fidelity music center or balanced device are only capable of to high frequency, intermediate frequency, three sections of low frequency Electrical signal of the frequency is adjusted respectively, and the digital processing unit of the present embodiment DSP digital processing elements can carry out 8 to full frequency band The frequency defect mending of node, carries out frequency upgrading or reduction, and the adjustment of multifrequency point, the scope and details of adjustment become apparent from, more Defect and regulation are repaired for totally digitilized beneficial to hi-fi reproduction, and the present embodiment is realized, high precision flexible with adjustment, surely Sizing is strong, small volume, the advantage such as energy-conservation.
Virtual bass in the virtual bass unit of the present embodiment(VB)Generator, is believed in full range piece of digital by algorithm Effective low frequency signal is extracted in number, is recycled the super low sound signal that digital second order wave filter extracts 20Hz-150Hz to overlap and is attached to On the 80Hz frequencies of full range curve, after adding virtual bass, low frequency sensitivity can increase more than 1dB, no matter from sense of hearing, amount sense and There is further improvement in texture, due to adding for VB signals, the sensitivity of full frequency band also with rear class sample rate can be 44.1KHz digital to analog converters are made to increase after corresponding conversion, digital power are amplified.
The present embodiment volume is set to 32 sections, and due to having used 6.5 inches of supper bass units of band logical, and supper bass is most Big rated power reaches 60W, and when volume reaches 50%, the sense of low frequency amount and texture have all exceeded the standard of high-fidelity, without the need for again Low frequency, virtual bass are supplemented on the frequency of 80Hz(VB)Numerical value can be automatically set as " 0 ", but virtual bass processor is not closed Close, modification is played to other frequency range audios only at this moment.
Fig. 7 is the present embodiment frequency in semi-anechoic room's actual measurement when data processor and virtual bass processor is not switched on Curve map, tests 20Hz 22KHz standard full range swept-frequency signals and pink noise signal that source of sound is international standard, can from figure To find out, when digital processing is not added, though frequency response width meets the requirements, paddy crest is obvious and each frequency between it is uneven.
Fig. 8 is the frequency curve oscillogram that the present embodiment prepares adjustment, is intended to 8 knot adjustments, and adjusting parameter is shown in Figure 11.
Figure 11 is the parameter of frequency spectrum point modification, and these parameters are according to unit(Loudspeaker)Actual measurement with casing sound chamber is bent Line, what comprehensive parameters were formulated, this parameter reaches optimal acoustics after being only adapted to the present embodiment combination.
Fig. 9 intends bass to be not added with considering(VB)Curve map, test condition, can from figure as mentioned in figure one Go out, frequency curve is substantially steady, and paddy peak effect thoroughly loses, sense of hearing and texture, amount sense have substantially reached high-fidelity requirement, But overall sensitivity is to be improved, low frequency 60Hz to 120Hz also has relatively small paddy peak, and more than high frequency 12KHz is also not flat enough.
Figure 10 is virtual bass(VB)Processor opens the curve map of actual measurement, mentioned in test condition and figure one Sample.Can be seen that from figure, after VB is opened, substantially in flat, low frequency paddy peak loses full range curve, and high frequency also has larger improvement, Particularly sensitivity has greatly improved, and minimum point has all reached 85db, and high frequency part has reached 90db, reached substantially height The curve requirement of fidelity sound equipment, sense of hearing also obtain the change of matter.
Figure 12 is virtual bass(VB)Numerical value, the present embodiment are set to 32 sections in total volume, and volume is VOL up to 50%>When 16, The value that bass virtual value increases on 80Hz frequencies is " 0 ", but virtual bass processor is not off.When 10≤VOL≤16, The value that bass virtual value increases on 80Hz frequencies is " 5% ", works as VOL<When 10, what bass virtual value increased on 80Hz frequencies Value is " 10% ", this ensure that when small volume listens to music, the present embodiment also ensures that low frequency reproduction has preferable effect.
The development and digitized revolution of science and technology, lower cost realizes that popular digital intelligent high-fidelity music center becomes can Can, the design of rational physical acoustics sound chamber, the application of data DSP, totally digitilized voicefrequency circuit, 2.4G/5G modularized designs and excellent Elegant power management, these are all the bases of modern High-fidelity sounder design.Furthermore, modernization high-fidelity music center and tradition height are protected True sound equipment compares, and advantage wants many it is clear that what is more important modernization high-fidelity music center has abandoned traditional high-fidelity music center The workable old thinking of ability after part machine assembly, digitized process cause modernization high-fidelity music center to play source of sound, audio Process(DSP), together with power amplifier is fully integrated with sound chamber and power management, eliminate suit high-fidelity music center at least The enclosure chassis of three and power supply.On the premise of equal tonequality and audio, money needed for manufacturing based on digital intelligence high-fidelity music center The consumption of source type raw material such as shell steel plate, power transformer copper cash etc. less than 1/10th of traditional high-fidelity music center, The conservation-minded society and " energy-conservation row subtract " that this is advocated to country is very favourable.
It should be noted that the above is presently preferred embodiments of the present invention, the invention is not limited in above-mentioned Embodiment, as long as which reaches the technique effect of the present invention with identical means, should all belong to protection scope of the present invention.

Claims (10)

1. a kind of wireless network audio frequency high-fidelity streaming media playing machine, it is characterised in that:Including being arranged in trapezoid player The main frame pcb board in portion, the trapezoid player include the ultralow tone chamber for being arranged on its bottom, integrated on the main frame pcb board There are DSP data processing modules and the lossless audio decoding unit being attached thereto respectively, DAC modular converters and virtual bass module; The lossless audio decoding unit connects input module;The DAC modular converters are connected with audio frequency processing circuit, full range number in turn Word power amplifier and full frequency speaker;The virtual bass module is sequentially connected low-pass filter circuit and supper bass digital power amplifier, described Supper bass digital power amplifier is connected with the woofer for being arranged on ultralow tone chamber side;The DAC modular converters connect the void Intend bass module.
2. wireless network audio frequency high-fidelity streaming media playing machine as claimed in claim 1, it is characterised in that:The ultralow tone chamber Inside is additionally provided with air balance barrier pipe device and the bending gas flow tube with extraneous ventilation, and the air balance barrier pipe device is arranged In the top of loudspeaker homonymy, the bending pipe is arranged on the top that air balance hinders pipe device offside, the interior gas port of bending pipe It is correspondingly arranged with air balance barrier pipe device.
3. wireless network audio frequency high-fidelity streaming media playing machine as claimed in claim 2, it is characterised in that:The air balance Barrier pipe device includes prefocus cup and light shelter.
4. wireless network audio frequency high-fidelity streaming media playing machine as claimed in claim 1, it is characterised in that:The input module Including the one kind in WIFI module, FM radio modules, bluetooth module, USB interface, TF card interfaces, AUX interfaces or microphone input Or any combination is various.
5. wireless network audio frequency high-fidelity streaming media playing machine as claimed in claim 1, it is characterised in that:The DSP data Processing module is connected with control unit, and described control unit is connected with WIFI module, FM radio modules, bluetooth module, display screen Or one or more in button.
6. wireless network audio frequency high-fidelity streaming media playing machine as claimed in claim 1, it is characterised in that:The DSP data Processing module is also associated with lighting control module, and the lighting control module is connected with light driving circuit.
7. wireless network audio frequency high-fidelity streaming media playing machine as claimed in claim 1, it is characterised in that:The lossless audio Decoding unit is connected with reverberation unit, and the reverberation unit is connected with Microphone for karaoke interface.
8. wireless network audio frequency high-fidelity streaming media playing machine as claimed in claim 1, it is characterised in that:The trapezoid is broadcast The bottom for putting machine is provided with the shockproof pin of inverted trapezoidal, and the shockproof footmuff of the inverted trapezoidal is provided with shock callus.
9. the wireless network audio frequency high-fidelity streaming media playing machine as described in any one of claim 1 to 8, it is characterised in that:Institute State trapezoid player in pairs using, be spaced apart, one is used to play audio frequency L channel, and one is used to play the right sound of audio frequency Road.
10. the wireless network audio frequency high-fidelity streaming media playing machine as described in any one of claim 1 to 7, it is characterised in that:Institute The modular circuit being related to is powered for it by power management module, and the power management module is connected with power supply adaptor.
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CN108668201A (en) * 2018-08-16 2018-10-16 广东辉杰智能科技股份有限公司 A kind of mobile pull rod speaker with network direct broadcasting pattern
CN108810731A (en) * 2018-09-04 2018-11-13 东莞市艺速电子科技有限公司 Hi-Fi active audio amplifiers
CN110149584A (en) * 2019-06-11 2019-08-20 南华大学 A kind of audio power amplifier

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