CN106535063B - A kind of wireless network audio high-fidelity streaming media playing machine - Google Patents
A kind of wireless network audio high-fidelity streaming media playing machine Download PDFInfo
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- CN106535063B CN106535063B CN201710023303.9A CN201710023303A CN106535063B CN 106535063 B CN106535063 B CN 106535063B CN 201710023303 A CN201710023303 A CN 201710023303A CN 106535063 B CN106535063 B CN 106535063B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit 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
Abstract
The invention discloses a kind of wireless network audio high-fidelity streaming media playing machines, including the host pcb board inside trapezoid player is arranged in, the trapezoid player includes the ultralow tone chamber that its bottom end is arranged in, and DSP data processing module and the lossless audio decoding unit being attached thereto respectively, DAC conversion module and virtual bass module are integrated on the host pcb board；The lossless audio decoding unit connects input module；The DAC conversion module is connected with audio frequency processing circuit, full range digital power amplifier and full frequency speaker in turn；The virtual bass module is sequentially connected low-pass filter circuit and supper bass digital power amplifier, and the supper bass digital power amplifier is connect with the woofer that ultralow tone chamber side is arranged in；The DAC conversion module connects the virtual bass module.Trapezoid acoustic structure of the present invention, circuit design are designed in conjunction with ultralow tone chamber, and the present invention is made to realize high-fidelity music center effect.
Description
Technical field
The present invention relates to the equipment based on internet stream media music and mobile device audio playback, in particular to one
Kind wireless network audio high-fidelity streaming media playing machine can individually be worked with 2.1 sound channels or wirelessly be combined by two like products
It is played at 2.2 sound channels.
Background technique
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 of mobile device, which plays part receptor product, to be influenced, and audio external play is limited to, though it can also be enjoyed with earphone
By good sound quality, 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 obviously inconvenient, and various connecting lines also will affect the beauty in room, in addition, traditional sound equipment
Playing source of sound is CD, DVD, VCD, etc. optical discs, some have FM/AM radio, the machine of early stage also has deck, existing prevalence band
There are USB, card reader, iPod etc., this mode is obviously a kind of out-of-date music listening mode, and various music film sources are unfavorable
In storage, singer is selected to search the film source of storage also and its inconvenient.In the Internet resources epoch abundant, cloud will almost own
Singer's song of publication and distribution deposits in internet, is the main side for listening to music people's future by intelligent sound request music
One of formula.
Everyone is playing life well with the mode of oneself to today's society, pursues fashion with the step of oneself, abundantly enjoys
The life of various digital entertainments, parlor, bedroom, study require the digital audio equipment of a set of modernization, it should have section
Skill sense has again and exhales perfect sound quality to the greatest extent, also to use simply.It is well known that high-fidelity music center refers to that CD+ simulates Class A function
It puts or the combination of electronic tube power amplifier+Hi-Fi sound-box, market price is up to ten thousand to hundreds of thousands yuan.
Summary of the invention
Based on the deficiencies of the prior art, the object of the present invention is to provide a kind of structurally reasonable, compact, integrate
Digital intelligent wireless network audio high-fidelity streaming media playing machine realizes high-fidelity music center effect with lower cost.
To achieve the above object, the technical solution of the present invention is as follows:
A kind of wireless network audio high-fidelity streaming media playing machine, it is characterised in that: including being arranged in trapezoid player
Internal host pcb board, the trapezoid player includes the ultralow tone chamber that its bottom end is arranged in, and is collected on the host pcb board
At the lossless audio decoding unit, DAC conversion module and virtual bass list for having DSP data processing unit and being attached thereto respectively
Member；The lossless audio decoding unit connects input module；The DAC conversion module is connected with audio frequency processing circuit, complete in turn
Frequency digital power amplifier and full frequency speaker；The virtual bass unit is sequentially connected low-pass filter circuit and supper bass digital power amplifier,
The supper bass digital power amplifier is connect with the woofer that ultralow tone chamber side is arranged in；The DAC conversion module connects institute
State virtual bass unit.
Further, the subwoofer chamber interior is additionally provided with air balance barrier pipe device and the bending gas with external world's ventilation
The ipsilateral top of loudspeaker is arranged in flow tube, the air balance barrier pipe device, and the bending pipe setting hinders in air balance manages
The top of device opposite side, interior 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 that WIFI module, FM radio module, bluetooth module, USB interface, TF card connect
Mouthful, one of AUX interface or microphone input or any combination it is a variety of.
Further, the DSP data processing unit is connected with control unit, and described control unit is connected with WIFI mould
One of block, FM radio module, bluetooth module, display screen or push-button unit are a variety of.
Further, the DSP data processing unit is also connected with light control unit, the light control unit 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 foot of inverted trapezoidal, the shockproof footmuff of inverted trapezoidal
Equipped with shock callus.
Further, the trapezoid player in pairs using, be spaced apart, one for playing audio L channel, one
It is a to be used to play audio right channel.
Further, related modular circuit is powered for it by power management module, the power management module connection
There is power supply adaptor.
The invention has the benefit that 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 loundspeakers of wifi module, bluetooth module, DSP and digital power amplifier, power management etc. are realized with lower cost
The function of internet high-fidelity music center substitutes the high-fidelity music centers of several combinations of tradition, realizes the high-fidelity music center common people
Change；
Make audio effect processing using built-in DSP when USB, TF card playing stream media music, the Streaming Media music of magnanimity is allowed to reach
To or surmount CD Quality；
The design of subwoofer cell structure, makes sound chamber low frequencies rate reach 90%, is conducive to improve market major part acoustic product
The inadequate defect of low frequency；
There is light emitting device inside balance barrier pipe, facilitate user not have to turn on light when listening to music at night, substitute room
Background light；
Trapezoidal vibration abatement solves the uniform resonance problems of cabinet, avoids the playback distortion that cabinet vibration generates.
Detailed description of the invention
Fig. 1 is the circuit structure block diagram of the specific embodiment of the invention；
Fig. 2 is the DSP data processing unit circuit diagram of the specific embodiment of the invention；
Fig. 3 is the virtual bass unit circuit diagram of the specific embodiment of the invention；
Fig. 4 is the low-pass filtering and supper bass digital power amplifier circuit diagram of the specific embodiment of the invention；
Fig. 5 is the player structural schematic diagram of the specific embodiment of the invention；
Fig. 6 is the player decomposition texture schematic diagram of the specific embodiment of the invention；
Fig. 7 is the T7-15X primitive curve figure of the specific embodiment of the invention；
Fig. 8 is the T7-15X frequency spectrum adjustment point schematic diagram of the specific embodiment of the invention；
Fig. 9 be the specific embodiment of the invention T7-15X Digital Signal Processing after do not open VB curve synoptic diagram；
Figure 10 be the specific embodiment of the invention T7-15X Digital Signal Processing after have turned on VB curve synoptic diagram；
Figure 11 is that the T7-15X frequency spectrum point of the specific embodiment of the invention increases and decreases parameter list figure；
Figure 12 is the T7-15X VB parameter list figure of the specific embodiment of the invention.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.
As shown in Figure 1, a kind of wireless network audio high-fidelity streaming media playing machine, including be arranged in trapezoid player
The host pcb board in portion, the trapezoid player include the ultralow tone chamber that its bottom end is arranged in, and are integrated on the host pcb board
Lossless audio decoding unit, the 44.1KHz DAC conversion module and virtual low for having DSP data processing unit and being attached thereto respectively
Sound unit；The lossless audio decoding unit connects input module；The DAC conversion module is connected with audio processing electricity in turn
Road, full range digital power amplifier and full frequency speaker；The virtual bass unit is sequentially connected low-pass filter circuit and supper bass number
Power amplifier, the supper bass digital power amplifier are connect with the woofer that ultralow tone chamber side is arranged in；The DAC conversion module connects
Connect the virtual bass unit.
The input module includes WIFI module, FM radio module, bluetooth module, USB interface, TF card interface, AUX interface
Or one of microphone input or any combination is a variety of.
The DSP data processing unit is also connected with light control unit, and the light control unit is connected with light drive
Dynamic circuit.
As shown in Fig. 2, the present embodiment DSP data processing unit circuit diagram, Fig. 3 is the virtual bass list of the present embodiment
First circuit diagram, Fig. 4 are low-pass filtering and supper bass digital power amplifier circuit diagram, the virtual end bass circuit module DAC-L
It is connect with the end DAC-R with DAC conversion circuit, the output end of virtual bass unit circuit, the i.e. end SUB-OUT are with low-pass filtering and again
The end SUB-OUT of bass digital power amplifier circuit connects, and low-pass filtering is connected with the end AUDIO-SD of supper bass digital power amplifier circuit
The end AUDIO-SD of DSP data processing unit circuit.
The lossless audio decoding unit is connected with reverberation unit, and the reverberation unit is connected with Microphone for karaoke interface.
Related modular circuit is powered for it by power management module, and the power management module is connected with power adaptation
Device.
Wifi mould group can upload and download signal for the core for accessing internet, and combination left and right acoustic channels audio signal
Access.
Bluetooth mould group aims at and is wirelessly connected broadcasting sound with mobile device and the present embodiment under no wifi network environmental condition
Happy facility.
FM frequency modulation reception module aims 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 interface can play the music of MP3 music and lossless format by TF card.
AUX route input interface, can external other audio frequency apparatuses.
Microphone input can input search radio station and song with voice in wifi state, also can be used as the following Internet of Things system
Language in-put of uniting controls household electrical appliance, and when bluetooth state can realize hand-free call, uses as conference system.
LED display, can the information such as display function state and time.
The key of the present embodiment is that eight function buttons, wherein switching on and shutting down and broadcasting suspend a shared key；Function switch
User is facilitated to convert more kind function；Volume+, volume-and the forward bent two keys multiplexing of jump backward；One key of phonetic search, by one
This lower key says that the content to be looked for self, system find in a network and play from function against sound equipment；Network radio station can at most prestore
6, pass through 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 conversion module is sent.
Digital power amplifier amplifies the audio signal that audio frequency processing circuit is sent.
Full range unit restores the audio electrical signal physics that audio frequency processing circuit is sent, resets out full range music.
Second-order low-pass filter, the low frequency signal of reductase 12 0Hz to 150Hz.
Digital power amplifier carries out the amplification of D class to the signal that low-pass filter circuit is sent.
Supper bass unit, the low frequency signal physics sent to supper bass digital power amplifier module restore, and reset out pure low
Frequency music and the overlapping of the full range music of full frequency speaker.
Electric power management circuit can effectively support external adapter heat to insert heat and dial, 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 requirement, stand-by power consumption only has microampere order.
External power supply adapter provides electric energy for complete machine, meets the requirement of six grades of efficiencies.
The present embodiment uses large scale integrated circuit as central processing unit, DSP data processing and algorithm process, control unit
Each peripheral unit is controlled and communicated, lossless audio decoding unit is to WIFI module, FM radio module, bluetooth module, USB
Interface, TF card interface, AUX interface or microphone voice data stream be decoded, and support lossless music format, system allowed to reach
To CD Quality standard, completes decoded signal and send to the progress data processing of DSP data processing unit and algorithm process, processing is completed
The digital analog converter to DAC conversion module is sent to generate high fidelity simulation signal all the way afterwards, the sample rate of DAC modulus of conversion design is reachable
To 48KHz, the sample rate of the present embodiment is 44.1KHz, it is therefore an objective to it is identical as CD sample frequency, it is horizontal to reach CD Quality.It is another
The mega bass for fictionalizing purer 20Hz to 150Hz is sent to virtual bass (VB) on road, the exportable clear stereo of DAC,
Also exportable independent right channel or left channel signals.Digital reverberation generative circuit, produce reverberation sound after and lossless audio decoding
OK a karaoke club ok function is realized in the former mixture of tones that unit is decoded, and LED light optical controller can produce seven, it can be achieved that three primary colours adjustment
Color lamp light and breath light effect.
As shown in Figure 5 and Figure 6, the physical structure of the present embodiment fully complies with acoustical demands, the cabinet design of positive tower, weight
Bass unit is installed on the bottom of box, and four 2.75 inches of full range intermediate frequencies clamp a 20 core filaments film high pitchs, ensure that playback frequency
Ring all standing from 20Hz to 22KHz, according to the principle that high frequency delivery rate is relatively fast, low frequency transmit it is relatively slow, it is trapezoidal to set
Meter ensure that six unit sounding focusing synchronous, allows listener that can feel that sound is synchronous sending, solves low-and high-frequency
Delay effect problem.Box part structure is as follows:
Optical filtering PVC piece 1, display screen and infrared receiver position are golden steel transparent black, can effectively allow display screen display effect
It is bright, and display color will not have color difference.Panel 2, display screen, eight keys 3 and remote control reception window, electret microphone all fill
It is placed on panel.Key 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
Power amplifier output end.4 2.75 cun of loudspeaker covers 6, guarantee is rakish simultaneously, and bell shape has amplification to sound.
Cortina high pitch 7, series connection frequency dividing capacitor are connected with host power amplifier.Cortina high pitch panel 8, bell shape, which focuses high pitch, amplifies,
Ensure high pitch accurate positioning.Prefocus cup 9 is connected to external warranty light homogeneous and bright with light shelter 11 and is packed into box house
Barrier pipe effect between super bass box unit and phase-reversing tube, increases the acoustic pressure of box house, does not allow the air-flow at unit rear portion straight
Corresponding phase-reversing tube inner opening is connect, efficiently solves the problems, such as that most of inverted phase type opening boxes have been easy phase-reversing tube airflow noise, Ke Yirang
Speaker bass is pure.LED light pcb board 10 is connected with host light driving circuit, generates seven color and breathing light, allows the present invention
With acousto-optic integrated, the use of room night-luminescent lamp also can be used as.Light shelter 11 plays focusing light effect.Optical filter 12 has filter to luminous tube
Light action avoids strong light from hurting eye.6.5 cun of loudspeaker covers 13 modify bass by inside trumpet shape while decoration function, allow sound
It is purer.6.5 cun of bass units 14 are connected with the output of motherboard supper bass.Top light filter glass 15 guarantees that light is uniform
While play eyeshield.Display screen 16, top LED light and infrared remote receiver and Electret condenser microphone pcb board, LED light are speaker
Back light source, display screen display working condition and temporal information, infrared receiver are long-range control entrance, and Electret condenser microphone is blue
Words input is proposed to be hands-free when tooth, is inputted for voice control when wifi, this plate is connected with host-dependent interface.Back plate PVC piece 17, respectively
Input port USB, TF card, AUX are integrated at this position.Mainboard PCB fixes panel 18, exempts from screw installation using plug-in type.Host PC B
Plate 19, all modules and component are all integrated on one block of plate, and installation is simple, convenient for safeguarding.Host PC B fixes tabletting 20, uses
Two screws and 18 are installed together, fixed pcb board.Curved phase-reversing tube 21 gives the paraphase of low frequency sound equipment, reaches the mesh of enhancing bass
, the straight-through air blowing sound of few air is felt in bending design, can also effectively enhance the compressing force of air, make low frequency stronger.DC power supply
Input interface 22 is powered to complete machine.Wooden case 23, the supporting element of whole part and the sound chamber of each unit.4 inverted trapezoidals are shockproof
Foot 24, inverted trapezoidal design, landing fulcrum become smaller, and reduce the friction of cabinet itself vibration and ground.4 spherical surface quakeproof rubber pads, and
24 are combined together, and the damping device effect for surmounting the high-fidelity music center of high cost is realized with lower cost, spherical shockproof
Ground contact points are small, and have certain soft, and speaker can buffer shake power when vibrating, and the present embodiment can be effectively equal by cabinet resonance
Even shield dissipates, and solves the playback distortion that cabinet vibration generates.
The wider the Hz-KHz of high-fidelity music center the better, but must also be flat just significant, and 20Hz to 22KHZ two
The attenuation at end cannot be greater than 3dB.Because the every difference 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, again without apparent peak valley, and it is just significant that the decaying of two end of frequency response reaches minimum value.
In view of the practical environment for listening to music at home of user is ever-changing, the present embodiment carries out frequency spectrum in ultralow tone chamber
The adjustment and actual measurement of curve are 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 section of digital signal respectively, the electricity of setting and different frequency to electric signal amplification quantity
The adjusting of signal compensates the defect of 6 loudspeakers and cabinet sound field of the present embodiment, play compensation and the various sound sources of modification and
Its special role.
The whole circuit of high low pitch or balanced device of generally conventional high-fidelity music center 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 element can carry out 8 sections to full frequency band
The frequency point defect mending of point, carries out frequency upgrading or reduction, the adjustment of multifrequency point, the range and details of adjustment become apparent from, more sharp
In realization hi-fi reproduction, and the present embodiment is total digitalization repairing defect and adjusting, has and adjusts flexibly, and precision is high, stablizes
Type is strong, small in size, the advantages such as energy conservation.
Virtual bass (VB) generator in the virtual bass unit of the present embodiment is to be believed by algorithm in full frequency band number
Effective low frequency signal is extracted in number, the super low sound signal overlapping for recycling digital second order filter to extract 20Hz-150Hz is attached to
On the 80Hz frequency point of full range curve, after virtual bass is added, low frequency sensitivity can increase 1dB or more, no matter from sense of hearing, amount sense and
There is further improvement in texture, due to adding for VB signal, the sensitivity of full frequency band also can be with rear class sample rate
44.1KHz digital analog converter increases after making corresponding conversion, digital power amplification.
The present embodiment volume is set as 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 been more than the standard of high-fidelity, is not necessarily to
Low frequency is supplemented on the frequency point of 80Hz again, virtual bass (VB) numerical value can be automatically set as " 0 ", but virtual bass processor is not
It closes, modification only at this moment is played to other frequency range audios.
Fig. 7 is the frequency that the present embodiment is surveyed when being not switched on data processor and virtual bass processor in semi-anechoic room
Curve graph, test source of sound are the 20Hz -22KHz standard full range swept-frequency signal and pink noise signal of international standard, Cong Tuke
To find out, when digital processing is not added, though frequency response width meets the requirements, paddy crest is obvious and each frequency point between it is uneven.
Fig. 8 is the frequency curve waveform diagram that the present embodiment prepares adjustment, intends adjusting 8 nodes, adjusting parameter is shown in Figure 11.
Figure 11 is the parameter of frequency spectrum point modification, these parameters are bent according to the actual measurement of unit (loudspeaker) and cabinet sound chamber
Line, what comprehensive parameters were formulated, this parameter reaches optimal acoustics after being only adapted to the present embodiment combination.
Fig. 9 is to be not added with the curve graph for considering quasi- bass (VB), and as mentioned in figure one, Cong Tuke is seen test condition
Out, frequency curve is substantially steady, and paddy peak effect thoroughly loses, and sense of hearing and texture, amount sense have obviously reached high-fidelity requirement,
But overall sensitivity is to be improved, and for low frequency 60Hz to 120Hz there are also relatively small paddy peak, high frequency 12KHz or more is also not flat enough.
Figure 10 is the curve graph for virtual bass (VB) processor being opened actual measurement, one mentioned in test condition and figure one
Sample.It can be seen that from figure, after VB is opened, full range curve is in Yu Pingtan substantially, and low frequency Gu Fengyi loses, and high frequency also has larger improvement,
Especially sensitivity has greatly improved, and minimum point has all reached 85db, and high frequency part has reached 90db, had reached height substantially
The curve requirement of fidelity sound equipment, sense of hearing also obtain the change of matter.
Figure 12 is virtual bass (VB) numerical value, and the present embodiment is set as 32 sections in total volume, when volume is up to 50% i.e. VOL > 16,
Bass virtual value increased value on 80Hz frequency point is " 0 ", but virtual bass processor is not off.As 10≤VOL≤16,
Bass virtual value increased value on 80Hz frequency point is " 5% ", and as VOL < 10, bass virtual value is increased on 80Hz frequency point
Value is " 10% ", this ensure that the present embodiment also ensures that low frequency reproduction has preferable effect when small volume listens to music.
Science and technology development and digitized revolution, lower cost realize popular digital intelligent high-fidelity music center become can
Can, the design of reasonable physical acoustics sound chamber, data DSP application, totally digitilized voicefrequency circuit, 2.4G/5G modularized design and excellent
Elegant power management, these are all the bases of modern High-fidelity sounder design.Furthermore modernize high-fidelity music center and the high guarantor of tradition
True sound equipment compares, and advantage is it is clear that more importantly modernization high-fidelity music center, which has abandoned traditional high-fidelity music center, wants more
Just workable old thinking, digitized process play modernization high-fidelity music center by source of sound after part machine assembly, audio
It handles (DSP), together with power amplifier is fully integrated with sound chamber and power management, eliminates suit high-fidelity music center at least
Three enclosure chassis and power supplys.Under the premise of same sound quality and audio, money needed for manufacturing based on digital intelligence high-fidelity music center
Source type raw material such as shell steel plate, 1/10th of dosage less than traditional high-fidelity music center of power transformer copper wire etc.,
This is very favourable to the national conservation-minded society advocated and " energy conservation row subtracts ".
It should be noted that described above is presently preferred embodiments of the present invention, the invention is not limited to above-mentioned
Embodiment all should belong to protection scope of the present invention as long as it reaches technical effect of the invention with identical means.
Claims (9)
1. a kind of wireless network audio high-fidelity streaming media playing machine, it is characterised in that: including being arranged in trapezoid player
The host pcb board in portion, the trapezoid player include the ultralow tone chamber that its bottom end is arranged in, and are integrated on the host pcb board
Lossless audio decoding unit, DAC conversion module and the virtual bass unit for having DSP data processing unit and being attached thereto respectively,
The virtual bass unit includes virtual bass generator, the virtual bass generator, for passing through algorithm in full range number of segment
Effective low frequency signal is extracted in word signal, the super low sound signal overlapping for recycling digital second order filter to extract 20Hz-150Hz is attached
It is added on the 80Hz frequency point of full range curve；The lossless audio decoding unit connects input module；The DAC conversion module is successively
It is connected with audio frequency processing circuit, full range digital power amplifier and full frequency speaker；The virtual bass unit is sequentially connected low-pass filtering
Circuit and supper bass digital power amplifier, the supper bass digital power amplifier are connect with the woofer that ultralow tone chamber side is arranged in；
The DAC conversion module connects the virtual bass unit；The subwoofer chamber interior is additionally provided with air balance barrier pipe device
With the bending gas flow tube with external world's ventilation, the ipsilateral top of loudspeaker, the bending is arranged in the air balance barrier pipe device
The top of air balance barrier pipe device opposite side is arranged in pipe, and interior port and the air balance barrier pipe device of bending pipe are correspondingly arranged.
2. wireless network audio high-fidelity streaming media playing machine as described in claim 1, it is characterised in that: the air balance
Hindering pipe device includes prefocus cup and light shelter.
3. wireless network audio high-fidelity streaming media playing machine as described in claim 1, it is characterised in that: the input module
Including one of WIFI module, FM radio module, bluetooth module, USB interface, TF card interface, AUX interface or microphone input
Or any combination is a variety of.
4. wireless network audio high-fidelity streaming media playing machine as described in claim 1, it is characterised in that: the DSP data
Processing unit is connected with control unit, and described control unit is connected with WIFI module, FM radio module, bluetooth module, display screen
Or one of key or a variety of.
5. wireless network audio high-fidelity streaming media playing machine as described in claim 1, it is characterised in that: the DSP data
Processing unit is also connected with light control unit, and the light control unit is connected with light driving circuit.
6. wireless network audio high-fidelity streaming media playing machine as described 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.
7. wireless network audio high-fidelity streaming media playing machine as described in claim 1, it is characterised in that: the trapezoid is broadcast
The bottom for putting machine is provided with the shockproof foot of inverted trapezoidal, and the shockproof footmuff of inverted trapezoidal is equipped with shock callus.
8. wireless network audio high-fidelity streaming media playing machine as described in any one of claim 1 to 7, it is characterised in that: institute
State trapezoid player in pairs using, be spaced apart, one for playing audio L channel, one for playing the right sound of audio
Road.
9. such as wireless network audio high-fidelity streaming media playing machine as claimed in any one of claims 1 to 6, 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 |
| CN108810731B (en) * | 2018-09-04 | 2021-04-23 | 东莞市艺速电子科技有限公司 | Hi-Fi active speaker |
| CN110149584A (en) * | 2019-06-11 | 2019-08-20 | 南华大学 | A kind of audio power amplifier |
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| US8984501B2 (en) * | 2009-06-19 | 2015-03-17 | Dolby Laboratories Licensing Corporation | Hierarchy and processing order control of downloadable and upgradeable media processing applications |
| CN204180223U (en) * | 2014-10-22 | 2015-02-25 | 深圳市瀚宏数码科技有限公司 | A kind of have the audio amplifier of 3D around entity audio |
| CN204681574U (en) * | 2015-06-10 | 2015-09-30 | 广州市松雅音响设备有限公司 | A kind of high-fidelity wifi sound equipment |
| CN205622838U (en) * | 2016-03-16 | 2016-10-05 | 广州坚立音响器材有限公司 | High -fidelity bluetooth sound |
| CN206313981U (en) * | 2017-01-12 | 2017-07-07 | 珠海乐港科技有限公司 | A kind of wireless network audio high-fidelity streaming media playing machine |
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2017
- 2017-01-12 CN CN201710023303.9A patent/CN106535063B/en active Active
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