CN107396241A - The audio-frequency module of car audio system - Google Patents
The audio-frequency module of car audio system Download PDFInfo
- Publication number
- CN107396241A CN107396241A CN201710471232.9A CN201710471232A CN107396241A CN 107396241 A CN107396241 A CN 107396241A CN 201710471232 A CN201710471232 A CN 201710471232A CN 107396241 A CN107396241 A CN 107396241A
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- CN
- China
- Prior art keywords
- audio
- module
- car
- frequency module
- back cavity
- Prior art date
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- 230000008878 coupling Effects 0.000 claims abstract description 26
- 238000010168 coupling process Methods 0.000 claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 claims abstract description 26
- 230000005236 sound signal Effects 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 6
- 230000037396 body weight Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The present invention provides a kind of audio-frequency module of car audio system, with coupling back cavity, interior space can be saved, mitigate car body weight, and do not limited by installation site, in-car, such as the optional position such as car seat back, steering wheel rear portion, car roof are mountable to, is advantageous to being accurately positioned near field noise reduction in automobile, the Region control of sound field and acoustic image positions；And the uniformity of acoustical behavior between each unit is ensure that, because audio-frequency module has coupled chamber, therefore reduces the vibration effect to body construction.
Description
Technical field
The present invention relates to automotive field, more particularly to a kind of audio-frequency module of car audio system.
Background technology
With the rapid development of automotive electronic technology, on-vehicle information amusement and information communication are just gradually of interest by people.
The audio-frequency module of wherein car audio system plays vital effect.
The phonation unit of the audio-frequency module of existing car audio system needs each independent installation empty with power amplifier unit
Between, it is larger to take interior space；And phonation unit using vehicle body interlayer in itself without coupling back cavity, it is necessary to do back cavity.But by
Different in vehicle body sandwich shape, the uniformity of acoustical behavior is difficult to control；In addition, when phonation unit works, pushed aft
Air-flow be directly passed to vehicle body, it is larger to the vibration effect of body construction；And traditional phonation unit size is larger, installation
Position is restricted, and is unfavorable for the Region control of vehicle interior sound field and being accurately positioned for acoustic image positions, is also unfavorable for utilizing phonation unit
Carry out in-car noise reduction；And traditional phonation unit power consumption is big, it is unfavorable in the system harsh to power consumption requirements such as new energy car
Use.
Therefore, it is necessary to a kind of audio-frequency module of new car audio system is provided to solve the above problems.
The content of the invention
The technical problem to be solved in the invention is to provide a kind of audio-frequency module of car audio system, can save in-car
Space, it is easily installed, ensure that acoustical behavior and power consumption is relatively low.
In order to solve the above technical problems, the invention provides a kind of audio-frequency module of car audio system, including：
Identification module, for carrying out real-time Communication for Power with car audio system, identify the state of audio-frequency module and send and be used for
Represent the signal of audio-frequency module state；
Audio signal reception module, for receiving the audio signal sent from car audio system；
Power amplifier module, it is connected with the audio signal reception module, for amplifying the audio signal reception module
The audio signal received；
Acoustic transducer module, for receiving the audio signal amplified through the power amplifier module, audio signal is turned
Voice signal is turned to send sound；
The acoustic transducer module includes being used for the phonation unit and use that the audio signal is converted into voice signal
Make the coupling back cavity of the operatic tunes of the phonation unit, the phonation unit is installed on the coupling back cavity.
Preferably, the packing material for expanding back cavity acoustic equivalent volume is provided with the coupling back cavity.
Preferably, the coupling back cavity includes the protecgulum and cover plate for surrounding the operatic tunes, is provided with mounting hole on the protecgulum, institute
Phonation unit is stated to be fixed in mounting hole.
Preferably, in addition to the integrated circuit that is sticked on the cover plate, the identification module, the audio signal reception
Module and the power amplifier module are integrated on the integrated circuit.
Preferably, the integrated circuit is housed in the coupling back cavity.
Preferably, filling bag is additionally provided with the coupling back cavity, the packing material is arranged in the filling bag.
Preferably, the filling bag is arranged between protecgulum and the integrated circuit.
Preferably, the audio-frequency module includes the built-in power for powering.
Preferably, the audio-frequency module is powered using external power supply.
Preferably, Audio Signal Processing is also included between the audio signal reception module and the power amplifier module
Module, for optimizing the acoustical behavior of audio-frequency module.
Compared to prior art, the audio-frequency module of car audio system of the invention has coupling back cavity, can save car
Interior space, mitigate car body weight, and do not limited by installation site, be mountable to in-car, such as car seat back, steering wheel
The optional positions such as rear portion, car roof, be advantageous to the accurate fixed of near field noise reduction in automobile, the Region control of sound field and acoustic image positions
Position；And the uniformity of acoustical behavior between each unit is ensure that, because audio-frequency module has coupled chamber, therefore is reduced to car
The vibration effect of body structure, and power consumption can be reduced, Consumer's Experience is good.
Brief description of the drawings
Fig. 1 is the structural representation of the audio-frequency module of car audio system of the present invention；
Fig. 2 is the principle schematic of the first embodiment of the audio-frequency module of car audio system of the present invention；
Fig. 3 is the principle schematic of second of embodiment of audio-frequency module of car audio system of the present invention.
Embodiment
Below in conjunction with drawings and embodiments, the invention will be further described.
Embodiment one
Shown referring to Figures 1 and 2, the present invention provides a kind of audio-frequency module of car audio system, specifically includes identification mould
Block 1, audio signal reception module 2, power amplifier module 3 and acoustic transducer module 4.
Wherein identification module 1 is used to carry out real-time Communication for Power with car audio system, specially sends and represents audio-frequency module shape
Whether the signal of state, distributing position of the instruction audio-frequency module in automobile and access car audio system.Car audio system root
According to result of communication, audio-frequency module audio signal is sent to.
Audio signal reception module 2 is used to receiving the audio signal that is sent from car audio system, and by the audio of reception
Signal is transmitted to power amplifier module and is amplified.Its transmission means can use wire transmission, can also use and be wirelessly transferred
Mode.
Power amplifier module 3 receives the audio signal that audio signal reception module 2 receives, and is amplified, and is transferred to
Acoustic transducer module 4 is used for sounding.
Acoustic transducer module 4 is used to receive the audio signal after by power amplifier module 3 being amplified, and electric signal is turned
Acoustical signal is changed into send to automobile inner region.
Wherein, acoustic transducer module 4 includes phonation unit 41 and coupling back cavity 42.After phonation unit 41 is installed on coupling
An independent operatic tunes is formed on chamber 42, can so save interior space, mitigates car body weight, and not by installation site
Limitation, it is mountable to in-car any position and ensure that the uniformity of acoustical behavior between each unit, because audio-frequency module has
There is coupled chamber, therefore reduce the vibration effect to body construction.Further, the audio-frequency module of car audio system of the present invention
Also include the integrated circuit 5 being arranged in coupling back cavity 42.Identification module 1, audio signal reception module 2 and power amplifier module
3 are integrated on the integrated circuit 5.
Coupling back cavity 42 is surrounded by protecgulum 421 and cover plate 422, and wherein protecgulum 421 includes bottom wall and bent from bottom wall to extend
Side wall, cover plate 422 lid be connected in side wall, so as to form sound of the inner space of a relative closure as phonation unit 41
Chamber.Integrated circuit 5 is sticked on cover plate 422.
In the present embodiment, protecgulum 421, specially it is provided with the bottom wall of protecgulum 421 for installing phonation unit
Mounting hole.Phonation unit 41 is oppositely arranged with mounting hole, specifically, phonation unit 41 and the mounting means for coupling back cavity 42
For fitted outside, rear-loading type or inserted.I.e. phonation unit 41 can be wholly or partially embedded into coupling back cavity 42, can also be with coupling
Close back cavity 42 side by side and be oppositely arranged, be coupled as long as can realize with coupling back cavity 42, be both to implement.
The packing material for expanding back cavity acoustic equivalent volume is additionally provided with coupling back cavity 42, in present embodiment
In, packing material is set in the form of filling bag 423.In the present embodiment, filling bag is arranged on 421 protecgulums and integrated circuit
Between 5.Certainly, in selectable other embodiment, filling bag 423 can also be arranged on other positions, or can also
Filling bag is not provided with, packing material is filled in the form of powdered in coupling back cavity, and can implement.
The audio-frequency module of the present invention can use the power supply mode of external power supply, can also use and set built-in power,
Such as the power supply mode of internal battery.
Embodiment two
Reference picture 3, it is another embodiment of the present invention, it is roughly the same with the first embodiment, including identification mould
Block 1, audio signal reception module 2, power amplifier module 3 and acoustic transducer module 4.Differ only in, in present embodiment
In, audio-frequency signal processing module 6 is also included between audio signal reception module 2 and power amplifier module 3, for optimizing audio mould
The acoustical behavior of block.
The Audio Signal Processing that wherein audio-frequency signal processing module 6 is carried out can be the performance for acoustic transducer module
Optimization, such as frequency response, distortion compensation etc., or optimize for the performance of vehicle interior sound field, such as the adjustment of sound field, acoustic image, master
Dynamic noise reduction etc..
Power amplifier module 3 is transferred to after optimization by the acoustical behavior of audio-frequency signal processing module 6 to amplify, can be with
Obtain more preferable acoustical behavior and Consumer's Experience.
Compared to prior art, the audio-frequency module of car audio system of the invention has coupling back cavity, can save car
Interior space, mitigate car body weight, and do not limited by installation site, be mountable to in-car, such as car seat back, steering wheel
The optional positions such as rear portion, car roof, be advantageous to the accurate fixed of near field noise reduction in automobile, the Region control of sound field and acoustic image positions
Position；And the uniformity of acoustical behavior between each unit is ensure that, because audio-frequency module has coupled chamber, therefore is reduced to car
The vibration effect of body structure, and power consumption can be reduced, Consumer's Experience is good.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
- A kind of 1. audio-frequency module of car audio system, it is characterised in that including：Identification module, for carrying out real-time Communication for Power with car audio system, identify the state of audio-frequency module and send for representing The signal of audio-frequency module state；Audio signal reception module, for receiving the audio signal sent from car audio system；Power amplifier module, it is connected with the audio signal reception module, is received for amplifying the audio signal reception module The audio signal arrived；Acoustic transducer module, for receiving the audio signal amplified through the power amplifier module, audio signal is converted into Voice signal is to send sound；The acoustic transducer module includes being used to the audio signal being converted into the phonation unit of voice signal and as institute The coupling back cavity of the operatic tunes of phonation unit is stated, the phonation unit is installed on the coupling back cavity.
- 2. the audio-frequency module of car audio system according to claim 1, it is characterised in that set in the coupling back cavity There is the packing material for expanding back cavity acoustic equivalent volume.
- 3. the audio-frequency module of car audio system according to claim 2, it is characterised in that the coupling back cavity includes enclosing Into the protecgulum and cover plate of the operatic tunes, mounting hole is provided with the protecgulum, the phonation unit is fixed in the mounting hole.
- 4. the audio-frequency module of car audio system according to claim 3, it is characterised in that also include being sticked in the lid Integrated circuit on plate, the identification module, the audio signal reception module and the power amplifier module are integrated in described On integrated circuit.
- 5. the audio-frequency module of car audio system according to claim 4, it is characterised in that the integrated circuit is housed in In the coupling back cavity.
- 6. the audio-frequency module of car audio system according to claim 5, it is characterised in that also set in the coupling back cavity Filling bag is equipped with, the packing material is arranged in the filling bag.
- 7. the audio-frequency module of car audio system according to claim 6, it is characterised in that before the filling bag is arranged on Between lid and the integrated circuit.
- 8. the audio-frequency module of car audio system according to claim 1, it is characterised in that the audio-frequency module includes using In the built-in power of power supply.
- 9. the audio-frequency module of car audio system according to claim 1, it is characterised in that the audio-frequency module uses outer Connect power supply power supply.
- 10. the audio-frequency module of car audio system according to claim 1, it is characterised in that connect in the audio signal Receive also includes audio-frequency signal processing module between module and the power amplifier module, for optimizing the acoustics of audio-frequency module Energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471232.9A CN107396241A (en) | 2017-06-20 | 2017-06-20 | The audio-frequency module of car audio system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710471232.9A CN107396241A (en) | 2017-06-20 | 2017-06-20 | The audio-frequency module of car audio system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107396241A true CN107396241A (en) | 2017-11-24 |
Family
ID=60332474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710471232.9A Withdrawn CN107396241A (en) | 2017-06-20 | 2017-06-20 | The audio-frequency module of car audio system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107396241A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109218896A (en) * | 2018-08-09 | 2019-01-15 | 瑞声科技(新加坡)有限公司 | Car audio system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202310027U (en) * | 2011-11-16 | 2012-07-04 | 深圳市德力凯电子有限公司 | Horn device preventing horn from causing cabinet resonance |
| CN203072111U (en) * | 2013-01-13 | 2013-07-17 | 黄钦祥 | Volume-variable sound box for automobile |
| CN104837089A (en) * | 2015-04-30 | 2015-08-12 | 成都锐奕信息技术有限公司 | Sound emitting structure of wireless positioning terminal |
| CN204775019U (en) * | 2015-07-07 | 2015-11-18 | 覃全图 | Car seat bass big gun of harmless repacking |
-
2017
- 2017-06-20 CN CN201710471232.9A patent/CN107396241A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202310027U (en) * | 2011-11-16 | 2012-07-04 | 深圳市德力凯电子有限公司 | Horn device preventing horn from causing cabinet resonance |
| CN203072111U (en) * | 2013-01-13 | 2013-07-17 | 黄钦祥 | Volume-variable sound box for automobile |
| CN104837089A (en) * | 2015-04-30 | 2015-08-12 | 成都锐奕信息技术有限公司 | Sound emitting structure of wireless positioning terminal |
| CN204775019U (en) * | 2015-07-07 | 2015-11-18 | 覃全图 | Car seat bass big gun of harmless repacking |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109218896A (en) * | 2018-08-09 | 2019-01-15 | 瑞声科技(新加坡)有限公司 | Car audio system |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171124 |