CN203167229U - Vehicle interior sound field equalization device - Google Patents
Vehicle interior sound field equalization device Download PDFInfo
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- CN203167229U CN203167229U CN 201320150982 CN201320150982U CN203167229U CN 203167229 U CN203167229 U CN 203167229U CN 201320150982 CN201320150982 CN 201320150982 CN 201320150982 U CN201320150982 U CN 201320150982U CN 203167229 U CN203167229 U CN 203167229U
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Abstract
The utility model relates to a vehicle interior sound field equalization device and especially discloses a vehicle interior sound field intelligent equalization device. The vehicle interior sound field equalization device comprises a loudspeaker array having a plurality of loudspeaker units arranged on a plurality of positions inside a vehicle and used for emitting sound information to the space inside the vehicle; a microphone array having at least one microphone unit arranged inside an area to be equalized and used for picking up information about a sound field formed by the superposition of the loudspeaker units and further converting the sound field information into electric signals; a sound field equalization processor having an input end correspondingly connected with the output end of the microphone unit; and a multi-track power amplifier having an input end connected with the output end of the sound field equalization processor. The output end of the multi-track power amplifier is connected with the loudspeaker array. The multi-track power amplifier drives the loudspeaker units to perform electroacoustic conversion.
Description
Technical field
The utility model relates to a kind of vehicle interior sound field balancer, particularly a kind of intelligent balancer of vehicle interior sound field.
Background technology
Raising along with social living standard, automobile industry expands rapidly, and the automobile sales volume increases fast, has changed occasion and the custom of people's music appreciatings, most people will drive and by bus during the music appreciating works, this has promoted the quality requirements of people to sound reproduction in the car.Interior space is narrow and small, loudspeaker unit is more, after each loudspeaker unit is installed to assigned address, needs the sound field commissioning staff to spend equilibrium debugging and audition evaluation and test that more time and energy are finished vehicle interior sound field.Under narrow and small environment inside car, it is less that loud speaker is radiated hearer's direct sound wave, most sound fields that the hearer experiences come from the formed sound field of reflected sound, this acoustic environment of being dominated by reflected sound, its sound field debugging is very complicated, often needs repeatedly test repeatedly and audition constantly to adjust the equalization processor parameter to reach the gratifying low voice speaking effect of putting.
Fast development along with Digital Signal Processing and very large scale integration technology, many researchers tend to that this heavy sound field debugging task is transferred to computer and finish, by designing the sound field equalization algorithm of intelligence, computer will be finished the equalization operation task to the time-domain pulse response under the specific acoustic environment and the response of frequency domain power spectrum automatically, this has simplified the sound field debug process, has also saved workload and the operating time of audio engineer.At present, existing sound field automatic equalization product all is positioned at the sound field automatic equalization in the room on the market, and these existing sound field automatic equalization products comprise: Co., Ltd is just so summoned based on CONEQ in the Hong-Kong
TM
The speaker system of technology response equalization processor, Sweden Dirac Research AB company based on the room sound field equalization processor of Dirac Live technology, Denmark Lyngdorf Audio company based on the room sound field equalization processor of Room Perfect technology and the U.S. KRK company room sound field balanced product based on the Ergo technology.CONEQ
TM
Technology is by microphone is slipped over the radiating surface in single sound equipment dead ahead gradually to finish the automatic equalization to single sound equipment radiated sound field according to snakelike wiring path.Dirac Live technology, Room Perfect technology and Ergo technology all are the low voice speaking environment of putting at a plurality of audio amplifiers in the room, adopt the single microphone automatic equalization task of sound field in the mode of a plurality of location points in space place sampling is finished the room successively.
Existing sound field automatic equalization product all is at sound field algorithm for design in the room, but low voice speaking in the room put environment and the low voice speaking environment of putting of Che Nei has tangible difference, sound playback time in the room, the space is bigger, and direct sound wave is more, and the reflected sound composition does not account for Main Ingredients and Appearance in sound field makes up, and the low voice speaking environment of putting in the car, the space is narrow and small, and direct sound wave is less, and the reflected sound composition accounts for Main Ingredients and Appearance in sound field makes up.These are at room sound field designed automatic equalization algorithm and product, be only applicable to the sound field equilibrium that direct sound wave accounts for Main Ingredients and Appearance, account at reflected sound on the vehicle interior sound field equalization problem of Main Ingredients and Appearance and will obviously reduce its equalization performance, in addition, these algorithms and product less at the loudspeaker channel number of equilibrium, and employed loudspeaker channel is more in the car, and under the more situation of loudspeaker channel, the performance of these algorithms also can obviously descend.
At the existing defective of existing room sound field automatic equalization product, simultaneously in conjunction with automation and the intelligent balanced demand of vehicle interior sound field, therefore need to seek a kind of intelligent balancer of vehicle interior sound field.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of low voice speaking intelligentized vehicle interior sound field balancer of putting environment in the car that is suitable for.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of vehicle interior sound field balancer comprises:
Loudspeaker array comprises a plurality of loudspeaker units that are arranged on a plurality of location points place in the car, and described loudspeaker unit is used for sending acoustic intelligence to interior space;
Microphone array comprises at least one microphone unit, and described microphone unit is arranged on to be treated in the equalization region, is used for picking up the sound field information that formed by described a plurality of loudspeaker units stacks and sound field information is converted into the signal of telecommunication;
The sound field equalization processor, it has the input with the corresponding connection of output of described microphone unit;
The multichannel power amplifier, its input is connected with the output of described sound field equalization processor, and the output of described multichannel power amplifier is connected with described loudspeaker array.
In some certain embodiments, the quantity of described microphone unit is one, and this interior space has a plurality of equalization region for the treatment of, in each treated equalization region, described microphone unit and car removably connected.
In some preferred embodiment, described microphone unit is wired microphone.
In some preferred embodiment, described microphone unit is radio microphone.
In some preferred embodiment, described microphone unit lay the both sides that the position is seat in the car.
In some certain embodiments, described microphone unit is a plurality of, and described a plurality of microphone units constitute microphone array.
In some preferred embodiment, described a plurality of microphones are arranged on the both sides of seat in the car.
In some preferred embodiment, described microphone unit is wired microphone unit, and described wired microphone unit comprises microphone, signal transmission cable and microphone driver.
In some preferred embodiment, described sound field equalization processor comprises the analog input interface, analog to digital converter, data buffer, second digital signal processor, input equipment and parameter downloads interface, the signal of telecommunication that described analog input interface is used for described microphone array is picked up is input to described sound field equalization processor, described input equipment is used for input user's desired value, the signal of telecommunication that described second digital signal processor picks up for desired value and described each microphone unit in conjunction with user's input, obtain the equalization processor parameter of each loudspeaker unit, described data buffer is used for the buffer memory input value, and described parameter downloads interface is used for the equalization processor parameter downloads in described multichannel power amplifier.
In some preferred embodiment, described microphone unit is the radio microphone unit, described radio microphone unit comprises microphone, signal transmission cable, the microphone driver, data buffer, data processor, wireless transceiver and supply module, described radio microphone, the transmission of wireless signals cable, the radio microphone driver is used for picking up the sound field information for the treatment of equalization region, described data buffer is used for the sound field information that buffer-stored is picked up, described data processor is for the treatment of sound field information, described wireless transceiver comprises modulator-demodulator, data buffer, A/D and D/A converter, described wireless transceiver is used for uploading sound field information to described sound field equalization processor, receive the control command that described sound field equalization processor is assigned, notify described radio microphone driver to pick up sound field information, described supply module is used for providing power supply.
In some preferred embodiment, described sound field equalization processor comprises digital input interface, data buffer, second digital signal processor, input equipment and parameter downloads interface, the signal of telecommunication that described digital input interface is used for described microphone array is picked up is input to described sound field equalization processor, described data buffer is used for the buffer memory of input value, described input equipment is used for input user's desired value, the signal of telecommunication that described second digital signal processor picks up for desired value and described each microphone unit in conjunction with user's input, obtain the equalization processor parameter of each loudspeaker unit, described parameter downloads interface is used for the equalization processor parameter downloads in described multichannel power amplifier.
In some certain embodiments, described multichannel power amplifier comprises the parameter downloads port, first digital signal processor, power amplifier, digital to analog converter, described first digital signal processor is used for the optimum equalization processor parameter of described each loudspeaker unit passage that the described sound field equalization processor of response imports, described parameter downloads port is used for the equalization processor parameter is input to described first digital signal processor, described digital to analog converter is used for digital signal is converted to analog signal, and export to described power amplifier, described power amplifier is used for the power amplification of signal, drive the loudspeaker unit sounding.
In some certain embodiments, described loudspeaker array comprises bass unit, middle pitch unit, voice unit and supper bass unit.
The utility model adopts above technical scheme, the intelligent balancer of vehicle interior sound field, can finish the sound field equalization task of each desired locations point in the car automatically, and storage is corresponding to the parametric equalizer of each loudspeaker channel, by loading these equalization processor parameters to the digital signal processor inside of multichannel power amplifier, just can finish the equalization task of vehicle interior sound field easily.Have following advantage compared to existing technology:
1, this automation and intelligentized vehicle interior sound field balancing technique have been simplified the debugging task of vehicle interior sound field, have shortened debug time, have saved repetitious test and audition work, have made things convenient for the debugging of vehicle interior sound field;
2, owing to low voice speakingly put the practical situation that environment and a plurality of loudspeaker channel work simultaneously and develop design at what car internal reflection sound accounted for Main Ingredients and Appearance, so vehicle interior sound field balancer, in the automatic equalization process of vehicle interior sound field, has optimum sound field portfolio effect.
Description of drawings
Fig. 1 is the signal processing flow figure of the utility model embodiment one;
Fig. 2 is the schematic diagram of the utility model embodiment one;
Fig. 3 is the composition structured flowchart of the microphone unit of the utility model embodiment one;
Structured flowchart is formed in the inside of the sound field equalization processor of Fig. 4 the utility model embodiment one;
Fig. 5 forms structured flowchart for the inside of the multichannel power amplifier of the utility model enforcement one;
Fig. 6 is the composition structured flowchart of the microphone unit of the utility model embodiment two;
Fig. 7 is that structured flowchart is formed in the inside of the sound field equalization processor of the utility model embodiment two.
Wherein: 1, microphone array; 10, microphone unit; 11, microphone; 12, signal transmission cable; 13, microphone driver; 14, data buffer; 15, data processor; 16, wireless transceiver; 17, supply module;
2, sound field equalization processor; 20, digital input interface; 21, data buffer; 22, input equipment; 23, second digital signal processor; 24, parameter downloads interface; 25, analog input interface; 26, ADC;
3, multichannel power amplifier; 30, parameter downloads port; 31, first digital signal processor; 32, DAC; 33, power amplifier;
4, loudspeaker array; 40, bass unit; 41, middle pitch unit; 42, voice unit; 43, supper bass unit;
5, seat.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be those skilled in the art will recognize that protection range of the present utility model is made more explicit defining.
Embodiment 1
Shown in accompanying drawing 1, a kind of vehicle interior sound field balancer comprises:
Microphone array 1, comprise at least one microphone unit 10, have a plurality of equalization region for the treatment of in the car, treat that equalization region is generally the zone that the hearer may exist in car, described microphone unit 10 is arranged on to be treated in the equalization region, is used for picking up the sound field information that formed by described a plurality of loudspeaker units stacks and sound field information is converted into the signal of telecommunication;
Sound field equalization processor 2, it has the input with the corresponding connection of output of described microphone unit 10, is used for obtaining according to the signal of telecommunication of described microphone array 1 output the optimum equalization processor parameter of any loudspeaker unit;
Shown in accompanying drawing 2, microphone array 1 comprises eight microphone units 10, described microphone unit 10 is the radio microphone unit, the both sides, top of each seat 5 are placed two microphone units 10 respectively, and each microphone unit 11 is used for picking up the sound field information at seat 5 both sides and hearer's ears opposite position place.Described loudspeaker array 4 comprises two bass units 40, a middle pitch unit 41, two voice units 42 and two supper bass unit 43.Described sound field equalization processor 2 has eight inputs with the corresponding connection of output of described eight microphone units 10.
Shown in accompanying drawing 3, described microphone unit 10 comprises microphone 11, signal transmission cable 12, microphone driver 13, data buffer 14, data processor 15, wireless transceiver 16 and supply module 17, described microphone 11, signal transmission cable 12, microphone driver 13 is used for picking up the sound field information at expectation equilibrium locations point place, described data buffer 14 is used for the sound field information that buffer-stored is picked up, described data processor 15 is for the treatment of sound field information, described wireless transceiver 16 comprises modulator-demodulator, data buffer, A/D and D/A converter, described wireless transceiver 16 is used for uploading the sound field data to described sound field equalization processor 2, receive the control command that described sound field equalization processor 2 is assigned, notify described microphone driver 13 to pick up sound field information, described supply module 17 is used for providing power supply to above-mentioned each module.
Shown in accompanying drawing 4, described sound field equalization processor 2 comprises digital input interface 20, data buffer 21, second digital signal processor 23, input equipment 22 and parameter downloads interface 24, the sound field information that described digital input interface 20 is used for microphone array 1 is picked up inputs to data buffer 21, described data buffer 21 is used for the buffer memory of input data, described input equipment 22 is keyboard, also can be touch-screen, be used for desired frequency response and the pulse respond equivalence of input user, described second digital signal processor 23 is used in conjunction with the desired value of user's input and the value of described microphone array 1 measurement, obtain the equalization processor parameter on each loudspeaker unit passage, described parameter downloads interface 24 is used for calculating good equalization processor parameter downloads in described multichannel power amplifier 3.
Shown in accompanying drawing 5, described multichannel power amplifier 3 comprises parameter downloads port 30, first digital signal processor 31, power amplifier 33, digital to analog converter, described parameter downloads port 30 is used for downloading the equalization processor parameter of described each loudspeaker unit passage that described sound field equalization processor 2 imports into, optimum equalization processor parameter is input on described first digital signal processor 31, described first digital signal processor 31 is used for the optimum equalization processor parameter of described each loudspeaker unit that the described sound field equalization processor 2 of response imports, finish the optimization equilibrium treatment to described each loudspeaker unit passage, described digital to analog converter 32 abbreviates DAC as, be used for digital signal is converted to analog signal, and export to described power amplifier 33, described power amplifier 33 is used for the power amplification of signal, drive the loudspeaker sounding.
Described each power amplifier 33 passage can drive single described loudspeaker unit, also can drive a plurality of described loudspeaker units.
The intelligent balancer of vehicle interior sound field has been removed heavy test and the audition work of audio engineer, makes the balanced operation of vehicle interior sound field become simple and direct quick, has shortened debug time, for the vehicle interior sound field equilibrium provides considerable convenience.
Accompanying drawing 6, accompanying drawing 7 are depicted as another kind of embodiment of the present utility model.Be with the difference of embodiment one: the wired microphone array of described microphone array 1 for being made up of a plurality of wired microphone units, microphone unit 10 is wired microphone unit.
Shown in accompanying drawing 6, wired microphone unit is realized simple, mainly comprises microphone 11, signal transmission cable 12 and 13 3 part compositions of microphone driver.
Shown in accompanying drawing 7, described sound field equalization processor 2 comprises the analog input interface 25 of wired microphone array, analog to digital converter 26, data buffer 21, second digital signal processor 23, input equipment 22 and parameter downloads interface 24, described input equipment 22 is used for desired frequency response and the pulse respond of input user, described second digital signal processor 23 is used in conjunction with the expectation curve of user's input and the curve of described microphone array 1 measurement, obtain the equalization processor parameter on each loudspeaker channel, described data buffer 21 is used for the buffer memory of input data, and described parameter downloads interface 24 is used for the equalization processor parameter downloads in described multichannel power amplifier 3.
Except the vehicle interior sound field balancer that above-mentioned two kinds of embodiment put down in writing, described microphone array 1 can also lay the formed virtual microphone array in position by changing successively for single microphone unit.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics; it is a kind of preferred embodiment; its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to spiritual essence of the present utility model change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (13)
1. a vehicle interior sound field balancer is characterized in that, comprising:
Loudspeaker array comprises a plurality of loudspeaker units that are arranged on a plurality of location points place in the car, and described loudspeaker unit is used for sending acoustic intelligence to interior space;
Microphone array comprises at least one microphone unit, and described microphone unit is arranged on to be treated in the equalization region, is used for picking up the sound field information that formed by described a plurality of loudspeaker units stacks and sound field information is converted into the signal of telecommunication;
The sound field equalization processor, it has the input with the corresponding connection of output of described microphone unit;
The multichannel power amplifier, its input is connected with the output of described sound field equalization processor, the output of described multichannel power amplifier is connected with described loudspeaker array, and described multichannel power amplifier drives described a plurality of loudspeaker unit and carries out the electroacoustic conversion.
2. vehicle interior sound field balancer according to claim 1, it is characterized in that: the quantity of described microphone unit is one, and this interior space has a plurality of equalization region for the treatment of, and in each treated equalization region, described microphone unit and car removably connected.
3. vehicle interior sound field balancer according to claim 2, it is characterized in that: described microphone unit is wired microphone.
4. vehicle interior sound field balancer according to claim 2, it is characterized in that: described microphone unit is radio microphone.
5. vehicle interior sound field balancer according to claim 2 is characterized in that: described microphone unit lay the both sides that the position is seat in the car.
6. vehicle interior sound field balancer according to claim 1, it is characterized in that: described microphone unit is a plurality of, described a plurality of microphone units constitute microphone arrays.
7. vehicle interior sound field balancer according to claim 6 is characterized in that: described a plurality of microphones are arranged on the both sides of seat in the car.
8. vehicle interior sound field balancer according to claim 6, it is characterized in that: described microphone unit is wired microphone unit, described wired microphone unit comprises microphone, signal transmission cable and microphone driver.
9. vehicle interior sound field balancer according to claim 8, it is characterized in that: described sound field equalization processor comprises the analog input interface, analog to digital converter, data buffer, second digital signal processor, input equipment and parameter downloads interface, the signal of telecommunication that described analog input interface is used for described microphone array is picked up is input to described sound field equalization processor, described input equipment is used for input user's desired value, the signal of telecommunication that described second digital signal processor picks up for desired value and described each microphone unit in conjunction with user's input, obtain the equalization processor parameter of each loudspeaker unit, described data buffer is used for the buffer memory input value, and described parameter downloads interface is used for the equalization processor parameter downloads in described multichannel power amplifier.
10. vehicle interior sound field balancer according to claim 6, it is characterized in that: described microphone unit is the radio microphone unit, described radio microphone unit comprises microphone, signal transmission cable, the microphone driver, data buffer, data processor, wireless transceiver and supply module, described radio microphone, the transmission of wireless signals cable, the radio microphone driver is used for picking up the sound field information for the treatment of equalization region, described data buffer is used for the sound field information that buffer-stored is picked up, described data processor is for the treatment of sound field information, described wireless transceiver comprises modulator-demodulator, data buffer, A/D and D/A converter, described wireless transceiver is used for uploading sound field information to described sound field equalization processor, receive the control command that described sound field equalization processor is assigned, notify described radio microphone driver to pick up sound field information, described supply module is used for providing power supply.
11. vehicle interior sound field balancer according to claim 10, it is characterized in that: described sound field equalization processor comprises digital input interface, data buffer, second digital signal processor, input equipment and parameter downloads interface, the signal of telecommunication that described digital input interface is used for described microphone array is picked up is input to described sound field equalization processor, described data buffer is used for the buffer memory of input value, described input equipment is used for input user's desired value, the signal of telecommunication that described second digital signal processor picks up for desired value and described each microphone unit in conjunction with user's input, obtain the equalization processor parameter of each loudspeaker unit, described parameter downloads interface is used for the equalization processor parameter downloads in described multichannel power amplifier.
12. vehicle interior sound field balancer according to claim 1, it is characterized in that: described multichannel power amplifier comprises the parameter downloads port, first digital signal processor, power amplifier, digital to analog converter, described first digital signal processor is used for the optimum equalization processor parameter of described each loudspeaker unit passage that the described sound field equalization processor of response imports, described parameter downloads port is used for the equalization processor parameter is input to described first digital signal processor, described digital to analog converter is used for digital signal is converted to analog signal, and export to described power amplifier, described power amplifier is used for the power amplification of signal, drive the loudspeaker unit sounding.
13., it is characterized in that described loudspeaker array comprises bass unit, middle pitch unit, voice unit and supper bass unit according to the described vehicle interior sound field balancer of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320150982 CN203167229U (en) | 2013-03-29 | 2013-03-29 | Vehicle interior sound field equalization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320150982 CN203167229U (en) | 2013-03-29 | 2013-03-29 | Vehicle interior sound field equalization device |
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| Publication Number | Publication Date |
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| CN203167229U true CN203167229U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320150982 Expired - Lifetime CN203167229U (en) | 2013-03-29 | 2013-03-29 | Vehicle interior sound field equalization device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014153943A1 (en) * | 2013-03-29 | 2014-10-02 | 苏州上声电子有限公司 | Balancing apparatus for sound field in vehicle |
| CN104835487A (en) * | 2014-02-10 | 2015-08-12 | 杭州歌丽瑞环保科技有限公司 | Household active noise reduction system and noise reduction control method thereof |
-
2013
- 2013-03-29 CN CN 201320150982 patent/CN203167229U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014153943A1 (en) * | 2013-03-29 | 2014-10-02 | 苏州上声电子有限公司 | Balancing apparatus for sound field in vehicle |
| CN104835487A (en) * | 2014-02-10 | 2015-08-12 | 杭州歌丽瑞环保科技有限公司 | Household active noise reduction system and noise reduction control method thereof |
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Address after: 215133 yuan and Technology Park, Suzhou, Jiangsu Province, Chuang Chuang No. 333 Patentee after: SUZHOU SONAVOX ELECTRONICS Co.,Ltd. Address before: 215133 yuan and Technology Park, Suzhou, Jiangsu Province, Chuang Chuang No. 333 Patentee before: SUZHOU SONAVOX ELECTRONICS Co.,Ltd. |
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Granted publication date: 20130828 |