CN206532594U - Electronic noise reduction device and vehicle - Google Patents
Electronic noise reduction device and vehicle Download PDFInfo
- Publication number
- CN206532594U CN206532594U CN201720170263.6U CN201720170263U CN206532594U CN 206532594 U CN206532594 U CN 206532594U CN 201720170263 U CN201720170263 U CN 201720170263U CN 206532594 U CN206532594 U CN 206532594U
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- noise reduction
- terminal handler
- loudspeaker
- noise
- reversed polarity
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Abstract
The utility model provides a kind of electronic noise reduction device, including：Noise gathering microphone, secondary wave amplitude compensation collection meter, reversed polarity loudspeaker, terminal handler, the both positive and negative polarity of the both positive and negative polarity and the signal input part of the terminal handler of the signal output part of the noise gathering microphone is connected respectively, the terminal handler is used to the audio signal of collection is amplified or reduced, the positive output end of the terminal handler is connected with the negative input of the reversed polarity loudspeaker, the negative sense output end of the terminal handler is connected with the positive input of the reversed polarity loudspeaker, the reversed polarity loudspeaker is used to play reverse noise reduction sound wave, the output end of the secondary wave amplitude compensation collection meter is connected with the input of the terminal handler, the secondary wave amplitude compensation collection meter is used to gather sound pressure level size.The electronic noise reduction device is the product of independent completion, it is not necessary to depends in other equipment and uses.
Description
Technical field
The utility model is related to a kind of electronic noise reduction device and vehicle.
Background technology
A kind of noise reduction technology of vehicle is provided in correlation technique, it gathers the electricity of generator using electrical signal collection unit
Signal is flowed, then current signal is converted into tach signal by chromacoder and sends tach signal to Electronic Control list
Member, electronic control unit carries out output control signal driving audio output device after data calculating using microprocessor and sends and make an uproar
Sound opposite in phase amplitude identical sound wave.
This technology is topmost to be had the disadvantage：Said apparatus needs to depend on to use with car sound equipment, is not one independent
Complete product, is restricted using flexibility ratio, it is not possible to is arbitrarily displaced into varying environment and is used, and is needed and car during acquisition noise
On circuit connect to gather its current signal.
Utility model content
The utility model is intended at least solve above-mentioned technical problem to a certain extent or provides at a kind of useful business
Industry is selected.Therefore, a purpose of the present utility model is to provide a kind of electronic noise reduction device, the electronic noise reduction device is used
The mode of polarity adjustment makes speaker diaphragm reversal of vibrations to adjust the phase and amplitude of sound wave, and does not need microprocessor to calculate
Adjust the phase of sound wave and the process of amplitude.It is the noise gathering microphone, secondary wave amplitude compensation collection meter, described
Reversed polarity loudspeaker is combined as the product of independent completion with the terminal handler, it is not necessary to depends on other equipment and uses, makes
Wide and flexible with scope, the mode of said apparatus acquisition noise is that directly noise source is acquired, it is not necessary to which collection turns indirectly
Change.Another purpose of the utility model is to provide a kind of automobile.
A kind of electronic noise reduction device that the utility model is provided, the electronic noise reduction device includes：Noise gathering microphone,
Secondary wave amplitude compensation collection meter, reversed polarity loudspeaker, terminal handler,
The forward signal output end of the noise gathering microphone and the forward signal input phase of the terminal handler
Even, the negative-going signal output end of the noise gathering microphone is connected with the negative-going signal input of the terminal handler, institute
Stating noise gathering microphone is used for acquisition noise acoustic signals, and the terminal handler is used to carry out the noise acoustic signals
It is enlarged or reduced；
The positive output end of the terminal handler is connected with the negative input of the reversed polarity loudspeaker, the terminal
The negative sense output end of processor is connected with the positive input of the reversed polarity loudspeaker, and the reversed polarity loudspeaker is used to play
Reverse noise reduction sound wave；
The output end of the secondary wave amplitude compensation collection meter is connected with the input of the terminal handler, described
Secondary wave amplitude compensation collection meter is used for the size for gathering the reverse noise reduction acoustic signals, and by electric in terminal handler
The adjustment on road is compensated to the amplitude of the reverse noise reduction sound wave.
A kind of electronic noise reduction device that the utility model is provided, the mode that the electronic noise reduction device is adjusted using polarity makes
Speaker diaphragm reversal of vibrations adjusts the phase and amplitude of sound wave, and do not need microprocessor calculate the phase of adjustment sound wave with
The process of amplitude.The noise gathering microphone, the secondary wave amplitude compensation collection meter, the reversed polarity loudspeaker and institute
State the product that terminal handler is combined as independent completion, it is not necessary to depend on other equipment and use, it is wide and flexible using scope, on
State the mode of device acquisition noise to be directly acquired noise source, it is not necessary to collection conversion indirectly.
In addition, according to the above-mentioned electronic noise reduction device of the utility model, can also have following technical characteristic：
The main pickup face of the noise gathering microphone and the playback of the reversed polarity loudspeaker are facing to same direction.
The terminal handler is single-chip microcomputer.
The terminal handler is acoustic signal processor.
The acoustic signal processor includes audio frequency power amplifier and bias set circuti.
The utility model provides a kind of automobile, and the automobile includes the electronic noise reduction device of above-mentioned any structure.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined
Become substantially and be readily appreciated that, wherein：
Fig. 1 is the stereogram of the electronic noise reduction device of the utility model one embodiment；
Fig. 2 is the schematic diagram of the electronic noise reduction device of the utility model one embodiment；
Fig. 3 is the schematic diagram of the electronic noise reduction device of the utility model another embodiment；
Fig. 4 is the workflow diagram of the electronic noise reduction device of the utility model one embodiment.
Reference：
Noise gathering microphone 100, secondary wave amplitude compensation collection meter 200, reversed polarity loudspeaker 300, terminal processes
Device 400, single-chip microcomputer 500, acoustic signal processor 600.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.In description of the present utility model, it is to be understood that the orientation or position relationship of the instruction such as term " on ", " under "
Described based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplifying, without referring to
Show or imply that the structure or element of meaning there must be specific orientation, with specific azimuth configuration and operation, therefore can not manage
Solve as to limitation of the present utility model.
The utility model provides a kind of electronic noise reduction device.Fig. 1 is the electronic noise reduction of the utility model one embodiment
The stereogram of device；Fig. 2 is the schematic diagram of the electronic noise reduction device of the utility model one embodiment；Fig. 3 is the utility model
The schematic diagram of the electronic noise reduction device of another embodiment；Fig. 4 is the electronic noise reduction device of the utility model one embodiment
Workflow diagram.
With reference to Fig. 1-Fig. 4, the utility model provides a kind of electronic noise reduction device, and the electronic noise reduction device includes：Make an uproar
Sound collection microphone 100, secondary wave amplitude compensation collection meter 200, reversed polarity loudspeaker 300, terminal handler 400.
Specifically, with reference to Fig. 1-Fig. 3, forward signal output end and the end of the noise gathering microphone 100
The forward signal input for managing device 400 is connected, negative-going signal output end and the end of the noise gathering microphone 100
The negative-going signal input for managing device 400 is connected, and the noise gathering microphone 100 collection is the live noise sound wave presented
Signal, the terminal handler 400 is used to the noise acoustic signals are amplified or reduced.
Specifically, with reference to Fig. 1-Fig. 3, the positive output end of the terminal handler 400 and the reversed polarity loudspeaker 300
Negative input be connected, the positive input of the negative sense output end of the terminal handler 400 and the reversed polarity loudspeaker 300
End is connected, and the reversed polarity loudspeaker 300 is used to play reverse noise reduction sound wave, the reversed polarity loudspeaker 300 by with it is described
The both positive and negative polarity of terminal handler 400 reversely couples, and makes diaphragm reversal of vibrations and sends reverse noise reduction sound wave, reaches the purpose of noise reduction,
The output end of the secondary wave amplitude compensation collection meter 200 is connected with the input of the terminal handler 400, described
Secondary wave amplitude compensation collection meter 200 is used to gather the sound wave for being used to offset noise that the reversed polarity loudspeaker 300 is exported
The sound pressure level size of signal（That is amplitude size）, pass through the adjustment of the audio power amplifier circuit and biasing circuit of terminal handler 400
The amplitude of the noise reduction acoustic waveform exported to the reversed polarity loudspeaker 300 is compensated.
Specifically, with reference to Fig. 1-Fig. 3, the terminal handler 400 is single-chip microcomputer 500 or acoustic signal processor 600, institute
Stating acoustic signal processor 600 can be amplified or reduce to the audio signal of collection, and the acoustic signal processor 600 includes sound
Frequency power amplifier and bias set circuti.
Following processes and principle for briefly introducing noise reduction：
Explanation：Hereinafter the noise sound wave for the required elimination that noise gathering microphone 100 is gathered is referred to as primary sound wave, institute
The sound wave for being used for noise reduction needed for offsetting for stating the output of reversed polarity loudspeaker 300 is referred to as secondary sound wave.
With reference to Fig. 1-Fig. 4, specifically, the noise gathering microphone 100 is acquired to primary sound wave first, to primary
The collection of sound wave is the waveform that primary sound wave is gathered using the noise gathering microphone 100, then by the primary sound collected
The waveform of ripple is converted to after electric signal, passes to the acoustic signal processor 600, the output of acoustic signal processor 600 processing
Good electric signal is played in the form of a sound wave by the reversed polarity loudspeaker 300（Secondary sound wave）, due to the terminal handler
400 positive output end is connected with the negative input of the reversed polarity loudspeaker 300, the negative sense of the terminal handler 400
Output end is connected with the positive input of the reversed polarity loudspeaker 300, therefore the diaphragm of loudspeaker will be in reversal of vibrations state, institute
The waveform that the secondary sound wave of output is played with the reversed polarity loudspeaker 300 is inverted waveform, i.e., with the noise gathering Mike
The noise sound wave waveform that wind 100 is gathered just on the contrary, namely the reversed polarity loudspeaker 300 output secondary acoustic waveform
The opposite in phase for the primary sound wave waveform that phase is collected with the noise gathering microphone 100.
The secondary wave amplitude compensation collection meter 200 is mainly used in gathering the size of the sound pressure level of the secondary sound wave,
The acoustic signal processor 600 is given by the information transfer collected, the acoustic signal processor 600 is according to the sound pressure level received
Be enlarged or reduced gain of the information to internal audio-frequency amplifier is finely adjusted adjustment, makes what the reversed polarity loudspeaker 300 was exported
The sound pressure level size of secondary sound wave is identical with the sound pressure level size of primary sound wave, even if the reversed polarity loudspeaker 300 is played
Secondary sound wave amplitude it is identical with the amplitude size of primary sound wave.
It is the noise gathering microphone 100, the secondary wave amplitude compensation collection meter 200, described with reference to Fig. 1-Fig. 3
The mounting means that reversed polarity loudspeaker 300 is installed in the same direction using closing on, i.e., the main pickup face of described noise gathering microphone 100,
The outside of the acoustic signals receiving panel of i.e. described noise gathering microphone 100, and the reversed polarity loudspeaker 300 playback face
Towards same direction, and ensureing the noise gathering microphone 100, the secondary wave amplitude compensation collection meter 200, institute
Close proximity to collection in the case of stating reversed polarity loudspeaker 300 and will not interfering, namely near field is gathered, so that the reversed polarity
The noise sound wave waveform that the reverse acoustic waveform that loudspeaker 300 is exported is gathered with the noise gathering microphone 100 can be opposite
And go, reach more preferably noise reduction.
The utility model provides a kind of automobile, and the automobile includes above-mentioned electronic noise reduction device, the electronic noise reduction
The mode that device is adjusted using polarity makes speaker diaphragm reversal of vibrations to adjust the phase and amplitude of sound wave, and does not need micro- place
Manage device and calculate the phase of adjustment sound wave and the process of amplitude.The noise gathering microphone 100, the secondary wave amplitude compensation
Collection meter 200, the reversed polarity loudspeaker 300 are combined as the product of independent completion with the terminal handler 400, it is not necessary to according to
Invest other equipment to use, wide and flexible using scope, the mode of said apparatus acquisition noise is directly to adopt noise source
Collection, it is not necessary to collection conversion indirectly.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be
Combined in an appropriate manner in any one or more embodiments or example.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the range of the utility model, change, replace and
Modification.
Claims (6)
1. a kind of electronic noise reduction device, it is characterised in that including：Noise gathering microphone, secondary wave amplitude compensation collection meter,
Reversed polarity loudspeaker, terminal handler,
The forward signal output end of the noise gathering microphone is connected with the forward signal input of the terminal handler, institute
State the negative-going signal output end of noise gathering microphone with the negative-going signal input of the terminal handler to be connected, the noise
Gather microphone be used for acquisition noise acoustic signals, the terminal handler be used for the noise acoustic signals are amplified or
Reduce；
The positive output end of the terminal handler is connected with the negative input of the reversed polarity loudspeaker, the terminal processes
The negative sense output end of device is connected with the positive input of the reversed polarity loudspeaker, and the reversed polarity loudspeaker is used to play reversely
Noise reduction sound wave；
The output end of the secondary wave amplitude compensation collection meter is connected with the input of the terminal handler, the secondary
Wave amplitude compensation collection meter is used for the size for gathering the reverse noise reduction acoustic signals, and passes through circuit in terminal handler
Adjust and the amplitude of the reverse noise reduction sound wave is compensated.
2. electronic noise reduction device according to claim 1, it is characterised in that the main pickup face of the noise gathering microphone
Playback with the reversed polarity loudspeaker is facing to same direction.
3. electronic noise reduction device according to claim 1, it is characterised in that the terminal handler is single-chip microcomputer.
4. electronic noise reduction device according to claim 1, it is characterised in that the terminal handler is Underwater Acoustic channels
Device.
5. electronic noise reduction device according to claim 4, it is characterised in that the acoustic signal processor includes audio frequency power amplifier
And bias set circuti.
6. a kind of automobile, it is characterised in that the electronic noise reduction device including any structure described in claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720170263.6U CN206532594U (en) | 2017-02-24 | 2017-02-24 | Electronic noise reduction device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720170263.6U CN206532594U (en) | 2017-02-24 | 2017-02-24 | Electronic noise reduction device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206532594U true CN206532594U (en) | 2017-09-29 |
Family
ID=59920064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720170263.6U Active CN206532594U (en) | 2017-02-24 | 2017-02-24 | Electronic noise reduction device and vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN206532594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108093337A (en) * | 2017-12-23 | 2018-05-29 | 广州市尊浪电器有限公司 | Noise reducing sound box component |
-
2017
- 2017-02-24 CN CN201720170263.6U patent/CN206532594U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108093337A (en) * | 2017-12-23 | 2018-05-29 | 广州市尊浪电器有限公司 | Noise reducing sound box component |
| CN108093337B (en) * | 2017-12-23 | 2019-08-02 | 广州市尊浪电器有限公司 | Noise reducing sound box component |
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