CN207966490U - A kind of aviation flight interphone system denoising device - Google Patents
A kind of aviation flight interphone system denoising device Download PDFInfo
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- CN207966490U CN207966490U CN201820440973.0U CN201820440973U CN207966490U CN 207966490 U CN207966490 U CN 207966490U CN 201820440973 U CN201820440973 U CN 201820440973U CN 207966490 U CN207966490 U CN 207966490U
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Abstract
The utility model discloses a kind of aviation flight interphone system denoising devices, belong to aviation electronics field, it is located on same axis by setting and is connect with speech enhan-cement module communication backwards to two microphones of setting, the time domain and frequency domain characteristic of voice signal can not only be utilized backwards to two microphones of array, moreover it is possible to achieve the purpose that inhibit noise using the spatial information of sound source；Speech enhan-cement module includes signal amplification module and subtraction module, and subtraction module can subtract band from noisy speech and make an uproar power spectrum, to obtain more pure voice spectrum.Signal processing module uses difference array voice enhancement algorithm, and the signal of high-quality is provided from required sound source position, while inhibiting the sound and ambient noise of other speakers, to obtain apparent de-noising effect.Active noise reduction earmuff, using adaptive filter algorithm, centering high frequency noise anti-acoustic capability is good, and adaptability is good, versatile.
Description
Technical field
The utility model is related to aviation electronics fields, more particularly to a kind of aviation flight interphone system denoising device.
Background technology
In the auxiliary products of aircraft or helicopter avionics system, in flight interphone System Take aircraft on machine between member
Call task, and be crosslinked with the equipment such as radio station, alarm equipment, integrated communication management equipment, realize the voice to radio station
Signal input and output, control radio station transmitting, receive other acoustic signals, complete contact with foreign countries task, while believing each road voice
Number carry out volume adjustment, complete monitoring task.
However, the decrease of noise functions of country's flight interphone mainly picks up voice by single Mike at present, in complicated acoustics ring
Under border, noise always comes from multiple directions, and it is often mutually overlapping on time and frequency spectrum with voice signal, then adds
It is more difficult to obtain relatively stable voice using single microphone for the influence of upper echo and reverberation.Simultaneously because noise reduction algorithm
Limitation and feature, single channel enhancing algorithm make voice distortion become larger the processing of Low SNR signal, and to nonstationary noise
Filtration result it is poor, residual noise can be formed.
In conclusion needing to have designed a kind of denoising device to improve above-mentioned deficiency.
Utility model content
In order to overcome the deficiencies of existing technologies, the technical problem to be solved by the utility model is to propose a kind of aviation machine
Interior phone system denoising device, the utility model are located at by setting on same axis and backwards to two microphones and language of setting
Sound enhances module communication connection, the time domain and frequency domain characteristic of voice signal can not only be utilized backwards to two microphones of array, also
It can achieve the purpose that inhibit noise using the spatial information of sound source；Speech enhan-cement module includes signal amplification module and subtraction
Module, subtraction module can subtract band from noisy speech and make an uproar power spectrum, to obtain more pure voice spectrum.Letter
Number processing module uses difference array voice enhancement algorithm, and the signal of high-quality is provided from required sound source position, is inhibited simultaneously
The sound and ambient noise of other speakers, to obtain apparent de-noising effect.Active noise reduction earmuff, using adaptive-filtering
Algorithm, centering high frequency noise anti-acoustic capability is good, and adaptability is good, versatile.
For this purpose, the utility model uses following technical scheme：
The utility model provides a kind of aviation flight interphone system denoising device, including actively drops hot-tempered earmuff, the master
The dynamic hot-tempered earmuff of drop includes two earmuff main bodys being oppositely arranged, the first metal connecting piece being oppositely arranged and the connection of the second metal
Part and arc body frame；
One end of first metal connecting piece is fixedly connected with an earmuff main body, first metal connecting piece
The other end be fixedly connected with one end of the arc body frame；
One end of second metal connecting piece is fixedly connected with earmuff main body described in another, the second metal connection
The other end of part is fixedly connected with the other end of the arc body frame；
Further include for receiving the microphone group of voice in external environment, for receiving the voice from the microphone group
Information and handled speech enhan-cement module, receive the voice messaging crossed from the speech enhan-cement resume module and use
The voice signal processing module of difference array voice enhancement algorithm；
The microphone group includes the first microphone and second microphone, and first microphone and second microphone are all provided with
In the front of the earmuff main body；
First microphone is located on same axis with the second microphone and is oppositely arranged backwards；
The speech enhan-cement module and the voice signal processing module are set to the inside of the earmuff main body；
First microphone is communicated with the signal input part of the speech enhan-cement module with the second microphone to be connected
It connects；
The signal input part of the voice signal processing module and the signal output end communication of the speech enhan-cement module connect
It connects, the signal output end of the voice signal processing module is connected with the signal input part communication for actively dropping hot-tempered earmuff.
Optionally, the speech enhan-cement module includes signal amplification module and subtraction module；
The signal output end and described second of the signal input part of the signal amplification module and first microphone
The signal output end communication connection of microphone；
The signal output end of the signal amplification module and the signal input part communication of the subtraction module connect；
The signal output end of the subtraction module and the signal input part communication of the voice signal processing module connect
It connects.
Optionally, the distance between first microphone and the second microphone are at least 30mm.
Optionally, further include third microphone and third connector；
One end of the third connector is fixedly connected in the earmuff main body, and the other end of the earmuff main body is fixed
There is the third microphone；
The third microphone is located at the front of the microphone group；
The third microphone and another signal input part communication of the speech enhan-cement module connect.
The beneficial effects of the utility model are：
A kind of aviation flight interphone system denoising device provided by the utility model, the utility model are located at same by setting
On one axis and backwards to setting two microphones connect with speech enhan-cement module communication, backwards to array two microphones not only
The time domain and frequency domain characteristic of voice signal can be utilized, moreover it is possible to achieve the purpose that inhibit noise using the spatial information of sound source；Voice
Enhancing module includes signal amplification module and subtraction module, and subtraction module can subtract band from noisy speech and make an uproar work(
Rate is composed, to obtain more pure voice spectrum.Signal processing module uses difference array voice enhancement algorithm, from required
Sound source position provides the signal of high-quality, while inhibiting the sound and ambient noise of other speakers, significantly disappears to obtain
It makes an uproar effect.Active noise reduction earmuff, using adaptive filter algorithm, centering high frequency noise anti-acoustic capability is good, and adaptability is good, general
Property is strong.
Description of the drawings
Fig. 1 is that a kind of structure for aviation flight interphone system denoising device that specific embodiment of the present invention provides is shown
It is intended to.
In figure：
1- microphone groups；The first microphones of 11-；12- second microphones；2- speech enhan-cement modules；21- signals amplify mould
Block；22- subtraction modules；3- voice signal processing modules；4- active noise reduction earmuffs；41- earmuff main bodys；The first metals of 42-
Connector；The second metal connecting pieces of 43-；44- arc body frames；5- third microphones；6- third connectors.
Specific implementation mode
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
Show to Fig. 1 exemplaries that a kind of structure of aviation flight interphone system denoising device provided by the utility model is shown
It is intended to.As shown in Figure 1, a kind of aviation flight interphone system denoising device, including hot-tempered earmuff 4 actively drops, the packet of hot-tempered earmuff 4 actively drops
Include two earmuff main bodys 41 being oppositely arranged, the first metal connecting piece 42 being oppositely arranged and the second metal connecting piece 43 and
Arc body frame 44；One end of first metal connecting piece 42 is fixedly connected with an earmuff main body 41, the first metal connecting piece 42
The other end is fixedly connected with one end of arc body frame 44；One end of second metal connecting piece 43 is fixed with another earmuff main body 41
Connection, the other end of the second metal connecting piece 43 are fixedly connected with the other end of arc body frame 44；Further include for receiving outside
The microphone group 1 of voice in environment, for speech enhan-cement mould that is receiving the voice messaging from microphone group 1 and being handled
Block 2 is received from 2 processed voice messaging of speech enhan-cement module and using the voice signal of difference array voice enhancement algorithm
Processing module 3；Microphone group 1 includes the first microphone 11 and second microphone 12, the first microphone 11 and second microphone 12
It is set to the front of earmuff main body 41；First microphone 11 is located on same axis with second microphone 12 and is set backwards to opposite
It sets；Speech enhan-cement module 2 and voice signal processing module 3 are set to the inside of earmuff main body 41；First microphone 11 and second
Microphone 12 is communicated with a signal input part of speech enhan-cement module 2 and is connected；The signal input part of voice signal processing module 3
It communicates and connects with the signal output end of speech enhan-cement module 2, the signal output end of voice signal processing module 3 and actively drop hot-tempered ear
The signal input part communication connection of cover 4.The first microphone 11 backwards to array can not only utilize voice to believe with second microphone 12
Number time domain and frequency domain characteristic, moreover it is possible to using the spatial information of sound source achieve the purpose that inhibit noise；Voice signal processing module 3
Using difference array voice enhancement algorithm, the signal of high-quality is provided from required sound source position, while inhibiting other speakers
Sound and ambient noise, to obtain apparent de-noising effect.Active noise reduction earmuff 4, using adaptive filter algorithm, centering
High frequency noise anti-acoustic capability is good, and adaptability is good, versatile.
Optionally, speech enhan-cement module 2 includes signal amplification module 21 and subtraction module 22；Signal amplification module 21
Signal input part and the first microphone 11 signal output end and second microphone 12 signal output end communication connect；
The signal output end of signal amplification module 21 and the signal input part communication of subtraction module 22 connect；Subtraction module 22
The signal input part communication of signal output end and voice signal processing module 3 connect.Speech enhan-cement module 2 is amplified including signal
Module 21 and subtraction module 22, subtraction module 22 can subtract band from noisy speech and make an uproar power spectrum, to obtain
More pure voice spectrum.
Optionally, the distance between the first microphone 11 and second microphone 12 are at least 30mm.First microphone 11 with
Second microphone 12 uses first-order difference array algorithm, is effectively formed the pickup beam of one 3 dimension, and the noise outside beam is all pressed down
System；The distance between first microphone 11 and second microphone 12 are with using the preferable spacing distance obtained by calculating
30mmm。
Optionally, further include third microphone 5 and third connector 6；One end of third connector 6 is fixedly connected on earmuff
In main body 41, the other end of earmuff main body 41 is fixed with third microphone 5；Third microphone 5 is located at the front of microphone group 1；
Third microphone 5 and another signal input part communication of speech enhan-cement module 2 connect.Third microphone 5, which increases, includes voice
Approach, the speech volume for being transmitted to earmuff main body 41 can be improved, improve the clarity for the voice heard, and then improve voice
Quality.
The utility model is described with reference to the preferred embodiments, and those skilled in the art know, is not departing from this reality
In the case of with novel spirit and scope, various changes or equivalence replacement can be carried out to these features and embodiment.This reality
It is not limited to the particular embodiment disclosed with novel, other embodiments fallen into claims hereof all belong to
In the range of the utility model protection.
Claims (4)
1. a kind of aviation flight interphone system denoising device, it is characterised in that：
Including actively dropping hot-tempered earmuff (4), the hot-tempered earmuff (4) that actively drops includes two earmuff main bodys (41), phases being oppositely arranged
The first metal connecting piece (42) and the second metal connecting piece (43) to setting and arc body frame (44)；
One end of first metal connecting piece (42) is fixedly connected with an earmuff main body (41), and first metal connects
The other end of fitting (42) is fixedly connected with one end of the arc body frame (44)；
One end of second metal connecting piece (43) is fixedly connected with earmuff main body (41) described in another, second metal
The other end of connector (43) is fixedly connected with the other end of the arc body frame (44)；
Further include for receiving the microphone group (1) of voice in external environment, for receiving the language from the microphone group (1)
Speech enhan-cement module (2) that is that message ceases and being handled is received from the processed voice letter of the speech enhan-cement module (2)
Breath and the voice signal processing module (3) for using difference array voice enhancement algorithm；
The microphone group (1) includes the first microphone (11) and second microphone (12), first microphone (11) and the
Two microphones (12) are set to the front of the earmuff main body (41)；
First microphone (11) is located on same axis with the second microphone (12) and is oppositely arranged backwards；
The speech enhan-cement module (2) and the voice signal processing module (3) are set to the inside of the earmuff main body (41)；
First microphone (11) inputs with a signal of the speech enhan-cement module (2) with the second microphone (12)
End communication connects；
The signal input part of the voice signal processing module (3) and the signal output end of the speech enhan-cement module (2) communicate
Connection, the signal output end of the voice signal processing module (3) are communicated with the signal input part for actively dropping hot-tempered earmuff (4)
Connection.
2. a kind of aviation flight interphone system denoising device as described in claim 1, it is characterised in that：
The speech enhan-cement module (2) includes signal amplification module (21) and subtraction module (22)；
The signal output end of the signal input part of the signal amplification module (21) and first microphone (11) and described
The signal output end communication connection of second microphone (12)；
The signal output end of the signal amplification module (21) and the signal input part communication of the subtraction module (22) connect
It connects；
The signal output end of the subtraction module (22) is communicated with the signal input part of the voice signal processing module (3)
Connection.
3. a kind of aviation flight interphone system denoising device as claimed in claim 2, it is characterised in that：
The distance between first microphone (11) and the second microphone (12) are at least 30mm.
4. a kind of aviation flight interphone system denoising device as described in claim 1, it is characterised in that：
Further include third microphone (5) and third connector (6)；
One end of the third connector (6) is fixedly connected on the earmuff main body (41), the earmuff main body (41) it is another
One end is fixed with the third microphone (5)；
Another signal input part communication of the third microphone (5) and the speech enhan-cement module (2) connects.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440973.0U CN207966490U (en) | 2018-03-29 | 2018-03-29 | A kind of aviation flight interphone system denoising device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820440973.0U CN207966490U (en) | 2018-03-29 | 2018-03-29 | A kind of aviation flight interphone system denoising device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995952A (en) * | 2019-11-29 | 2020-04-10 | 北京空间技术研制试验中心 | Aerospace alarm and communication equipment |
| CN110992922A (en) * | 2019-12-11 | 2020-04-10 | 中国人民解放军空军工程大学航空机务士官学校 | Wireless earphone noise reduction communication method and device for aviation locomotive test run environment |
| CN113573188A (en) * | 2021-05-17 | 2021-10-29 | 深圳市瑞禾高科通讯电子有限公司 | Screen noise earphone |
| CN113992223A (en) * | 2021-10-29 | 2022-01-28 | 江西扬声电子有限公司 | Built-in conversation system based on microphone array noise reduction |
-
2018
- 2018-03-29 CN CN201820440973.0U patent/CN207966490U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995952A (en) * | 2019-11-29 | 2020-04-10 | 北京空间技术研制试验中心 | Aerospace alarm and communication equipment |
| CN110992922A (en) * | 2019-12-11 | 2020-04-10 | 中国人民解放军空军工程大学航空机务士官学校 | Wireless earphone noise reduction communication method and device for aviation locomotive test run environment |
| CN110992922B (en) * | 2019-12-11 | 2023-10-31 | 中国人民解放军空军工程大学航空机务士官学校 | Noise reduction communication method and device for wireless earphone in aircraft service test environment |
| CN113573188A (en) * | 2021-05-17 | 2021-10-29 | 深圳市瑞禾高科通讯电子有限公司 | Screen noise earphone |
| CN113992223A (en) * | 2021-10-29 | 2022-01-28 | 江西扬声电子有限公司 | Built-in conversation system based on microphone array noise reduction |
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