CN206713027U - Denoising device and earphone - Google Patents
Denoising device and earphone Download PDFInfo
- Publication number
- CN206713027U CN206713027U CN201720297493.9U CN201720297493U CN206713027U CN 206713027 U CN206713027 U CN 206713027U CN 201720297493 U CN201720297493 U CN 201720297493U CN 206713027 U CN206713027 U CN 206713027U
- Authority
- CN
- China
- Prior art keywords
- noise
- feedback
- adjustable gain
- feedforward
- gain units
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Headphones And Earphones (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
It the utility model is related to a kind of denoising device and earphone, the environmental noise of outside is collected using feedforward microphone, feed forward noise reduction circuit carries out the processing of paraphase 180 degree to environmental noise, simultaneously, feedback microphones collect the noise of enclosure interior, carry out the processing of paraphase 180 degree to the noise of enclosure interior by feedback noise reduction circuit；Noise spectrum analytic unit is according to the low-frequency range of environmental noise and the ratio of medium-high frequency section, the gain of corresponding adjustment feedback adjustable gain units and the gain for the adjustable gain units that feedover, and then the environmental noise after Gain tuning and the noise of inside are added by adder, and it is superimposed to loudspeaker, eliminate the interference to useful sound, low-frequency range and medium-high frequency section can either be dropped deep and can enough drops wide, play preferable noise reduction.
Description
Technical field
Noise reduction technology field is the utility model is related to, the ear more particularly to a kind of denoising device and comprising the denoising device
Machine.
Background technology
Common noise reduction technology generally has two ways, and one kind is feed forward type (Feed-Forward), and one kind is reaction type
(Feedback).In feed forward type noise reduction technology, a microphone outside is provided with typically on earphone, the microphone is used for
Environmental noise outside receiving, is then added to environmental noise paraphase 180 degree on loudspeaker, it is possible to the environment penetrated into
Noise eliminates.Reaction type noise reduction technology is mainly used in the larger headphone of volume, and microphone is located inside earphone, due to
The microphone is very close to the loudspeaker inside earphone, therefore the object sampled is the environmental noise that earphone internal receipt arrives, then
Elimination environmental noise is superimposed by way of feedback again.
Reaction type technology noise reduction drops deep, but is confined to low frequency；Feed forward type technology noise reduction drops wide, but can not be dropped in low frequency
Obtain very deep.That is, feed forward type noise reduction is mainly effective in medium-high frequency section, it is bad in low-frequency range noise reduction, and reaction type drops
Make an uproar mainly effective in low-frequency range, it is ineffective in medium-high frequency section.The low-frequency range of noise and the sound of medium-high frequency section are not equilibrium
, the sound of some noise low-frequency ranges is more, and the sound of some noise medium-high frequency sections is more, if simply using feed forward type noise reduction
Noise reduction is carried out with reaction type noise reduction simple combination, it is difficult to not only drop deep but also dropped wide, i.e., can not play preferable noise reduction.
Utility model content
Based on this, it is necessary to provide a kind of drop for reaching preferable noise reduction with feed forward type noise reduction and reaction type noise reduction
Make an uproar device and the earphone comprising the denoising device.
A kind of denoising device, including：
Sounding main body, the adder of the connection sounding main body, the feedforward adjustable gain units of the connection adder and
Feed back adjustable gain units；
Feedforward microphone, it is arranged in the sounding main body, for receiving the environmental noise of the sounding body exterior；
Connect the feed forward noise reduction circuit of the feedforward adjustable gain units and the feedforward microphone；
Feedback microphones, it is arranged in the sounding main body, for receiving the noise of the sounding body interior；
Connect the feedback noise reduction circuit of the feedback adjustable gain units and the feedback microphones；
Noise spectrum analytic unit, the feedforward microphone, the feedforward adjustable gain units and described are connected respectively
Adjustable gain units are fed back, for the low-frequency range according to the environmental noise and the ratio of medium-high frequency section, corresponding adjustment is described anti-
Present the gain of adjustable gain units and the gain of the feedforward adjustable gain units.
In one of the embodiments, it is provided with first switch list between the feedforward adjustable gain units and the adder
Member, second switch unit is provided between the feedback adjustable gain units and the adder.
In one of the embodiments, the noise spectrum analytic unit be used for according to the low-frequency range of the environmental noise with
The ratio of medium-high frequency section, the gain of the feedback adjustable gain units and the gain of the feedforward adjustable gain units are adjusted,
So that the ratio of the gain of the feedback adjustable gain units and the gain of the feedforward adjustable gain units is equal to the environment
The low-frequency range of noise and the ratio of medium-high frequency section.
In one of the embodiments, the sounding main body includes housing, and the housing, which encloses, sets an inner chamber, the interior intracavitary
Provided with loudspeaker.
In one of the embodiments, the feedforward microphone is on the housing, and the letter of the feedforward microphone
Number receiving terminal is towards the outside of the housing.
In one of the embodiments, the feedback microphones are arranged in the inner chamber.
A kind of earphone, including any of the above-described denoising device, include the audio signal reception end of the connection adder.
In one of the embodiments, the earphone also includes amplifier, the amplifier be connected to the adder and
Between the sounding main body.
In one of the embodiments, the earphone includes headphone or In-Ear Headphones or clip-on type earphone.
A kind of denoising device and earphone provided by the utility model, the environment that outside is collected using feedforward microphone are made an uproar
Sound, feed forward noise reduction circuit carry out the processing of paraphase 180 degree to environmental noise, meanwhile, feedback microphones collect enclosure interior
Noise, the processing of paraphase 180 degree is carried out to the noise of enclosure interior by feedback noise reduction circuit；Noise spectrum analytic unit according to
The low-frequency range of environmental noise and the ratio of medium-high frequency section, the gain and the adjustable increasing of feedforward of corresponding adjustment feedback adjustable gain units
The gain of beneficial unit, and then the environmental noise after Gain tuning and the noise of inside are added by adder, and loudspeaker are superimposed to,
Eliminate the interference to useful sound, low-frequency range and middle medium-high frequency section can either be dropped deep and can enough drops wide, play preferably
Noise reduction.
Brief description of the drawings
Fig. 1 is the connection relationship diagram of the denoising device of the embodiment of the utility model one；
Fig. 2 is the connection relationship diagram of the earphone of the embodiment of the utility model one；
Fig. 3 is the connection relationship diagram of the earphone of the another embodiment of the utility model.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Better embodiment of the present utility model is given in accompanying drawing.But the utility model can come in many different forms
Realize, however it is not limited to embodiments described herein.On the contrary, the purpose for providing these embodiments is to make to this practicality newly
The more thorough and comprehensive that the disclosure of type understands.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " interior ", " outer ", "left", "right" and
For illustrative purposes only, it is unique embodiment to be not offered as similar statement.
Refering to Fig. 1, the utility model embodiment provides a kind of denoising device 10, including：Sounding main body, adder 120,
Feedforward adjustable gain units 130, feedback adjustable gain units 140, feedforward microphone 150, feed forward noise reduction circuit 160, feedback wheat
Gram wind 170, feedback noise reduction circuit 180 and noise spectrum analytic unit 190.Sounding main body includes：Housing (not shown)
With loudspeaker 110, housing, which encloses, sets an inner chamber, and loudspeaker 110 are located in inner chamber.Adder 120 is connected with loudspeaker 110, and feedover adjustable increasing
Beneficial unit 130 and feedback adjustable gain units 140 are connected with adder 120.In certain embodiments, loudspeaker 110 are moving-coil
Loudspeaker, in other embodiments, loudspeaker 110 can also be dynamic iron loudspeaker.Certainly, loudspeaker 110 can also be dynamic iron loudspeaker and move
Enclose the combination of both loudspeaker.
The connection of feed forward noise reduction circuit 160 feedforward adjustable gain units 130 and feedforward microphone 150, feedback noise reduction circuit 180
Connection feedback adjustable gain units 140 and feedback microphones 170.
Feedforward microphone 150 is arranged in sounding main body, for example, offering aperture on housing, feedforward microphone 150 is set
In the inner chamber of housing, and the signal receiving end of feedforward microphone 150 is set towards aperture, to receive the ring of hull outside
Border noise.
Feedback microphones 170 are arranged in sounding main body, for example, feedback microphones 170 are arranged in the inner chamber of housing, instead
The signal receiving end of feedback microphone 170 can be set towards loudspeaker 110, to receive the noise of enclosure interior, both comprising outside
Environmental noise let out into the noise in sounding main body, it is also possible to the sound sent comprising loudspeaker 110.
Noise spectrum analytic unit 190 connects feedforward microphone 150, feedforward adjustable gain units 130 and feedback respectively
Adjustable gain units 140.Noise spectrum analytic unit 190 is for according to environmental noise, (environmental noise to refer to feedforward microphone
150 environmental noises received) low-frequency range and medium-high frequency section ratio, corresponding adjustment feeds back the gain of adjustable gain units 140
And the gain of feedforward adjustable gain units 130.For example, when the low-frequency range sound of environmental noise is more, it is adjustable to heighten feedback
The gain of gain unit 140；When the medium-high frequency section sound of environmental noise is more, the increasing of feedforward adjustable gain units 130 is heightened
Benefit.
The low-frequency range and medium-high frequency section for the environmental noise mentioned in the utility model embodiment be comparatively, this area
Technical staff should not strictly demarcate the low-frequency range of environmental noise and medium-high frequency section.For example, frequency range can be less than
1KHz environmental noise ranges the low-frequency range of environmental noise, and frequency range is sorted out in 1KHz to the environmental noise between 3KHz
In the medium-high frequency section of environmental noise.
In order to reach preferable noise reduction, gain and the feedforward that can adjust feedback adjustable gain units 140 are adjustable
The gain of gain unit 130, to cause the gain and the gain of feedforward adjustable gain units 130 of feeding back adjustable gain units 140
Ratio be equal to environmental noise low-frequency range and medium-high frequency section ratio.For example, the low-frequency range of environmental noise and medium-high frequency section
Ratio is 3：When 2, the gain of adjustable gain units 140 and the gain for the adjustable gain units 130 that feedover are fed back by adjusting, is made
The ratio that gain with the gain of feedforward adjustable gain units 130 of adjustable gain units 140 must be fed back also is 3：2.
Feedforward microphone 150 collects the environmental noise of hull outside, and environmental noise is entered by feed forward noise reduction circuit 160
The processing of row paraphase 180 degree, then the Gain tuning by feedforward adjustable gain units 130；Meanwhile feedback microphones 170 gather
To the noise of enclosure interior, the processing of paraphase 180 degree is carried out to the noise of enclosure interior by feedback noise reduction circuit 180, then pass through
Cross the Gain tuning of feedback adjustable gain units 140.Adder 120 will be after the Gain tuning of adjustable gain units 130 that feedovers
Environmental noise and the enclosure interior after feeding back the Gain tuning of adjustable gain units 140 noise be added, and then be superimposed
To loudspeaker 110, so as to the environmental noise and the noise cancellation of enclosure interior that will penetrate into loudspeaker 110, eliminate to useful sound
Interference, low-frequency range and medium-high frequency section can either be dropped deep and can enough drops wide, play preferable noise reduction.
Drop to meet user to noise reduction depth and/or to drop to obtain wide the needs of flexibly being selected, the utility model is implemented
In example, first switch unit 191 is provided between the adjustable gain units 130 that feedover and adder 120, feeds back adjustable gain units
Second switch unit 192 is provided between 140 and adder 120.For example, in first switch unit 191 and second switch unit 192
During in closure state, meet that deep the needs of dropping wide again drops to obtain in user to noise reduction；It is in first switch unit 191 and disconnects shape
State and when second switch unit 192 is in connected state, meets the needs of user drops deep to noise reduction；In first switch unit
191 in connected state and second switch unit 192 be off when, meet the needs of user drops wide to noise reduction.Need
It is noted that first switch unit 191 and second switch unit 192 are not limited to the mechanical switch such as toggle switch, button switch,
It can also be the contactor by realizations such as triode, metal-oxide-semiconductors.
Refering to Fig. 2, the utility model embodiment also provides a kind of earphone 20, and the earphone 20 includes but is not limited to：Wear-type
Earphone, In-Ear Headphones, clip-on type earphone etc..The earphone 20 includes above-mentioned denoising device 10 and connects the sound of adder 120
Frequency signal receiving end 210.Wherein, audio signal reception end 210 can be provided in the bluetooth module of bluetooth earphone or
2.5mm headset plugs or 3.5mm headphone plug or Lightning headset plugs etc. in wired earphone.
Refering to Fig. 3, the utility model embodiment also provides a kind of earphone 30, and the earphone 30 includes but is not limited to：Wear-type
Earphone, In-Ear Headphones, clip-on type earphone etc..The earphone 30 includes above-mentioned earphone 20 and is connected to adder 120 and loudspeaker
Amplifier 310 between 110.Amplifier 310 be used for by from adder 120 electric signal be amplified processing and its is defeated
Deliver to loudspeaker 110 and be reduced into voice signal.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
- A kind of 1. denoising device, it is characterised in that including：Sounding main body, the adder of the connection sounding main body, the feedforward adjustable gain units and feedback of the connection adder Adjustable gain units；Feedforward microphone, it is arranged in the sounding main body, for receiving the environmental noise of the sounding body exterior；Connect the feed forward noise reduction circuit of the feedforward adjustable gain units and the feedforward microphone；Feedback microphones, it is arranged in the sounding main body, for receiving the noise of the sounding body interior；Connect the feedback noise reduction circuit of the feedback adjustable gain units and the feedback microphones；Noise spectrum analytic unit, the feedforward microphone, the feedforward adjustable gain units and the feedback are connected respectively Adjustable gain units, for the low-frequency range according to the environmental noise and the ratio of medium-high frequency section, the corresponding adjustment feedback can Adjust the gain of gain unit and the gain of the feedforward adjustable gain units.
- 2. denoising device according to claim 1, it is characterised in that the feedforward adjustable gain units and the adder Between be provided with first switch unit, be provided with second switch unit between the feedback adjustable gain units and the adder.
- 3. denoising device according to claim 1 or 2, it is characterised in that the noise spectrum analytic unit is used for basis The low-frequency range of the environmental noise and the ratio of medium-high frequency section, adjust it is described feedback adjustable gain units gain and it is described before The gain of adjustable gain units is presented, so that the gain of the feedback adjustable gain units and the increasing of the feedforward adjustable gain units The ratio of benefit is equal to the low-frequency range of the environmental noise and the ratio of medium-high frequency section.
- 4. denoising device according to claim 1, it is characterised in that the sounding main body includes housing, and the housing encloses If an inner chamber, the interior intracavitary is provided with loudspeaker.
- 5. denoising device according to claim 4, it is characterised in that the feedforward microphone is located on the housing, and The signal receiving end of the feedforward microphone is towards the outside of the housing.
- 6. denoising device according to claim 4, it is characterised in that the feedback microphones are arranged in the inner chamber.
- 7. a kind of earphone, it is characterised in that including the denoising device any one of claim 1 to 6, in addition to connection institute State the audio signal reception end of adder.
- 8. earphone according to claim 7, it is characterised in that the earphone also includes amplifier, the amplifier connection Between the adder and the sounding main body.
- 9. the earphone according to claim 7 or 8, it is characterised in that the earphone includes headphone or In-Ear ear Machine or clip-on type earphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720297493.9U CN206713027U (en) | 2017-03-24 | 2017-03-24 | Denoising device and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720297493.9U CN206713027U (en) | 2017-03-24 | 2017-03-24 | Denoising device and earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206713027U true CN206713027U (en) | 2017-12-05 |
Family
ID=60467139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720297493.9U Active CN206713027U (en) | 2017-03-24 | 2017-03-24 | Denoising device and earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206713027U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109151643A (en) * | 2018-09-07 | 2019-01-04 | 歌尔科技有限公司 | Earphone and headphone unit |
| CN110610693A (en) * | 2019-08-09 | 2019-12-24 | 漳州立达信光电子科技有限公司 | Weighted mixed type active anti-noise system and controller |
| CN110870819A (en) * | 2018-09-03 | 2020-03-10 | 中国石油化工股份有限公司 | Ear protector based on active noise reduction technology and application thereof |
| CN110972007A (en) * | 2019-10-30 | 2020-04-07 | 上海集研机电科技有限公司 | Active earphone noise reduction method suitable for ship high-noise scene |
| CN113556654A (en) * | 2021-07-16 | 2021-10-26 | RealMe重庆移动通信有限公司 | Audio data processing method and device and electronic equipment |
| CN118474630A (en) * | 2024-07-09 | 2024-08-09 | 江西红声技术有限公司 | Active noise reduction circuit based on high noise environment |
-
2017
- 2017-03-24 CN CN201720297493.9U patent/CN206713027U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110870819A (en) * | 2018-09-03 | 2020-03-10 | 中国石油化工股份有限公司 | Ear protector based on active noise reduction technology and application thereof |
| CN109151643A (en) * | 2018-09-07 | 2019-01-04 | 歌尔科技有限公司 | Earphone and headphone unit |
| CN109151643B (en) * | 2018-09-07 | 2024-09-06 | 歌尔科技有限公司 | Earphone and earphone unit |
| CN110610693A (en) * | 2019-08-09 | 2019-12-24 | 漳州立达信光电子科技有限公司 | Weighted mixed type active anti-noise system and controller |
| CN110610693B (en) * | 2019-08-09 | 2022-04-05 | 漳州立达信光电子科技有限公司 | Weighted mixed type active anti-noise system and controller |
| CN110972007A (en) * | 2019-10-30 | 2020-04-07 | 上海集研机电科技有限公司 | Active earphone noise reduction method suitable for ship high-noise scene |
| CN113556654A (en) * | 2021-07-16 | 2021-10-26 | RealMe重庆移动通信有限公司 | Audio data processing method and device and electronic equipment |
| WO2023284438A1 (en) * | 2021-07-16 | 2023-01-19 | RealMe重庆移动通信有限公司 | Audio data processing method and apparatus, and electronic device |
| CN118474630A (en) * | 2024-07-09 | 2024-08-09 | 江西红声技术有限公司 | Active noise reduction circuit based on high noise environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206713027U (en) | Denoising device and earphone | |
| CN106937196B (en) | Hearing device | |
| US10051357B2 (en) | Pressure equalization in earphones | |
| CN104602155B (en) | Wireless noise reducing earphone based on intelligent mobile terminal | |
| CN108370465B (en) | Headset device comprising at least one earpiece | |
| US8184821B2 (en) | Acoustic transducer device | |
| CN104754436B (en) | Active noise reduction method and noise reduction earphone | |
| CN112637724B (en) | Earphone noise reduction method, system and storage medium | |
| CN206713019U (en) | Active noise reducing device and earphone | |
| CN103856861A (en) | Active noise reduction system, noise reduction earphone and mobile terminal | |
| CN110915238A (en) | Speech intelligibility enhancement system | |
| US9762991B2 (en) | Passive noise-cancellation of an in-ear headset module | |
| CN106937190A (en) | Terminal, noise cancelling headphone and earphone noise-reduction method | |
| EP3361753A1 (en) | Hearing device incorporating dynamic microphone attenuation during streaming | |
| EP4429267A1 (en) | Earphone having active noise reduction function and active noise reduction method | |
| KR101194923B1 (en) | Earmicrophone | |
| US20090141906A1 (en) | Communication Headset Processing Multiple Audio Inputs | |
| EP2257081B1 (en) | Listening device with two or more microphones | |
| CN109716786B (en) | Active noise cancellation system for earphone | |
| GB2510354A (en) | ANC-enabled earphones with ANC processing performed by host device | |
| CN203968327U (en) | A kind of exempt from extract carry out low coverage dialogue earphone | |
| EP3840402B1 (en) | Wearable electronic device with low frequency noise reduction | |
| US20160173969A1 (en) | Multiple position earphone cable exit | |
| CN102469399A (en) | Noise-reduction hearing aid | |
| CN206481427U (en) | A kind of earphone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 35th floor, block a, Tanglang City, 3333 Liuxian Avenue, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Wanmo acoustics Co.,Ltd. Address before: 518000 14th floor, east block, Tianliao building, Tanglang primary school, Xili Xueyuan Avenue, Nanshan District, Shenzhen City, Guangdong Province Patentee before: 1MORE Inc. |
|
| CP03 | Change of name, title or address |