CN104581519A - Noise reduction earphone and noise reduction method thereof - Google Patents
Noise reduction earphone and noise reduction method thereof Download PDFInfo
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- CN104581519A CN104581519A CN201310503623.6A CN201310503623A CN104581519A CN 104581519 A CN104581519 A CN 104581519A CN 201310503623 A CN201310503623 A CN 201310503623A CN 104581519 A CN104581519 A CN 104581519A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
- H04R2201/107—Monophonic and stereophonic headphones with microphone for two-way hands free communication
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention discloses a noise reduction earphone and a noise reduction method thereof. Noise sample information is acquired and stored in a noise sampling mode, and then when sound signals are normally received, the noise reduction earphone can work in a noise reduction mode; according to the stored noise sample information, the sound signal which is currently received is subjected to noise reduction processing and then is output. Only a noise signal matched with a stored noise sample in terms of frequency, waveform and amplitude information in the sound signals can be filtered by the noise reduction processing, and normal transmission of other useful sound signals in the sound signals cannot be influenced, so that the problem that effective sound information cannot be normally received due to filtration of all sounds during the noise reduction in the prior art can be effectively solved, the injury to the audition of a user can be reduced, requirements of the user can be completely met, and therefore the satisfaction of the user can be improved.
Description
Technical field
The present invention relates to a kind of earphone, be specifically related to a kind of noise cancelling headphone and noise-reduction method thereof.
Background technology
In industrial production and everyday environments, the excessive ambient noise often existed, these ambient noises have the risk of infringement labourer hearing.And all sound is filtered when noise reduction process by existing noise proot earplug, although the infringement of environmental noise on human body can be reduced, user can be hindered the reception of other effective acoustic informations under noise circumstance, hinder normal communication even to cause danger.
Summary of the invention
The main technical problem to be solved in the present invention is, provides a kind of noise cancelling headphone and noise-reduction method thereof, all sound is filtered the problem causing normally receiving effective acoustic information when solving existing noise reduction.
For solving the problems of the technologies described above, the invention provides a kind of noise cancelling headphone, comprising: acoustic processing module and memory module;
Described acoustic processing module is used under noise samples pattern, obtains noise sample information and is stored in described memory module by described noise sample information; And under noise reduction mode, export after the voice signal received according to described noise sample information butt joint carries out noise reduction process.
Described noise sample information comprises the sound frequency range of noise sample, waveform and amplitude.
The voice signal that described acoustic processing module receives according to described noise sample information butt joint under noise reduction mode carries out noise reduction process and comprises:
To in described voice signal, the voice signal identical with waveform with the sound frequency range of described noise sample carries out attenuation processing, and attenuation amplitude is the amplitude of described noise sample.
In an embodiment of the present invention, described noise cancelling headphone also comprises Speech input module, and described Speech input module is used for sending its voice signal collected to described acoustic processing module under noise samples pattern.
Described Speech input module comprises microphone and/or the audio input interface for being connected with playback terminal.
Described acoustic processing module obtains noise sample and comprises under noise samples pattern: from the voice signal that described Speech input module sends under Noise Acquisition pattern, obtain noise sample information.
In an embodiment of the present invention, described noise cancelling headphone also comprises noise sample preset module, for storing preset noise sample information;
Described acoustic processing module obtains noise sample and comprises under noise samples pattern: obtain noise sample information from described noise sample preset module.
Described noise sample information comprises the sound frequency range of noise sample, waveform and amplitude.
In order to solve the problem, present invention also offers a kind of noise-reduction method of noise cancelling headphone, comprising:
Under noise samples pattern, obtain and store noise sample information;
Described noise sample information comprises the sound frequency range of noise sample, waveform and amplitude;
Under noise reduction mode, carry out noise reduction process according to the voice signal that described noise sample information butt joint receives.
The voice signal received according to described noise sample information butt joint under noise reduction mode carries out noise reduction process and comprises:
To in described voice signal, the voice signal identical with waveform with the sound frequency range of described noise sample carries out attenuation processing, and attenuation amplitude is the amplitude of described noise sample.
In an embodiment of the present invention, describedly under noise samples pattern, obtain noise sample comprise:
Voice signal is received under noise samples pattern;
Noise sample information is obtained from described voice signal.
In an embodiment of the present invention, described acoustic processing module obtains noise sample and comprises under noise samples pattern:
Preset noise sample information is received under Noise Acquisition pattern.
The invention has the beneficial effects as follows:
Noise cancelling headphone provided by the invention and noise-reduction method thereof, by obtaining under noise samples pattern and storing noise sample information, then when normal reception voice signal, it can be made to be operated in noise reduction mode under, according to the noise sample information stored, export after noise reduction process is carried out to the voice signal be currently received.Now carried out noise reduction process only can by voice signal with the noise signal filtering of noise sample information matches stored, the normal transmission of other wanted sound signals in voice signal can't be affected; All sound is filtered the problem causing normally receiving effective acoustic information when therefore effectively can solve existing noise reduction, the infringement to user's hearing can be reduced, the demand of user can be met again completely, therefore can improve the satisfaction of user.
Accompanying drawing explanation
Fig. 1 is the noise reduction schematic flow sheet of noise cancelling headphone in the embodiment of the present invention one;
Fig. 2 is the structural representation one of noise cancelling headphone in the embodiment of the present invention two;
Fig. 3 is the structural representation two of noise cancelling headphone in the embodiment of the present invention two;
Fig. 4 is the structural representation three of noise cancelling headphone in the embodiment of the present invention two;
Fig. 5 is the structural representation four of noise cancelling headphone in the embodiment of the present invention two;
Fig. 6 is the structural representation one of noise cancelling headphone in the embodiment of the present invention three;
Fig. 7 is the structural representation two of noise cancelling headphone in the embodiment of the present invention three;
Fig. 8 is the noise reduction schematic flow sheet of noise cancelling headphone in the embodiment of the present invention three;
Fig. 9 is the noise signal schematic diagram gathered in the embodiment of the present invention three;
Figure 10 is the noise signal sample schematic diagram stored in the embodiment of the present invention three;
Figure 11 receives voice signal schematic diagram in the embodiment of the present invention three;
Figure 12 is to the schematic diagram receiving voice signal and carry out noise reduction process in the embodiment of the present invention three.
Embodiment
Noise cancelling headphone provided by the invention and noise-reduction method thereof, by obtaining under noise samples pattern and storing noise sample information, then under can being operated in noise reduction mode when normal reception voice signal, according to the noise sample information stored, export after noise reduction process is carried out to the voice signal be currently received.Now carried out noise reduction process only can by voice signal with the noise signal filtering of noise sample information matches stored, the normal transmission of other wanted sound signals in voice signal can't be affected.For a better understanding of the present invention, by reference to the accompanying drawings the present invention is described in further detail below by embodiment.
Embodiment one:
Shown in Figure 1, in the present embodiment, the noise-reduction method of noise cancelling headphone comprises:
Step 101: under noise samples pattern, obtains and stores noise sample information;
Step 102: under noise reduction mode, carries out noise reduction process according to the voice signal that the noise sample information butt joint stored receives.
In above-mentioned steps 101, the mode obtaining noise sample information can be by collected sound signal under noise samples pattern, from the voice signal gathered, obtain noise sample information, the noise information that now can filter out according to current needs, sets the environment of specific collected sound signal; In the present embodiment, specifically by Speech input module (comprising microphone and/or the audio input interface for being connected with the playback terminal) collected sound signal under the environment of specifying of noise cancelling headphone; When being gathered by microphone, it can gather current environment self or the voice signal that the playback terminal in current environment plays out; When being gathered by audio input interface, what it gathered is the voice signal that playback terminal that audio input interface is current connected sends.It should be noted that now gathered voice signal can be noise signal completely, can also be the voice signal comprising noise signal and wanted sound signal; When the voice signal gathered comprises noise signal and useful voice signal, need from this voice signal, separate noise signal and obtain its sample information.Concrete stripping mode can adopt the existing any-mode by software and/or hardware all can realize, and does not repeat them here.
In above-mentioned steps 101, the mode obtaining noise sample information can also be directly receive preset noise sample information; This noise sample information can according to specific needs filtering noise signal setting.In the present embodiment, can be preset and send noise sample information by the noise sample preset module of noise cancelling headphone.
In the present embodiment, under noise samples pattern, the noise sample information obtained comprises the sound frequency range of noise sample, waveform and amplitude.Now, in above-mentioned steps 102, the voice signal received according to noise sample information butt joint under noise reduction mode carries out noise reduction process and comprises:
To in the voice signal be currently received, the voice signal identical with waveform with the sound frequency range of noise sample carries out attenuation processing, and attenuation amplitude is the amplitude of noise sample.
Certainly, some to noise reduction require and under undemanding condition, noise reduction process is except employing aforesaid way, after also can identifying based on the sound frequency range of noise sample and waveform the noise signal needing noise reduction process from voice signal, the attenuation amplitude that direct employing presets or noise reduction process is carried out to it according to the attenuation amplitude that current environment sets in real time, this processing mode might not thoroughly denoising, but also can reach the effect of noise reduction to a certain extent, as long as its instructions for use that can meet current environment is also fine.
In above-mentioned steps 102, after noise reduction process is carried out to the voice signal of current reception, specifically the voice signal after noise reduction process can be exported to user through voice output module (such as receiver); When also needing to carry out the process of other links to this voice signal, specifically the voice signal after noise reduction process can be exported to next link and processing.
Embodiment two:
Shown in Figure 2, this figure is depicted as the structural representation of the noise cancelling headphone that the present embodiment provides, and it comprises: acoustic processing module and memory module; Wherein,
Acoustic processing module is used under noise samples pattern, obtains noise sample information and the noise sample information obtained is stored in a storage module; And under noise reduction mode, export after the voice signal received according to noise sample information butt joint carries out noise reduction process.
In the present embodiment, the mode that acoustic processing module obtains noise sample information can be by collected sound signal under noise samples pattern, noise sample information is obtained from the voice signal gathered, the noise information that now can filter out according to current needs, sets the environment of specific collected sound signal; In the present embodiment, shown in Figure 3, the Speech input module specifically comprised by noise cancelling headphone gathers the voice signal of specifying under the environment of specifying; In the present embodiment, Speech input module comprises microphone and/or the audio input interface for being connected with playback terminal; When being gathered by microphone, it can gather current environment self or the voice signal that the playback terminal in current environment plays out; When being gathered by audio input interface, it can gather the voice signal that current the connected playback terminal of audio input interface sends.
In the present embodiment, the mode that acoustic processing module obtains noise sample information can also be directly receive preset noise sample information; This noise sample information can according to specific needs filtering noise signal setting.In the present embodiment, shown in Figure 4, can be preset and send noise sample information by the noise sample preset module of noise cancelling headphone.In the present embodiment, the equipment containing I/O interface by computer etc. will need the noise sample information of filtering, will be stored in advance in noise sample preset module by I/O interface.Wherein, can directly use memory module as noise sample preset module.
In the present embodiment, under noise samples pattern, the noise sample information of acoustic processing module acquisition comprises the sound frequency range of noise sample, waveform and amplitude.Under noise reduction mode, the voice signal that the acoustic input dephonoprojectoscope that acoustic processing module receives noise cancelling headphone sends, it carries out noise reduction process according to the voice signal that noise sample information butt joint receives and comprises:
To in the voice signal be currently received, the voice signal identical with waveform with the sound frequency range of noise sample carries out attenuation processing, and attenuation amplitude is the amplitude of noise sample.
Certainly, some to noise reduction require and under undemanding condition, acoustic processing module noise reduction process is except employing aforesaid way, after also can identifying based on the sound frequency range of noise sample and waveform the noise signal needing noise reduction process from voice signal, the attenuation amplitude that direct employing one presets or noise reduction process is carried out to it according to the attenuation amplitude that current environment sets in real time, this processing mode might not completely denoising, but also can reach the effect of noise reduction to a certain extent, as long as its instructions for use that can meet current environment is also fine.
Shown in Figure 5, the noise cancelling headphone in the present embodiment also comprises voice output module; After acoustic processing module carries out noise reduction process to the voice signal of current reception, the voice signal after noise reduction process can be exported to user through voice output module (such as receiver, loud speaker etc.); When also needing to carry out the process of other links to this voice signal, specifically the voice signal after noise reduction process can be exported to next link and processing.
Embodiment three:
The attention of value yes, in the present invention, under noise samples pattern, the mode that acoustic processing module proposes noise sample information from the voice signal gathered specifically realizes by the mode of existing various software or hardware, and the mode also by software and hardware combining realizes.For a better understanding of the present invention, below for a kind of concrete implementation, the present invention is described further.
Shown in Figure 6, the acoustic processing module in the present embodiment is digital signal processing module, and this digital signal processing module comprises analog to digital converter, digital signal processor and digital to analog converter; Wherein analog to digital converter is used for converting the level signal received to digital signal, and sends to digital signal processor; Digital signal processor sends to analog to digital converter after being used for carrying out noise reduction process according to the noise signal sample information existed to this digital signal, specifically realizes noise reduction process by its inner corresponding software module loaded; Analog to digital converter converts the digital signal received to level signal and issues voice output module to export.Digital signal processing module is when noise samples pattern acquiring noise sample information, the digital signal noise frequency spectrum then sent based on analog to digital converter is analyzed, detect its sound frequency range covered, waveform and amplitude, and the sound frequency range, waveform and the amplitude that obtain are stored in the memory module himself comprised; Certainly now still can be earphone arranges a memory module independent of acoustic processing module, and the sound frequency range of the noise sample obtained, waveform and amplitude can be stored in this memory module by digital signal processing module; Concrete storage mode can be concrete numerical value or directly store in the mode of waveform.
Below with the Speech input module shown in Fig. 6 for microphone, voice output module is receiver is that example is described, shown in Figure 7.Now the noise reduction process of noise cancelling headphone is shown in Figure 8, and it comprises:
Step 801: carry out noise samples under noise samples pattern;
This step specifically by microphone acquisition noise signal from the environment of setting, noise signal shown in Figure 9, and send to digital signal processing module to process the noise of collection; Digital signal processing module 72 pairs of noise spectrums are analyzed, and detect its sound frequency range covered, waveform and amplitude;
Step 802: in noise samples pattern storage noise sample information;
In step 801, after digital signal processing module obtains sound frequency range, waveform and amplitude equal samples information, be stored in it memory module comprised, its noise sample stored as shown in Figure 10, comprises the information such as sound frequency range, waveform and amplitude;
Step 803: under noise reduction mode, receives voice signal;
This step specifically receives voice signal by microphone under noise reduction mode, as shown in figure 11, and sends to digital signal processing module;
Step 804: noise reduction process is carried out to the voice signal be currently received;
After this step digital signal processing module receives the voice signal that microphone sends over, according to the noise sample information that it stores, noise reduction process is carried out to this voice signal, be specially and carry out attenuation processing to voice signal identical with waveform with the sound frequency range of the noise sample stored in this voice signal, attenuation amplitude is the amplitude of the noise sample of the correspondence stored; Carry out above-mentioned process and export the voice signal after noise reduction process afterwards; This process is shown in Figure 12;
Step 804: the voice signal after noise reduction process is exported;
By receiver, the voice signal after noise reduction process is exported to user in the present embodiment.
Visible; noise cancelling headphone provided by the invention; by arranging the various designated noise signal of the special filtering of different noise sample; make in final output sound signal, to retain other wanted sound signals except specifying and needing the noise signal of filtering; the hearing of user can be protected; be well positioned to meet again the requirement of user, improve the satisfaction that user experiences.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a noise cancelling headphone, is characterized in that comprising: acoustic processing module and memory module;
Described acoustic processing module is used under noise samples pattern, obtains noise sample information and is stored in described memory module by described noise sample information; And under noise reduction mode, export after the voice signal received according to described noise sample information butt joint carries out noise reduction process.
2. noise cancelling headphone as claimed in claim 1, it is characterized in that, described noise cancelling headphone also comprises Speech input module, and described Speech input module is used for sending its voice signal collected to described acoustic processing module under noise samples pattern;
Described acoustic processing module obtains noise sample and comprises under noise samples pattern: from the voice signal that described Speech input module sends under Noise Acquisition pattern, obtain noise sample information.
3. noise cancelling headphone as claimed in claim 1, it is characterized in that, described noise cancelling headphone also comprises noise sample preset module, for storing preset noise sample information;
Described acoustic processing module obtains noise sample and comprises under noise samples pattern: obtain noise sample information from described noise sample preset module.
4. noise cancelling headphone as claimed in claim 2, it is characterized in that, the voice signal received also under noise reduction mode, is sent to described acoustic processing module by described Speech input module.
5. noise cancelling headphone as claimed in claim 2, it is characterized in that, described Speech input module comprises microphone and/or the audio input interface for being connected with playback terminal.
6. the noise cancelling headphone as described in any one of claim 1-5, is characterized in that, described noise sample information comprises the sound frequency range of noise sample, waveform and amplitude; The voice signal that described acoustic processing module receives according to described noise sample information butt joint under noise reduction mode carries out noise reduction process and comprises:
To in described voice signal, the voice signal identical with waveform with the sound frequency range of described noise sample carries out attenuation processing, and attenuation amplitude is the amplitude of described noise sample.
7. a noise-reduction method for noise cancelling headphone, is characterized in that comprising:
Under noise samples pattern, obtain and store noise sample information;
Under noise reduction mode, carry out noise reduction process according to the voice signal that described noise sample information butt joint receives.
8. the noise-reduction method of noise cancelling headphone as claimed in claim 7, is characterized in that, describedly under noise samples pattern, obtains noise sample comprise:
Voice signal is received under noise samples pattern;
Noise sample information is obtained from described voice signal.
9. the noise-reduction method of noise cancelling headphone as claimed in claim 7, it is characterized in that, described acoustic processing module obtains noise sample and comprises under noise samples pattern:
Preset noise sample information is obtained under Noise Acquisition pattern.
10. the noise-reduction method of the noise cancelling headphone as described in any one of claim 7-9, is characterized in that, described noise sample information comprises the sound frequency range of noise sample, waveform and amplitude; The described voice signal received according to described noise sample information butt joint under noise reduction mode carries out noise reduction process and comprises:
To in described voice signal, the voice signal identical with waveform with the sound frequency range of described noise sample carries out attenuation processing, and attenuation amplitude is the amplitude of described noise sample.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310503623.6A CN104581519A (en) | 2013-10-23 | 2013-10-23 | Noise reduction earphone and noise reduction method thereof |
| PCT/CN2014/073386 WO2015058484A1 (en) | 2013-10-23 | 2014-03-13 | Noise reducing earphone and noise reducing method thereof |
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| CN201310503623.6A CN104581519A (en) | 2013-10-23 | 2013-10-23 | Noise reduction earphone and noise reduction method thereof |
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| CN108847208A (en) * | 2018-05-04 | 2018-11-20 | 歌尔科技有限公司 | A kind of noise reduction process method, apparatus and earphone |
| CN108882073A (en) * | 2018-06-19 | 2018-11-23 | 倬韵科技（深圳）有限公司 | A kind of method, apparatus, earphone and mobile terminal that the wind inhibiting microphone is made an uproar |
| CN108882092A (en) * | 2018-07-03 | 2018-11-23 | 歌尔智能科技有限公司 | A kind of earphone noise-reduction method and feedback noise reduction system |
| CN109314814A (en) * | 2018-09-11 | 2019-02-05 | 深圳市汇顶科技股份有限公司 | Active denoising method and earphone |
| US10978041B2 (en) | 2015-12-17 | 2021-04-13 | Huawei Technologies Co., Ltd. | Ambient sound processing method and device |
| CN113825068A (en) * | 2021-09-29 | 2021-12-21 | 联想(北京)有限公司 | Audio processing method and microphone device |
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| CN110708625A (en) * | 2019-09-25 | 2020-01-17 | 华东师范大学 | Intelligent terminal-based environment sound suppression and enhancement adjustable earphone system and method |
| CN112887856B (en) * | 2021-01-25 | 2023-03-24 | 湖南普奇水环境研究院有限公司 | Sound processing method and system for reducing noise |
| CN114125634A (en) * | 2021-11-26 | 2022-03-01 | 东莞市逸音电子科技有限公司 | Bluetooth headset, noise reduction method of Bluetooth headset and intelligent readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10978041B2 (en) | 2015-12-17 | 2021-04-13 | Huawei Technologies Co., Ltd. | Ambient sound processing method and device |
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| CN113825068A (en) * | 2021-09-29 | 2021-12-21 | 联想(北京)有限公司 | Audio processing method and microphone device |
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| Publication number | Publication date |
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| WO2015058484A1 (en) | 2015-04-30 |
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Application publication date: 20150429 |