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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- 230000005236 sound signal Effects 0.000 claims abstract description 90
- 238000005070 sampling Methods 0.000 claims abstract description 30
- 238000003860 storage Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 13
- 238000011946 reduction process Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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 invention relates to an earphone, in particular to a noise reduction earphone and a noise reduction method thereof.
Background
In industrial production and in daily life environments, there is often excessive environmental noise that risks impairing the hearing of workers. The existing noise-proof earplug filters all sounds during noise reduction processing, can reduce the damage of environmental noise to human bodies, but can prevent users from receiving other effective sound information under the noise environment, and prevent normal communication and even cause danger.
Disclosure of Invention
The invention provides a noise reduction earphone and a noise reduction method thereof, and aims to solve the problem that effective sound information cannot be normally received due to the fact that all sounds are filtered when noise is reduced.
In order to solve the above technical problem, the present invention provides a noise reduction headphone, comprising: the device comprises a sound processing module and a storage module;
the sound processing module is used for acquiring noise sample information and storing the noise sample information in the storage module in a noise sampling mode; and the voice signal processing module is used for carrying out noise reduction processing on the received voice signal according to the noise sample information and outputting the processed voice signal in a noise reduction mode.
The noise sample information includes a voice frequency segment, a waveform, and an amplitude of the noise sample.
The noise reduction processing of the received sound signal by the sound processing module according to the noise sample information in the noise reduction mode includes:
and performing attenuation processing on the sound signals with the same sound frequency segment and waveform as those of the noise sample, wherein the attenuation amplitude is the amplitude of the noise sample.
In an embodiment of the present invention, the noise reduction earphone further includes a sound input module, and the sound input module is configured to send the sound signal collected by the sound input module to the sound processing module in a noise sampling mode.
The sound input module comprises a microphone and/or an audio input interface used for being connected with the playing terminal.
The sound processing module obtaining the noise sample in the noise sampling mode comprises: and acquiring noise sample information from the sound signal sent by the sound input module in the noise acquisition mode.
In an embodiment of the present invention, the noise reduction earphone further includes a noise sample presetting module, configured to store preset noise sample information;
the sound processing module obtaining the noise sample in the noise sampling mode comprises: and acquiring noise sample information from the noise sample presetting module.
The noise sample information includes a voice frequency segment, a waveform, and an amplitude of the noise sample.
In order to solve the above problem, the present invention further provides a noise reduction method for a noise reduction headphone, including:
acquiring and storing noise sample information in a noise sampling mode;
the noise sample information comprises a voice frequency segment, a waveform and an amplitude of a noise sample;
and in a noise reduction mode, carrying out noise reduction processing on the received sound signal according to the noise sample information.
The noise reduction processing of the received sound signal according to the noise sample information in the noise reduction mode includes:
and performing attenuation processing on the sound signals with the same sound frequency segment and waveform as those of the noise sample, wherein the attenuation amplitude is the amplitude of the noise sample.
In an embodiment of the present invention, the obtaining noise samples in the noise sampling mode includes:
receiving a sound signal in a noise sampling mode;
noise sample information is obtained from the sound signal.
In an embodiment of the present invention, the obtaining, by the sound processing module, a noise sample in the noise sampling mode includes:
and receiving preset noise sample information in a noise acquisition mode.
The invention has the beneficial effects that:
according to the noise reduction earphone and the noise reduction method thereof, noise sample information is acquired and stored in the noise sampling mode, then the noise reduction earphone can work in the noise reduction mode when a sound signal is normally received, and the currently received sound signal is subjected to noise reduction processing and then output according to the stored noise sample information. The noise reduction processing only filters the noise signals matched with the stored noise sample information in the sound signals, and does not influence the normal transmission of other useful sound signals in the sound signals; therefore, the problem that effective sound information cannot be normally received due to the fact that all sounds are filtered when the existing noise reduction is carried out can be effectively solved, damage to hearing of a user can be reduced, requirements of the user can be completely met, and therefore the satisfaction degree of the user can be improved.
Drawings
Fig. 1 is a schematic diagram of a noise reduction process of a noise reduction headphone according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a noise reduction earphone according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a noise reduction earphone according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a noise reduction earphone according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a noise reduction earphone according to a second embodiment of the present invention;
fig. 6 is a first schematic structural diagram of a noise reduction earphone according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a noise reduction headphone according to a third embodiment of the present invention;
fig. 8 is a schematic diagram of a noise reduction process of a noise reduction earphone according to a third embodiment of the present invention;
fig. 9 is a schematic diagram of a noise signal collected in the third embodiment of the present invention;
FIG. 10 is a diagram illustrating stored noise samples according to a third embodiment of the present invention;
FIG. 11 is a schematic diagram of a received audio signal according to a third embodiment of the present invention;
fig. 12 is a schematic diagram of performing noise reduction processing on a received sound signal according to a third embodiment of the present invention.
Detailed Description
According to the noise reduction earphone and the noise reduction method thereof, noise sample information is acquired and stored in a noise sampling mode, then the earphone can work in the noise reduction mode when a sound signal is normally received, and the currently received sound signal is subjected to noise reduction processing according to the stored noise sample information and then is output. At this time, the noise reduction processing only filters the noise signal matched with the stored noise sample information in the sound signal, and does not affect the normal transmission of other useful sound signals in the sound signal. For a better understanding of the present invention, the following detailed description is given in conjunction with the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1, in the present embodiment, a noise reduction method for a noise reduction headphone includes:
step 101: acquiring and storing noise sample information in a noise sampling mode;
step 102: and in the noise reduction mode, carrying out noise reduction processing on the received sound signal according to the stored noise sample information.
In the step 101, the noise sample information may be obtained by acquiring a sound signal in a noise sampling mode, and obtaining the noise sample information from the acquired sound signal, where a specific environment for acquiring the sound signal may be set according to the noise information that needs to be filtered currently; in this embodiment, the sound signal may be collected in a specific environment through a sound input module (including a microphone and/or an audio input interface for connecting with a playback terminal) of the noise reduction earphone; when the sound is collected by the microphone, the sound signal can be collected, wherein the sound signal is self in the current environment or is played by a playing terminal in the current environment; when the sound is collected through the audio input interface, the sound signal sent by the playing terminal which is currently connected with the audio input interface is collected. It should be noted that the collected sound signal may be a noise signal completely, or may be a sound signal including a noise signal and a useful sound signal; when the collected sound signal includes a noise signal and a useful sound signal, the noise signal needs to be stripped from the sound signal and sample information of the noise signal needs to be obtained. The specific stripping manner can be implemented by any conventional manner through software and/or hardware, and is not described herein again.
In the step 101, the noise sample information may be obtained by directly receiving preset noise sample information; the noise sample information can be set according to the noise signal to be filtered. In this embodiment, the noise sample information may be preset and transmitted by a noise sample presetting module of the noise reduction headphone.
In the present embodiment, in the noise sampling mode, the acquired noise sample information includes the voice frequency segment, waveform, and amplitude of the noise sample. In this case, in step 102, performing noise reduction processing on the received audio signal according to the noise sample information in the noise reduction mode includes:
and performing attenuation processing on the sound signals which are the same as the sound frequency section and the waveform of the noise sample in the currently received sound signals, wherein the attenuation amplitude is the amplitude of the noise sample.
Certainly, under some conditions that the requirement for noise reduction is not strict, the noise reduction processing may be performed by, in addition to the above manner, directly adopting a preset attenuation range or performing noise reduction processing on a sound signal according to the attenuation range set in real time in the current environment after the noise signal requiring noise reduction processing is identified from the sound signal based on the sound frequency segment and the waveform of the noise sample, and this processing manner may not completely remove noise, but may also achieve the effect of noise reduction to a certain extent, as long as it can meet the use requirement in the current environment.
In step 102, after performing noise reduction processing on the currently received sound signal, the noise-reduced sound signal may be output to a user through a sound output module (e.g., a handset); when the sound signal needs to be processed in other links, the sound signal after the noise reduction processing can be output to the next link for processing.
Example two:
referring to fig. 2, a schematic structural diagram of the noise reduction earphone provided in this embodiment is shown, which includes: the device comprises a sound processing module and a storage module; wherein,
the sound processing module is used for acquiring noise sample information and storing the acquired noise sample information in the storage module in a noise sampling mode; and the voice processing module is used for carrying out noise reduction processing on the received voice signal according to the noise sample information and outputting the processed voice signal in a noise reduction mode.
In this embodiment, the mode of acquiring the noise sample information by the sound processing module may be to acquire the noise sample information from the acquired sound signal by acquiring the sound signal in a noise sampling mode, and at this time, a specific environment for acquiring the sound signal may be set according to the noise information that needs to be filtered currently; in the present embodiment, please refer to fig. 3, specifically, the noise reduction earphone may include a sound input module to collect a specified sound signal in a specified environment; in this embodiment, the sound input module includes a microphone and/or an audio input interface for connecting with the play terminal; when the sound is collected by the microphone, the sound signal can be collected, wherein the sound signal is self in the current environment or is played by a playing terminal in the current environment; when the audio signal is collected through the audio input interface, the audio signal can be collected, wherein the audio signal is sent by the playing terminal which is currently connected with the audio input interface.
In this embodiment, the mode of acquiring the noise sample information by the sound processing module may also be directly receiving preset noise sample information; the noise sample information can be set according to the noise signal to be filtered. In this embodiment, please refer to fig. 4, the noise sample information may be preset and sent by a noise sample presetting module of the noise reduction earphone. In this embodiment, the noise sample information to be filtered can be stored in the noise sample presetting module in advance through the I/O interface by a computer or other device having the I/O interface. Wherein, the storage module can be directly used as a noise sample presetting module.
In this embodiment, in the noise sampling mode, the noise sample information obtained by the sound processing module includes the sound segment, waveform and amplitude of the noise sample. In the noise reduction mode, the sound processing module receives a sound signal transmitted by a sound input device of the noise reduction earphone, and the noise reduction processing of the received sound signal according to the noise sample information comprises:
and performing attenuation processing on the sound signals which are the same as the sound frequency section and the waveform of the noise sample in the currently received sound signals, wherein the attenuation amplitude is the amplitude of the noise sample.
Certainly, under some conditions that the requirement for noise reduction is not strict, the noise reduction processing of the sound processing module may, in addition to the above-described manner, directly perform noise reduction processing on the sound signal after identifying the noise signal that needs noise reduction processing from the sound signal based on the sound frequency segment and the waveform of the noise sample by using a preset attenuation amplitude or an attenuation amplitude set in real time according to the current environment.
Referring to fig. 5, the noise reduction earphone in this embodiment further includes a sound output module; the sound processing module performs noise reduction processing on the currently received sound signal, and then outputs the sound signal subjected to noise reduction processing to a user through the sound output module (such as a receiver, a loudspeaker and the like); when the sound signal needs to be processed in other links, the sound signal after the noise reduction processing can be output to the next link for processing.
Example three:
it should be noted that, in the present invention, in the noise sampling mode, the manner in which the sound processing module extracts the noise sample information from the collected sound signal may be specifically implemented by various existing software or hardware manners, or may be implemented by a combination of software and hardware. In order to better understand the present invention, a specific implementation manner is taken as an example to further describe the present invention.
Referring to fig. 6, the sound processing module in this embodiment is a digital signal processing module, and the digital signal processing module includes an analog-to-digital converter, a digital signal processor, and a digital-to-analog converter; the analog-to-digital converter is used for converting the received level signal into a digital signal and sending the digital signal to the digital signal processor; the digital signal processor is used for carrying out noise reduction processing on the digital signal according to the existing noise signal sample information and then sending the digital signal to the analog-to-digital converter, and specifically, the noise reduction processing can be realized through a corresponding software module loaded in the digital signal processor; the analog-to-digital converter converts the received digital signal into a level signal and sends the level signal to the sound output module for output. When the digital signal processing module acquires noise sample information in a noise sampling mode, analyzing based on a digital signal noise frequency spectrum sent by an analog-to-digital converter, detecting a covered voice frequency segment, waveform and amplitude, and storing the obtained voice frequency segment, waveform and amplitude in a storage module of the digital signal processing module; at this time, a storage module independent of the sound processing module may still be provided for the earphone, and the digital signal processing module may store the sound frequency segment, waveform and amplitude of the obtained noise sample in the storage module; the specific storage mode can be stored in a specific numerical value or directly in a waveform mode.
In the following, the sound input module shown in fig. 6 is taken as a microphone, and the sound output module is taken as an earphone, for example, please refer to fig. 7. Fig. 8 shows a noise reduction process of the noise reduction earphone, which includes:
step 801: noise sampling is carried out in a noise sampling mode;
in this step, a noise signal may be collected from a set environment through a microphone, please refer to the noise signal shown in fig. 9, and the collected noise is sent to the digital signal processing module for processing; the digital signal processing module 72 analyzes the noise spectrum and detects the sound audio segment, waveform and amplitude covered by the noise spectrum;
step 802: storing noise sample information in a noise sampling mode;
in step 801, after obtaining sample information such as a voice frequency segment, a waveform, and an amplitude, the digital signal processing module stores the sample information in a storage module included therein, where a noise sample stored therein includes information such as the voice frequency segment, the waveform, and the amplitude as shown in fig. 10;
step 803: receiving an acoustic signal in a noise reduction mode;
specifically, the step may receive the audio signal in the noise reduction mode through the microphone, as shown in fig. 11, and send the audio signal to the digital signal processing module;
step 804: carrying out noise reduction processing on a currently received sound signal;
after receiving a sound signal sent by a microphone, a digital signal processing module performs noise reduction processing on the sound signal according to stored noise sample information, specifically performs attenuation processing on the sound signal which is the same as a sound frequency segment and a waveform of a stored noise sample, and the attenuation amplitude is the amplitude of the stored corresponding noise sample; outputting the sound signal after noise reduction after the processing; the process is shown in FIG. 12;
step 804: outputting the sound signal after the noise reduction;
in this embodiment, the sound signal after the noise reduction processing is output to the user through the earphone.
Therefore, the noise reduction earphone provided by the invention can specially filter various specified noise signals by setting different noise samples, so that other useful sound signals except the specified noise signals needing to be filtered are reserved in the final output sound signals, the hearing of a user can be protected, the requirements of the user can be well met, and the satisfaction degree of the user experience is improved.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A noise reducing headphone, characterized by comprising: the device comprises a sound processing module and a storage module;
the sound processing module is used for acquiring noise sample information and storing the noise sample information in the storage module in a noise sampling mode; and the voice signal processing module is used for carrying out noise reduction processing on the received voice signal according to the noise sample information and outputting the processed voice signal in a noise reduction mode.
2. The noise reducing headset of claim 1, further comprising a sound input module for sending sound signals collected by the sound input module to the sound processing module in a noise sampling mode;
the sound processing module obtaining the noise sample in the noise sampling mode comprises: and acquiring noise sample information from the sound signal sent by the sound input module in the noise acquisition mode.
3. The noise reducing headphone of claim 1 further comprising a noise sample presetting module to store preset noise sample information;
the sound processing module obtaining the noise sample in the noise sampling mode comprises: and acquiring noise sample information from the noise sample presetting module.
4. The noise reducing headset of claim 2, wherein the sound input module is further configured to send the received sound signal to the sound processing module in a noise reduction mode.
5. The noise reducing headset of claim 2, wherein the sound input module comprises a microphone and/or an audio input interface for connection with a play terminal.
6. The noise reducing headphone of any of claims 1-5, wherein the noise sample information includes a voice frequency segment, a waveform, and an amplitude of a noise sample; the noise reduction processing of the received sound signal by the sound processing module according to the noise sample information in the noise reduction mode includes:
and performing attenuation processing on the sound signals with the same sound frequency segment and waveform as those of the noise sample, wherein the attenuation amplitude is the amplitude of the noise sample.
7. A noise reduction method for a noise reduction headphone, comprising:
acquiring and storing noise sample information in a noise sampling mode;
and in a noise reduction mode, carrying out noise reduction processing on the received sound signal according to the noise sample information.
8. The method of noise reducing for a noise reducing headphone of claim 7, wherein the obtaining noise samples in the noise sampling mode comprises:
receiving a sound signal in a noise sampling mode;
noise sample information is obtained from the sound signal.
9. The method of noise reducing for a noise reducing headphone of claim 7, wherein the sound processing module obtaining noise samples in a noise sampling mode comprises:
and acquiring preset noise sample information in a noise acquisition mode.
10. The noise reduction method for noise reducing headphones as claimed in any one of claims 7 to 9, wherein the noise sample information includes a voice frequency segment, a waveform, and an amplitude of a noise sample; the performing noise reduction processing on the received sound signal according to the noise sample information in the noise reduction mode includes:
and performing attenuation processing on the sound signals with the same sound frequency segment and waveform as those of the noise sample, wherein the attenuation amplitude is the amplitude of the noise sample.
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| 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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| 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 |
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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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| WO2015058484A1 (en) | 2015-04-30 |
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Application publication date: 20150429 |