CN106535027B - Device for monitoring noise reduction effect of noise reduction earphone and active noise reduction earphone capable of adjusting noise reduction effect - Google Patents
Device for monitoring noise reduction effect of noise reduction earphone and active noise reduction earphone capable of adjusting noise reduction effect Download PDFInfo
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- CN106535027B CN106535027B CN201611261353.2A CN201611261353A CN106535027B CN 106535027 B CN106535027 B CN 106535027B CN 201611261353 A CN201611261353 A CN 201611261353A CN 106535027 B CN106535027 B CN 106535027B
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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
Abstract
The invention relates to the technical field of earphones, in particular to noise reduction monitoring devices and active noise reduction earphones, wherein the noise reduction monitoring devices are arranged in the active noise reduction earphones, directly monitor and acquire noise signals before and after noise reduction, and visually judge the noise reduction effect of the noise reduction earphones according to the comparison result of the noise signal A and the noise signal B which are matched with each other in generation time.
Description
Technical Field
The invention relates to the technical field of earphones, in particular to an device for monitoring the noise reduction effect of a noise reduction earphone and an active noise reduction earphone capable of adjusting the noise reduction effect.
Background
The noise reduction function of the noise reduction earphone is divided into active noise reduction and passive noise reduction, the principle of the active noise reduction is to collect noise of the surrounding environment, then equal opposite-phase noise signals are generated to counteract the noise, so that the noise reduction effect is achieved, the passive noise reduction is to cover ears by earcaps, the sound tightness between the earphone and ear canals is enhanced, and external noise is prevented from entering.
Disclosure of Invention
The present invention aims to avoid the above-mentioned disadvantages of the prior art and to provide devices which can objectively monitor the noise reduction effect of a noise reduction headphone.
In order to achieve the above object, the present invention provides kinds of devices for monitoring noise reduction effect of noise reduction earphones, including a noise reduction device, a signal acquisition module, a data processing module and a data analysis module;
the signal acquisition module comprises a front-end noise signal acquisition module and a rear-end noise signal acquisition module, wherein noise at a certain moment is acquired by the front-end noise signal acquisition module to generate a noise signal A, noise is reduced by the noise reduction device and then acquired by the rear-end noise signal acquisition module to generate a noise signal B, and the noise signal A and the noise signal B are output to the data processing module in real time;
the data processing module outputs the received noise signal B and a noise signal A corresponding to the received noise signal B to the data analysis module;
and the data analysis module compares and analyzes the received noise signal A and the received noise signal B and outputs a comparison result signal.
The mobile terminal comprises a signal transmission module, and the comparison result signal is transmitted to display equipment and/or a mobile terminal.
And the display equipment or the mobile terminal outputs a visual comparison graph according to the received comparison result signal.
The visual comparison graph refers to a waveform representing the difference between the signal intensity of the noise signal A and the signal intensity of the noise signal B.
Wherein, the signal transmission module is a wireless transmission module or a Bluetooth transmission module.
The front-end noise signal acquisition module and the rear-end noise signal acquisition module are respectively microphones placed at the noise signal input end and the noise signal output end of the noise reduction device.
The noise reduction device is an active noise reduction circuit which outputs an inverse noise signal according to an input noise signal, and the adjusting module adjusts the intensity of the inverse noise signal output by the active noise reduction circuit according to the selection of a user.
Wherein, the noise reduction device is an active noise reduction circuit or a passive noise reduction earmuff.
The device for monitoring the noise reduction effect of the noise reduction earphone directly monitors and acquires the noise signals before and after noise reduction, and visually judges the noise reduction effect of the noise reduction earphone according to the comparison result of the noise signal A and the noise signal B which are matched with each other in generation time. The device for monitoring the noise reduction effect of the noise reduction earphone is simple in structure and has good noise reduction effect monitoring performance.
The active noise reduction earphones with adjustable noise reduction effects are also provided, wherein a device for monitoring the noise reduction effect of the noise reduction earphones, which comprises an adjusting module, is arranged in the active noise reduction earphones, and when a user selects an external environment when using the noise reduction earphones in different environments such as public transportation, gymnasiums and the like, the active noise reduction earphones can identify the change of the requirement of the user on the noise reduction effect, and can adjust the intensity of the reversed phase noise signal output by the active noise reduction circuit, so that the noise reduction effect matched with the use environment is provided for the user.
Drawings
Fig. 1 is a block diagram of a device for monitoring the noise reduction effect of a noise reduction earphone.
Fig. 2 is a schematic structural diagram of a device for monitoring the noise reduction effect of a noise reduction earphone.
Fig. 3 is a schematic structural diagram of a noise reduction headphone based on a device for monitoring the noise reduction effect of the noise reduction headphone.
Detailed Description
The invention creation is further described in connection with the following examples.
As shown in FIGS. 1-3, the device for monitoring noise reduction effect of noise reduction earphone of this embodiment comprises an active noise reduction circuit or a passive noise reduction ear shell as a noise reduction device, a signal acquisition module, a data processing module and a data analysis module, wherein the signal acquisition module comprises an external microphone 1 for acquiring an external noise signal from a noise source from a signal input end of the noise reduction module, namely a front-end noise signal acquisition module for acquiring a noise signal A before noise reduction by the noise reduction device, and an internal microphone 2 for acquiring an internal noise signal from a signal output end of the noise reduction module, namely a rear-end noise signal acquisition module for acquiring a noise signal B after noise reduction by the noise reduction device, wherein the noise signal A and the noise signal B are output to a data processing chip as the data processing module in real time, the data processing chip receives and stores the noise signal B and the noise signal A as internal and external noise signals in real time, the data processing chip immediately selects the noise signal B acquired by the external microphone before noise reduction device, then outputs the noise signal A as data analysis module , compares the data analysis result of the noise signal B and the noise signal A, compares the noise signal A, and displays the comparison result of the noise signal, or compares the comparison result of the noise signal A, and displays the comparison result of the noise signal, and the comparison result of the comparison of the noise signal, and the comparison of the noise signal A, the comparison of the comparison terminal, and the comparison of the noise signal, and the comparison of the comparison terminal, and the display device, and the comparison.
The device for monitoring the noise reduction effect of the noise reduction earphone is simple in structure, noise signals before and after noise reduction are directly monitored and obtained, noise signals A and noise signals B before and after noise reduction of the noise reduction device is carried out through collecting noise at the moment, the currently received noise signals B and the noise signals A corresponding to the currently received noise signals B are output to the data analysis module, the noise signals are analyzed by the data analysis module and then sent to the display device or the mobile terminal, real-time monitoring of the noise reduction effect is achieved, and good noise reduction effect monitoring performance is achieved.
The noise reduction frequency band of the active noise reduction earphone on the current market is concentrated in a low frequency range below 1kHz, the voice frequency band is not completely covered, and the noise reduction requirements of different noise environments cannot be met, the noise reduction module of the active noise reduction earphone comprises a signal input end connected with a data analysis chip, a signal output end connected with an adjusting module of the signal input end of the active noise reduction circuit, a user or a monitoring person selects a noise reduction environment on intelligent equipment, or selects the noise reduction environment through a toggle switch on the earphone, the adjusting module of the active noise reduction earphone correspondingly adjusts the intensity of the reverse phase noise signal output by the active noise reduction circuit according to the environment selected by the user or the monitoring person, changes the main noise reduction frequency band of the noise reduction earphone or the noise reduction degree of the noise reduction earphone, so as to adapt to different noise reduction requirements, for mainly reducing the noise of a fitness building environment, only reducing the noise of public traffic sounds in the public traffic environment and the like, and only reducing the noise of the public traffic accidents caused by the noise reduction frequency band at any time, so as to avoid the noise reduction accidents caused by the public traffic accidents.
This earphone of making an uproar falls in initiative embeds has the device of the earphone noise reduction effect of making an uproar including the monitoring of adjustment module, when the user uses the earphone of making an uproar of falling under different environment such as public transport, gymnasium, dial the button switch on the earphone or select external environment at mobile terminal's control interface, this earphone of making an uproar falls in initiative discerns the change of user to the noise reduction effect demand, just can adjust the reverse phase noise signal intensity of the circuit output of making an uproar falls in the initiative, for the user provides the noise reduction effect who matches with service environment.
Claims (9)
- The device for monitoring the noise reduction effect of the noise reduction earphone is characterized by comprising a noise reduction device, a signal acquisition module, a data processing module and a data analysis module;the signal acquisition module comprises a front-end noise signal acquisition module and a rear-end noise signal acquisition module, wherein noise at a certain moment is acquired by the front-end noise signal acquisition module to generate a noise signal A, noise is reduced by the noise reduction device and then acquired by the rear-end noise signal acquisition module to generate a noise signal B, and the noise signal A and the noise signal B are output to the data processing module in real time;the data processing module outputs the received noise signal B and a noise signal A corresponding to the received noise signal B to the data analysis module;and the data analysis module compares and analyzes the received noise signal A and the received noise signal B, outputs a comparison result signal and outputs the noise reduction effect of the noise reduction earphone according to the comparison result signal.
- 2. The device of monitoring noise reduction effect of noise reduction earphones according to claim 1, wherein the device comprises a signal transmission module for transmitting the comparison result signal to a display device and/or a mobile terminal.
- 3. The apparatus of claim 2, wherein the display device or the mobile terminal outputs a visual comparison graph according to the comparison result signal.
- 4. The apparatus for monitoring noise reduction of a noise reduction earphone of claim 3, wherein the visual alignment graph is a waveform representing the difference of signal intensity of a noise signal A and a noise signal B.
- 5. The device for monitoring noise reduction effect of noise reduction earphone according to claim 2, wherein the signal transmission module is a wireless transmission module or a Bluetooth transmission module.
- 6. The device of monitoring noise reduction effect of a noise reduction earphone of claim 1, wherein the front end noise signal collection module and the back end noise signal collection module are microphones respectively disposed at a noise signal input end and an output end of the noise reduction device.
- 7. The device for monitoring noise reduction effect of a noise reduction earphone as claimed in any of claims 1-6, wherein the device comprises a signal input terminal connected to the data analysis module, and a signal output terminal connected to an adjustment module of the noise reduction device, the noise reduction device is an active noise reduction circuit for outputting an inverse noise signal according to an input noise signal, and the adjustment module adjusts intensity of the inverse noise signal output by the active noise reduction circuit according to user's selection.
- 8. The device of monitoring noise reduction of a noise reducing headphone of claim 1, wherein the noise reducing device is an active noise reducing circuit or a passive noise reducing ear cup.
- 9. Active noise reducing headphone with adjustable noise reduction effect, characterized in that it comprises the device for monitoring noise reduction effect of noise reducing headphone of claim 7.
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| CN108040315A (en) * | 2017-10-23 | 2018-05-15 | 广东思派康电子科技有限公司 | A kind of test machine of computer-readable recording medium and the application medium |
| US11706559B2 (en) * | 2017-11-07 | 2023-07-18 | 3M Innovative Properties Company | Replaceable sound attenuating device detection |
| CN109819362A (en) * | 2017-11-21 | 2019-05-28 | 深圳市冠旭电子股份有限公司 | Sound collection circuit and bluetooth headset |
| CN107948789B (en) * | 2017-11-30 | 2019-03-05 | 会听声学科技（北京）有限公司 | Active noise reduction headset designs system and method based on cloud service |
| CN108391193A (en) * | 2018-05-24 | 2018-08-10 | 东莞市猎声电子科技有限公司 | A kind of New intellectual earphone |
| CN108803877A (en) * | 2018-06-11 | 2018-11-13 | 联想(北京)有限公司 | Switching method, device and electronic equipment |
| CN111836147B (en) | 2019-04-16 | 2022-04-12 | 华为技术有限公司 | Noise reduction device and method |
| CN110784790A (en) * | 2019-09-20 | 2020-02-11 | 广东思派康电子科技有限公司 | Noise reduction calibration system of noise reduction earphone |
| CN112566004B (en) * | 2020-12-25 | 2022-07-26 | 百度在线网络技术（北京）有限公司 | Wireless earphone, working state monitoring method and device and storage medium |
| CN113490089B (en) * | 2021-06-02 | 2022-07-29 | 安克创新科技股份有限公司 | Noise reduction control method, electronic device and computer readable storage device |
| CN113573200A (en) * | 2021-08-13 | 2021-10-29 | 惠州市欧凡实业有限公司 | Noise reduction earphone capable of actively balancing ear pressure and active noise reduction method |
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