CN111405406A - Noise reduction method and device for hybrid noise reduction earphone, wireless earphone and storage medium - Google Patents
Noise reduction method and device for hybrid noise reduction earphone, wireless earphone and storage medium Download PDFInfo
- Publication number
- CN111405406A CN111405406A CN202010230792.7A CN202010230792A CN111405406A CN 111405406 A CN111405406 A CN 111405406A CN 202010230792 A CN202010230792 A CN 202010230792A CN 111405406 A CN111405406 A CN 111405406A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- signal
- feedforward
- earphone
- noise
- 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.)
- Granted
Links
Images
Classifications
-
- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17813—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17879—General system configurations using both a reference signal and an error signal
-
- 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
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
-
- 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
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/01—Hearing devices using active noise cancellation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Circuit For Audible Band Transducer (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention discloses a noise reduction method and a noise reduction device for a hybrid noise reduction earphone, a wireless earphone and a computer readable storage medium, wherein the method comprises the following steps: acquiring a wind speed signal acquired by wind energy monitoring equipment; judging whether a wind noise signal in the external environment signal collected by the feedforward microphone is greater than a threshold value or not according to the wind speed signal; if so, carrying out noise reduction by using the loudspeaker playing of the earphone according to the loudspeaker playing signal; according to the invention, the wind noise condition in the external environment signal collected by the feedforward microphone can be determined by utilizing the wind speed signal collected by the wind energy monitoring equipment arranged in the earphone, so that when the wind noise signal in the external environment signal is greater than a threshold value, the work of the feedforward microphone is automatically stopped, and as the feedback microphone is not influenced by wind blowing in the earphone structure, the noise of the earphone can be automatically reduced by utilizing the loudspeaker playing signal collected by the feedback microphone and playing the noise through the loudspeaker of the earphone, so that the wind noise problem of the earphone can be automatically mixed and reduced, and the use experience of a user is improved.
Description
Technical Field
The invention relates to the technical field of portable listening equipment, in particular to a noise reduction method and device of a hybrid noise reduction earphone, a wireless earphone and a computer readable storage medium.
Background
The human living environment is full of noise, and the most frequently encountered noise includes engine noise of vehicles on the street, airplanes, etc., crowd noises, etc., indoor printer operation sound, crowd footsteps sound, mechanical operation sound in special working environments such as construction sites, production workshops, etc., and the like. Noise has adverse effects on a person, and if so, the person may feel irritated, and if so, the hearing may be impaired. The desire for quiet environments and hearing health has prompted the emergence of active noise reduction headsets.
The active noise reduction earphone can be divided into a feedforward noise reduction earphone of feedforward control, a feedback noise reduction earphone of feedback control and a mixed noise reduction earphone of feedforward and feedback mixed control according to a system control mode. Due to the combined action of feedforward and feedback, the hybrid control has high noise reduction efficiency and good noise reduction effect, and gradually becomes a mainstream scheme adopted by the active noise reduction earphone in the market in recent years.
The mixed control of the mixed noise reduction earphone comprises feedforward control and feedback control, the feedforward control and the feedback control are respectively and independently operated and do not influence each other, and the maximum noise reduction amount of the mixed control is approximately equal to the superposition of the maximum noise reduction amount of the feedback control and the feedforward control. Because the feedforward microphone (that is, the feedforward microphone of making an uproar falls in the initiative of hybrid control) is in the earphone structure outside, the user is when going out to use the earphone, thereby is difficult to avoid being blown to receive the influence of wind, produces the wind problem of making an uproar for under the wind condition of blowing, the user hears obvious wind sound, influences the use and experiences.
In the prior art, the hybrid noise reduction earphone is usually realized by methods of avoiding and improving a noise reduction circuit in a pure structure mode and the like; however, because the wind direction is irregular, the pure structure mode of placing the feedforward microphone at the position of the shell where wind is not easy to blow avoids, and wind noise is difficult to completely avoid; and because the energy of wind is mainly concentrated in the low frequency band below 200Hz, the noise reduction circuit is improved by specially designing the low frequency band of the feedforward noise reduction circuit, and although the wind sound heard by a user is not obvious, the residual wind sound still exists. Therefore, how to better avoid the wind noise problem of the hybrid noise reduction earphone and improve the user experience is a problem which needs to be solved urgently nowadays.
Disclosure of Invention
The invention aims to provide a noise reduction method and device of a hybrid noise reduction earphone, a wireless earphone and a computer readable storage medium, so as to avoid the problem of wind noise of the hybrid noise reduction earphone and improve the use experience of a user.
In order to solve the above technical problem, the present invention provides a noise reduction method for a hybrid noise reduction earphone, including:
acquiring a wind speed signal acquired by wind energy monitoring equipment;
judging whether a wind noise signal in the external environment signal collected by the feedforward microphone is greater than a threshold value or not according to the wind speed signal;
if not, carrying out mixed noise reduction by using loudspeaker playing of the earphone according to the external environment signal and a loudspeaker playing signal acquired by the feedback microphone;
and if so, utilizing the loudspeaker playing of the earphone to reduce noise according to the loudspeaker playing signal.
Optionally, the reducing noise by using the speaker playing of the earphone according to the speaker playing signal includes:
and mixing and denoising by using the loudspeaker playing of the earphone according to the loudspeaker playing signal.
Optionally, the mixing and denoising by using the speaker playing of the earphone according to the speaker playing signal includes:
acquiring the loudspeaker playing signal;
acquiring a feedforward replacement signal corresponding to the external environment signal according to the loudspeaker playing signal and the compensation transfer function; wherein the compensation transfer function is a transfer function of an acoustic path between the feedforward microphone and the feedback microphone;
and performing mixed noise reduction by using the loudspeaker playing of the earphone according to the feedforward replacing signal and the loudspeaker playing signal.
Optionally, the obtaining a feedforward replacement signal corresponding to the external environment signal according to the loudspeaker playing signal and the compensation transfer function includes:
outputting the loudspeaker playing signal to a compensation filter to obtain the feedforward replacement signal output by the compensation filter; wherein, the compensation parameter of the compensation filter is 1/Q, and Q is the compensation transfer function.
Optionally, the performing mixed noise reduction by using the speaker playing of the earphone according to the feedforward replacement signal and the speaker playing signal includes:
and controlling a single-pole double-throw change-over switch to connect a feedforward noise reduction circuit and the compensation filter, disconnecting the feedforward noise reduction circuit and the feedforward microphone, outputting the feedforward replacement signal to the feedforward noise reduction circuit, and outputting the loudspeaker playing signal to a feedback noise reduction circuit, so that the output of the feedforward noise reduction circuit and the feedback noise reduction circuit is utilized, and the loudspeaker playing of the earphone is utilized to carry out mixed noise reduction.
Optionally, the determining, according to the wind speed signal, whether wind noise information in the external environment signal collected by the feedforward microphone is greater than a threshold value includes:
judging whether the wind speed corresponding to the wind speed signal is greater than a preset wind speed or not;
if not, executing the step of performing mixed noise reduction by using speaker playing of the earphone according to the external environment signal and the speaker playing signal acquired by the feedback microphone;
and if so, executing the step of reducing the noise by using the loudspeaker playing of the earphone according to the loudspeaker playing signal.
The invention also provides a noise reduction device of the hybrid noise reduction earphone, which comprises:
the acquisition module is used for acquiring a wind speed signal acquired by the wind energy monitoring equipment;
the judging module is used for judging whether a wind noise signal in the external environment signal collected by the feedforward microphone is larger than a threshold value or not according to the wind speed signal;
the first noise reduction module is used for carrying out mixed noise reduction by using loudspeaker playing of an earphone according to the external environment signal and a loudspeaker playing signal acquired by a feedback microphone if the external environment signal is not greater than the threshold value;
and the second noise reduction module is used for reducing noise by using the loudspeaker playing of the earphone according to the loudspeaker playing signal if the second noise reduction module is larger than the threshold value.
Optionally, the second noise reduction module is specifically configured to perform hybrid noise reduction by using the speaker playing of the earphone according to the speaker playing signal.
The present invention also provides a wireless headset, comprising: the system comprises a loudspeaker, a feedforward microphone, a feedback microphone, wind energy monitoring equipment, a memory and a processor; wherein the memory is used for storing a computer program, and the processor is used for implementing the steps of the noise reduction method of the hybrid noise reduction earphone when executing the computer program.
The invention also provides a computer readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the noise reduction method of a hybrid noise reducing headphone as described above.
The invention provides a noise reduction method of a mixed noise reduction earphone, which comprises the following steps: acquiring a wind speed signal acquired by wind energy monitoring equipment; judging whether a wind noise signal in the external environment signal collected by the feedforward microphone is greater than a threshold value or not according to the wind speed signal; if not, carrying out mixed noise reduction by using loudspeaker playing of the earphone according to the external environment signal and the loudspeaker playing signal collected by the feedback microphone; if so, carrying out noise reduction by using the loudspeaker playing of the earphone according to the loudspeaker playing signal;
therefore, the wind noise condition in the external environment signal collected by the feedforward microphone can be determined by utilizing the wind speed signal collected by the wind energy monitoring equipment arranged in the earphone, so that the work of the feedforward microphone is automatically stopped when the wind noise signal in the external environment signal is larger than the threshold value. In addition, the invention also provides a noise reduction device of the hybrid noise reduction earphone, a wireless earphone and a computer readable storage medium, and the noise reduction device, the wireless earphone and the computer readable storage medium also have the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a noise reduction method of a hybrid noise reduction earphone according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a hybrid noise reduction process in the prior art;
fig. 3 is a schematic process diagram of a noise reduction method for a hybrid noise reduction earphone according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an acoustic measurement method for compensating a transfer function according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an acoustic measurement method of an acoustic path transfer function from a feedback microphone to a tympanic membrane of a human ear according to an embodiment of the present invention;
fig. 6 is a block diagram of a noise reduction device of a hybrid noise reduction earphone according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating a noise reduction method of a hybrid noise reduction earphone according to an embodiment of the present invention. The method can comprise the following steps:
step 101: and acquiring a wind speed signal acquired by the wind energy monitoring equipment.
The wind energy monitoring device in this step may be a device provided in the earphone for detecting the wind speed. In this embodiment, the wind energy monitoring device is used to monitor the external environment, and the condition that the feedforward microphone in the earphone is affected by wind is collected, that is, the wind speed signal collected by the wind energy monitoring device in this embodiment corresponds to the wind speed that the feedforward microphone is affected by wind. That is, the set position of the probe of the wind energy monitoring apparatus corresponds to the set position of the feedforward microphone in the present embodiment. For example, the probe of the wind energy monitoring device can be arranged outside the earphone structure together with the feedforward microphone, for example, the probe of the wind energy monitoring device is arranged on one side of the feedforward microphone; the probe of the wind energy monitoring device may also be at other positions of the earphone, as long as the wind energy monitoring device can acquire a wind speed signal corresponding to a wind speed blown by the feedforward microphone, and the specific setting position of the probe of the wind energy monitoring device is not limited in this embodiment.
Specifically, the specific signal type of the wind speed signal obtained by the processor in the earphone in this step, that is, the specific device type of the wind energy monitoring device, may be set by a designer according to a practical scene and a user requirement, for example, the wind energy monitoring device may be set as a thermal anemometer, and the fluid speed signal is converted into a voltage signal or a current signal by a hot wire, that is, the wind speed signal may be a voltage signal or a current signal; the wind energy monitoring device may also be configured as an ultrasonic anemometer, which converts the fluid velocity signal into a frequency change of the ultrasonic pulses by a pair of ultrasonic transducers, i.e. the wind velocity signal may be a frequency signal of the ultrasonic pulses. The present embodiment has any limitations to this step as long as the wind energy monitoring device converts the wind speed of the wind blowing on its probe into a corresponding wind speed signal.
It can be understood that, the purpose of this embodiment may be that when the hybrid noise reduction function is started, the wind speed signal collected by the wind energy monitoring device is utilized for the earphone, and when it is determined that the influence of wind blowing on the feedforward microphone is large, the loudspeaker playing signal collected by the feedback microphone is utilized to perform noise reduction through loudspeaker playing of the earphone, so as to avoid the problem of wind noise caused by the wind noise signal in the external environment signal collected by the feedforward microphone. That is, the method may further include a step of determining whether the earphone starts the hybrid noise reduction function; if yes, the step is carried out; if not, the step is not needed to be entered, and normal loudspeaker playing is carried out.
Similarly, the step of judging whether the earphone is in a wearing state can be further included before the step; if the earphone is in a wearing state, the step is carried out, and the situation that the user hears obvious wind noise to influence the use experience is avoided; if the earphone is not worn, the step is not started, and the loudspeaker playing of the earphone is paused or the mixed noise reduction function is stopped to carry out normal loudspeaker playing.
Step 102: judging whether a wind noise signal in the external environment signal collected by the feedforward microphone is greater than a threshold value or not according to the wind speed signal; if not, go to step 103; if yes, go to step 104.
In this step, the external environment signal may be a sound signal collected by a feedforward microphone in the earphone.
It can be understood that the purpose of this step can be for utilizing the wind speed signal that wind energy monitoring facilities gathered, confirm whether the wind in the external environment signal of the collection of feedforward microphone in the earphone makes an uproar the signal and is greater than the threshold value, whether the wind in the external environment signal makes an uproar the signal and can influence normal mixed noise reduction effect promptly, thereby when the wind in the external environment signal makes an uproar the signal can influence normal mixed noise reduction effect, avoid making an uproar in-process to external environment signal's use, promote user experience.
Specifically, the specific manner of judging whether the wind noise signal in the external environment signal collected by the feedforward microphone is greater than the threshold value according to the wind speed signal in the step can be set by a designer according to a practical scene and user requirements, if the wind speed value corresponding to the wind speed signal is greater than the wind speed threshold value, that is, the wind speed value corresponding to the wind speed signal corresponds to the wind noise signal in the external environment signal; if so, determining that the wind noise signal in the external environment signal collected by the feedforward microphone is greater than the threshold value, that is, wind blows to the feedforward noise reduction microphone and can generate a large influence on a normal mixed noise reduction effect, and entering step 104, wherein noise reduction is performed by only using a loudspeaker playing signal collected by the feedback microphone through loudspeaker playing of the earphone; if not, it indicates that no wind blows to the feedforward noise reduction microphone or the wind blows to the feedforward noise reduction microphone does not have a great influence on the normal mixed noise reduction effect, and the method may enter step 103, and perform normal mixed noise reduction by using the external environment signal collected by the feedforward noise reduction microphone and the loudspeaker playing signal collected by the feedback microphone and using the loudspeaker playing of the earphone. Or the specific value of the wind noise signal in the external environment signal collected by the feedforward microphone can be calculated by using the wind speed value corresponding to the wind speed signal, and then whether the wind noise signal is greater than the threshold value or not can be judged. The present embodiment does not set any limit to this.
Step 103: and mixing and denoising by using the loudspeaker playing of the earphone according to the external environment signal and the loudspeaker playing signal acquired by the feedback microphone.
In the step, the loudspeaker playing signal can be a sound signal collected by a feedback microphone in the earphone; the loudspeaker playing signals collected by the feedback microphone can include sound signals played by the loudspeaker and sound signals of the external environment transmitted through the earphone shell, namely noise signals.
It can be understood that the purpose of this step may be to perform normal hybrid noise reduction through speaker play of the earphone by using the external environment signal collected by the feedforward noise reduction microphone and the speaker play signal collected by the feedback microphone when the wind noise signal in the external environment signal collected by the feedforward microphone is not greater than the threshold, that is, when no wind blows to the feedforward noise reduction microphone or the wind blows to the feedforward noise reduction microphone does not have a great influence on the normal hybrid noise reduction effect.
Specifically, a normal hybrid noise reduction process in the prior art can be shown in fig. 2, and the transfer function of the feedforward noise reduction includes: p is the transfer function of the acoustic channel from the feedforward microphone (FF Mic) to the tympanic membrane, G is the transfer function of the acoustic channel from the horn (SPK) to the tympanic membrane (called FFG), and Hf is the response of the feedforward noise reduction circuit; the transfer function of feedback noise reduction includes: g is the transfer function (referred to as FBG) of the acoustic channel from the horn to the feedback microphone (Err Mic, also known as error microphone), Hb is the response of the feedback noise reduction circuit; c is a control signal (comprising a feedforward component and a feedback component) sent by the loudspeaker, d is a noise signal permeating into the earmuffs, and e is a residual noise signal after d and c are mixed; the feedforward noise reduction microphone is usually arranged outside the earphone structure, and the feedback microphone is arranged in a loudspeaker front cavity in the earphone and close to the loudspeaker diaphragm; assuming that the sound field is the same between the feedback microphone and the tympanic membrane of the human ear, the noise residual reference point for feedforward noise reduction is moved from the tympanic membrane to the feedback microphone, i.e. let FFG be FBG. The transfer function between the error signal e to the ambient noise d is then defined as the hybrid system sensitivity function S:
the sensitivity function reflects the amount of noise reduction of the system, the maximum amount of noise reduction for hybrid noise reduction being approximately equal to the superposition of the maximum amounts of noise reduction for feedback noise reduction and feedforward noise reduction.
Correspondingly, for the specific process of performing mixed noise reduction by using the loudspeaker playing of the earphone according to the external environment signal and the loudspeaker playing signal in the step, the specific process can be set by a designer according to a practical scene and user requirements, if the specific process can be realized by adopting the same or similar mode as the normal mixed noise reduction in the prior art, as shown in fig. 3, the processor can control the conduction of the feedforward microphone (FF MIC) and the feedforward noise reduction circuit (Hf) to perform normal mixed noise reduction when the wind noise signal in the external environment signal acquired by the feedforward microphone is determined to be not more than the threshold value; the processor can also perform normal mixed noise reduction by using the external environment signal received by the processor and the loudspeaker playing signal when the wind noise signal in the external environment signal collected by the feedforward microphone is determined to be not greater than the threshold value. The present embodiment does not set any limit to this.
Step 104: and according to the loudspeaker playing signal, utilizing the loudspeaker playing of the earphone to reduce noise.
It can be understood that, the purpose of this step may be to use the loudspeaker playing signal collected by the feedback microphone instead of the external environment signal collected by the feedforward noise reduction microphone when the wind noise signal in the external environment signal collected by the feedforward microphone is greater than the threshold value, that is, when the wind blowing to the feedforward noise reduction microphone has a great influence on the normal mixed noise reduction effect, and the loudspeaker playing signal collected by the feedback microphone is used to reduce the noise through the loudspeaker playing of the earphone.
Specifically, the specific noise reduction mode by using the speaker playing of the earphone according to the speaker playing signal in the step can be set by a designer, and if the noise reduction mode can be set by the designer, the feedback noise reduction can be performed by using the speaker playing of the earphone according to the speaker playing signal, that is, the processor can automatically turn off the feedforward noise reduction path and only leave the feedback noise reduction path to work when the wind noise signal in the external environment signal collected by the feedforward microphone is greater than a threshold value, so that the problem of wind noise is solved; also can be according to loudspeaker broadcast signal, utilize the loudspeaker broadcast of earphone to feed back and fall and make an uproar, the treater can be when the wind noise signal in the external environment signal of the collection of feedforward microphone is greater than the threshold value promptly, utilize the loudspeaker broadcast signal that feedback microphone gathered, utilize the loudspeaker broadcast of earphone to mix and fall and make an uproar to avoid wind noise problem under the prerequisite of guaranteeing that the noise reduction effect is not weakened, further promote user experience. The present embodiment does not set any limit to this.
Correspondingly, when the processor performs mixed noise reduction by using the loudspeaker playing of the earphone according to the loudspeaker playing signal, the loudspeaker playing signal acquired by the feedback microphone can be converted into a signal required by feedforward noise reduction, namely a feedforward replacement signal, by using a transfer function (compensation transfer function) of an acoustic path from the feedforward microphone to the feedback microphone; the difference between the received signals of the feedback microphone and the feedforward microphone is compensated by using the compensation transfer function, so that the feedforward replacement signal obtained after compensation is almost the same as the external environment signal directly received by the feedforward microphone, and the difference is that the wind noise signal in the external environment signal is removed, and the influence of wind blowing is avoided.
That is to say, the above-mentioned mixing noise reduction by using the speaker play of the earphone according to the speaker play signal may include: acquiring a loudspeaker playing signal; acquiring a feedforward replacement signal corresponding to an external environment signal according to the loudspeaker playing signal and the compensation transfer function; wherein the compensation transfer function is a transfer function of an acoustic path from the feedforward microphone to the feedback microphone; and performing mixed noise reduction by using the loudspeaker playing of the earphone according to the feedforward replacing signal and the loudspeaker playing signal.
Specifically, the specific manner of obtaining the feedforward replacement signal corresponding to the external environment signal according to the loudspeaker playing signal and the compensation transfer function may be set by a designer, for example, the processor may output the loudspeaker playing signal collected by the feedback microphone to the compensation filter to obtain the feedforward replacement signal output by the compensation filter; wherein, the compensation parameter of the compensation filter is 1/Q, Q is the compensation transfer function, that is, because the compensation filter is used to compensate the difference between the received signals of the feedback microphone and the feedforward noise reduction microphone, the compensation parameter of the compensation filter should be the inverse of the compensation transfer function Q: 1/Q; as shown in fig. 3, when it is determined that the wind noise signal in the external environment signal collected by the feedforward microphone is greater than the threshold, the processor may control the single-pole double-throw switch to turn on the connection between the feedforward noise reduction circuit and the compensation filter, turn off the connection between the feedforward noise reduction circuit and the feedforward microphone, output a feedforward replacement signal obtained by the compensation filter according to the received loudspeaker play signal to the feedforward noise reduction circuit, and output the loudspeaker play signal to the feedback noise reduction circuit, so as to perform hybrid noise reduction through loudspeaker play of the earphone by using the outputs of the feedforward noise reduction circuit and the feedback noise reduction circuit; the output end of the compensation filter and the output end of the feedforward microphone are respectively connected with two fixed ends of the single-pole double-throw change-over switch in a one-to-one correspondence mode, and the movable end of the single-pole double-throw change-over switch is connected with the input end of the feedforward noise reduction circuit. The processor can also directly utilize the compensation transfer function Q and the loudspeaker playing signal to calculate and obtain a feedforward replacing signal. The present embodiment does not set any limit to this.
Specifically, the specific content of the compensation transfer function Q can be set by a designer, for example, the compensation transfer function Q can be obtained by an acoustic measurement method shown in FIG. 4, namely, in an anechoic room environment, an earphone is worn on an artificial Head and a trunk simulator (Head and torso simulator), a sound box (L output speaker) is driven to send sweep signals or white noise signals with the frequency width of 10 Hz-20 kHz and the amplitude range of 80-85 dBSP L, a feedforward microphone (MIC FF) and a feedback microphone (Err MIC) synchronously receive signals sent by the sound box (can be understood as double MIC synchronous recording), the two signals are differentiated to obtain the compensation transfer function Q, the amplitude of each frequency point is kept unchanged because the frequency of the feedforward microphone (MIC FF) and the feedback microphone (Err MIC) changes from 10 Hz-20 kHz in real time, the amplitude of each frequency point is kept unchanged, the white noise signals are broadband signals with the amplitude of 10-20 kHz and the amplitude of each frequency point is kept unchanged, the amplitude of the sweep signals and the two sweep signals are not shown as constant values of the feedforward microphone and the feedback signals, the constant values of the feedforward Microphone (MIC) and the feedback microphone, and the two signals are shown as the feedforward microphone signals of the same frequency signals, and the feedforward microphone, the acoustic signals, the feedforward microphone and the feedback signals are not shown as the constant values of the feedforward microphone in the feedforward microphone environment, and the feedback microphone, and the feedback signals, and the feedback.
The compensation transfer function Q can also be obtained by calculating the acoustic path transfer function a by making a be the acoustic path transfer function from the feedback microphone to the eardrum of the human Ear when the acoustic path transfer function P from the feedforward microphone to the eardrum of the human Ear is known, and obtaining the compensation transfer function Q by calculating the acoustic path transfer function a by the acoustic measurement method shown in FIG. 5, namely obtaining the acoustic path transfer function a, namely in an anechoic room environment, the earphone is worn on an artificial Head and a trunk Simulator (Head and Torso Simulator), the sound box (L outpeak) is driven to transmit a sweep signal or a white signal with a frequency width of 10 Hz-20 kHz and an amplitude range of 80-85 dBSP L, and the feedback microphone (Err MIC) and the Ear Simulator (Ear Simulator, which is arranged in the Head and Torso Simulator) at the position of the eardrum (Ear Drum) receive the signals at the same time, and the difference between the two signals is the acoustic path transfer function a.
Specifically, the present embodiment does not limit the specific structure of the compensation filter, and for example, the compensation filter can be implemented by an analog circuit built by an operational amplifier and a resistance-capacitance sensor; the compensation filter can also be implemented by providing a digital circuit of a DSP (digital signal processing).
In the embodiment, the wind noise condition in the external environment signal collected by the feedforward microphone can be determined by utilizing the wind speed signal collected by the wind energy monitoring equipment arranged in the earphone, so that when the wind noise signal in the external environment signal is greater than the threshold value, the work of the feedforward microphone is automatically stopped.
Referring to fig. 6, fig. 6 is a block diagram of a noise reduction device of a hybrid noise reduction earphone according to an embodiment of the present invention. The apparatus may include:
the acquiring module 10 is used for acquiring a wind speed signal acquired by wind energy monitoring equipment;
the judging module 20 is configured to judge whether a wind noise signal in the external environment signal collected by the feedforward microphone is greater than a threshold value according to the wind speed signal;
the first noise reduction module 30 is configured to perform hybrid noise reduction by using speaker playing of the earphone according to the external environment signal and the speaker playing signal collected by the feedback microphone if the external environment signal is not greater than the threshold;
and the second noise reduction module 40 is configured to, if the noise is greater than the threshold, perform noise reduction by using speaker playing of the earphone according to the speaker playing signal.
Optionally, the second noise reduction module 40 is specifically configured to perform mixed noise reduction by using speaker playing of the earphone according to the speaker playing signal.
Optionally, the second noise reduction module 40 may include:
the first obtaining submodule is used for obtaining a loudspeaker playing signal;
the second acquisition submodule is used for acquiring a feedforward replacement signal corresponding to the external environment signal according to the loudspeaker playing signal and the compensation transfer function; wherein the compensation transfer function is a transfer function of an acoustic path from the feedforward microphone to the feedback microphone;
and the mixed noise reduction submodule is used for carrying out mixed noise reduction by using the loudspeaker playing of the earphone according to the feedforward replacing signal and the loudspeaker playing signal.
Optionally, the second obtaining submodule may be specifically configured to output the loudspeaker playing signal to the compensation filter, so as to obtain a feedforward replacement signal output by the compensation filter; wherein, the compensation parameter of the compensation filter is 1/Q, and Q is a compensation transfer function.
Optionally, the hybrid noise reduction submodule may be specifically configured to control the single-pole double-throw switch to connect the feedforward noise reduction circuit and the compensation filter, disconnect the feedforward noise reduction circuit and the feedforward microphone, output the feedforward replacement signal to the feedforward noise reduction circuit, and output the horn play signal to the feedback noise reduction circuit, so as to use the outputs of the feedforward noise reduction circuit and the feedback noise reduction circuit, and use the horn play of the earphone to perform hybrid noise reduction.
Optionally, the determining module 20 may be specifically configured to determine whether a wind speed corresponding to the wind speed signal is greater than a preset wind speed; if not, sending a starting signal to the first noise reduction module 30; if so, an activation signal is sent to the second noise reduction module 40.
In this embodiment, the wind noise condition in the external environment signal collected by the feedforward microphone can be determined by the judgment module 20 using the wind speed signal collected by the wind energy monitoring device arranged in the earphone, so that when the wind noise signal in the external environment signal is greater than the threshold value, the second noise reduction module 40 automatically stops the work of the feedforward microphone.
The present invention also provides a wireless headset, comprising: the system comprises a loudspeaker, a feedforward microphone, a feedback microphone, wind energy monitoring equipment, a memory and a processor; wherein, the memory is used for storing the computer program, and the processor is used for implementing the steps of the noise reduction method of the hybrid noise reduction earphone provided by the above embodiment when executing the computer program.
The present invention also provides a computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the noise reduction method of the hybrid noise reduction earphone as provided in the above embodiments.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device, the wireless headset and the computer-readable storage medium disclosed by the embodiment correspond to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The noise reduction method and apparatus for the hybrid noise reduction earphone, the wireless earphone and the computer readable storage medium provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A noise reduction method for a hybrid noise reduction headphone, comprising:
acquiring a wind speed signal acquired by wind energy monitoring equipment;
judging whether a wind noise signal in the external environment signal collected by the feedforward microphone is greater than a threshold value or not according to the wind speed signal;
if not, carrying out mixed noise reduction by using loudspeaker playing of the earphone according to the external environment signal and a loudspeaker playing signal acquired by the feedback microphone;
and if so, utilizing the loudspeaker playing of the earphone to reduce noise according to the loudspeaker playing signal.
2. The noise reduction method for a hybrid noise reduction earphone according to claim 1, wherein the noise reduction by using the speaker play of the earphone according to the speaker play signal comprises:
and mixing and denoising by using the loudspeaker playing of the earphone according to the loudspeaker playing signal.
3. The noise reduction method for the hybrid noise reduction earphone according to claim 2, wherein the hybrid noise reduction by using the speaker play of the earphone according to the speaker play signal comprises:
acquiring the loudspeaker playing signal;
acquiring a feedforward replacement signal corresponding to the external environment signal according to the loudspeaker playing signal and the compensation transfer function; wherein the compensation transfer function is a transfer function of an acoustic path between the feedforward microphone and the feedback microphone;
and performing mixed noise reduction by using the loudspeaker playing of the earphone according to the feedforward replacing signal and the loudspeaker playing signal.
4. The noise reduction method for a hybrid noise reduction earphone according to claim 3, wherein the obtaining the feedforward replacement signal corresponding to the external environment signal according to the loudspeaker playing signal and the compensation transfer function comprises:
outputting the loudspeaker playing signal to a compensation filter to obtain the feedforward replacement signal output by the compensation filter; wherein, the compensation parameter of the compensation filter is 1/Q, and Q is the compensation transfer function.
5. The noise reduction method for the hybrid noise reduction earphone according to claim 4, wherein the hybrid noise reduction by using the speaker play of the earphone according to the feedforward replacement signal and the speaker play signal comprises:
and controlling a single-pole double-throw change-over switch to connect a feedforward noise reduction circuit and the compensation filter, disconnecting the feedforward noise reduction circuit and the feedforward microphone, outputting the feedforward replacement signal to the feedforward noise reduction circuit, and outputting the loudspeaker playing signal to a feedback noise reduction circuit, so that the output of the feedforward noise reduction circuit and the feedback noise reduction circuit is utilized, and the loudspeaker playing of the earphone is utilized to carry out mixed noise reduction.
6. The noise reduction method of the hybrid noise reduction earphone according to claim 1, wherein the determining whether the wind noise information in the external environment signal collected by the feedforward microphone is greater than a threshold value according to the wind speed signal comprises:
judging whether the wind speed corresponding to the wind speed signal is greater than a preset wind speed or not;
if not, executing the step of performing mixed noise reduction by using speaker playing of the earphone according to the external environment signal and the speaker playing signal acquired by the feedback microphone;
and if so, executing the step of reducing the noise by using the loudspeaker playing of the earphone according to the loudspeaker playing signal.
7. A noise reducer for a hybrid noise reducing headphone, comprising:
the acquisition module is used for acquiring a wind speed signal acquired by the wind energy monitoring equipment;
the judging module is used for judging whether a wind noise signal in the external environment signal collected by the feedforward microphone is larger than a threshold value or not according to the wind speed signal;
the first noise reduction module is used for carrying out mixed noise reduction by using loudspeaker playing of an earphone according to the external environment signal and a loudspeaker playing signal acquired by a feedback microphone if the external environment signal is not greater than the threshold value;
and the second noise reduction module is used for reducing noise by using the loudspeaker playing of the earphone according to the loudspeaker playing signal if the second noise reduction module is larger than the threshold value.
8. The noise reduction device for a hybrid noise reduction earphone according to claim 7, wherein the second noise reduction module is specifically configured to perform hybrid noise reduction by using a speaker play of the earphone according to the speaker play signal.
9. A wireless headset, comprising: the system comprises a loudspeaker, a feedforward microphone, a feedback microphone, wind energy monitoring equipment, a memory and a processor; wherein the memory is adapted to store a computer program, and the processor is adapted to carry out the steps of the noise reduction method of the hybrid noise reducing headphone according to any of the claims 1 to 6 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the noise reduction method of a hybrid noise reducing headphone according to any one of the claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010230792.7A CN111405406B (en) | 2020-03-27 | 2020-03-27 | Noise reduction method and device for hybrid noise reduction earphone, wireless earphone and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010230792.7A CN111405406B (en) | 2020-03-27 | 2020-03-27 | Noise reduction method and device for hybrid noise reduction earphone, wireless earphone and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111405406A true CN111405406A (en) | 2020-07-10 |
| CN111405406B CN111405406B (en) | 2021-12-24 |
Family
ID=71414146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010230792.7A Active CN111405406B (en) | 2020-03-27 | 2020-03-27 | Noise reduction method and device for hybrid noise reduction earphone, wireless earphone and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111405406B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019967A (en) * | 2020-09-09 | 2020-12-01 | 歌尔科技有限公司 | Earphone noise reduction method and device, earphone equipment and storage medium |
| CN112492438A (en) * | 2020-11-16 | 2021-03-12 | 上海电机学院 | Active noise reduction method for feedback type active noise reduction earphone in cabin |
| CN113259797A (en) * | 2021-04-06 | 2021-08-13 | 歌尔股份有限公司 | Noise reduction circuit, noise reduction method and earphone |
| CN113645532A (en) * | 2021-08-17 | 2021-11-12 | 恒玄科技(上海)股份有限公司 | Adaptive processing method of earphone with ANC and earphone with ANC |
| CN114264365A (en) * | 2021-12-14 | 2022-04-01 | 歌尔科技有限公司 | Wind noise detection method and device, terminal equipment and storage medium |
| CN115243140A (en) * | 2022-06-29 | 2022-10-25 | 歌尔股份有限公司 | Earphone control method and device, earphone and medium |
| WO2023024345A1 (en) * | 2021-08-23 | 2023-03-02 | 歌尔科技有限公司 | Earphone and control method therefor |
| US11812243B2 (en) | 2021-03-18 | 2023-11-07 | Bang & Olufsen A/S | Headset capable of compensating for wind noise |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602163A (en) * | 2014-12-31 | 2015-05-06 | 歌尔声学股份有限公司 | Active noise reduction earphone, and noise reduction control method and system used on active noise reduction earphone |
| US20170148428A1 (en) * | 2015-11-19 | 2017-05-25 | Parrot Drones | Audio headset with active noise control, anti-occlusion control and passive attenuation cancelling, as a function of the presence or the absence of a voice activity of the headset user |
| CN107517415A (en) * | 2016-06-16 | 2017-12-26 | 峰范（北京）科技有限公司 | Intelligent earphone |
| CN109257675A (en) * | 2018-10-19 | 2019-01-22 | 歌尔科技有限公司 | A kind of radix saposhnikoviae method for de-noising, earphone and storage medium |
| CN109474865A (en) * | 2018-10-30 | 2019-03-15 | 歌尔科技有限公司 | A kind of radix saposhnikoviae method for de-noising, earphone and storage medium |
-
2020
- 2020-03-27 CN CN202010230792.7A patent/CN111405406B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602163A (en) * | 2014-12-31 | 2015-05-06 | 歌尔声学股份有限公司 | Active noise reduction earphone, and noise reduction control method and system used on active noise reduction earphone |
| US20170148428A1 (en) * | 2015-11-19 | 2017-05-25 | Parrot Drones | Audio headset with active noise control, anti-occlusion control and passive attenuation cancelling, as a function of the presence or the absence of a voice activity of the headset user |
| CN107517415A (en) * | 2016-06-16 | 2017-12-26 | 峰范（北京）科技有限公司 | Intelligent earphone |
| CN109257675A (en) * | 2018-10-19 | 2019-01-22 | 歌尔科技有限公司 | A kind of radix saposhnikoviae method for de-noising, earphone and storage medium |
| CN109474865A (en) * | 2018-10-30 | 2019-03-15 | 歌尔科技有限公司 | A kind of radix saposhnikoviae method for de-noising, earphone and storage medium |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019967A (en) * | 2020-09-09 | 2020-12-01 | 歌尔科技有限公司 | Earphone noise reduction method and device, earphone equipment and storage medium |
| CN112019967B (en) * | 2020-09-09 | 2022-07-22 | 歌尔科技有限公司 | Earphone noise reduction method and device, earphone equipment and storage medium |
| CN112492438B (en) * | 2020-11-16 | 2022-07-26 | 上海电机学院 | Active noise reduction method for feedback type active noise reduction earphone in cabin |
| CN112492438A (en) * | 2020-11-16 | 2021-03-12 | 上海电机学院 | Active noise reduction method for feedback type active noise reduction earphone in cabin |
| US11812243B2 (en) | 2021-03-18 | 2023-11-07 | Bang & Olufsen A/S | Headset capable of compensating for wind noise |
| CN113259797A (en) * | 2021-04-06 | 2021-08-13 | 歌尔股份有限公司 | Noise reduction circuit, noise reduction method and earphone |
| CN113259797B (en) * | 2021-04-06 | 2022-06-14 | 歌尔股份有限公司 | Noise reduction circuit, noise reduction method and earphone |
| CN113645532A (en) * | 2021-08-17 | 2021-11-12 | 恒玄科技(上海)股份有限公司 | Adaptive processing method of earphone with ANC and earphone with ANC |
| CN113645532B (en) * | 2021-08-17 | 2023-10-20 | 恒玄科技(上海)股份有限公司 | Adaptive processing method of earphone with ANC and earphone with ANC |
| WO2023024345A1 (en) * | 2021-08-23 | 2023-03-02 | 歌尔科技有限公司 | Earphone and control method therefor |
| CN114264365A (en) * | 2021-12-14 | 2022-04-01 | 歌尔科技有限公司 | Wind noise detection method and device, terminal equipment and storage medium |
| CN114264365B (en) * | 2021-12-14 | 2024-04-30 | 歌尔科技有限公司 | Wind noise detection method, device, terminal equipment and storage medium |
| CN115243140A (en) * | 2022-06-29 | 2022-10-25 | 歌尔股份有限公司 | Earphone control method and device, earphone and medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111405406B (en) | 2021-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111405406B (en) | Noise reduction method and device for hybrid noise reduction earphone, wireless earphone and storage medium | |
| CN107808657B (en) | Design system and method of active noise reduction earphone | |
| US8391523B2 (en) | Method and system for wireless hearing assistance | |
| JP2017163531A (en) | Head-wearable hearing device | |
| US20100278365A1 (en) | Method and system for wireless hearing assistance | |
| CN109314814B (en) | Active noise reduction method and earphone | |
| JPWO2009125567A1 (en) | Sound reproduction device using in-ear earphones | |
| JP2011013403A (en) | Ambient noise removal device | |
| US10034087B2 (en) | Audio signal processing for listening devices | |
| CN111565354B (en) | Testing method and testing system for bone conduction earphone | |
| CN109068215A (en) | A kind of noise-reduction method of In-Ear Headphones, device and In-Ear Headphones | |
| CN113746983B (en) | Hearing aid method and device, storage medium and intelligent terminal | |
| CN113574593A (en) | Tuning method, manufacturing method, computer readable storage medium and tuning system | |
| CN111464911B (en) | Earphone left and right volume adjusting method, earphone and storage medium | |
| CN107343235A (en) | It is a kind of can plug earphone cord active noise reduction earphone | |
| CN111464930B (en) | Howling detection method and device for earphone and storage medium | |
| CN110944261B (en) | Earphone sound effect control method and headset | |
| US20220103951A1 (en) | Machine learning based self-speech removal | |
| CN113645534A (en) | Earphone blocking effect eliminating method and earphone | |
| CN114630223B (en) | Method for optimizing functions of hearing-wearing device and hearing-wearing device | |
| CN111683322A (en) | Feedforward noise reduction earphone, noise reduction method, system, equipment and computer storage medium | |
| CN217741875U (en) | Directional sound pickup device and system for auditory meatus | |
| WO2023070916A1 (en) | Method for eliminating occlusion effect of earphone, and earphone | |
| CN113099350B (en) | Bluetooth headset capable of automatically reducing noise during music playing | |
| JP2983017B1 (en) | Earplug type electroacoustic transducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |