CN111541966B - Uplink noise reduction method and device of wireless earphone and wireless earphone - Google Patents

Uplink noise reduction method and device of wireless earphone and wireless earphone Download PDF

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CN111541966B
CN111541966B CN202010367523.5A CN202010367523A CN111541966B CN 111541966 B CN111541966 B CN 111541966B CN 202010367523 A CN202010367523 A CN 202010367523A CN 111541966 B CN111541966 B CN 111541966B
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earphone
noise reduction
wearing
gain
microphone
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CN111541966A (en
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杨宗旭
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Goertek Techology Co Ltd
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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
    • H04R1/1016—Earpieces of the intra-aural type
    • 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
    • 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
    • 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
    • H04R1/1083—Reduction of ambient noise
    • 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
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
    • 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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • 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
    • H04R2201/109—Arrangements to adapt hands free headphones for use on both ears
    • 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

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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Headphones And Earphones (AREA)

Abstract

The invention discloses an uplink noise reduction method of a wireless earphone, which comprises the following steps: acquiring audio signals collected by respective preset microphones of a left earphone and a right earphone when double ears are played; the preset microphones comprise an inner ear microphone and an outer ear microphone; determining the wearing states of the left earphone and the right earphone according to the audio signals; carrying out uplink noise reduction by using the left earphone and/or the right earphone according to the wearing state; according to the invention, the wearing states of the left earphone and the right earphone are determined by utilizing the inner ear microphone and the outer ear microphone which are used for actively reducing noise of the wireless earphone, so that a proper earphone is selected for uplink noise reduction, the uplink noise reduction effect and intelligence of the wireless earphone are improved, and the user experience is improved; and the microphone of actively reducing noise can be multiplexed, and the increase of hardware cost is avoided. In addition, the invention also discloses an uplink noise reduction device of the wireless earphone and the wireless earphone, and the wireless earphone has the beneficial effects.

Description

Uplink noise reduction method and device of wireless earphone and wireless earphone
Technical Field
The invention relates to the technical field of portable listening equipment, in particular to an uplink noise reduction method and device of a wireless earphone and the wireless earphone.
Background
With the development of wireless technologies such as bluetooth technology, wireless headsets (such as bluetooth headsets) have both convenience and high sound quality, and have become standard equipment in many people's lives. In the application of wireless earphones, along with the continuous pursuit of sports and health, the neck-line type wireless earphones and the neck-hanging type wireless earphones are always hot-pin type in wireless earphone products due to the characteristics of portability, light weight, wearing comfort, difficulty in falling in the sports process and the like.
The noise reduction capability of the wireless earphone is always a core function point in the field. The noise reduction of the wireless earphone comprises two parts, wherein one part is active noise reduction, namely, external noise is filtered in the wearing process, particularly in a music state, so that the condition that noise is accompanied in music listening of a user is avoided, and the user obtains better user experience; the other part is uplink noise reduction, namely, in the conversation process, the opposite side can clearly hear the own voice through processing the noise. Therefore, how to improve the uplink noise reduction effect of the wireless headset, so as to improve the noise reduction capability of the wireless headset and improve the user experience is a problem which needs to be solved urgently nowadays.
Disclosure of Invention
The invention aims to provide an uplink noise reduction method and device of a wireless earphone and the wireless earphone, so as to improve the uplink noise reduction effect and intelligence of the wireless earphone and improve user experience.
In order to solve the above technical problem, the present invention provides an uplink noise reduction method for a wireless headset, comprising:
when the two ears play, audio signals collected by respective preset microphones of the left earphone and the right earphone are obtained; the preset microphones comprise an inner ear microphone and an outer ear microphone;
determining the wearing states of the left earphone and the right earphone according to the audio signals;
and carrying out uplink noise reduction by utilizing the left earphone and/or the right earphone according to the wearing state.
Optionally, when the two ears are played, acquiring the audio signals collected by the respective preset microphones of the left earphone and the right earphone includes:
and when the incoming call ringtone is played by double ears, the audio signal is acquired.
Optionally, the determining the wearing states of the left earphone and the right earphone according to the audio signal includes:
acquiring gain values of a preset number of gain comparison points in a preset frequency range corresponding to each preset microphone according to the audio signals;
and determining the wearing state according to the gain value.
Optionally, when the preset microphone includes 1 inner ear microphone and 1 outer ear microphone, determining the wearing state according to the gain value includes:
by passing
Figure BDA0002477104970000021
Respectively calculating the leakage amount corresponding to the left earphone and the right earphone; wherein G isSheetThe leakage amount of the target earphone is N which is the preset amount GInner ear iA second microphone corresponding to the inner ear microphone of the target earphoneGain values of i gain contrast points, GExternal ear iA gain value of an i-th gain contrast point corresponding to the concha microphone of the target earphone;
and respectively comparing the leakage amount corresponding to the left earphone and the leakage amount corresponding to the right earphone with a leakage amount threshold value, and determining the wearing state.
Optionally, the performing, according to the wearing state, uplink noise reduction by using the left earphone and/or the right earphone includes:
and carrying out uplink noise reduction by utilizing the left earphone or the right earphone according to the wearing state.
Optionally, the performing, according to the wearing state, uplink noise reduction by using the left earphone or the right earphone includes:
if the wearing state of the left earphone is normal wearing and the wearing state of the right earphone is abnormal wearing, utilizing the left earphone to perform uplink noise reduction;
if the wearing state of the left earphone is abnormal wearing and the wearing state of the right earphone is normal wearing, utilizing the right earphone to perform uplink noise reduction;
and if the wearing states of the left earphone and the right earphone are normal wearing, utilizing the left earphone or the right earphone to carry out uplink noise reduction.
Optionally, the performing uplink noise reduction by using the left earphone or the right earphone includes:
acquiring gain values of the preset number of gain comparison points in the preset frequency range corresponding to each external ear microphone according to the audio signals acquired by the external ear microphones of the left earphone and the right earphone;
determining a noise reduction earphone according to the gain value corresponding to each external ear microphone, and performing uplink noise reduction by using the noise reduction earphone; wherein the noise reduction earphone is the left earphone or the right earphone.
Optionally, when the left earphone and the right earphone are respectively provided with 1 external ear microphone, the determining the noise reduction earphone according to the gain value corresponding to each external ear microphone includes:
by passing
Figure BDA0002477104970000031
Respectively calculating the external ear microphone gains corresponding to the left earphone and the right earphone; wherein G isSingle outer layerThe gain of the external ear microphone of the target earphone, N is the preset number, GExternal ear iA gain value of an i-th gain contrast point corresponding to the concha microphone of the target earphone;
through GOuter cover＝|GLeft outer layer-GOuter rightCalculating difference values of external microphones on two sides; wherein G isOuter coverIs the difference value of the two external microphones, GLeft outer layerGain of external ear microphone of the left earphone, GOuter rightAn outer ear microphone gain for the right earphone;
comparing the difference value of the external microphones on the two sides with a difference threshold value, and if the difference value of the external microphones on the two sides is larger than the difference threshold value, taking the earphone with small gain of the external ear microphone in the left earphone and the right earphone as the noise reduction earphone; and if the difference value of the external microphones on the two sides is not greater than the difference threshold value, taking the default noise reduction earphone in the left earphone and the right earphone as the noise reduction earphone.
The invention also provides an uplink noise reduction device of the wireless earphone, which comprises:
the acquisition module is used for acquiring audio signals acquired by respective preset microphones of the left earphone and the right earphone when the two earphones play; the preset microphones comprise an inner ear microphone and an outer ear microphone;
the determining module is used for determining the wearing states of the left earphone and the right earphone according to the audio signals;
and the noise reduction module is used for carrying out uplink noise reduction by utilizing the left earphone and/or the right earphone according to the wearing state.
The present invention also provides a wireless headset, comprising: the earphone comprises a left earphone, a right earphone, a memory and a processor; wherein the left earphone and the right earphone are both provided with an inner ear microphone and an outer ear microphone; the memory is configured to store a computer program, and the processor is configured to implement the steps of the uplink noise reduction method for a wireless headset as described above when executing the computer program.
The invention provides an uplink noise reduction method of a wireless earphone, which comprises the following steps: acquiring audio signals collected by respective preset microphones of a left earphone and a right earphone when double ears are played; the preset microphones comprise an inner ear microphone and an outer ear microphone; determining the wearing states of the left earphone and the right earphone according to the audio signals; carrying out uplink noise reduction by using the left earphone and/or the right earphone according to the wearing state;
therefore, the wearing states of the left earphone and the right earphone are determined by using the inner ear microphone and the outer ear microphone which are used for actively reducing noise of the wireless earphone, so that the proper earphone is selected for uplink noise reduction, the uplink noise reduction effect and intelligence of the wireless earphone are improved, and the user experience is improved; and the microphone of actively reducing noise can be multiplexed, and the increase of hardware cost is avoided. In addition, the invention also provides an uplink noise reduction device of the wireless earphone and the wireless earphone, and the wireless earphone has 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 an uplink noise reduction method for a wireless headset according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a prior art wireless headset;
FIG. 3 is a schematic illustration of audio signals collected by an inner ear microphone and an outer ear microphone when the earplug is normally worn;
FIG. 4 is a schematic diagram of audio signals collected by an inner ear microphone and an outer ear microphone when the earplug is not normally worn;
fig. 5 is a flowchart of an uplink noise reduction method for a wireless headset according to another embodiment of the present invention;
fig. 6 is a schematic flowchart of an uplink noise reduction method for a wireless headset according to another embodiment of the present invention;
fig. 7 is a block diagram of an uplink noise reduction apparatus of a wireless headset 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 an uplink noise reduction method for a wireless headset according to an embodiment of the present invention. The method can comprise the following steps:
step 101: acquiring audio signals collected by respective preset microphones of a left earphone and a right earphone when double ears are played; the preset microphone comprises an inner ear microphone and an outer ear microphone.
It is understood that the left earphone and the right earphone in the present embodiment may be two earpieces of a wireless earphone, i.e., a left earpiece and a right earpiece, two earpieces in a neckline wireless earphone as shown in fig. 2, two earpieces in a neckline wireless earphone and two earpieces of a TWS (true wireless stereo) earphone, and the like. In this embodiment, the wearing states of the left earphone and the right earphone are detected through the audio signals collected by the respective preset microphones of the left earphone and the right earphone in the wireless earphone when the two earphones are played, so that uplink noise reduction is performed by using one or two earphones which are normally worn in the wearing states, and the uplink noise reduction effect and the intelligence of the wireless earphone are improved.
Specifically, the preset microphones in this embodiment may be microphones disposed in both the left earphone and the right earphone. The specific choice of the preset microphones respectively arranged on the left earphone and the right earphone in this embodiment can be set by the designer according to practical situations and user requirements, as shown in fig. 2, the preset microphones may include an inner ear microphone and an outer ear microphone, that is, the left earphone and the right earphone are respectively provided with an inner ear microphone and an outer ear microphone; the preset microphone may also include one inner ear microphone and a plurality of outer ear microphones, or may also include a plurality of inner ear microphones and a plurality of outer ear microphones. As long as the processor can determine the wearing states of the left earphone and the right earphone by using the audio signals collected by the respective preset microphones of the left earphone and the right earphone, the present embodiment does not limit this.
Correspondingly, the inner ear microphone and the outer ear microphone in this embodiment may be two microphones required for hybrid active noise reduction of the wireless headset in the prior art. For the specific types and the setting positions of the inner ear microphone and the outer ear microphone, the designer can set the microphones correspondingly according to the active noise reduction technology in the prior art, and this embodiment does not limit this. That is to say, the present embodiment can multiplex the inner ear microphone and the outer ear microphone used for active noise reduction of the wireless headset to perform uplink noise reduction, thereby avoiding an increase in hardware cost.
It should be noted that, the uplink noise reduction method for a wireless headset provided in this embodiment may be a method for performing uplink noise reduction in a call process of a wearer (user) of the wireless headset by using audio signals acquired by a processor, such as a single chip microcomputer, in the wireless headset through a preset microphone in a left headset and a preset microphone in a right headset; or a method for performing uplink noise reduction during a call of a wearer (user) of a wireless headset by using audio signals collected by preset microphones in a left headset and a right headset of the wireless headset for a processor in a terminal connected with the wireless headset (such as a smart phone connected with a neck-hung wireless headset). The present embodiment does not set any limit to this.
Specifically, the specific manner in which the processor acquires the audio signals acquired by the respective preset microphones of the left earphone and the right earphone when the wireless earphone performs binaural playing in this step may be set by a designer according to a use scene and a user requirement, for example, the processor may acquire the audio signals acquired by the respective preset microphones of the left earphone and the right earphone according to a preset time interval when the wireless earphone performs binaural playing, that is, the left earphone and the right earphone both play audio data, and update the wearing states of the left earphone and the right earphone in time; the processor may also acquire and acquire audio signals acquired by respective preset microphones of the left earphone and the right earphone once or at preset time intervals when the wireless earphone plays the incoming call ringtone in two ears, that is, the left earphone and the right earphone both play audio data of the incoming ringtone. The present embodiment does not set any limit to this.
Step 102: and determining the wearing states of the left earphone and the right earphone according to the audio signals.
It can be understood that, since the inner ear microphone and the outer ear microphone in the ear plugs (left earphone and right earphone) of the wireless earphone are respectively located in the ear and out of the ear of the user when the user normally wears the ear plugs, when the ear plugs play audio data such as ring tone, the inner ear microphone can pick up the sound played by the speaker (loudspeaker), while the outer ear microphone cannot receive the sound due to isolation, or can only receive an extremely low signal amount; when the user does not normally wear the earplug, the sound played by the loudspeaker is collected by the external ear microphone at the same time, and the signal quantity difference is greatly reduced. Taking the preset microphones as 1 inner ear microphone and 1 outer ear microphone as an example, as shown in fig. 3 and 4, when the earplug is worn normally, the difference between the audio signal collected by the inner ear microphone and the audio signal collected by the outer ear microphone is significant; when the earplug is not normally worn, the difference of the signal quantity of the audio signals collected by the inner ear microphone is greatly reduced compared with the audio signals collected by the outer ear microphone. Therefore, in the present embodiment, the wearing state of the earplug can be determined by analyzing and comparing the isolation amount (i.e., leakage amount) of the preset microphones including the inner ear microphone and the outer ear microphone in each frequency band in the audio spectrum analysis of the sound played by the speaker in the earplug.
Specifically, the specific manner of determining the wearing states of the left earphone and the right earphone by the processor in this step according to the audio signals acquired by the respective preset microphones of the left earphone and the right earphone can be set by a designer according to a use scene and user requirements, for example, the processor can acquire the gain values of the preset number of gain comparison points in the preset frequency range corresponding to each preset microphone according to the audio signals; determining the wearing states of the left earphone and the right earphone by using the gain value corresponding to each preset microphone; if the preset microphone corresponding to each earplug comprises a group of similar microphones, such as a plurality of inner ear microphones or a plurality of outer ear microphones, the processor may also process each group of similar microphones corresponding to each earplug to obtain the processing signals corresponding to each group of similar microphones; acquiring gain values of a preset number of gain comparison points in a preset frequency range corresponding to each group of similar microphones by using the processing signals; therefore, the wearing states of the left earphone and the right earphone are determined by using the gain value corresponding to each group of similar microphones or the gain value corresponding to each group of similar microphones and the gain value corresponding to the single microphone. The present embodiment does not set any limit to this.
Correspondingly, the wearing states of the left earphone and the right earphone determined by the processor in this step may be wearing states of two earplugs of the wireless earphone, that is, a wearing state of the left earphone and a wearing state of the right earphone. Wherein the wearing state of each earplug may include normal wearing in which the user correctly wears the earplug, and abnormal wearing in which the user does not correctly wear the earplug and in which the user does not wear the earplug.
Step 103: and performing uplink noise reduction by using the left earphone and/or the right earphone according to the wearing state.
It will be appreciated that the purpose of this step may be to select an appropriate ear plug for upstream noise reduction when the user is talking, based on the determined wearing status of the two ear plugs of the wireless headset. The specific mode that the processor performs uplink noise reduction by using the left earphone and/or the right earphone according to the wearing state of the left earphone and the right earphone in the step can be set by a designer according to a practical scene and user requirements, and if the wireless earphone only supports uplink noise reduction of a single earplug, the step can perform uplink noise reduction by using the left earphone or the right earphone according to the wearing state of the processor; namely, when the wearing states of the left earphone and the right earphone are both normal wearing, the processor selects one of the earplugs to carry out uplink noise reduction. When the wireless earphone supports the uplink noise reduction common to the two earplugs, the step can be that the processor utilizes the left earphone and/or the right earphone to carry out the uplink noise reduction according to the wearing state; namely, when the wearing states of the left earphone and the right earphone are both normal wearing, the processor utilizes the left earphone and the right earphone to carry out uplink noise reduction. The present embodiment does not set any limit to this.
Specifically, the specific process of the processor in this step of performing uplink noise reduction by using the left earphone and/or the right earphone according to the wearing states of the left earphone and the right earphone can be set by a designer, and if the wearing state of the left earphone is normal wearing, and the wearing state of the right earphone is abnormal wearing, the processor can perform uplink noise reduction by using the left earphone; when the wearing state of the left earphone is abnormal wearing and the wearing state of the right earphone is normal wearing, the right earphone can be used for uplink noise reduction. When the wearing states of the left earphone and the right earphone are both normal wearing, if the wireless earphone supports the common uplink noise reduction of the two earplugs, the uplink noise reduction of the left earphone and the right earphone can be carried out; if the wireless headset supports uplink noise reduction for only a single earpiece, one of the earpieces may be selected for uplink noise reduction. When the left earphone and the right earphone are both worn abnormally, the user can be reminded of wearing the earplugs correctly through reminding equipment (such as a vibration motor), and then the step 101 is returned, or the user can wear the two earplugs normally after being reminded by default, and one of the earplugs is selected to perform uplink noise reduction.
Correspondingly, the specific manner of selecting one of the two earplugs (the left earphone or the right earphone) for uplink noise reduction can be set by a designer, for example, one of the two earplugs can be preset as an uplink noise reduction earplug; for example, the default left earphone is the uplink noise reduction earplug, that is, when the wearing states of the left earphone and the right earphone are both normal wearing, the left earphone can be directly used for uplink noise reduction. The environment noise condition of each earplug can be determined according to the audio signals collected by the respective preset microphones of the normally worn left earphone and the normally worn right earphone, namely the environment conditions of the earplugs at the two sides are friendly to the conversation, so that when the environment noise conditions of the two earplugs are greatly different, the earplug with the better environment noise condition is selected to perform uplink noise reduction, and the uplink noise reduction effect is improved. Accordingly, a default upstream noise reducing earplug may be selected for upstream noise reduction when the ambient noise conditions of the two earplugs are the same or do not differ significantly.
In the embodiment of the invention, the wearing states of the left earphone and the right earphone are determined by using the inner ear microphone and the outer ear microphone which are used for actively reducing noise of the wireless earphone, so that the proper earphone is selected for uplink noise reduction, the uplink noise reduction effect and intelligence of the wireless earphone are improved, and the user experience is improved; and the microphone of actively reducing noise can be multiplexed, and the increase of hardware cost is avoided.
Referring to fig. 5, fig. 5 is a flowchart illustrating an uplink noise reduction method for a wireless headset according to another embodiment of the present invention. The method can comprise the following steps:
step 201: when the incoming call ringtone is played by two ears, audio signals collected by respective preset microphones of a left earphone and a right earphone are obtained; the preset microphone comprises an inner ear microphone and an outer ear microphone.
The step is similar to step 101, and is not described herein again.
Step 202: and acquiring gain values of a preset number of gain comparison points in a preset frequency range corresponding to each preset microphone according to the audio signals.
It can be understood that the purpose of this step may be to obtain, by using the audio signal collected by each preset microphone, the gain values of the preset number of gain comparison points within the preset frequency range corresponding to each preset microphone, so as to determine the isolation amount, i.e., the leakage amount, of each frequency band of each preset microphone in the audio spectrum analysis of the incoming call ringtone.
Specifically, the specific selection of the preset frequency range and the preset number of gain comparison points in the preset frequency range in the step may be set by a designer according to a use scenario and a user requirement, which is not limited in this embodiment. If the preset frequency range can be set to be [100 Hz-10000 Hz ], the gain comparison points can be a preset number of coordinate points uniformly selected from [100 Hz-10000 Hz ]. Namely, in the step, the gain values of the preset number of gain comparison points uniformly selected within [100 Hz-10000 Hz ] corresponding to each preset microphone can be obtained according to the audio signals.
Step 203: and determining the wearing states of the left earphone and the right earphone according to the gain value.
It should be noted that, the purpose of this step may be to determine, for the processor, the wearing states of the left earphone and the right earphone according to the gain values of the preset number corresponding to each preset microphone, that is, whether the user wears the left earphone and the right earphone normally.
Correspondingly, in this step, the processor may determine the wearing state of each earplug according to the gain value corresponding to the respective preset microphone of each earplug. For the specific mode that the processor determines the wearing states of the left earphone and the right earphone according to the gain values in the step, the specific mode can be set by a designer, and if the preset microphone of each earplug comprises 1 inner ear microphone and 1 outer ear microphone, the gain values of the same gain comparison point in the preset number of gain values corresponding to the inner ear microphones and the preset number of gain values corresponding to the outer ear microphones can be compared, so that the wearing states of the left earphone and the right earphone are determined; for example by
Figure BDA0002477104970000091
Respectively calculating the leakage amount corresponding to the left earphone and the right earphone; respectively comparing the leakage amount corresponding to the left earphone and the leakage amount corresponding to the right earphone with a leakage amount threshold value, and determining the wearing states of the left earphone and the right earphone; wherein G isSheetFor the leakage of the target earphone, N is a preset number, GInner ear iGain value of ith gain contrast point corresponding to inner ear microphone of target earphone, GExternal ear iThe gain value of the ith gain contrast point corresponding to the external ear microphone of the target earphone;that is, if the leakage amount corresponding to an earplug is greater than the leakage amount threshold, it is determined that the earplug is not normally worn; and if the leakage amount corresponding to one earplug is not larger than the leakage amount threshold value, determining that the wearing state of the earplug is normal wearing. When the preset microphone of each earplug comprises 1 inner ear microphone and a plurality of outer ear microphones, the gain values corresponding to the plurality of outer ear microphones may be processed (such as mean value processing or other noise reduction processing) to obtain the processed gain values of the preset number corresponding to the plurality of outer ear microphones, and then the gain values of the preset number corresponding to the inner ear microphones and the gain values of the same gain comparison points in the processed gain values of the preset number corresponding to the plurality of outer ear microphones are compared to determine the wearing states of the left earphone and the right earphone. The present embodiment does not set any limit to this.
Step 204: and carrying out uplink noise reduction by using the left earphone or the right earphone according to the wearing state.
It is understood that the purpose of this step may be to select one of the two earpieces (left earphone or right earphone) for uplink noise reduction according to the wearing state of the left earphone or right earphone when the wireless earphone supports uplink noise reduction of only a single earphone.
Specifically, taking the preset microphone of each earplug including 1 inner ear microphone and 1 outer ear microphone as an example, as shown in fig. 6, 3 intervention factors may be set, which are respectively a leakage amount factor T1, an environmental condition factor T2, and a default factor T3, and are respectively set to 0 or 1, and the priority T1> T2> T3. When any leakage amount corresponding to the left earphone and the leakage amount corresponding to the right earphone is larger than a threshold (namely, a leakage amount threshold), T1 is equal to 1; otherwise, T1 is 0. When the two values are both larger than the threshold value, namely the wearing states of the left earphone and the right earphone are abnormal wearing, the user can be reminded of wearing the earphones correctly through interaction of reminding equipment and the user, for example, motor vibration; only the leakage amount corresponding to the left earphone is larger than the threshold value, namely the wearing state of the left earphone is normal wearing, and when the wearing state of the right earphone is abnormal wearing, the left earphone is used for carrying out uplink noise reduction; and only the leakage amount corresponding to the right earphone is larger than the threshold value, namely the wearing state of the left earphone is abnormal wearing, and when the wearing state of the right earphone is normal wearing, the right earphone is utilized to carry out uplink noise reduction.
Correspondingly, when the leakage amount corresponding to the left earphone and the leakage amount corresponding to the right earphone are not greater than the threshold (i.e., the leakage amount threshold), that is, T1 is 0, or after the user is reminded to correctly wear the earphones, the noise reduction earphone is determined and the noise reduction earphone is used for performing uplink noise reduction according to the gain values of the preset number of gain comparison points in the preset frequency range corresponding to the external ear microphones of the left earphone and the right earphone, which are obtained when the T1 is 0, or the gain values of the preset number of gain comparison points in the preset frequency range corresponding to the external ear microphones of the left earphone and the right earphone, which are obtained again by using the audio signals collected by the external ear microphones of the left earphone and the right earphone; wherein, the noise reduction earphone is a left earphone or a right earphone. When the preset microphones of each ear plug include 1 inner ear microphone and 1 outer ear microphone, as shown in fig. 6, the preset microphones can be passed through
Figure BDA0002477104970000101
Respectively calculating the external ear microphone gains corresponding to the left earphone and the right earphone; wherein G isSingle outer layerThe gain of the external ear microphone of the target earphone, N is a predetermined number, GExternal ear iThe gain value of the ith gain contrast point corresponding to the external ear microphone of the target earphone; through GOuter cover＝|GLeft outer layer-GOuter rightCalculating difference values of external microphones on two sides; wherein G isOuter coverIs the difference value of the two external microphones, GLeft outer layerExternal ear microphone gain, G, for the left earphoneOuter rightThe outer ear microphone gain for the right earphone; comparing the difference value of the external microphones on the two sides with a difference threshold value, and calculating an environmental condition factor T2; if the difference value of the external microphones on the two sides is greater than the difference threshold value, T2 is equal to 1, and the corresponding earphone with smaller gain of the external ear microphone in the left earphone and the right earphone can be used as the noise reduction earphone; if the difference value between the two external microphones is not greater than the difference threshold value, T2 is 0, and the noise reduction earphone can be determined by using a default factor T3.
The default factor T3 may represent which side of the wireless headset is used as the default uplink noise reduction side, and if the left side is used as the default uplink noise reduction side, that is, the left headset is used as the default noise reduction headset, T3 is 1; on the contrary, when the right side is the upward noise reduction side, T3 is 0. That is, through setting of the value of T3, that is, selection of the default noise reduction earphone, when the difference value between the external microphones on the two sides is not greater than the difference threshold value, that is, T2 is 0, the default noise reduction earphone of the left earphone and the right earphone is selected as the noise reduction earphone, so that the noise reduction earphone performs noise reduction when the user is talking.
In this embodiment, the present invention determines the leakage amount of the loudspeaker picked up by each preset microphone when playing the ring tone by using the gain values of the preset number of gain comparison points within the preset frequency range corresponding to each preset microphone, so as to determine the wearing states of the left earphone and the right earphone, and select a proper earphone for uplink noise reduction; and when the incoming call ringtone is played by two ears, the audio signals collected by the respective preset microphones of the left earphone and the right earphone are obtained, so that the proper noise reduction earphone can be selected in time before uplink noise reduction is needed each time, and the electric quantity of the wireless earphone is saved.
Referring to fig. 7, fig. 7 is a block diagram of an uplink noise reduction apparatus of a wireless headset according to an embodiment of the present invention. The apparatus may include:
the acquiring module 10 is configured to acquire audio signals acquired by respective preset microphones of the left earphone and the right earphone when the two earphones are played; the preset microphones comprise an inner ear microphone and an outer ear microphone;
a determining module 20, configured to determine wearing states of the left earphone and the right earphone according to the audio signal;
and the noise reduction module 30 is configured to perform uplink noise reduction by using the left earphone and/or the right earphone according to the wearing state.
Optionally, the obtaining module 10 is specifically configured to obtain the audio signal when the incoming call ringtone is played in both ears.
Optionally, the determining module 20 may include:
the gain acquisition submodule is used for acquiring gain values of a preset number of gain comparison points in a preset frequency range corresponding to each preset microphone according to the audio signal;
and the state determining submodule is used for determining the wearing state according to the gain value.
Optionally, when the preset microphones include 1 inner ear microphone and 1 outer ear microphone, the state determination sub-module may include:
a computing unit for passing
Figure BDA0002477104970000111
Respectively calculating the leakage amount corresponding to the left earphone and the right earphone; wherein G isSheetFor the leakage of the target earphone, N is a preset number, GInner ear iThe gain value of the ith gain contrast point corresponding to the inner ear microphone of the target earphone, GExternal ear iThe gain value of the ith gain contrast point corresponding to the external ear microphone of the target earphone;
and the determining unit is used for comparing the leakage amount corresponding to the left earphone and the leakage amount corresponding to the right earphone with the leakage amount threshold respectively to determine the wearing state.
Optionally, the noise reduction module 30 is specifically configured to perform uplink noise reduction by using the left earphone or the right earphone according to the wearing state.
Optionally, the noise reduction module 30 includes:
the left ear noise reduction sub-module is used for performing uplink noise reduction by using the left earphone if the wearing state of the left earphone is normal wearing and the wearing state of the right earphone is abnormal wearing;
the right ear noise reduction sub-module is used for carrying out uplink noise reduction by using the right earphone if the wearing state of the left earphone is abnormal wearing and the wearing state of the right earphone is normal wearing;
and selecting a noise reduction submodule for carrying out uplink noise reduction by using the left earphone or the right earphone if the wearing states of the left earphone and the right earphone are normal.
Optionally, selecting a noise reduction sub-module includes:
the gain acquisition unit is used for acquiring gain values of a preset number of gain comparison points in a preset frequency range corresponding to each external ear microphone according to the audio signals acquired by the external ear microphones of the left earphone and the right earphone;
the noise reduction determining unit is used for determining a noise reduction earphone according to the gain value corresponding to each external ear microphone and utilizing the noise reduction earphone to perform uplink noise reduction; wherein, the noise reduction earphone is a left earphone or a right earphone.
Optionally, when the left earphone and the right earphone are respectively provided with 1 external ear microphone, the noise reduction determining unit may include:
a gain calculation subunit for passing
Figure BDA0002477104970000121
Respectively calculating the external ear microphone gains corresponding to the left earphone and the right earphone; wherein G isSingle outer layerThe gain of the external ear microphone of the target earphone, N is a predetermined number, GExternal ear iThe gain value of the ith gain contrast point corresponding to the external ear microphone of the target earphone;
a difference calculation subunit for passing GOuter cover＝|GLeft outer-GOuter rightCalculating difference values of external microphones on two sides; wherein G isOuter coverIs the difference value of the two external microphones, GLeft outer layerExternal ear microphone gain, G, for the left earphoneOuter rightThe outer ear microphone gain for the right earphone;
the comparison determining subunit is used for comparing the difference value of the external microphones on the two sides with a difference threshold value, and if the difference value of the external microphones on the two sides is greater than the difference threshold value, the earphone with small gain of the external ear microphones corresponding to the left earphone and the right earphone is used as a noise reduction earphone; and if the difference value of the external microphones on the two sides is not greater than the difference threshold value, taking the default noise reduction earphone in the left earphone and the right earphone as the noise reduction earphone.
In the embodiment of the invention, the wearing states of the left earphone and the right earphone are determined by using the inner ear microphone and the outer ear microphone which are used for actively reducing noise of the wireless earphone, so that the proper earphone is selected for uplink noise reduction, the uplink noise reduction effect and intelligence of the wireless earphone are improved, and the user experience is improved; and the microphone of actively reducing noise can be multiplexed, and the increase of hardware cost is avoided.
An embodiment of the present invention further provides a wireless headset, including: the earphone comprises a left earphone, a right earphone, a memory and a processor; wherein, the left earphone and the right earphone are both provided with an inner ear microphone and an outer ear microphone; the memory is used for storing a computer program, and the processor is used for implementing the steps of the uplink noise reduction method for the wireless headset provided by any one of the above embodiments when executing the computer program.
The wireless earphone in this embodiment may be a neck-line wireless earphone or a neck-hanging wireless earphone.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the uplink noise reduction method for a wireless headset according to any of the above embodiments are implemented.
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.
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 uplink noise reduction method and device for the wireless headset and the wireless headset provided by the 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 (7)

1. An uplink noise reduction method for a wireless headset, comprising:
acquiring audio signals collected by respective preset microphones of a left earphone and a right earphone when double ears are played; the preset microphones comprise an inner ear microphone and an outer ear microphone;
determining the wearing states of the left earphone and the right earphone according to the audio signals;
according to the wearing state, the left earphone and/or the right earphone are/is utilized to carry out uplink noise reduction;
wherein the determining the wearing states of the left earphone and the right earphone according to the audio signal comprises:
acquiring gain values of a preset number of gain comparison points in a preset frequency range corresponding to each preset microphone according to the audio signals;
determining the wearing state according to the gain value;
wherein, according to the wearing state, the uplink noise reduction is performed by using the left earphone and/or the right earphone, and the method comprises the following steps:
if the wearing state of the left earphone is normal wearing and the wearing state of the right earphone is abnormal wearing, utilizing the left earphone to perform uplink noise reduction;
if the wearing state of the left earphone is abnormal wearing and the wearing state of the right earphone is normal wearing, utilizing the right earphone to perform uplink noise reduction;
and if the wearing states of the left earphone and the right earphone are normal wearing, uplink noise reduction is carried out by using the left earphone and/or the right earphone.
2. The method of claim 1, wherein the obtaining the audio signals collected by the respective preset microphones of the left earphone and the right earphone during binaural playing comprises:
and when the incoming call ringtone is played by double ears, the audio signal is acquired.
3. The method of claim 1, wherein when the preset microphones include 1 inner ear microphone and 1 outer ear microphone, the determining the wearing status according to the gain value comprises:
by passing
Figure FDA0003564982960000011
Respectively calculating the leakage amount corresponding to the left earphone and the right earphone; wherein G isSheetThe leakage amount of the target earphone is N which is the preset amount GInner ear iA gain value, G, of an i-th gain contrast point corresponding to the inner ear microphone of the target earphoneExternal ear iA gain value of an i-th gain contrast point corresponding to the concha microphone of the target earphone;
and respectively comparing the leakage amount corresponding to the left earphone and the leakage amount corresponding to the right earphone with a leakage amount threshold value, and determining the wearing state.
4. The method of claim 1, wherein the performing uplink noise reduction by using the left earphone or the right earphone comprises:
acquiring gain values of the preset number of gain comparison points in the preset frequency range corresponding to each external ear microphone according to the audio signals acquired by the external ear microphones of the left earphone and the right earphone;
determining a noise reduction earphone according to the gain value corresponding to each external ear microphone, and performing uplink noise reduction by using the noise reduction earphone; wherein the noise reduction earphone is the left earphone or the right earphone.
5. The method of claim 4, wherein when 1 auricle microphone is respectively disposed on the left earphone and the right earphone, the determining the noise reduction earphone according to the gain value corresponding to each auricle microphone comprises:
by passing
Figure FDA0003564982960000021
Respectively calculating the external ear microphone gains corresponding to the left earphone and the right earphone; wherein G isSingle outer layerThe gain of external ear microphone of target earphone, N is the preset number, GExternal ear iA gain value of an i-th gain contrast point corresponding to the concha microphone of the target earphone;
through GOuter cover＝|GLeft outer layer-GOuter rightCalculating difference values of external microphones on two sides; wherein G isOuter coverIs the difference value of the two external microphones, GLeft outer layerIs the external ear microphone gain, G, of the left earphoneOuter rightAn outer ear microphone gain for the right earphone;
comparing the difference value of the external microphones on the two sides with a difference threshold value, and if the difference value of the external microphones on the two sides is larger than the difference threshold value, taking the earphone with small gain of the external ear microphone in the left earphone and the right earphone as the noise reduction earphone; and if the difference value of the external microphones on the two sides is not greater than the difference threshold value, taking the default noise reduction earphone in the left earphone and the right earphone as the noise reduction earphone.
6. An uplink noise reduction apparatus for a wireless headset, comprising:
the acquisition module is used for acquiring audio signals acquired by respective preset microphones of the left earphone and the right earphone when the two earphones play; the preset microphones comprise an inner ear microphone and an outer ear microphone;
the determining module is used for determining the wearing states of the left earphone and the right earphone according to the audio signals;
the noise reduction module is used for carrying out uplink noise reduction by utilizing the left earphone and/or the right earphone according to the wearing state;
wherein the determining module comprises:
the gain acquisition submodule is used for acquiring gain values of a preset number of gain comparison points in a preset frequency range corresponding to each preset microphone according to the audio signal;
the state determining submodule is used for determining the wearing state according to the gain value;
the noise reduction module is specifically configured to perform uplink noise reduction by using the left earphone if the wearing state of the left earphone is normal wearing and the wearing state of the right earphone is abnormal wearing; if the wearing state of the left earphone is abnormal wearing and the wearing state of the right earphone is normal wearing, utilizing the right earphone to perform uplink noise reduction; and if the wearing states of the left earphone and the right earphone are normal wearing, uplink noise reduction is carried out by using the left earphone and/or the right earphone.
7. A wireless headset, comprising: the earphone comprises a left earphone, a right earphone, a memory and a processor; wherein the left earphone and the right earphone are both provided with an inner ear microphone and an outer ear microphone; wherein the memory is configured to store a computer program, and the processor is configured to implement the steps of the method for uplink noise reduction for a wireless headset according to any of claims 1 to 5 when executing the computer program.
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