CN110753296B - Sensitivity calibration method and device for left loudspeaker and right loudspeaker of wireless earphone and earphone box - Google Patents
Sensitivity calibration method and device for left loudspeaker and right loudspeaker of wireless earphone and earphone box Download PDFInfo
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- CN110753296B CN110753296B CN201911053561.7A CN201911053561A CN110753296B CN 110753296 B CN110753296 B CN 110753296B CN 201911053561 A CN201911053561 A CN 201911053561A CN 110753296 B CN110753296 B CN 110753296B
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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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
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
Abstract
The application discloses a method and a device for calibrating the sensitivity of a left loudspeaker and a right loudspeaker of a wireless earphone, an earphone box and a computer readable storage medium, wherein the method comprises the following steps: when the wireless earphone is in a box state, acquiring a first sensitivity difference value, a first sensitivity and a second sensitivity of target microphones of the left earphone and the right earphone; calculating a second sensitivity difference of the left earphone and the right earphone by using the first sensitivity difference, the first sensitivity and the second sensitivity, and calculating a first gain of the left earphone loudspeaker and a second gain of the right earphone loudspeaker by using the second sensitivity difference; the first gain is written to the speaker of the left earpiece and the second gain is written to the speaker of the right earpiece to complete the sensitivity calibration. According to the sensitivity calibration method for the left loudspeaker and the right loudspeaker of the wireless earphone, the sensitivity of the loudspeakers in the left earphone and the right earphone is calibrated by adjusting the difference of the gain value and balancing the hardware sensitivity, and the consistency of the sensitivity of the loudspeakers in the left earphone and the right earphone is ensured.
Description
Technical Field
The present invention relates to the field of wireless headset technology, and more particularly, to a method and an apparatus for calibrating the sensitivity of left and right speakers of a wireless headset, a headset case, and a computer-readable storage medium.
Background
With the popularization of wireless earphone technology, the proportion of the wireless earphone technology in the E-commerce market to the whole earphone market is greatly increased. When the wireless headset is used as a stereo headset, the uniformity of the sensitivity of the speakers in the left and right headsets needs to be considered.
For the TWS (true Wireless stereo) earphone, the left side and the right side are not connected through wires, the left side and the right side are generally produced separately during production, and are tested separately, and if the requirement that the speakers of two earphones mounted in the same earphone box can meet the requirement of sensitivity consistency during shipment is required. In the related technology, the two earphones are subjected to sensitivity consistency test before being placed into the earphone box, the two earphones are placed into the same earphone box when the requirements are met, and one side of the two earphones is replaced when the requirements are not met until the two earphones are placed into the earphone box after the requirements are met. The disadvantage of the above scheme is that the earphone on one side needs to be replaced for many times during testing, and the time consumption is overlarge.
Therefore, how to improve the efficiency of the sensitivity consistency test of the left and right speakers is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The application aims to provide a method and a device for calibrating the sensitivity of left and right speakers of a wireless headset, a headset box and a computer readable storage medium, and the efficiency of testing the sensitivity consistency of the left and right speakers is improved.
In order to achieve the above object, the present application provides a method for calibrating sensitivity of left and right speakers of a wireless headset, which is applied to a headset case of the wireless headset, and includes:
when the wireless earphone is in a box state, acquiring a first sensitivity difference value, a first sensitivity and a second sensitivity of target microphones of a left earphone and a right earphone; the first sensitivity is acquired by a target microphone in the left earphone when a loudspeaker in the left earphone sends a first detection signal with a preset frequency, the second sensitivity is acquired by a target microphone in the right earphone when a loudspeaker in the right earphone sends a second detection signal with the preset frequency, and the target microphone is a microphone close to the loudspeaker in a communication microphone;
calculating a second sensitivity difference of the left earphone speaker and the right earphone speaker using the first sensitivity difference, the first sensitivity, and the second sensitivity, and calculating a first gain of the left earphone speaker and a second gain of the right earphone speaker using the second sensitivity difference;
writing the first gain to the speaker of the left earpiece and the second gain to the speaker of the right earpiece to complete sensitivity calibration.
Wherein, the first sensitivity difference, the first sensitivity and the second sensitivity of the target microphone of the left earphone and the right earphone are obtained, which comprises:
sending a calibration instruction to the left earphone so that a loudspeaker of the left earphone can send the first detection signal, and acquiring the first sensitivity by using a target microphone in the left earphone;
sending a calibration instruction to the right earphone so that a loudspeaker of the right earphone can send the second detection signal, and acquiring by using a target microphone in the right earphone to obtain the second sensitivity;
receiving the first sensitivity sent by a target microphone in the left earphone and the second sensitivity sent by a target microphone in the right earphone;
and acquiring a first sensitivity difference value of target microphones of the left earphone and the right earphone.
Wherein before sending the calibration instruction to the left earphone, the method further comprises:
generating the calibration command when a key on the earphone box is triggered; wherein the keys comprise physical keys or touch keys.
Wherein the obtaining a first sensitivity difference of a target microphone of the left earphone and the right earphone comprises:
calculating a position sensitivity difference of target microphones of the left earphone and the right earphone; the position sensitivity difference is a difference between the first sensitivity and a third sensitivity or a difference between the second sensitivity and a fourth sensitivity, the third sensitivity is a sensitivity acquired by a target microphone in the right earphone when the speaker in the left earphone transmits the first detection signal, and the fourth sensitivity is a sensitivity acquired by the target microphone in the left earphone when the speaker in the right earphone transmits the second detection signal;
taking the difference value between the position sensitivity difference value and a preset value as a first sensitivity difference value of target microphones of the left earphone and the right earphone; the preset value is the position sensitivity difference value of target microphones of a left earphone and a right earphone in the standard wireless earphone.
Before the difference between the position sensitivity difference and a preset value is used as the first sensitivity difference of the target microphones of the left earphone and the right earphone, the method further comprises the following steps:
judging whether the position sensitivity difference is the same as the preset value or not;
and if not, executing the step of taking the difference value between the position sensitivity difference values and a preset value as a first sensitivity difference value of target microphones of the left earphone and the right earphone.
Wherein said calculating a second sensitivity difference for the speakers of the left and right earphones using the first sensitivity difference, the first sensitivity, and the second sensitivity comprises:
and taking the difference value of the first sensitivity and the second sensitivity as a sensitivity calibration value, and taking the difference value of the sensitivity calibration value and the first sensitivity difference value as the second sensitivity difference value.
Wherein the calculating a first gain of the left earpiece speaker and a second gain of the right earpiece speaker using the second sensitivity difference comprises:
acquiring a first initial gain of the left earphone speaker and a second initial gain of the right earphone speaker;
taking a difference between the first initial gain and half of the second sensitivity difference value as the first gain, and taking a sum of the second initial gain and half of the second sensitivity difference value as the second gain.
In order to achieve the above object, the present application provides a sensitivity calibration device for a left speaker and a right speaker of a wireless headset, which is applied to a headset box of the wireless headset, and comprises:
the acquisition module is used for acquiring a first sensitivity difference value, a first sensitivity and a second sensitivity of target microphones of the left earphone and the right earphone when the wireless earphone is in a box state; the first sensitivity is acquired by a target microphone in the left earphone when a loudspeaker in the left earphone sends a first detection signal with a preset frequency, the second sensitivity is acquired by a target microphone in the right earphone when a loudspeaker in the right earphone sends a second detection signal with the preset frequency, and the target microphone is a microphone close to the loudspeaker in a communication microphone;
a calculation module, configured to calculate a second sensitivity difference of the speakers of the left earphone and the right earphone by using the first sensitivity difference, the first sensitivity, and the second sensitivity, and calculate a first gain of the left earphone speaker and a second gain of the right earphone speaker by using the second sensitivity difference;
and the writing module is used for writing the first gain into the loudspeaker of the left earphone and writing the second gain into the loudspeaker of the right earphone so as to finish sensitivity calibration.
In order to achieve the above object, the present application provides an earphone box, including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the sensitivity calibration method of the left and right loudspeakers of the wireless headset when executing the computer program.
To achieve the above object, the present application provides a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the steps of the method for calibrating the sensitivity of the left and right speakers of the wireless headset as described above.
According to the scheme, the method for calibrating the sensitivity of the left loudspeaker and the sensitivity of the right loudspeaker of the wireless earphone comprises the following steps: when the wireless earphone is in a box state, acquiring a first sensitivity difference value, a first sensitivity and a second sensitivity of target microphones of a left earphone and a right earphone; the first sensitivity is acquired by a target microphone in the left earphone when a loudspeaker in the left earphone sends a first detection signal with a preset frequency, the second sensitivity is acquired by a target microphone in the right earphone when a loudspeaker in the right earphone sends a second detection signal with the preset frequency, and the target microphone is a microphone close to the loudspeaker in a communication microphone; calculating a second sensitivity difference of the left earphone speaker and the right earphone speaker using the first sensitivity difference, the first sensitivity, and the second sensitivity, and calculating a first gain of the left earphone speaker and a second gain of the right earphone speaker using the second sensitivity difference; writing the first gain to the speaker of the left earpiece and the second gain to the speaker of the right earpiece to complete sensitivity calibration.
The sensitivity of the loudspeaker and the microphone in the earphone is influenced by the hardware sensitivity of the earphone and the gain value of the loudspeaker, and the sensitivity of the loudspeaker and the microphone in different earphones is different when the gain values are consistent due to the fact that the hardware sensitivity of the microphone and the loudspeaker in different earphones is different. According to the sensitivity calibration method for the left and right speakers of the wireless headset, the gain values of the left and right headset speakers are recalculated by using the sensitivity difference values of the speakers and the target microphones in the left and right headsets, the sensitivity of the speakers in the left and right headsets is calibrated by adjusting the difference of the sensitivity of the gain value balance hardware, the sensitivity of the speakers in the left and right headsets is ensured to be consistent, and the user experience is improved. Compared with the related art, the earphone on one side does not need to be replaced for multiple times, and the sensitivity testing efficiency is improved. The application also discloses a sensitivity calibration device for the left loudspeaker and the right loudspeaker of the wireless earphone, an earphone box and a computer readable storage medium, and the technical effects can be realized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a flow chart illustrating a method for calibrating sensitivity of left and right speakers of a wireless headset according to an exemplary embodiment;
FIG. 2 is a detailed flowchart of step S101 in FIG. 1;
fig. 3 is a flow chart illustrating another method for calibrating the sensitivity of left and right speakers of a wireless headset according to an exemplary embodiment;
FIG. 4 is a block diagram illustrating a system for calibrating the sensitivity of left and right speakers of a wireless headset according to an exemplary embodiment;
fig. 5 is a block diagram illustrating a sensitivity calibration apparatus for left and right speakers of a wireless headset according to an exemplary embodiment;
fig. 6 is a block diagram illustrating an earphone box according to an exemplary embodiment.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
The embodiment of the application discloses a method for calibrating the sensitivity of left and right loudspeakers of a wireless earphone, which improves the efficiency of testing the sensitivity consistency of the left and right loudspeakers.
Referring to fig. 1, a flowchart of a sensitivity calibration method for left and right speakers of a wireless headset according to an exemplary embodiment is shown, as shown in fig. 1, including:
s101: when the wireless earphone is in a box state, acquiring a first sensitivity difference value, a first sensitivity and a second sensitivity of target microphones of a left earphone and a right earphone;
the first sensitivity is acquired by a target microphone in the left earphone when a loudspeaker in the left earphone sends a first detection signal with a preset frequency, the second sensitivity is acquired by a target microphone in the right earphone when a loudspeaker in the right earphone sends a second detection signal with the preset frequency, and the target microphone is a microphone close to the loudspeaker in a communication microphone;
the execution main body of this embodiment may be an earphone box, and in this step, it is identified whether the wireless earphone is in a box state. Specifically, the detection can be performed by a hall sensor in the wireless headset, that is, this step may include performing in-box detection on the wireless headset by the hall sensor. Of course, the identification may also be performed by a pin in the wireless headset, and is not particularly limited herein.
In the hardware design of the wireless headset, the uplink noise reduction algorithm of the call microphone generally requires that the distance between the main microphone and the auxiliary microphone is about 20mm, and the uplink noise reduction effect of the call is affected when the distance is too short, and the wireless headset is small in size, so that the main microphone and the auxiliary microphone are usually located at two ends of the wireless headset, and the auxiliary microphone is the target microphone in the step, and is located at the upper end of the wireless headset close to the loudspeaker and opposite to the main microphone.
When the wireless headset is in the box state, the first sensitivity and the second sensitivity are acquired respectively. The first sensitivity and the second sensitivity here are acquired with the target microphone described above. Specifically, a calibration instruction is sent to the left earphone, so that a loudspeaker of the left earphone can send the first detection signal conveniently, and a target microphone in the left earphone is used for acquiring the first sensitivity; sending a calibration instruction to the right earphone so that a loudspeaker of the right earphone can send the second detection signal, and acquiring by using a target microphone in the right earphone to obtain the second sensitivity; receiving the first sensitivity sent by a target microphone in the left earphone and the second sensitivity sent by a target microphone in the right earphone. In specific implementation, the control chip of the left earphone enables the left speaker to emit a 1kHz single-frequency signal, the single-frequency signal is picked up by the target microphones of the left and right earphones, the receiving sensitivity of the left target microphone for the left speaker to generate sound, namely the first sensitivity, and the receiving sensitivity of the right target microphone for the left speaker to generate sound are calculated and stored. And the control chip of the left earphone enables the right loudspeaker to emit the same 1kHz single-frequency signal, so that the receiving sensitivity, namely the second sensitivity, of the right target microphone for the right loudspeaker to generate sound and the receiving sensitivity, namely the receiving sensitivity, of the left target microphone for the right loudspeaker to generate sound are obtained and stored.
The sensitivity difference in this step is the difference between the sensitivities externally presented by the loudspeakers and microphones in the left and right earphones, and is affected by the hardware sensitivity of the left and right earphones and the gain value of the loudspeakers. The embodiment does not limit the specific obtaining manner, for example, the obtaining method may be based on a standard wireless headset, and specifically, the step of obtaining the first sensitivity difference value of the target microphones of the left headset and the right headset includes: calculating a position sensitivity difference of target microphones of the left earphone and the right earphone; the position sensitivity difference is a difference between the first sensitivity and a third sensitivity or a difference between the second sensitivity and a fourth sensitivity, the third sensitivity is a sensitivity acquired by a target microphone in the right earphone when the speaker in the left earphone transmits the first detection signal, and the fourth sensitivity is a sensitivity acquired by the target microphone in the left earphone when the speaker in the right earphone transmits the second detection signal; taking the difference value between the position sensitivity difference value and a preset value as a first sensitivity difference value of target microphones of the left earphone and the right earphone; the preset value is the position sensitivity difference value of target microphones of a left earphone and a right earphone in the standard wireless earphone.
The position sensitivity difference is a sensitivity difference caused by different distances between different receiving sources and the same transmitting source, and is a difference between the receiving sensitivity of the left-side target microphone for sounding from the left speaker and the receiving sensitivity of the right-side target microphone for sounding from the left speaker, namely, a difference between the first sensitivity and the third sensitivity, or a difference between the receiving sensitivity of the right-side target microphone for sounding from the right speaker and the receiving sensitivity of the left-side target microphone for sounding from the right speaker, namely, a difference between the second sensitivity and the fourth sensitivity. The sensitivity of the loudspeaker and the microphone in the left earphone and the right earphone in the standard wireless earphone to the outside is the same, the position sensitivity difference value of the standard wireless earphone, namely the preset value, is the difference value of the left target microphone receiving sensitivity of the left loudspeaker sounding and the right target microphone receiving sensitivity of the left loudspeaker sounding in the standard wireless earphone, or the difference value of the right target microphone receiving sensitivity of the right loudspeaker sounding and the left target microphone receiving sensitivity of the right loudspeaker sounding, the specific measurement formula is similar to the above formula, and the description is omitted. The sensitivity difference of the left earphone and the right earphone in the step is the difference between the position sensitivity difference obtained by measurement and a preset value.
For the triggering condition of the sensitivity calibration, this embodiment is not specifically limited, for example, a key may be set on the earphone box, and this step is triggered when the user triggers the key, that is, before the step of sending the calibration instruction to the left earphone, the method further includes: generating the calibration command when a key on the earphone box is triggered; wherein the keys comprise physical keys or touch keys. Of course, the user may also trigger through the terminal, and the terminal sends the calibration instruction to the earphone box.
S102: calculating a second sensitivity difference of the left earphone speaker and the right earphone speaker using the first sensitivity difference, the first sensitivity, and the second sensitivity, and calculating a first gain of the left earphone speaker and a second gain of the right earphone speaker using the second sensitivity difference;
in this step, the difference between the first sensitivity and the second sensitivity is set as a sensitivity calibration value, and the difference between the sensitivity calibration value and the first sensitivity difference is set as the second sensitivity difference. The sensitivity calibration value here is the difference of the hardware sensitivities of the speakers in the left and right earphones, that is, the measured sensitivity difference on the premise that the relative positions of the receiving source and the speakers in the left and right earphones are consistent, and the difference between the sensitivity calibration value and the externally-expressed sensitivity difference of the left and right earphones measured in the previous step is taken as the second sensitivity difference to be calibrated.
Recalculating a gain value of a left earphone speaker and a right earphone speaker based on a second sensitivity difference value, specifically, acquiring a first initial gain of the left earphone speaker and a second initial gain of the right earphone speaker; taking a difference between the first initial gain and half of the second sensitivity difference value as the first gain, and taking a sum of the second initial gain and half of the second sensitivity difference value as the second gain. That is, if the second sensitivity difference is Δ (Sen _ SPK), the initial gains of the earphone box reading the left and right earphones are gain L and gain R, respectively. The new gain of the left ear of the earphone box is gain L-delta (Sen _ SPK)/2, and the new gain of the right ear is gain R + -delta (Sen _ SPK)/2.
S103: writing the first gain to the speaker of the left earpiece and the second gain to the speaker of the right earpiece to complete sensitivity calibration.
In this step, the headphone box writes the first gain and the second gain calculated in the previous step into the speakers of the left headphone and the right headphone, respectively, to complete the sensitivity calibration.
The sensitivity of the loudspeaker and the microphone in the earphone is influenced by the hardware sensitivity of the earphone and the gain value of the loudspeaker, and the sensitivity of the loudspeaker and the microphone in different earphones is different when the gain values are consistent due to the fact that the hardware sensitivity of the microphone and the loudspeaker in different earphones is different. According to the sensitivity calibration method for the left loudspeaker and the right loudspeaker of the wireless earphone, the gain values of the left earphone loudspeaker and the right earphone loudspeaker are recalculated by using the sensitivity difference values of the left earphone loudspeaker and the right earphone loudspeaker and the target microphone, the sensitivity calibration of the left earphone loudspeaker and the right earphone loudspeaker is realized by adjusting the difference of the gain values to balance the hardware sensitivity, the consistency of the sensitivity of the left earphone loudspeaker and the right earphone loudspeaker is ensured, and the user experience is improved. Compared with the related art, the earphone on one side does not need to be replaced for multiple times, and the sensitivity testing efficiency is improved.
As described in detail below in step S101 of the above embodiment, specifically, as shown in fig. 2, the method includes:
s11: sending a calibration instruction to the left earphone so that a loudspeaker of the left earphone can send the first detection signal, and acquiring the first sensitivity by using a target microphone in the left earphone;
s12: sending a calibration instruction to the right earphone so that a loudspeaker of the right earphone can send the second detection signal, and acquiring by using a target microphone in the right earphone to obtain the second sensitivity;
s13: receiving the first sensitivity sent by a target microphone in the left earphone and the second sensitivity sent by a target microphone in the right earphone;
in specific implementation, the control chip of the left earphone enables the left speaker to emit a 1kHz single-frequency signal, the single-frequency signal is picked up by the target microphones of the left and right earphones, the receiving sensitivity of the left target microphone for the left speaker to generate sound, namely the first sensitivity, and the receiving sensitivity of the right target microphone for the left speaker to generate sound, namely the third sensitivity in the subsequent steps are calculated and stored. And the control chip of the left earphone enables the right loudspeaker to emit the same 1kHz single-frequency signal, so that the receiving sensitivity, namely the second sensitivity, of the right target microphone for the right loudspeaker to generate sound and the receiving sensitivity, namely the receiving sensitivity, of the left target microphone for the right loudspeaker to generate sound are obtained and stored.
S14: acquiring the first sensitivity and a third sensitivity acquired by a target microphone in the right earphone; wherein the third sensitivity is a sensitivity acquired by a target microphone in the right earphone when the speaker in the left earphone transmits the first detection signal;
s15: taking a difference value between the first sensitivity and the third sensitivity as a position sensitivity difference value of target microphones of the left earphone and the right earphone, and taking a difference value between the position sensitivity difference value and a preset value as a first sensitivity difference value of the target microphones of the left earphone and the right earphone; wherein the preset value is a position sensitivity difference value in a standard wireless earphone.
In one embodiment, the position sensitivity difference is a difference between a left-side speaker speaking left-side target microphone receiving sensitivity and a left-side speaker speaking right-side target microphone receiving sensitivity, i.e., a difference between the first sensitivity and the third sensitivity. The sensitivity of the loudspeaker and the microphone in the left earphone and the right earphone in the standard wireless earphone to the outside is the same, the position sensitivity difference value of the standard wireless earphone, namely the preset value, is the difference value of the left target microphone receiving sensitivity of the left loudspeaker sounding and the left target microphone receiving sensitivity of the left loudspeaker sounding in the standard wireless earphone, the specific measurement formula is similar to the above formula, and the description is omitted. The sensitivity difference of the left earphone and the right earphone in the step is the difference between the position sensitivity difference obtained by measurement and a preset value.
The embodiment of the application discloses a method for calibrating the sensitivity of a left loudspeaker and a right loudspeaker of a wireless earphone. Specifically, the method comprises the following steps:
referring to fig. 3, a flowchart of another method for calibrating the sensitivity of left and right speakers of a wireless headset according to an exemplary embodiment is shown, and as shown in fig. 3, the method includes:
s201: when the wireless earphone is in a box state, acquiring a first sensitivity difference value, a first sensitivity and a second sensitivity of target microphones of a left earphone and a right earphone;
the first sensitivity is acquired by a target microphone in the left earphone when a loudspeaker in the left earphone sends a first detection signal with a preset frequency, the second sensitivity is acquired by the target microphone in the right earphone when the loudspeaker in the right earphone sends a second detection signal with the preset frequency, the target microphone is a microphone close to the loudspeaker in a call microphone, and the third sensitivity is acquired by the target microphone in the right earphone when the loudspeaker in the left earphone sends the first detection signal;
s202: taking the difference value between the first sensitivity and the third sensitivity as the position sensitivity difference value of the target microphones of the left earphone and the right earphone, and taking the difference value between the position sensitivity difference value and a preset value as the first sensitivity difference value of the target microphones of the left earphone and the right earphone; wherein the preset value is a position sensitivity difference value in a standard wireless earphone.
S203: judging whether the position sensitivity difference is the same as the preset value or not; if not, entering S204;
in this step, the measured position sensitivity difference is compared with the position sensitivity difference in the standard wireless headset, and if the measured position sensitivity difference is smaller than the position sensitivity difference in the standard wireless headset, it is indicated that the sensitivity of the left-ear speaker is higher than that of the right-ear speaker. If so, the left ear speaker is less sensitive than the right ear speaker. If the two-ear speaker sensitivity is the same, the sensitivity of the two-ear speaker is the same, and calibration is not needed.
S204: and taking the difference value of the first sensitivity and the second sensitivity as a sensitivity calibration value, and taking the difference value of the sensitivity calibration value and the sensitivity difference value as the second sensitivity difference value.
S205: acquiring a first initial gain of the left earphone speaker and a second initial gain of the right earphone speaker;
s206: taking a difference between the first initial gain and half of the second sensitivity difference value as the first gain, and taking a sum of the second initial gain and half of the second sensitivity difference value as the second gain.
S207: writing the first gain to the speaker of the left earpiece and the second gain to the speaker of the right earpiece to complete sensitivity calibration.
Therefore, in order to ensure the consistency of the sensitivity of the left and right earphones and provide the best experience for the user, the gain values of the left and right earphones are recalculated by triggering the keys on the earphone box according to the sensitivity difference value of the target microphones and the speakers of the left and right earphones, and the calibration of the sensitivity of the speakers in the left and right earphones is realized by adjusting the difference of the sensitivity of the balance hardware of the gain values. When a user uses the product, if one earphone is lost or damaged, any single earphone can be matched with the product, and sensitivity calibration is carried out by utilizing the mode, so that the matching of the double-ear earphones is realized.
Referring to an application example provided by the present application, as shown in fig. 4, the sensitivity calibration system includes a left earphone speaker L1, a left auxiliary microphone L2, a left control chip L3, a right earphone speaker R1, a right auxiliary microphone R2, a right control chip R3, and an earphone box button C1. L1, L2 are connected with L3 through leads or flexible circuit boards, and R1 and R2 are connected with R3 through leads or flexible circuit boards. The earphone and the earphone box communicate through a Pin or other contact modes.
It is all correctly placed in the earphone box to need to ensure about, when correctly placing, left side loudspeaker, right side loudspeaker, microphone is assisted in the left side, and microphone is assisted to every product is fixed and unanimous to the right side. Pressing a key C1 on the earphone box for a long time, starting a calibration program, sending an instruction to the earphones by the earphone box, firstly enabling a left-side loudspeaker L1 to send a 1kHz single-frequency signal by a left-side control chip, respectively picking up the signals by auxiliary microphones L2 and R2 of left and right earphones, calculating the receiving sensitivity (SenL _ L) of the left-side auxiliary microphone L2 when the left-side earphone loudspeaker L1 sounds, and the receiving sensitivity (SenL _ R) of the right-side auxiliary microphone R2 when the left-side earphone loudspeaker L1 sounds, and storing the signals. Then the control chip on the right side makes the right horn R2 emit the same single frequency signal of 1kHz, resulting in the receiving sensitivity (SenR _ R) of the right auxiliary microphone R2. The right earpiece speaker R1 sounds and the left secondary microphone L2 receives sensitivity (SenR _ L).
During product design, the value of the Golden sample with the central values of the left loudspeaker, the right loudspeaker and the microphone needs to be calculated or obtained through actual test. Following the above test method, we obtained:
Golden_△S_L=Golden(SenL_L)-Golden(SenL_R)；
this difference is the difference in received horn sensitivity due to the different distances between the two MICs and the left horn, under the same left and right auxiliary microphone sensitivity. Similarly, Golden _ Δ S _ R = Golden (SenR _ R) -Golden (SenR _ L) has the same value as Golden _ Δ S _ L because of the symmetry of the product location. The value of Golden _ Δ S _ L was recorded in the control chips on the left and right sides.
When any one product is calibrated, through the above calibration degree, the following results are obtained:
Sample_△S_L=Sample(SenL_L)-Sample(SenL_R)；
this value is compared to Golden Δ S _ L and if higher, it indicates that the sensitivity of the left side secondary MIC is higher than the right side secondary MIC. If below this value, it indicates that the sensitivity of the left side MIC is lower than the right side MIC. If the two MICs are identical, the sensitivity of the two MICs is shown to be identical.
When the two MICs sensitivities are different, the difference in the sensitivities of the two MICs is obtained:
△(Sen_MIC)= Sample_△S_L-Golden_△S_L；
the difference between the left and right horn sensitivities is:
△(Sen_SPK)=Sample(SenL_L)-Sample(SenR_R)-△(Sen_MIC)；
and respectively writing gain L-delta (Sen _ SPK)/2 and gain R + - [ delta ] (Sen _ SPK)/2 into the left and right earphone control chips, wherein the gain L is the gain value of the original left earphone loudspeaker, and the gain R is the gain value of the original right earphone loudspeaker, so as to finish the calibration of the sensitivity consistency of the left and right earphone loudspeakers.
The following describes a sensitivity calibration apparatus for left and right speakers of a wireless headset according to an embodiment of the present application, and the following description describes a sensitivity calibration apparatus for left and right speakers of a wireless headset and the above description describes a sensitivity calibration method for left and right speakers of a wireless headset with reference to each other.
Referring to fig. 5, a block diagram of a sensitivity calibration apparatus for left and right speakers of a wireless headset according to an exemplary embodiment is shown, as shown in fig. 5, including:
an obtaining module 501, configured to obtain a first sensitivity difference, a first sensitivity, and a second sensitivity of target microphones of a left earphone and a right earphone when the wireless earphone is in a box state; the first sensitivity is acquired by a target microphone in the left earphone when a loudspeaker in the left earphone sends a first detection signal with a preset frequency, the second sensitivity is acquired by a target microphone in the right earphone when a loudspeaker in the right earphone sends a second detection signal with the preset frequency, and the target microphone is a microphone close to the loudspeaker in a communication microphone;
a calculating module 502, configured to calculate a second sensitivity difference of the speakers of the left earphone and the right earphone by using the first sensitivity difference, the first sensitivity, and the second sensitivity, and calculate a first gain of the left earphone speaker and a second gain of the right earphone speaker by using the second sensitivity difference;
a writing module 503, configured to write the first gain into the speaker of the left earphone and write the second gain into the speaker of the right earphone, so as to complete sensitivity calibration.
The sensitivity calibration device of speaker about wireless earphone that this application embodiment provided utilizes the sensitivity difference value of speaker, target microphone in controlling the earphone to recalculate the gain value of left and right earphone speaker, through the difference of the balanced hardware sensitivity of adjustment gain value, realizes the calibration to the sensitivity of speaker in controlling the earphone, ensures that the sensitivity of speaker is unanimous in controlling the earphone, promotes user experience and feels. Compared with the related art, the earphone on one side does not need to be replaced for multiple times, and the sensitivity testing efficiency is improved.
On the basis of the foregoing embodiment, as a preferred implementation, the obtaining module 501 includes:
the first sending unit is used for sending a calibration instruction to the left earphone so that a loudspeaker of the left earphone sends the first detection signal, and a target microphone in the left earphone is used for acquiring the first sensitivity;
the second sending unit is used for sending a calibration instruction to the right earphone so that a loudspeaker of the right earphone sends the second detection signal, and a target microphone in the right earphone is used for acquiring the second sensitivity;
a receiving unit, configured to receive the first sensitivity sent by a target microphone in the left earphone and the second sensitivity sent by a target microphone in the right earphone;
the acquisition unit is used for acquiring a first sensitivity difference value of target microphones of the left earphone and the right earphone.
On the basis of the foregoing embodiment, as a preferred implementation, the obtaining module 501 further includes:
the generating unit is used for generating the calibration command when a key on the earphone box is triggered; wherein the keys comprise physical keys or touch keys.
On the basis of the foregoing embodiment, as a preferred implementation manner, the obtaining unit is specifically a unit that calculates a position sensitivity difference of target microphones of the left earphone and the right earphone, and takes a difference between the position sensitivity difference and a preset value as a first sensitivity difference of the target microphones of the left earphone and the right earphone; the position sensitivity difference is a difference between the first sensitivity and a third sensitivity or a difference between the second sensitivity and a fourth sensitivity, the third sensitivity is a sensitivity acquired by a target microphone in the right earphone when the speaker in the left earphone transmits the first detection signal, the fourth sensitivity is a sensitivity acquired by the target microphone in the left earphone when the speaker in the right earphone transmits the second detection signal, and the preset value is a position sensitivity difference between the target microphones of the left earphone and the right earphone in the standard wireless earphone.
On the basis of the above embodiment, as a preferred implementation, the method further includes:
the judging module is used for judging whether the position sensitivity difference value is the same as the preset value or not; if not, the work flow of the calculation module 502 is started.
On the basis of the foregoing embodiment, as a preferred implementation, the calculating module 502 includes:
a first calculation unit configured to set a difference between the first sensitivity and the second sensitivity as a sensitivity calibration value, and set a difference between the sensitivity calibration value and the first sensitivity difference as the second sensitivity difference;
a second calculation unit for calculating a first gain of the left earphone speaker and a second gain of the right earphone speaker using the second sensitivity difference.
On the basis of the foregoing embodiment, as a preferred implementation manner, the second calculating unit is specifically configured to obtain a first initial gain of the left earphone speaker and a second initial gain of the right earphone speaker; a unit that takes a difference of the first initial gain and a half of the second sensitivity difference value as the first gain, and takes a sum of the second initial gain and a half of the second sensitivity difference value as the second gain.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Referring to fig. 6, a structure diagram of an earphone box 600 provided in an embodiment of the present application may include a processor 11 and a memory 12 as shown in fig. 6. The headset case 600 may also include one or more of a multimedia component 13, an input/output (I/O) interface 14, and a communication component 15.
The processor 11 is configured to control the overall operation of the earphone box 600, so as to complete all or part of the steps in the method for calibrating the sensitivity of the left and right speakers of the wireless earphone. The memory 12 is used to store various types of data to support the operations at the headset case 600, which may include, for example, instructions for any application or method operating on the headset case 600, as well as application-related data, such as contact data, messaging, pictures, audio, video, and so forth. The Memory 12 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia component 13 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 12 or transmitted via the communication component 15. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 14 provides an interface between the processor 11 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 15 is used for wired or wireless communication between the earphone box 600 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so that the corresponding Communication component 15 may include: Wi-Fi module, bluetooth module, NFC module.
In an exemplary embodiment, the headset box 600 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above-mentioned sensitivity calibration method for the left and right speakers of the wireless headset.
In another exemplary embodiment, there is also provided a computer readable storage medium including program instructions, which when executed by a processor, implement the steps of the above-described method for calibrating the sensitivity of left and right speakers of a wireless headset. For example, the computer readable storage medium may be the memory 12 including the program instructions, which are executable by the processor 11 of the earphone box 600 to perform the method for calibrating the sensitivity of the left and right speakers of the wireless earphone.
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 disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A sensitivity calibration method for left and right speakers of a wireless earphone is characterized in that the method is applied to an earphone box of the wireless earphone and comprises the following steps:
when the wireless earphone is in a box state, acquiring a first sensitivity difference value, a first sensitivity and a second sensitivity of target microphones of a left earphone and a right earphone; the first sensitivity is acquired by a target microphone in the left earphone when a loudspeaker in the left earphone sends a first detection signal with a preset frequency, the second sensitivity is acquired by a target microphone in the right earphone when a loudspeaker in the right earphone sends a second detection signal with the preset frequency, and the target microphone is a microphone close to the loudspeaker in a communication microphone;
calculating a second sensitivity difference of the left earphone speaker and the right earphone speaker using the first sensitivity difference, the first sensitivity, and the second sensitivity, and calculating a first gain of the left earphone speaker and a second gain of the right earphone speaker using the second sensitivity difference;
writing the first gain to the speaker of the left earpiece and the second gain to the speaker of the right earpiece to complete sensitivity calibration;
wherein the obtaining a first sensitivity difference of a target microphone of the left earphone and the right earphone comprises:
calculating a position sensitivity difference of target microphones of the left earphone and the right earphone; the position sensitivity difference is a difference between the first sensitivity and a third sensitivity or a difference between the second sensitivity and a fourth sensitivity, the third sensitivity is a sensitivity acquired by a target microphone in the right earphone when the speaker in the left earphone transmits the first detection signal, and the fourth sensitivity is a sensitivity acquired by the target microphone in the left earphone when the speaker in the right earphone transmits the second detection signal;
taking the difference value between the position sensitivity difference value and a preset value as a first sensitivity difference value of target microphones of the left earphone and the right earphone; the preset value is a position sensitivity difference value of target microphones of a left earphone and a right earphone in the standard wireless earphone;
wherein said calculating a second sensitivity difference for the speakers of the left and right earphones using the first sensitivity difference, the first sensitivity, and the second sensitivity comprises:
and taking the difference value of the first sensitivity and the second sensitivity as a sensitivity calibration value, and taking the difference value of the sensitivity calibration value and the first sensitivity difference value as the second sensitivity difference value.
2. The sensitivity calibration method according to claim 1, wherein the obtaining the first sensitivity difference, the first sensitivity and the second sensitivity of the target microphones of the left earphone and the right earphone comprises:
sending a calibration instruction to the left earphone so that a loudspeaker of the left earphone can send the first detection signal, and acquiring the first sensitivity by using a target microphone in the left earphone;
sending a calibration instruction to the right earphone so that a loudspeaker of the right earphone can send the second detection signal, and acquiring by using a target microphone in the right earphone to obtain the second sensitivity;
receiving the first sensitivity sent by a target microphone in the left earphone and the second sensitivity sent by a target microphone in the right earphone;
and acquiring a first sensitivity difference value of target microphones of the left earphone and the right earphone.
3. The sensitivity calibration method according to claim 2, wherein before sending the calibration instruction to the left earphone, the method further comprises:
generating a calibration command when a key on the earphone box is triggered; wherein the keys comprise physical keys or touch keys.
4. The sensitivity calibration method according to claim 1, wherein before the step of taking the difference between the position sensitivity difference and the preset value as the first sensitivity difference of the target microphones of the left earphone and the right earphone, the method further comprises:
judging whether the position sensitivity difference is the same as the preset value or not;
and if not, executing the step of taking the difference value between the position sensitivity difference values and a preset value as a first sensitivity difference value of target microphones of the left earphone and the right earphone.
5. The sensitivity calibration method according to any one of claims 1 to 4, wherein the calculating a first gain of the left earpiece speaker and a second gain of the right earpiece speaker using the second sensitivity difference comprises:
acquiring a first initial gain of the left earphone speaker and a second initial gain of the right earphone speaker;
taking a difference between the first initial gain and half of the second sensitivity difference value as the first gain, and taking a sum of the second initial gain and half of the second sensitivity difference value as the second gain.
6. The utility model provides a sensitivity calibrating device of speaker about wireless earphone which characterized in that is applied to wireless earphone's earphone box, includes:
the acquisition module is used for acquiring a first sensitivity difference value, a first sensitivity and a second sensitivity of target microphones of the left earphone and the right earphone when the wireless earphone is in a box state; the first sensitivity is acquired by a target microphone in the left earphone when a loudspeaker in the left earphone sends a first detection signal with a preset frequency, the second sensitivity is acquired by a target microphone in the right earphone when a loudspeaker in the right earphone sends a second detection signal with the preset frequency, and the target microphone is a microphone close to the loudspeaker in a communication microphone;
a calculation module, configured to calculate a second sensitivity difference of the speakers of the left earphone and the right earphone by using the first sensitivity difference, the first sensitivity, and the second sensitivity, and calculate a first gain of the left earphone speaker and a second gain of the right earphone speaker by using the second sensitivity difference;
a write module for writing the first gain to the speaker of the left earphone and the second gain to the speaker of the right earphone so as to complete sensitivity calibration;
the acquiring module comprises an acquiring unit, wherein the acquiring unit is specifically a unit for calculating a position sensitivity difference value of target microphones of the left earphone and the right earphone, and taking the difference value between the position sensitivity difference value and a preset value as a first sensitivity difference value of the target microphones of the left earphone and the right earphone; the position sensitivity difference is a difference between the first sensitivity and a third sensitivity or a difference between the second sensitivity and a fourth sensitivity, the third sensitivity is a sensitivity acquired by a target microphone in the right earphone when the speaker in the left earphone sends the first detection signal, the fourth sensitivity is a sensitivity acquired by the target microphone in the left earphone when the speaker in the right earphone sends the second detection signal, and the preset value is a position sensitivity difference between the target microphones of the left earphone and the right earphone in the standard wireless earphone;
wherein the calculation module comprises:
a first calculation unit configured to set a difference between the first sensitivity and the second sensitivity as a sensitivity calibration value, and set a difference between the sensitivity calibration value and the first sensitivity difference as the second sensitivity difference;
a second calculation unit for calculating a first gain of the left earphone speaker and a second gain of the right earphone speaker using the second sensitivity difference.
7. An earphone box of a wireless earphone, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method for calibrating the sensitivity of the left and right speakers of a wireless headset according to any one of claims 1 to 5 when executing the computer program.
8. A computer-readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method for calibrating the sensitivity of left and right speakers of a wireless headset according to any one of claims 1 to 5.
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| CN111741422B (en) * | 2020-06-09 | 2021-12-14 | 美特科技(苏州)有限公司 | Neck-wearing earphone audio calibration method and device |
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