CN114205708B - Intelligent voice touch system and method of bone conduction Bluetooth headset - Google Patents
Intelligent voice touch system and method of bone conduction Bluetooth headset Download PDFInfo
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Abstract
The invention provides an intelligent voice touch system and method of a bone conduction Bluetooth headset, wherein the bone conduction Bluetooth headset comprises a connecting bracket, a first bone conduction unit, a control unit, a battery unit, a second bone conduction unit, a first ear hook and a second ear hook; the control unit comprises a Bluetooth communication module, a processor module, a touch control module, a microphone module and a voice processing module, wherein the microphone module and the voice processing module acquire analog voice signals, the analog voice signals are amplified and filtered and then are converted into digital voice signals and are transmitted to the processor module, the processor module recognizes the digital voice signals and adjusts parameters of the bone conduction Bluetooth headset or transmits the digital voice signals to the first bone conduction unit and the second bone conduction unit, the first bone conduction unit and the second bone conduction unit convert the digital signals into vibration signals, the touch control module acquires touch signals and transmits the touch signals to the processor module, and the processor module distinguishes the touch signals and executes corresponding operations. This bone conduction bluetooth headset has set up multiple control modes such as pronunciation touch-control, makes things convenient for the diversified operation of user.
Description
Technical Field
The invention relates to the technical field of bone conduction headphones, in particular to an intelligent voice touch system and method of a bone conduction Bluetooth headphone.
Background
Unlike conventional air conduction headphones, bone conduction headphones convert sound into mechanical vibrations of different frequencies, and transmit sound waves through the skull, bone labyrinth, inner ear lymph fluid transmission, augers, acoustic nerves, auditory centers of a person. Compared with a classical air conduction earphone which generates sound waves through a vibrating diaphragm, the bone conduction earphone simplifies the step of sound wave transmission, can realize clear sound restoration in an environment with noise, can not diffuse the sound waves so as to influence others, and can also improve the confidentiality of sound transmission.
The Bluetooth headset is one of the main applications of the Bluetooth technology, can solve the problems that the conventional headset is inflexible and inconvenient to use, has the radiation quantity of one thousandth to two thousandths of the radiation of the mobile phone, is smaller in radiation and is healthier to use.
The bone conduction Bluetooth headset combines the advantages of bone conduction headset and bluetooth headset, for example, CN 205160752U's China patent of utility model discloses a touch-control bone conduction headset, including winding the earphone main part of head, earphone main part tip is equipped with the bluetooth main part, and bluetooth main part lower part is equipped with bone conduction headset, still is equipped with the touch-control button in the bluetooth main part, is equipped with the bump on the touch-control button.
The existing bone conduction Bluetooth headset has no voice control function.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an intelligent voice touch system and method for a bone conduction Bluetooth headset, which are convenient for diversified operations of users by setting various control modes such as voice touch for the bone conduction Bluetooth headset.
In order to achieve the above purpose, the specific technical scheme adopted by the invention is as follows:
An intelligent voice touch system of a bone conduction Bluetooth headset comprises a connecting bracket, a first bone conduction unit, a control unit, a battery unit, a second bone conduction unit, a first ear hook and a second ear hook, wherein two ends of the connecting bracket are respectively connected with the control unit and the battery unit, and a connecting wire is arranged in the connecting bracket; the control unit is connected with the first bone conduction unit through a first ear hook, and the battery unit is connected with the second bone conduction unit through a second ear hook; the control unit comprises a Bluetooth communication module, a processor module, a touch control module, a microphone module and a voice processing module, wherein the processor module is respectively connected with the Bluetooth communication module, the touch control module and the voice processing module, the voice processing module is connected with the microphone module, the Bluetooth communication module is used for realizing wireless data interaction of the bone conduction Bluetooth headset, the microphone module and the voice processing module are used for acquiring analog voice signals, amplifying and filtering the analog voice signals, converting the analog voice signals into digital voice signals and transmitting the digital voice signals to the processor module, the processor module recognizes the digital voice signals and adjusts parameters of the bone conduction Bluetooth headset or transmits the digital signals to the first bone conduction unit and the second bone conduction unit, the first bone conduction unit and the second bone conduction unit convert the digital signals into vibration signals, the touch control module acquires touch signals and transmits the touch signals to the processor module, and the processor module distinguishes the touch signals and executes corresponding operations;
The working modes of the bone conduction Bluetooth headset comprise a song listening mode and a conversation mode; the control unit also comprises a digital equalization module, wherein the digital equalization module is connected with the voice processing module and sends the voice signals after equalization to the processor module; the bone conduction Bluetooth headset works in a call mode, the microphone module acquires an analog voice signal, the analog voice signal is transmitted to the digital equalization module after being filtered, amplified and AD converted by the voice processing module, the digital equalization module enhances the voice signal and compensates the damage of the voice signal in gain, and the analog voice signal is transmitted to the mobile phone through the processor module and the Bluetooth communication module; the digital equalization module works in a song listening mode, the processor module sends the digital audio signals acquired from the Bluetooth communication module to the digital equalization module, the digital equalization module carries out equalization processing on the received digital audio signals according to preset equalization parameters, the preset equalization parameters are obtained by head-related transfer functions of attenuation characteristics from the bone conduction earphone to the tympanic membrane, the head-related transfer functions are acquired through measurement experiments on users, or the head-related transfer functions are acquired from a head-related transfer function database according to the gender and age of the users;
let the digital audio signal be E 0 (f), the left ear signal be The right ear signal isWherein H L (f) is the HRTF of the left ear, H R (f) is the HRTF of the right ear, f is the frequency, and tone balance of digital audio signals can be realized through power balance, so that the condition of tone damage is improved; wherein the left ear signal corresponds to the first bone conduction unit and the right ear signal corresponds to the second bone conduction unit;
The working mode of the bone conduction Bluetooth headset further comprises a dormant mode, in the dormant mode, control instructions corresponding to touch gestures or voice signals comprise noise elimination, if the processor module receives the control instructions for noise elimination, noise of the external environment is obtained through the microphone module and the voice processing module, an inverted signal is generated and transmitted to the first bone conduction unit and the second bone conduction unit, the first bone conduction unit and the second bone conduction unit convert the inverted signal into a vibration signal, and surrounding environment noise is reduced; the microphone module comprises at least three microphones, and is set as a first microphone, a second microphone and a third microphone, wherein the first microphone is arranged at the joint of the control unit and the first ear hook, the second microphone is arranged at the joint of the control unit and the connecting bracket, and the third microphone is arranged at the battery unit; if the bone conduction Bluetooth earphone is in a song listening mode, the three microphones are all in a dormant state, if the bone conduction Bluetooth earphone is in a conversation mode, the first microphone and the second microphone are awakened, sound emitted by a user is obtained, noise in the sound is eliminated so as to be clearly transmitted to the mobile phone, and if the bone conduction Bluetooth earphone is in the dormant mode and noise elimination is needed, the first microphone/the second microphone and the third microphone are awakened, binaural environmental noise of the user is obtained, and inverted sound waves are generated so as to reduce the surrounding environmental noise of the user;
For noise cancellation in talk mode, let the sound source signal be s (t), the signal acquired by the first microphone be y 1(t)＝s(t)*g1+v1(t)＝x1(t)+v1 (t), the signal acquired by the second microphone be y 2(t)＝s(t)*g2+v2(t)＝x2(t)+v2(t),g1 the acoustic path impulse response of the sound source to the first microphone, g 2 the acoustic path impulse response of the sound source to the second microphone, x 1 (t) and x 2 (t) the speech component, v 1 (t) and v 2 (t) the noise component; the signals collected by the first microphone and the second microphone are subjected to short-time Fourier transform, then a voice reference model Ys (k, m) and a noise reference model Yn (k, m) are obtained through a beam forming matrix and a blocking matrix, and after proper time delay, ys (k, m) is combined with Yn (k, m) passing through a filter, after short-time Fourier inverse transform is carried out, an enhanced voice signal is obtained Get/>, when noise aloneFor updating the filter Wn;
for noise cancellation in sleep mode, the processor module implements active noise reduction by FxLMS algorithm.
Preferably, a power button is arranged outside the battery unit.
Preferably, the battery unit further includes a charging port.
Preferably, the processor module performs an alignment operation on the digital voice signals transmitted to the first and second bone conduction units according to a distance difference between the first and second bone conduction units.
Preferably, the connecting bracket, the shell of the first bone conduction unit, the shell of the control unit, the shell of the battery unit, the shell of the second bone conduction unit, the shell of the first ear hook and the shell of the second ear hook are made of plastic or silica gel or rubber.
An intelligent voice touch method of a bone conduction Bluetooth headset is realized based on an intelligent voice touch system of the bone conduction Bluetooth headset, and specifically comprises the following steps:
S1, presetting control instructions corresponding to touch gestures and voice signals of a bone conduction Bluetooth headset in different working modes;
s2, the processor module judges the current working mode of the bone conduction Bluetooth headset;
S3, judging whether a touch gesture or a voice signal exists or not;
s4, recognizing touch gestures or voice signals, and executing corresponding control instructions.
The invention has the beneficial effects that: the bone conduction Bluetooth headset is provided with a plurality of control modes such as voice touch control and the like, so that the bone conduction Bluetooth headset is convenient for diversified operations of users.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a bone conduction bluetooth headset according to the present invention;
FIG. 2 is a schematic block diagram of a control unit;
FIG. 3 is a flow chart of an intelligent voice touch method of the bone conduction Bluetooth headset of the invention;
In the figure, a 1-connection bracket, a 2-first bone conduction unit, a 3-control unit, a 4-battery unit, a 5-second bone conduction unit, a 6-first ear hook and a 7-second ear hook.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, other embodiments that may be obtained by those of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Fig. 1 is a schematic structural diagram of a bone conduction bluetooth headset, wherein the positions of a battery unit and a control unit can be exchanged, and if the positions of the battery unit and the control unit are exchanged, the battery unit is connected with a first ear hook, and the control unit is connected with a second ear hook.
As shown in fig. 2, the invention provides an intelligent voice touch system of a bone conduction bluetooth headset, the bone conduction bluetooth headset comprises a connecting bracket 1, a first bone conduction unit 2, a control unit 3, a battery unit 4, a second bone conduction unit 5, a first ear hook 6 and a second ear hook 7, wherein two ends of the connecting bracket 1 are respectively connected with the control unit 3 and the battery unit 4, and a connecting wire is arranged in the connecting bracket; the control unit 3 is connected with the first bone conduction unit 2 through a first ear hook 6, and the battery unit 4 is connected with the second bone conduction unit 5 through a second ear hook 7; the control unit 3 comprises a Bluetooth communication module, a processor module, a touch control module, a microphone module and a voice processing module, wherein the processor module is respectively connected with the Bluetooth communication module, the touch control module and the voice processing module, the voice processing module is connected with the microphone module, the Bluetooth communication module is used for realizing wireless data interaction of the bone conduction Bluetooth headset, the microphone module and the voice processing module are used for acquiring analog voice signals, converting the analog voice signals into digital voice signals after amplifying and filtering and transmitting the digital voice signals to the processor module, the processor module recognizes the digital voice signals and adjusts parameters of the bone conduction Bluetooth headset or transmits the digital signals to the first bone conduction unit 2 and the second bone conduction unit 5, the first bone conduction unit 2 and the second bone conduction unit 5 convert the digital signals into vibration signals, the touch control module acquires touch signals and transmits the touch signals to the processor module, and the processor module distinguishes the touch signals and executes corresponding operations.
The working modes of the bone conduction Bluetooth headset comprise a song listening mode and a conversation mode, in the song listening mode, corresponding touch gestures are set for functions required by songs such as last song, next song, pause and play start, and voice signals are set as names of the functions. In the call mode, touch gestures and voice signals are set for the functions required by the calls such as on-hook and off-hook.
Preferably, a power button is arranged outside the battery unit, and the power button can be used for switching on and switching off. The battery cell also includes a charging port. Button cells or lithium cells are arranged in the battery unit, and if the button cells are used, a charging port is not required.
Preferably, the processor module performs an alignment operation on the digital voice signals transmitted to the first and second bone conduction units 2 and 5 according to a distance difference between the first and second bone conduction units 2 and 5. Let the distance difference between the first bone conduction unit 2 and the second bone conduction unit 5 be d, the data transmission speed be v, the time difference t=d/v, the processor module is connected to the first bone conduction unit through a delay, or a blank signal with a time length t is inserted before the digital voice signal before being sent to the first bone conduction unit.
Preferably, the microphone module is provided with a plurality of microphones at different positions, the plurality of microphones acquire voice signals and environmental noise, the voice signals and the environmental noise are processed by the voice processing module and then transmitted to the processor module, and the processor module transmits the voice signals after noise reduction processing to the Bluetooth communication module. Specifically, the processor module transmits the noise-reduced voice signal to the bluetooth communication module, which is performed in a call mode.
Preferably, the connecting bracket, the shell of the first bone conduction unit, the shell of the control unit, the shell of the battery unit, the shell of the second bone conduction unit, the shell of the first ear hook and the shell of the second ear hook are made of plastic or silica gel or rubber.
Preferably, the control unit further comprises a digital equalization module, the digital equalization module is connected with the voice processing module, and the digital equalization module sends the voice signal after equalization processing to the processor module. In this embodiment, the bone conduction bluetooth headset works in a call mode, the microphone module obtains an analog voice signal, the analog voice signal is transmitted to the digital equalization module after being filtered, amplified, AD converted and the like by the voice processing module, the digital equalization module enhances the voice signal and compensates the damage of the voice signal, and the analog voice signal is transmitted to the mobile phone by the processor module and the bluetooth communication module. On the basis, the digital equalization module can also work in a song listening mode, the processor module sends the digital audio signals acquired from the Bluetooth communication module to the digital equalization module, the digital equalization module carries out equalization processing on the received digital audio signals according to preset equalization parameters, the preset equalization parameters are head-related transfer functions (head-related transferfunction, HRTF) of the attenuation characteristics of the bone conduction earphone to the tympanic membrane, the head-related transfer functions can be acquired through measurement experiments on users, and the head-related transfer functions can also be acquired from a head-related transfer function database according to the gender and age of the users.
Let the digital audio signal be E 0 (f), the left ear signal beThe right ear signal isWherein H L (f) is the HRTF of the left ear, H R (f) is the HRTF of the right ear, f is the frequency, and tone balance of digital audio signals can be realized through power balance, so that the condition of tone damage is improved; wherein the left ear signal corresponds to the first bone conduction unit and the right ear signal corresponds to the second bone conduction unit.
In other embodiments, the digital equalization module may also be connected to the bluetooth communication module through a controllable switch, where the controllable switch is controlled by the processor module, and the processor module adjusts the on/off of the controllable switch according to the working mode.
In other embodiments, the working mode of the bone conduction bluetooth headset further includes a sleep mode, in the sleep mode, the control instruction corresponding to the touch gesture or the voice signal includes noise cancellation, if the processor module receives the control instruction of noise cancellation, the processor module obtains the noise of the external environment through the microphone module and the voice processing module, generates an inverted signal and transmits the inverted signal to the first bone conduction unit 2 and the second bone conduction unit 5, and the first bone conduction unit 2 and the second bone conduction unit 5 convert the inverted signal into a vibration signal, so that the noise of the surrounding environment is reduced. In this embodiment, the microphone module includes at least three microphones, which are a first microphone, a second microphone, and a third microphone, where the first microphone is disposed at a connection between the control unit and the first ear hook, the second microphone is disposed at a connection between the control unit and the connection bracket, and the third microphone is disposed at the battery unit. If the bone conduction Bluetooth headset is in a song listening mode, the three microphones are all in a dormant state, if the bone conduction Bluetooth headset is in a conversation mode, the first microphone and the second microphone are awakened, sound emitted by a user is obtained, noise in the sound is eliminated, the sound is clearly transmitted to the mobile phone, if the bone conduction Bluetooth headset is in the dormant mode and noise elimination is needed, the first microphone/the second microphone and the third microphone are awakened, binaural environmental noise of the user is obtained, and inverted sound waves are generated to reduce surrounding environmental noise of the user.
For noise cancellation in talk mode, let the sound source signal be s (t), the signal acquired by the first microphone be y 1(t)＝s(t)*g1+v1(t)＝x1(t)+v1 (t), the signal acquired by the second microphone be y 2(t)＝s(t)*g2+v2(t)＝x2(t)+v2(t),g1 the acoustic path impulse response of the sound source to the first microphone, g 2 the acoustic path impulse response of the sound source to the second microphone, x 1 (t) and x 2 (t) the speech component, v 1 (t) and v 2 (t) the noise component; the signals collected by the first microphone and the second microphone are subjected to short-time Fourier transform, then a voice reference model Ys (k, m) and a noise reference model Yn (k, m) are obtained through a beam forming matrix and a blocking matrix, and after proper time delay, ys (k, m) is combined with Yn (k, m) passing through a filter, after short-time Fourier inverse transform is carried out, an enhanced voice signal is obtainedGet/>, when noise aloneFor updating the filter Wn.
For noise cancellation in sleep mode, the processor module implements active noise reduction by FxLMS algorithm.
As shown in fig. 3, the invention further provides an intelligent voice touch method of the bone conduction bluetooth headset, which is realized based on the intelligent voice touch system of the bone conduction bluetooth headset, and specifically comprises the following steps:
S1, presetting control instructions corresponding to touch gestures and voice signals of a bone conduction Bluetooth headset in different working modes;
The working modes of the bone conduction Bluetooth headset comprise a song listening mode and a conversation mode, in the song listening mode, corresponding touch gestures are set for functions required by songs such as last song, next song, pause and play start, and voice signals are set as names of the functions. In the call mode, touch gestures and voice signals are set for the functions required by the calls such as on-hook and off-hook.
S2, the processor module judges the current working mode of the bone conduction Bluetooth headset; in different working modes, the touch gestures may be the same, so that the control instruction corresponding to the touch gestures can be accurately judged by judging the current working mode of the bone conduction Bluetooth headset.
S3, judging whether a touch gesture or a voice signal exists or not; if the touch gesture or the voice signal does not exist, repeating the step until a signal for ending or changing the working mode is received.
And S4, if the touch gesture or the voice signal exists, identifying the touch gesture or the voice signal, and executing a corresponding control instruction.
In other embodiments, the working mode of the bone conduction bluetooth headset further includes a sleep mode, in the sleep mode, the control instruction corresponding to the touch gesture or the voice signal includes noise cancellation, if the processor module receives the control instruction of noise cancellation, the processor module obtains the noise of the external environment through the microphone module and the voice processing module, generates an inverted signal and transmits the inverted signal to the first bone conduction unit 2 and the second bone conduction unit 5, and the first bone conduction unit 2 and the second bone conduction unit 5 convert the inverted signal into a vibration signal, so that the noise of the surrounding environment is reduced. The microphone module comprises at least three microphones, and is set to be a first microphone, a second microphone and a third microphone, wherein the first microphone is arranged at the joint of the control unit and the first ear hook, the second microphone is arranged at the joint of the control unit and the connecting bracket, and the third microphone is arranged at the battery unit. If the bone conduction Bluetooth headset is in a song listening mode, the three microphones are all in a dormant state, if the bone conduction Bluetooth headset is in a conversation mode, the first microphone and the second microphone are awakened, sound emitted by a user is obtained, noise in the sound is eliminated, the sound is clearly transmitted to the mobile phone, if the bone conduction Bluetooth headset is in the dormant mode and noise elimination is needed, the first microphone/the second microphone and the third microphone are awakened, binaural environmental noise of the user is obtained, and inverted sound waves are generated to reduce surrounding environmental noise of the user.
For noise cancellation in talk mode, let the sound source signal be s (t), the signal acquired by the first microphone be y 1(t)＝s(t)*g1+v1(t)＝x1(t)+v1 (t), the signal acquired by the second microphone be y 2(t)＝s(t)*g2+v2(t)＝x2(t)+v2(t),g1 the acoustic path impulse response of the sound source to the first microphone, g 2 the acoustic path impulse response of the sound source to the second microphone, x 1 (t) and x 2 (t) the speech component, v 1 (t) and v 2 (t) the noise component; the signals collected by the first microphone and the second microphone are subjected to short-time Fourier transform, then a voice reference model Ys (k, m) and a noise reference model Yn (k, m) are obtained through a beam forming matrix and a blocking matrix, and after proper time delay, ys (k, m) is combined with Yn (k, m) passing through a filter, after short-time Fourier inverse transform is carried out, an enhanced voice signal is obtainedGet/>, when noise aloneFor updating the filter Wn.
For noise cancellation in sleep mode, the processor module implements active noise reduction by FxLMS algorithm.
The invention has the beneficial effects that: the bone conduction Bluetooth headset is provided with a plurality of control modes such as voice touch control and the like, so that the bone conduction Bluetooth headset is convenient for diversified operations of users.
With the above description of the preferred embodiments according to the present invention as a teaching, those skilled in the art can make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of the claims.
Claims (6)
1. The intelligent voice touch system of the bone conduction Bluetooth headset is characterized in that the bone conduction Bluetooth headset comprises a connecting bracket, a first bone conduction unit, a control unit, a battery unit, a second bone conduction unit, a first ear hook and a second ear hook, wherein two ends of the connecting bracket are respectively connected with the control unit and the battery unit, and a connecting wire is arranged in the connecting bracket; the control unit is connected with the first bone conduction unit through a first ear hook, and the battery unit is connected with the second bone conduction unit through a second ear hook; the control unit comprises a Bluetooth communication module, a processor module, a touch control module, a microphone module and a voice processing module, wherein the processor module is respectively connected with the Bluetooth communication module, the touch control module and the voice processing module, the voice processing module is connected with the microphone module, the Bluetooth communication module is used for realizing wireless data interaction of the bone conduction Bluetooth headset, the microphone module and the voice processing module are used for acquiring analog voice signals, amplifying and filtering the analog voice signals, converting the analog voice signals into digital voice signals and transmitting the digital voice signals to the processor module, the processor module recognizes the digital voice signals and adjusts parameters of the bone conduction Bluetooth headset or transmits the digital signals to the first bone conduction unit and the second bone conduction unit, the first bone conduction unit and the second bone conduction unit convert the digital signals into vibration signals, the touch control module acquires touch signals and transmits the touch signals to the processor module, and the processor module distinguishes the touch signals and executes corresponding operations;
The working modes of the bone conduction Bluetooth headset comprise a song listening mode and a conversation mode; the control unit also comprises a digital equalization module, wherein the digital equalization module is connected with the voice processing module and sends the voice signals after equalization to the processor module; the bone conduction Bluetooth headset works in a call mode, the microphone module acquires an analog voice signal, the analog voice signal is transmitted to the digital equalization module after being filtered, amplified and AD converted by the voice processing module, the digital equalization module enhances the voice signal and compensates the damage of the voice signal in gain, and the analog voice signal is transmitted to the mobile phone through the processor module and the Bluetooth communication module; the digital equalization module works in a song listening mode, the processor module sends the digital audio signals acquired from the Bluetooth communication module to the digital equalization module, the digital equalization module carries out equalization processing on the received digital audio signals according to preset equalization parameters, the preset equalization parameters are obtained by head-related transfer functions of attenuation characteristics from the bone conduction earphone to the tympanic membrane, the head-related transfer functions are acquired through measurement experiments on users, or the head-related transfer functions are acquired from a head-related transfer function database according to the gender and age of the users;
let the digital audio signal be E 0 (f), the left ear signal be The right ear signal isWherein H L (f) is the HRTF of the left ear, H R (f) is the HRTF of the right ear, f is the frequency, and tone balance of digital audio signals can be realized through power balance, so that the condition of tone damage is improved; wherein the left ear signal corresponds to the first bone conduction unit and the right ear signal corresponds to the second bone conduction unit;
The working mode of the bone conduction Bluetooth headset further comprises a dormant mode, in the dormant mode, control instructions corresponding to touch gestures or voice signals comprise noise elimination, if the processor module receives the control instructions for noise elimination, noise of the external environment is obtained through the microphone module and the voice processing module, an inverted signal is generated and transmitted to the first bone conduction unit and the second bone conduction unit, the first bone conduction unit and the second bone conduction unit convert the inverted signal into a vibration signal, and surrounding environment noise is reduced; the microphone module comprises at least three microphones, and is set as a first microphone, a second microphone and a third microphone, wherein the first microphone is arranged at the joint of the control unit and the first ear hook, the second microphone is arranged at the joint of the control unit and the connecting bracket, and the third microphone is arranged at the battery unit; if the bone conduction Bluetooth earphone is in a song listening mode, the three microphones are all in a dormant state, if the bone conduction Bluetooth earphone is in a conversation mode, the first microphone and the second microphone are awakened, sound emitted by a user is obtained, noise in the sound is eliminated so as to be clearly transmitted to the mobile phone, and if the bone conduction Bluetooth earphone is in the dormant mode and noise elimination is needed, the first microphone/the second microphone and the third microphone are awakened, binaural environmental noise of the user is obtained, and inverted sound waves are generated so as to reduce the surrounding environmental noise of the user;
For noise cancellation in talk mode, let the sound source signal be s (t), the signal acquired by the first microphone be y 1(t)＝s(t)*g1+v1(t)＝x1(t)+v1 (t), the signal acquired by the second microphone be y 2(t)＝s(t)*g2+v2(t)＝x2(t)+v2(t),g1 the acoustic path impulse response of the sound source to the first microphone, g 2 the acoustic path impulse response of the sound source to the second microphone, x 1 (t) and x 2 (t) the speech component, v 1 (t) and v 2 (t) the noise component; the signals collected by the first microphone and the second microphone are subjected to short-time Fourier transform, then a voice reference model Ys (k, m) and a noise reference model Yn (k, m) are obtained through a beam forming matrix and a blocking matrix, and after proper time delay, ys (k, m) is combined with Yn (k, m) passing through a filter, after short-time Fourier inverse transform is carried out, an enhanced voice signal is obtained Get/>, when noise aloneFor updating the filter Wn;
for noise cancellation in sleep mode, the processor module implements active noise reduction by FxLMS algorithm.
2. The intelligent voice touch system of the bone conduction Bluetooth headset of claim 1, wherein a power button is arranged outside the battery unit.
3. The intelligent voice touch system of a bone conduction bluetooth headset of claim 2, wherein the battery unit further comprises a charging port.
4. The intelligent voice touch system of a bone conduction bluetooth headset of claim 1, wherein the processor module performs an alignment operation on digital voice signals transmitted to the first bone conduction unit and the second bone conduction unit according to a distance difference between the first bone conduction unit and the second bone conduction unit.
5. The intelligent voice touch system of the bone conduction bluetooth headset according to claim 1, wherein the connecting bracket, the shell of the first bone conduction unit, the shell of the control unit, the shell of the battery unit, the shell of the second bone conduction unit, the shell of the first ear hook and the shell of the second ear hook are made of plastic, silica gel or rubber.
6. An intelligent voice touch method of a bone conduction Bluetooth headset is characterized in that the intelligent voice touch system based on the bone conduction Bluetooth headset of any one of claims 1-5 is realized, and specifically comprises the following steps:
S1, presetting control instructions corresponding to touch gestures and voice signals of a bone conduction Bluetooth headset in different working modes;
s2, the processor module judges the current working mode of the bone conduction Bluetooth headset;
S3, judging whether a touch gesture or a voice signal exists or not;
s4, recognizing touch gestures or voice signals, and executing corresponding control instructions.
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| CN202111552059.8A CN114205708B (en) | 2021-12-17 | Intelligent voice touch system and method of bone conduction Bluetooth headset |
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| CN202111552059.8A CN114205708B (en) | 2021-12-17 | Intelligent voice touch system and method of bone conduction Bluetooth headset |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205160743U (en) * | 2015-11-12 | 2016-04-13 | 范伏清 | Multi -functional osteoacusis bluetooth headset |
| CN107039045A (en) * | 2016-02-03 | 2017-08-11 | 谷歌公司 | Global optimization least square post filtering for speech enhan-cement |
| CN207518797U (en) * | 2017-10-27 | 2018-06-19 | 北京金锐德路科技有限公司 | Neck wears the voice control optimization device of formula interactive voice earphone |
| CN110198501A (en) * | 2018-02-27 | 2019-09-03 | 奥维通信股份有限公司 | A kind of multifunctional headphone system |
| WO2020019355A1 (en) * | 2018-07-27 | 2020-01-30 | 华为技术有限公司 | Touch control method for wearable device, and wearable device and system |
| CN214481205U (en) * | 2021-04-21 | 2021-10-22 | 深圳市鑫正宇科技有限公司 | Can pull out ear-hanging bluetooth headset that inserts TPYC port and charge |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205160743U (en) * | 2015-11-12 | 2016-04-13 | 范伏清 | Multi -functional osteoacusis bluetooth headset |
| CN107039045A (en) * | 2016-02-03 | 2017-08-11 | 谷歌公司 | Global optimization least square post filtering for speech enhan-cement |
| CN207518797U (en) * | 2017-10-27 | 2018-06-19 | 北京金锐德路科技有限公司 | Neck wears the voice control optimization device of formula interactive voice earphone |
| CN110198501A (en) * | 2018-02-27 | 2019-09-03 | 奥维通信股份有限公司 | A kind of multifunctional headphone system |
| WO2020019355A1 (en) * | 2018-07-27 | 2020-01-30 | 华为技术有限公司 | Touch control method for wearable device, and wearable device and system |
| CN214481205U (en) * | 2021-04-21 | 2021-10-22 | 深圳市鑫正宇科技有限公司 | Can pull out ear-hanging bluetooth headset that inserts TPYC port and charge |
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