CN105323670A - Terminal and directional audio signal sending method - Google Patents
Terminal and directional audio signal sending method Download PDFInfo
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- CN105323670A CN105323670A CN201410330513.9A CN201410330513A CN105323670A CN 105323670 A CN105323670 A CN 105323670A CN 201410330513 A CN201410330513 A CN 201410330513A CN 105323670 A CN105323670 A CN 105323670A
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Abstract
The invention discloses a directional audio signal sending method which comprises the following steps: obtaining a user image, and calculating the position of a user with respect to an audio signal source according to the user image information; obtaining an audio signal, and modulating the audio signal into two rows of ultrasonic signals; and outputting the two rows of ultrasonic signals according to the ultrasonic signal power and output angle, which are obtained by carrying out calculation based on the position of the user, wherein the two rows of ultrasonic signals are transmitted to the direction of the user, and are self-demodulated in the transmission process, so that the user is allowed to hear the clear voice. The invention also discloses a terminal. According to the terminal and method, the obtained audio signal is modulated into the ultrasonic signals according to the position of the user with respect to the audio signal source, the ultrasonic signal power and output angle are obtained by carrying out calculating based on the angel and distance, and the ultrasonic signals are transmitted according to the ultrasonic signal power and output angle, so that the user can hear the audio signal sent by the terminal without wearing an earphone, while people beyond the position of the user cannot hear the signal, and safety of transmission of the audio signal is ensured.
Description
Technical field
The present invention relates to Audiotechnica field, particularly relate to the method for terminal and audio signal directive sending.
Background technology
At present in the occasions such as most of meetings, generally all adopt unified sound amplifier, all participants all hear same sound.
But in conference content need to be keep secret occasions such as some strategy, international conferences, each participant needs the conference content possibility difference received, and adopts above-mentioned unified sound amplifier obviously improper.In order to address this problem, current way is that each participant is equipped with an ear speaker device, receives corresponding audio signal by ear speaker device.
But listen to corresponding voice messaging by wired earphone equipment and can bring mobile inconvenience to participant, user's experience is not good.
Summary of the invention
Main purpose of the present invention is to solve and be not equipped with in earphone situation in meeting, and each participant only listens to corresponding audio signal, ensures the technical problem of the safety of audio signal transmission.
For achieving the above object, the method for a kind of audio signal directive sending provided by the invention, is characterized in that, said method comprising the steps of:
Obtain user images information, calculate the orientation of user relative to audio signal source according to user images information;
Obtaining audio signal, is two row ultrasonic signals by modulates audio signals;
Calculate the power of ultrasonic signal according to the orientation of user and export angle, export described two row ultrasonic signals with described power and output angle, described two row ultrasonic signals to user side to transmission, and from demodulation in transmitting procedure, make user hear clear sound.
Preferably, the frequency of described two row ultrasonic signals is respectively f1, f2, because of non-linear interaction in described two row ultrasonic signal communication processes, produce from demodulation after propagating into user present position and be in the audio signal nf1 of people's ear not in audible frequency range, mf2, nf1+mf2, and be in the nf1-mf2 audio signal in people's ear audible frequency range.
Preferably, described is that ultrasonic signal specifically comprises by modulates audio signals:
Described audio signal is converted to digital audio and video signals by simulated audio signal;
Described digital audio and video signals is modulated to digital ultrasound signal;
Described digital ultrasound signal is converted to ultrasonic signal, comprises analog signal or digital signal.
Preferably, described digital audio and video signals is modulated to digital ultrasound signal to be specially:
Gain is carried out to digital audio and video signals x (t) and amplifies m;
Digital audio and video signals after gain being amplified is w by carrier angular frequencies
cmodulator modulate, obtain digital ultrasound signal y (t);
Described digital ultrasound signal y (t) algorithm is as follows: y (t)=[m*x (t)+1] * cos (w
c* t).
Preferably, described user images is user's head image.
In addition, for achieving the above object, the present invention also provides a kind of terminal, comprising:
Image collection module, for obtaining user images information;
Computing module, for calculating the orientation of user relative to audio signal source according to user images information;
And power and the output angle of ultrasonic signal is calculated according to the orientation of user;
Audio frequency acquisition module, for obtaining audio signal;
Modulation module, for being two row ultrasonic signals by described modulates audio signals;
Output module, for exporting described two row ultrasonic signals with described power and output angle, described two row ultrasonic signals to user side to transmission, and from demodulation in transmitting procedure, make user hear clear sound.
Preferably, the frequency of described two row ultrasonic signals is respectively f1, f2, because of non-linear interaction in described two row ultrasonic signal communication processes, produce from demodulation after propagating into user present position and be in the audio signal nf1 of people's ear not in audible frequency range, mf2, nf1+mf2, and be in the nf1-mf2 audio signal in people's ear audible frequency range.
Preferably, described modulation module comprises:
AD conversion unit, for being converted to digital audio and video signals by described audio signal by simulated audio signal;
Ultrasonic modulation unit, for being modulated to digital ultrasound signal by described digital audio and video signals;
D/A conversion unit, for described digital ultrasound signal is converted to ultrasonic signal, comprises analog signal or digital signal.
Preferably, described ultrasonic modulation unit, amplifies m specifically for carrying out gain to digital audio and video signals x (t); And the digital audio and video signals after gain being amplified is w by carrier angular frequencies
cmodulator modulate, obtain digital ultrasound signal y (t); Described digital ultrasound signal y (t) algorithm is as follows: y (t)=[m*x (t)+1] * cos (w
c* t).
Preferably, described user images is user's head image.
The method of terminal provided by the present invention and audio signal directive sending, the orientation of user relative to audio signal source is calculated according to the image of user, be two row ultrasonic signals by the modulates audio signals of acquisition, calculate the power of ultrasonic signal according to the orientation of user and export angle, with described power and the mode exporting the described two row ultrasonic signals of angle output, due to ultrasonic signal transmit in atmosphere from demodulation characteristics, make when not wear headphones, user can the audio signal that sends of uppick terminal, and people beyond user position cannot uppick, ensure that the fail safe of audio signal transmission.
Accompanying drawing explanation
Fig. 1 is the flow chart of audio signal directive sending method one embodiment of the present invention;
Fig. 2 is the refinement flow chart of ultrasonic signal step by modulates audio signals in Fig. 1;
Fig. 3 is Fig. 1 sound intermediate frequency signal double-sideband modulation algorithm principle figure;
Fig. 4 is the high-level schematic functional block diagram of terminal one embodiment of the present invention;
Fig. 5 is the refinement high-level schematic functional block diagram of modulation module in Fig. 4;
Fig. 6 is the refinement high-level schematic functional block diagram of output module in Fig. 4.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of method of audio signal directive sending.It is the flow chart of method one embodiment of audio signal directive sending of the present invention see Fig. 1, Fig. 1.In one embodiment, the method for described audio signal directive sending comprises:
Step S10, acquisition user images, calculate the orientation of user relative to audio signal source according to user images information.
User images described in this step is user's head image, namely describedly calculates user according to user images information and is specially relative to the orientation of audio signal source: calculate the user head orientation relative to audio signal source according to user's head image.Wherein the present embodiment is conventional algorithm of the prior art according to image information computed image relative to the algorithm that the orientation of audio signal source adopts, and does not do to launch explanation at this.
Modulates audio signals is two row ultrasonic signals by step S20, acquisition audio signal.
Audio signal described in this step can be the audio signal that other-end equipment is come by wired or wireless Internet Transmission.
Be the refinement flow chart of ultrasonic signal step by modulates audio signals see Fig. 2, Fig. 2.Described is that ultrasonic signal specifically comprises by modulates audio signals:
Step S21, described audio signal is converted to digital audio and video signals by simulated audio signal.
Described simulated audio signal is specifically converted to digital audio and video signals with the sampling rate of 16KHZ by this step.
Step S22, described digital audio and video signals is modulated to digital ultrasound signal.
Be audio signal double-sideband modulation algorithm principle figure see Fig. 3, Fig. 3.This step is specially: carry out gain to digital audio and video signals x (t) and amplify m; Then the digital audio and video signals after gain being amplified is w by carrier angular frequencies
cmodulator modulate, obtain digital ultrasound signal y (t); Described digital ultrasound signal y (t) algorithm is as follows: y (t)=[m*x (t)+1] * cos (w
c* t).Preferably described digital audio and video signals modulation is about the digital ultrasound signal of 40KHZ in the present embodiment.
Step S23, described digital ultrasound signal is converted to ultrasonic signal, comprises analog signal or digital signal.
Described digital ultrasound signal is specifically converted to ultrasonic signal with the sampling rate of more than 80KHZ by this step, comprises analog signal or digital signal.
Step S30, the power calculating ultrasonic signal according to the orientation of user and output angle, described two row ultrasonic signals are exported with described power and output angle, described two row ultrasonic signals to user side to transmission, and from demodulation in transmitting procedure, make user hear clear sound.
Because ultrasonic signal has following characteristic: primary frequency is that the two row ultrasonic signals of f1, f2 are after ultrasonic transducer is launched, produce non-linear interaction in communication process aloft, the sound wave generated after propagating into specific range comprises: nf1, mf2, nf1+mf2 and frequently signal and nf1-mf2 difference frequency signal (n, m are natural number).When wherein before audio signal exports, rationally the frequency (namely selecting f1, f2) of audio signal modulation becomes ultrasonic signal, after can making ultrasonic signal output, the difference frequency signal nf1-mf2 be only transferred in setting range is in people's ear audible frequency range.The present embodiment utilizes the above-mentioned principle of ultrasonic signal, by modulates audio signals be reasonable frequency f1, f2 (as frequency be 40KHZ and more than) two row ultrasonic signals, because of non-linear interaction in described two row ultrasonic signal communication processes, produce from demodulation after propagating into user present position and be in the audio signal nf1 of people's ear not in audible frequency range, mf2, nf1+mf2, and be in the nf1-mf2 audio signal in people's ear audible frequency range.Namely user can listen clear sound to be frequency is that nf1-mf2 obtains audio signal.
Calculate the power of ultrasonic signal in this step and to export the algorithm that adopts of angle be the conventional algorithm of prior art, do not do to launch explanation at this.
Export ultrasonic signal with described power and output angle in this step S30 to be specially: according to the power of the power adjustment ultrasonic signal calculated, with the ultrasonic signal after described output angle power output adjustment.Namely according to the power of the power adjustment simulation ultrasonic signal calculated, with the simulation ultrasonic signal after described output angle power output adjustment.
The present invention is according to the These characteristics of ultrasonic signal, it is the ultrasonic signal of reasonable frequency (frequency be 40KHZ and more than) by the modulates audio signals of acquisition, power and the angle of ultrasonic signal output will be calculated according to the orientation of user's comparative audio information source, and by power adjustment unit, power adjustment is carried out to ultrasonic signal, then the mode that exports with described output angle of ultrasonic signal after power being adjusted by ultrasonic transducer, make user can hear sound clearly in the setting range of current present position, and related sound be can't hear in other positions.Namely make in not wear headphones situation, only have user can the audio signal that sends of uppick terminal, and the people beyond user present position cannot listen to the audio signal that terminal sends, ensure that the fail safe of audio signal transmission, noise jamming can not be produced to other people simultaneously.
The present invention further provides kind of a terminal, is the high-level schematic functional block diagram of terminal one embodiment of the present invention see Fig. 4, Fig. 4.In one embodiment, described terminal 100 comprises: image collection module 110, computing module 120, audio frequency acquisition module 130, modulation module 140 and output module 150.Wherein, described image collection module 110, for obtaining user images information.Described computing module 120, for calculating the orientation of user relative to audio signal source according to user images information, and calculates the power of ultrasonic signal according to the orientation of user and exports angle.Described audio frequency acquisition module 130, for obtaining audio signal.Described modulation module 140, for being two row ultrasonic signals by described modulates audio signals.Described output module 150, for exporting described two row ultrasonic signals with described power and output angle, described two row ultrasonic signals to user side to transmission, and from demodulation in transmitting procedure, make user listen clear sound.
Because ultrasonic signal has following characteristic: primary frequency is that the two row ultrasonic signals of f1, f2 are after ultrasonic transducer is launched, produce non-linear interaction in communication process aloft, the sound wave generated after propagating into specific range comprises: nf1, mf2, nf1+mf2 and frequently signal and nf1-mf2 difference frequency signal (n, m are natural number).When wherein before audio signal exports, rationally the frequency (namely selecting f1, f2) of audio signal modulation becomes ultrasonic signal, after can making ultrasonic signal output, the difference frequency signal nf1-mf2 be only transferred in setting range is in people's ear audible frequency range.The present embodiment utilizes the above-mentioned principle of ultrasonic signal, by modulates audio signals be reasonable frequency f1, f2 (as frequency be 40KHZ and more than) two row ultrasonic signals, because of non-linear interaction in described two row ultrasonic signal communication processes, produce from demodulation after propagating into user present position and be in the audio signal nf1 of people's ear not in audible frequency range, mf2, nf1+mf2, and be in the nf1-mf2 audio signal in people's ear audible frequency range.Namely user can listen clear sound to be frequency is that nf1-mf2 obtains audio signal.
User images described in the present embodiment is user's head image, and namely described computing module 120 is specifically for calculating the orientation of user's head relative to audio signal source according to user's head image.Wherein the present embodiment is according to the orientation of image information computed image relative to audio signal source, and calculates the power of ultrasonic signal accordingly and export the conventional algorithm that the algorithm that adopts of angle is prior art, does not do to launch explanation at this.
See the refinement high-level schematic functional block diagram that Fig. 5, Fig. 5 are modulation module in Fig. 4.Described modulation module 140 comprises: AD conversion unit 141, ultrasonic adjustment unit 142, D/A conversion unit 143.Wherein, described AD conversion unit 141, for being converted to digital audio and video signals by described audio signal by simulated audio signal.Described ultrasonic modulation unit 142, for being modulated to digital ultrasound signal by described digital audio and video signals.Described D/A conversion unit 143, for described digital ultrasound signal is converted to ultrasonic signal, comprises analog signal or digital signal.
In the present embodiment, described simulated audio signal is specifically converted to digital audio and video signals with the sampling rate of 16KHZ by described AD conversion unit 141.Described digital ultrasound signal is specifically converted to ultrasonic signal with the sampling rate of more than 80KHZ by described D/A converter module 143, comprises analog signal or digital signal.
Be audio signal double-sideband modulation algorithm principle figure see Fig. 3, Fig. 3.Described ultrasonic modulation unit 142, amplifies m specifically for carrying out gain to digital audio and video signals x (t); Then the digital audio and video signals after gain being amplified is w by carrier angular frequencies
cmodulator modulate, obtain digital ultrasound signal y (t); Described digital ultrasound signal y (t) algorithm is as follows: y (t)=[m*x (t)+1] * cos (w
c* t).Preferably described digital audio and video signals is modulated to the digital ultrasound signal of about 40KHZ in the present embodiment.
See the refinement high-level schematic functional block diagram that Fig. 6, Fig. 6 are output module in Fig. 4.Described output module 150 comprises: power adjustment unit 151 and ultrasonic output unit 152.Wherein, described power adjustment unit 151, for the power according to the power adjustment ultrasonic signal calculated, namely according to the power of the power adjustment simulation ultrasonic signal calculated.Described ultrasonic output unit 152, for the described ultrasonic signal after described output angle power output adjustment, namely with the simulation ultrasonic signal after described output angle power output adjustment.
The present invention is according to the These characteristics of ultrasonic signal, it is the ultrasonic signal of reasonable frequency (frequency be 40KHZ and more than) by the modulates audio signals of acquisition, power and the angle of ultrasonic signal output will be calculated according to the orientation of user's comparative audio information source, and by power adjustment unit, power adjustment is carried out to ultrasonic signal, then the mode that exports with described output angle of ultrasonic signal after power being adjusted by ultrasonic transducer, make user can hear sound clearly in the setting range of current present position, and related sound be can't hear in other positions.Namely make in not wear headphones situation, only have user can the audio signal that sends of uppick terminal, and the people beyond user present position cannot listen to the audio signal that terminal sends, ensure that the fail safe of audio signal transmission, noise jamming can not be produced to other people simultaneously.
Audio signal described in the present embodiment can be the audio signal that other-end equipment is come by wired or wireless Internet Transmission.
Without the need to wearing on health when terminal provided by the present invention uses, more need not be worn on ear, only need place the ear image that can get user in position, relatively traditional ear speaker device, not existing to wear makes uncomfortable, affects healthy problem.
Based on above-mentioned multiple advantage, terminal provided by the present invention, except being applied to the Conference Room of the need to be keep secret such as strategy, the world, can being applied in daily life, study, work equally, having wide range of applications.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a method for audio signal directive sending, is characterized in that, said method comprising the steps of:
Obtain user images information, calculate the orientation of user relative to audio signal source according to user images information;
Obtaining audio signal, is two row ultrasonic signals by modulates audio signals;
Calculate the power of ultrasonic signal according to the orientation of user and export angle, export described two row ultrasonic signals with described power and output angle, described two row ultrasonic signals to user side to transmission, and from demodulation in transmitting procedure, make user hear clear sound.
2. the method for audio signal directive sending according to claim 1, it is characterized in that, the frequency of described two row ultrasonic signals is respectively f1, f2, because of non-linear interaction in described two row ultrasonic signal communication processes, produce from demodulation after propagating into user present position and be in the audio signal nf1 of people's ear not in audible frequency range, mf2, nf1+mf2, and be in the nf1-mf2 audio signal in people's ear audible frequency range.
3. the method for audio signal directive sending according to claim 1, is characterized in that, described is that ultrasonic signal specifically comprises by modulates audio signals:
Described audio signal is converted to digital audio and video signals by simulated audio signal;
Described digital audio and video signals is modulated to digital ultrasound signal;
Described digital ultrasound signal is converted to ultrasonic signal, comprises analog signal or digital signal.
4. the method for audio signal directive sending according to claim 3, is characterized in that, described digital audio and video signals is modulated to digital ultrasound signal and is specially:
Gain is carried out to digital audio and video signals x (t) and amplifies m;
Digital audio and video signals after gain being amplified is w by carrier angular frequencies
cmodulator modulate, obtain digital ultrasound signal y (t);
Described digital ultrasound signal y (t) algorithm is as follows: y (t)=[m*x (t)+1] * cos (w
c* t).
5. the method for the audio signal directive sending according to any one of Claims 1-4, is characterized in that, described user images is user's head image.
6. a terminal, is characterized in that, comprising:
Image collection module, for obtaining user images information;
Computing module, for calculating the orientation of user relative to audio signal source according to user images information;
And power and the output angle of ultrasonic signal is calculated according to the orientation of user;
Audio frequency acquisition module, for obtaining audio signal;
Modulation module, for being two row ultrasonic signals by described modulates audio signals;
Output module, for exporting described two row ultrasonic signals with described power and output angle, described two row ultrasonic signals to user side to transmission, and from demodulation in transmitting procedure, make user hear clear sound.
7. terminal according to claim 6, it is characterized in that, the frequency of described two row ultrasonic signals is respectively f1, f2, because of non-linear interaction in described two row ultrasonic signal communication processes, produce from demodulation after propagating into user present position and be in the audio signal nf1 of people's ear not in audible frequency range, mf2, nf1+mf2, and be in the nf1-mf2 audio signal in people's ear audible frequency range.
8. terminal according to claim 6, is characterized in that, described modulation module comprises:
AD conversion unit, for being converted to digital audio and video signals by described audio signal by simulated audio signal;
Ultrasonic modulation unit, for being modulated to digital ultrasound signal by described digital audio and video signals;
D/A conversion unit, for described digital ultrasound signal is converted to ultrasonic signal, comprises analog signal or digital signal.
9. terminal according to claim 8, is characterized in that,
Described ultrasonic modulation unit, amplifies m specifically for carrying out gain to digital audio and video signals x (t); And the digital audio and video signals after gain being amplified is w by carrier angular frequencies
cmodulator modulate, obtain digital ultrasound signal y (t); Described digital ultrasound signal y (t) algorithm is as follows: y (t)=[m*x (t)+1] * cos (w
c* t).
10. the terminal according to any one of claim 6-9, is characterized in that, described user images is user's head image.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106708041A (en) * | 2016-12-12 | 2017-05-24 | 西安Tcl软件开发有限公司 | Intelligent sound box and intelligent sound box directional movement method and device |
| CN106973160A (en) * | 2017-03-27 | 2017-07-21 | 广东小天才科技有限公司 | A kind of method for secret protection, device and equipment |
| CN107420848A (en) * | 2017-08-28 | 2017-12-01 | 深圳传音通讯有限公司 | The method that music lighting lamp and music lighting lamp orientation play music |
| CN107656718A (en) * | 2017-08-02 | 2018-02-02 | 宇龙计算机通信科技(深圳)有限公司 | A kind of audio signal direction propagation method, apparatus, terminal and storage medium |
| CN108124220A (en) * | 2017-12-25 | 2018-06-05 | 广州市尊浪电器有限公司 | A kind of outdoor use speaker |
| CN108159546A (en) * | 2017-12-28 | 2018-06-15 | 深圳市赛亿科技开发有限公司 | Method and system, monitoring device, audio frequency apparatus, the light units of sleep awakening |
| CN108370462A (en) * | 2016-09-16 | 2018-08-03 | 卡西欧计算机株式会社 | Osteoacusis wave generating means and method, osteoacusis wave generating means program and osteoacusis wave export machine |
| CN109065058A (en) * | 2018-09-30 | 2018-12-21 | 合肥鑫晟光电科技有限公司 | Voice communication method, apparatus and system |
| CN109217943A (en) * | 2018-07-19 | 2019-01-15 | 珠海格力电器股份有限公司 | Orient broadcasting method, device, household electrical appliance and computer readable storage medium |
| CN109284081A (en) * | 2018-09-20 | 2019-01-29 | 维沃移动通信有限公司 | A kind of output method of audio, device and audio frequency apparatus |
| CN112218218A (en) * | 2020-09-23 | 2021-01-12 | 广东开放大学（广东理工职业学院） | Warning device and method based on ultrasonic waves |
| CN112312273A (en) * | 2020-11-06 | 2021-02-02 | 维沃移动通信有限公司 | Sound playing method, sound receiving method and electronic equipment |
| CN112887871A (en) * | 2021-01-04 | 2021-06-01 | 深圳千岸科技股份有限公司 | Authority-based earphone voice playing method, earphone and storage medium |
| CN113050076A (en) * | 2021-03-25 | 2021-06-29 | 京东方科技集团股份有限公司 | Method, device and system for sending directional audio information and electronic equipment |
| WO2021239037A1 (en) * | 2020-05-29 | 2021-12-02 | 维沃移动通信有限公司 | Signal processing method and apparatus, and electronic device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1766609A1 (en) * | 2004-07-09 | 2007-03-28 | Seiko Epson Corporation | Projector and method of controlling ultrasonic speaker in projector |
| CN103338421A (en) * | 2013-06-17 | 2013-10-02 | 深圳市九洲电器有限公司 | Method and device for carrying out area sound transmission by adopting acoustic frequency array |
-
2014
- 2014-07-11 CN CN201410330513.9A patent/CN105323670A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1766609A1 (en) * | 2004-07-09 | 2007-03-28 | Seiko Epson Corporation | Projector and method of controlling ultrasonic speaker in projector |
| CN103338421A (en) * | 2013-06-17 | 2013-10-02 | 深圳市九洲电器有限公司 | Method and device for carrying out area sound transmission by adopting acoustic frequency array |
Cited By (20)
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| CN108370462A (en) * | 2016-09-16 | 2018-08-03 | 卡西欧计算机株式会社 | Osteoacusis wave generating means and method, osteoacusis wave generating means program and osteoacusis wave export machine |
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| CN106973160A (en) * | 2017-03-27 | 2017-07-21 | 广东小天才科技有限公司 | A kind of method for secret protection, device and equipment |
| US10694291B2 (en) | 2017-08-02 | 2020-06-23 | Yulong Computer Telecommunication Scientific (Shenzhen) Co., Ltd. (Cn) | Directional propagation method and apparatus for audio signal, a terminal device and a storage medium |
| CN107656718A (en) * | 2017-08-02 | 2018-02-02 | 宇龙计算机通信科技(深圳)有限公司 | A kind of audio signal direction propagation method, apparatus, terminal and storage medium |
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| CN109217943A (en) * | 2018-07-19 | 2019-01-15 | 珠海格力电器股份有限公司 | Orient broadcasting method, device, household electrical appliance and computer readable storage medium |
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| CN109284081B (en) * | 2018-09-20 | 2022-06-24 | 维沃移动通信有限公司 | Audio output method and device and audio equipment |
| CN109065058A (en) * | 2018-09-30 | 2018-12-21 | 合肥鑫晟光电科技有限公司 | Voice communication method, apparatus and system |
| US10873661B2 (en) | 2018-09-30 | 2020-12-22 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Voice communication method, voice communication apparatus, and voice communication system |
| CN109065058B (en) * | 2018-09-30 | 2024-03-15 | 合肥鑫晟光电科技有限公司 | Voice communication method, device and system |
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| CN112218218A (en) * | 2020-09-23 | 2021-01-12 | 广东开放大学（广东理工职业学院） | Warning device and method based on ultrasonic waves |
| CN112312273A (en) * | 2020-11-06 | 2021-02-02 | 维沃移动通信有限公司 | Sound playing method, sound receiving method and electronic equipment |
| CN112887871A (en) * | 2021-01-04 | 2021-06-01 | 深圳千岸科技股份有限公司 | Authority-based earphone voice playing method, earphone and storage medium |
| CN112887871B (en) * | 2021-01-04 | 2023-06-23 | 深圳千岸科技股份有限公司 | Headset voice playing method based on permission, headset and storage medium |
| CN113050076A (en) * | 2021-03-25 | 2021-06-29 | 京东方科技集团股份有限公司 | Method, device and system for sending directional audio information and electronic equipment |
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