CN112967729A - Vehicle-mounted local audio fuzzy processing method and device - Google Patents
Vehicle-mounted local audio fuzzy processing method and deviceDownload PDFInfo
- Publication number
- CN112967729A CN112967729ACN202110205182.6ACN202110205182ACN112967729ACN 112967729 ACN112967729 ACN 112967729ACN 202110205182 ACN202110205182 ACN 202110205182ACN 112967729 ACN112967729 ACN 112967729A
- Authority
- CN
- China
- Prior art keywords
- vehicle
- audio
- sound wave
- fuzzy
- wave data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/003—Changing voice quality, e.g. pitch or formants
- G10L21/007—Changing voice quality, e.g. pitch or formants characterised by the process used
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/879—Head-rests with additional features not related to head-rest positioning, e.g. heating or cooling devices or loudspeakers
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Description
Technical Field
The invention relates to the technical field of artificial intelligence, in particular to a vehicle-mounted local audio fuzzy processing method and system, electronic equipment and a storage medium.
Background
The effects of existing sophisticated audio processing techniques, such as but not limited to echo cancellation, single-microphone noise reduction, microphone array noise reduction, and other front-end speech enhancement techniques, are greatly enhanced. Meanwhile, with the development and popularization of the internet of vehicles, the interactive audio of the user in the vehicle can be acquired by the external device through various ways and is subjected to corresponding application processing, such as semantic understanding, business query, data backup, matching retrieval, remote service request and the like.
Under the condition that the requirement on the privacy of the automobile is higher and higher nowadays, the main means for realizing the privacy protection of the back talk is to set a privacy partition and adopt hardware made of special materials, but at present, the means has higher requirement on the space in the automobile, and meanwhile, the manufacturing cost is high, and the popularization rate of various automobile types cannot be higher. In addition, the arrangement of the partition plates can cause that the front-back row communication is not instant. Even by active noise reduction means, the privacy effect cannot be fully ensured.
Disclosure of Invention
The invention aims to provide a vehicle-mounted local audio fuzzy processing method, a system, electronic equipment and a storage medium, which can achieve better privacy effect by carrying out fuzzy security processing on rear-row voice audio by using a same-frequency jitter superposition method.
In a first aspect, an embodiment of the present invention provides a vehicle-mounted local audio fuzzy processing method, where the vehicle-mounted local audio fuzzy processing method includes the following steps:
acquiring sound wave data of a rear row area in the vehicle;
carrying out fuzzy processing on the collected sound wave data by a method of same-frequency phase jitter superposition;
and transmitting the processed sound wave data to the front row area in the vehicle for playing.
Optionally, the blurring the collected acoustic data by a method of superimposing same-frequency phase jitters includes:
optionally, the blurring the collected acoustic data by a method of superimposing same-frequency phase jitters includes:
decomposing the acquired audio signal into a plurality of limited sine waves representing main gain expression, wherein a specific superposition algorithm comprises the steps of;
f(x)＝A1 sin(ω1x+θ1)+A2 sin(ω2x+θ2)+...An sin(ωnx+θn)
wherein A is amplitude, omega is frequency, theta is phase, the numbers are correspondingly arranged according to the value of A, and the larger the value of A is, the more the arrangement is forward;
the phase of the decomposed sine wave is subjected to interference processing of random forward and backward dithering.
Optionally, the interference processing for randomly dithering the phase of the decomposed sine wave comprises;
arranging according to the amplitude of the sine wave obtained by decomposition, namely the size of the value A, to obtain the corresponding sequence from 1 to n, thereby obtaining the sine wave with the larger value A as the obvious fuzzy processing sound wave;
carrying out disorder dithering on the sound waves according to the phase of theta;
and further synthesizing and superposing the waves obtained after the vibration to obtain the fuzzy sound wave.
In a second aspect, an embodiment of the present invention provides an in-vehicle local audio blurring processing system, where the audio blurring processing system includes:
the fuzzy processing module is used for carrying out fuzzy security processing on the back row audio frequency by a same frequency phase jitter superposition method;
the back row sound wave data acquisition module is used for transmitting the collected sound wave data to the fuzzy processing module for processing;
and the front row audio playing module is used for transmitting the processed sound wave data to a front row area in the vehicle for playing.
Optionally, the back row acoustic data collection module comprises a sound recognizer.
Optionally, the sound recognizer is arranged behind the headrest of the front seat.
Optionally, the front row audio playing module comprises a speaker.
Optionally, the speaker is disposed in front of the headrest of the front seat.
In a third aspect, the present invention provides an electronic device, comprising:
a processor; a memory for storing processor-executable instructions;
wherein the processor implements the above method by executing the executable instructions.
In a fourth aspect, the present invention provides a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the above-described method.
Advantageous effects
The invention discloses a vehicle-mounted local audio fuzzy security processing method, a device, electronic equipment and a storage medium, and relates to the technical field of vehicle networking, wherein the vehicle-mounted local audio fuzzy processing method is used for acquiring sound wave data of a rear row area in a vehicle; carrying out fuzzy processing on the collected sound wave data by a method of same-frequency phase jitter superposition; the processed sound wave data are transmitted to the front row area in the vehicle for playing, the implementation cost of rear row voice secrecy is reduced without setting the physical conditions of hardware, and the method is more universal; the demand space of the back-row conversation is not influenced, and the instantaneity of the front-row communication and the back-row communication can be ensured.
Drawings
Fig. 1 is a flowchart of a vehicle-mounted local audio fuzzy processing method according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for blurring collected acoustic data by a method of superimposing same-frequency phase jitter according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a same-frequency dithered acoustic wave according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a superimposed acoustic wave according to an embodiment of the present invention;
fig. 5 is a schematic position diagram of a rear row acoustic data collection module and a front row audio playing module according to an embodiment of the present invention;
FIG. 6 is a block diagram of a vehicle local audio fuzzy processing system according to an embodiment of the present invention;
fig. 7 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a vehicle-mounted audio fuzzy processing method, a vehicle-mounted audio fuzzy processing system, electronic equipment and a storage medium, wherein the vehicle-mounted audio fuzzy processing method, the vehicle-mounted audio fuzzy processing system, the electronic equipment and the storage medium are used for carrying out fuzzy security processing on rear-row voice audio by using a same-frequency jitter superposition method, so that a better privacy effect is achieved. The invention will be further described with reference to the following description and specific examples, taken in conjunction with the accompanying drawings:
fig. 1 shows a flowchart of a vehicle-mounted local audio blurring processing method according to an embodiment of the present invention, and as shown in fig. 1, the vehicle-mounted local audio blurring processing method includes the following steps:
s20, acquiring sound wave data of a rear row area in the vehicle;
s40, carrying out fuzzy processing on the collected sound wave data by a same-frequency phase jitter superposition method;
and S60, transmitting the processed sound wave data to the front row area in the vehicle for playing.
The embodiment provides a vehicle-mounted local audio fuzzy security processing method, a device, electronic equipment and a storage medium, and relates to the technical field of vehicle networking, wherein the vehicle-mounted local audio fuzzy processing method is used for acquiring sound wave data of a rear row area in a vehicle; carrying out fuzzy processing on the collected sound wave data by a method of same-frequency phase jitter superposition; the processed sound wave data are transmitted to the front row area in the vehicle for playing, the implementation cost of rear row voice secrecy is reduced without setting the physical conditions of hardware, and the method is more universal; the requirement space of the back row conversation is not influenced, physical isolation is not required to be set, and an open space is reserved between the front row seat and the back row seat, so that the instantaneity of the front row communication and the back row communication is ensured.
Specifically, as shown in fig. 2 to 4, since multiple rows of collected acoustic wave data can be superimposed by a plurality of sine waves, which satisfy the conditions of the same frequency, the same vibration direction, and constant phase difference, on the basis, the interference processing of random jitter before and after the phase of the acoustic wave can be performed, the disorder fuzzy processing can be performed on the back row audio, and the fuzzy processing can be performed on the collected acoustic wave data by the method of superimposing the same-frequency phase jitter, which includes:
s401, decomposing the acquired audio signal into a plurality of limited sine waves representing main gain expression;
and S402, carrying out interference processing of random jitter before and after the phase of the sine wave.
Specifically, the blurring processing of the collected sound wave data by a method of superimposing same-frequency phase jitter includes:
decomposing the acquired audio signal into a plurality of limited sine waves representing main gain expression, wherein a specific superposition algorithm comprises the steps of;
f(x)＝A1 sin(ω1x+θ1)+A2 sin(ω2x+θ2)+...An sin(ωnx+θn)
wherein A is amplitude, omega is frequency, theta is phase, the numbers are correspondingly arranged according to the value of A, and the larger the value of A is, the more the arrangement is forward;
the phase of the decomposed sine wave is subjected to interference processing of random forward and backward dithering.
Further, the interference processing for randomly dithering the phases of the decomposed sine waves comprises the following steps;
as shown in fig. 3, the amplitudes of the decomposed sine waves, i.e., the magnitudes of the values a, are arranged to obtain the order of 1 to n, so that the sine waves with larger values a are the significantly blurred sound waves; wherein W1The wave is a segment of a decomposed sine wave.
As shown in fig. 3, the sound waves are dithered in an order according to the phase of θ; wherein W2And W3Is a sine wave after disorder and jitter.
As shown in fig. 4, the several bands obtained by the dithering are further synthesized and superimposed to obtain a blurred sound wave.
Based on the same inventive concept, the embodiment of the present application further provides a vehicle-mounted local audio fuzzy security processing system, which can be used to implement the method described in the above embodiments, as described in the following embodiments. The vehicle-mounted local audio fuzzy secrecy processing system is similar to a vehicle-mounted local audio fuzzy secrecy processing method in the problem solving principle, so that the implementation of the vehicle-mounted local audio fuzzy secrecy processing system can refer to the implementation of the vehicle-mounted local audio fuzzy secrecy processing method, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
As shown in fig. 5, an embodiment of the present invention provides an in-vehicle local audio blurring processing system, where the audio blurring processing system includes:
the fuzzy processing module 20 is used for carrying out fuzzy security processing on the back row audio frequency by a same frequency phase jitter superposition method;
the back row sound wave data acquisition module 40 is used for transmitting the collected sound wave data to the fuzzy processing module for processing;
and a front audio playing module 60, configured to transmit the processed sound wave data to a front area in the vehicle for playing.
Specifically, as shown in fig. 6, the back row acoustic data collection module includes asound recognizer 602.
Thesound recognizer 602 is arranged behind the headrest of the front seat; the front row audio playing module comprises aloudspeaker 601; thespeaker 601 is disposed in front of the headrest of the front seat.
An electronic device is also provided in the embodiments of the present application, and fig. 7 shows a schematic structural diagram of an electronic device to which the embodiments of the present application can be applied, and as shown in fig. 7, the computer electronic device includes a Central Processing Unit (CPU)701 that can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM)702 or a program loaded from astorage section 708 into a Random Access Memory (RAM) 703. In theRAM 703, various programs and data necessary for system operation are also stored. TheCPU 701, the ROM702, and theRAM 703 are connected to each other via abus 704. An input/output (I/O)interface 705 is also connected tobus 704.
The following components are connected to the I/O interface 705; anoutput section 707 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; astorage section 708 including a hard disk and the like; and acommunication section 709 including a network interface card such as a LAN card, a modem, or the like. Thecommunication section 709 performs communication processing via a network such as the internet. Adrive 710 is also connected to the I/O interface 705 as needed. Aremovable medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on thedrive 710 as necessary, so that a computer program read out therefrom is mounted into thestorage section 708 as necessary.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The application also provides a computer readable storage medium, which can be the computer readable storage medium contained in the vehicle-mounted local audio fuzzy security processing system in the above embodiment; or it may be a computer-readable storage medium that exists separately and is not built into the electronic device. The computer readable storage medium stores one or more programs for use by one or more processors in performing an in-vehicle local audio privacy-obscuring processing method described in the present application.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A vehicle-mounted local audio fuzzy processing method is characterized by comprising the following steps:
acquiring sound wave data of a rear row area in the vehicle;
carrying out fuzzy processing on the collected sound wave data by a method of same-frequency phase jitter superposition;
and transmitting the processed sound wave data to the front row area in the vehicle for playing.
2. The audio blurring processing method according to claim 1, wherein blurring processing the collected sound wave data by a method of superimposing same-frequency phase jitters includes:
decomposing the acquired audio signal into a plurality of limited sine waves representing main gain expression, wherein a specific superposition algorithm comprises the steps of;
f(x)＝A1sin(ω1x+θ1)+A2sin(ω2x+θ2)+...Ansin(ωnx+θn)
wherein A is amplitude, omega is frequency, theta is phase, the numbers are correspondingly arranged according to the value of A, and the larger the value of A is, the more the arrangement is forward;
the phase of the decomposed sine wave is subjected to interference processing of random forward and backward dithering.
3. The audio blurring processing method according to claim 2, wherein the interference processing to randomly dither the phase of the decomposed sine wave back and forth includes;
arranging according to the amplitude of the sine wave obtained by decomposition, namely the size of the value A, to obtain the corresponding sequence from 1 to n, thereby obtaining the sine wave with the larger value A as the obvious fuzzy processing sound wave;
carrying out disorder dithering on the sound waves according to the phase of theta;
and further synthesizing and superposing the waves obtained after the vibration to obtain the fuzzy sound wave.
4. An in-vehicle local audio blurring processing system, comprising:
the fuzzy processing module is used for carrying out fuzzy security processing on the back row audio frequency by a same frequency phase jitter superposition method;
the back row sound wave data acquisition module is used for transmitting the collected sound wave data to the fuzzy processing module for processing;
and the front row audio playing module is used for transmitting the processed sound wave data to a front row area in the vehicle for playing.
5. The audio blurring processing system according to claim 4, wherein the back row acoustic data collection module comprises a recognizer.
6. The audio blurring processing system according to claim 5, wherein the recognizer is disposed behind a headrest of a front seat.
7. The audio blurring processing system according to claim 4, wherein the front row audio playing module comprises a speaker.
8. The audio blurring processing system according to claim 7, wherein the speaker is disposed in front of a headrest of a front seat.
9. An electronic device, comprising:
a processor, a memory for storing processor-executable instructions;
wherein the processor implements the method of any one of claims 1-3 by executing the executable instructions.
10. A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, carry out the steps of the method according to any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110205182.6ACN112967729B (en) | 2021-02-24 | 2021-02-24 | Vehicle-mounted local audio fuzzy processing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110205182.6ACN112967729B (en) | 2021-02-24 | 2021-02-24 | Vehicle-mounted local audio fuzzy processing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112967729Atrue CN112967729A (en) | 2021-06-15 |
| CN112967729B CN112967729B (en) | 2024-07-02 |
Family
ID=76285870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110205182.6AActiveCN112967729B (en) | 2021-02-24 | 2021-02-24 | Vehicle-mounted local audio fuzzy processing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112967729B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5128968A (en)* | 1988-07-27 | 1992-07-07 | Nec Corporation | Apparatus for cancelling carrier phase jitters |
| US20050065778A1 (en)* | 2003-09-24 | 2005-03-24 | Mastrianni Steven J. | Secure speech |
| CA3026283A1 (en)* | 2001-06-14 | 2005-09-15 | Dolby Laboratories Licensing Corporation | Reconstructing audio signals with multiple decorrelation techniques |
| CN102099851A (en)* | 2008-07-18 | 2011-06-15 | 皇家飞利浦电子股份有限公司 | Method and system for preventing overhearing of private conversations in public places |
| CN102543066A (en)* | 2011-11-18 | 2012-07-04 | 中国科学院声学研究所 | Target voice privacy protection method and system |
| WO2013032025A1 (en)* | 2011-08-29 | 2013-03-07 | 日本電気株式会社 | Signal processing device, signal processing method, and computer program |
| US20130185061A1 (en)* | 2012-10-04 | 2013-07-18 | Medical Privacy Solutions, Llc | Method and apparatus for masking speech in a private environment |
| CN104658548A (en)* | 2013-11-21 | 2015-05-27 | 哈曼国际工业有限公司 | sing external sounds to alert vehicle occupants of external events and mask in-car conversations |
| GB201704363D0 (en)* | 2017-03-20 | 2017-05-03 | Jaguar Land Rover Ltd | Apparatus and method for privacy enhancement |
| CN107210032A (en)* | 2015-01-20 | 2017-09-26 | 弗劳恩霍夫应用研究促进协会 | The voice reproduction equipment of reproducing speech is sheltered in voice region is sheltered |
| CN109862472A (en)* | 2019-02-21 | 2019-06-07 | 中科上声（苏州）电子有限公司 | A kind of car privacy call method and system |
| JP2019120828A (en)* | 2018-01-09 | 2019-07-22 | クラリオン株式会社 | Privacy protection system |
| CN209218303U (en)* | 2018-12-25 | 2019-08-06 | 深圳Tcl新技术有限公司 | Speech ciphering equipment and its sound circuit |
| CN111161753A (en)* | 2020-01-03 | 2020-05-15 | 上海交通大学 | Safe voice interaction method and system based on intelligent terminal |
| US20200258535A1 (en)* | 2019-02-08 | 2020-08-13 | Samsung Electronics Co., Ltd. | System and method for continuous privacy-preserved audio collection |
| CN111965611A (en)* | 2020-07-07 | 2020-11-20 | 西安电子科技大学 | Method for constructing phase jitter DDMA waveform |
- 2021
- 2021-02-24CNCN202110205182.6Apatent/CN112967729B/enactiveActive
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5128968A (en)* | 1988-07-27 | 1992-07-07 | Nec Corporation | Apparatus for cancelling carrier phase jitters |
| CA3026283A1 (en)* | 2001-06-14 | 2005-09-15 | Dolby Laboratories Licensing Corporation | Reconstructing audio signals with multiple decorrelation techniques |
| US20050065778A1 (en)* | 2003-09-24 | 2005-03-24 | Mastrianni Steven J. | Secure speech |
| CN102099851A (en)* | 2008-07-18 | 2011-06-15 | 皇家飞利浦电子股份有限公司 | Method and system for preventing overhearing of private conversations in public places |
| WO2013032025A1 (en)* | 2011-08-29 | 2013-03-07 | 日本電気株式会社 | Signal processing device, signal processing method, and computer program |
| CN102543066A (en)* | 2011-11-18 | 2012-07-04 | 中国科学院声学研究所 | Target voice privacy protection method and system |
| US20130185061A1 (en)* | 2012-10-04 | 2013-07-18 | Medical Privacy Solutions, Llc | Method and apparatus for masking speech in a private environment |
| CN104658548A (en)* | 2013-11-21 | 2015-05-27 | 哈曼国际工业有限公司 | sing external sounds to alert vehicle occupants of external events and mask in-car conversations |
| CN107210032A (en)* | 2015-01-20 | 2017-09-26 | 弗劳恩霍夫应用研究促进协会 | The voice reproduction equipment of reproducing speech is sheltered in voice region is sheltered |
| GB201704363D0 (en)* | 2017-03-20 | 2017-05-03 | Jaguar Land Rover Ltd | Apparatus and method for privacy enhancement |
| JP2019120828A (en)* | 2018-01-09 | 2019-07-22 | クラリオン株式会社 | Privacy protection system |
| CN209218303U (en)* | 2018-12-25 | 2019-08-06 | 深圳Tcl新技术有限公司 | Speech ciphering equipment and its sound circuit |
| US20200258535A1 (en)* | 2019-02-08 | 2020-08-13 | Samsung Electronics Co., Ltd. | System and method for continuous privacy-preserved audio collection |
| CN109862472A (en)* | 2019-02-21 | 2019-06-07 | 中科上声（苏州）电子有限公司 | A kind of car privacy call method and system |
| CN111161753A (en)* | 2020-01-03 | 2020-05-15 | 上海交通大学 | Safe voice interaction method and system based on intelligent terminal |
| CN111965611A (en)* | 2020-07-07 | 2020-11-20 | 西安电子科技大学 | Method for constructing phase jitter DDMA waveform |
Non-Patent Citations (2)
| Title |
|---|
| 邹联丰等: "《电脑录音基础教程》", 31 October 2011, 西南交通大学出版社, pages: 151 - 153* |
| 陈向阳: "车载收音机立体声噪声产生和消除的研究", 《惠州学院学报（自然科学版）》, vol. 35, no. 3, 31 March 2015 (2015-03-31)* |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112967729B (en) | 2024-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111951819B (en) | Echo cancellation method, device and storage medium | |
| CN111341336B (en) | Echo cancellation method, device, terminal equipment and medium | |
| US10580430B2 (en) | Noise reduction using machine learning | |
| US10038795B2 (en) | Robust acoustic echo cancellation for loosely paired devices based on semi-blind multichannel demixing | |
| US9521484B2 (en) | Multi-beam sound system | |
| EP2245861B1 (en) | Enhanced blind source separation algorithm for highly correlated mixtures | |
| EP1879293B1 (en) | Partitioned fast convolution in the time and frequency domain | |
| US10477031B2 (en) | System and method for suppression of non-linear acoustic echoes | |
| US7680265B2 (en) | Echo canceler circuit and method | |
| US20130142349A1 (en) | Method, device and system for eliminating noises with multi-microphone array | |
| EP4050861B1 (en) | Audio signal post-processing method and apparatus, storage medium, and electronic device | |
| CN112309416B (en) | Vehicle-mounted voice echo eliminating method, system, vehicle and storage medium | |
| CN106210368A (en) | The method and apparatus eliminating multiple channel acousto echo | |
| CN113689878B (en) | Echo cancellation method, echo cancellation device and computer readable storage medium | |
| EP2627065B1 (en) | Multi-receiver end echo cancellation method and system | |
| CN112967729A (en) | Vehicle-mounted local audio fuzzy processing method and device | |
| US8194850B2 (en) | Method and apparatus for voice communication | |
| JP7642672B2 (en) | Audio noise removal method and device | |
| DE102018213367B4 (en) | Method and telephony device for noise suppression of a system-generated audio signal during a telephone call and a vehicle with the telephony device | |
| CN117789747A (en) | Vehicle-mounted multitone area interaction method and device, electronic equipment and storage medium | |
| EP1261961A1 (en) | Methods and systems for noise reduction for spatially displaced signal sources | |
| JP2001148644A (en) | Echo canceller | |
| US10361895B1 (en) | Systems and methods for hybrid multi-layer signal decomposition | |
| KR101936242B1 (en) | Apparatus and method for noise removal, and recording medium thereof | |
| EP0786920A1 (en) | Transmission system of correlated signals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |