CN112954524A - Noise reduction method, system, vehicle-mounted terminal and computer storage medium - Google Patents
Noise reduction method, system, vehicle-mounted terminal and computer storage medium Download PDFInfo
- Publication number
- CN112954524A CN112954524A CN202110128391.5A CN202110128391A CN112954524A CN 112954524 A CN112954524 A CN 112954524A CN 202110128391 A CN202110128391 A CN 202110128391A CN 112954524 A CN112954524 A CN 112954524A
- Authority
- CN
- China
- Prior art keywords
- sound source
- earphone
- sound
- noise reduction
- vehicle
- 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.)
- Pending
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 19
- 230000007613 environmental effect Effects 0.000 claims abstract description 9
- 230000003321 amplification Effects 0.000 claims description 12
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (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
The invention discloses a noise reduction method, which is applied to a vehicle-mounted terminal and comprises the following steps: acquiring a first sound source for sending to an earphone to play and acquiring a second sound source which is played with the first sound source in a loudspeaker; carrying out noise reduction processing on the first sound source according to the second sound source to obtain a third sound source; and sending the third sound source to the earphone for playing. In this way, the sound interference of the loudspeaker sound to the earphone can be effectively solved without collecting the environmental noise, the noise reduction effect is good, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of noise reduction processing, and in particular, to a noise reduction method, a noise reduction system, a vehicle-mounted terminal, and a computer storage medium.
Background
When the earphone is worn in the automobile for listening, the sound of the loudspeaker in the automobile can cause interference to the sound played by the earphone. However, in the prior art, after noise is collected by a microphone, noise reduction processing is performed according to the collected noise, which has a certain hysteresis and cannot well remove the noise played by a speaker.
Disclosure of Invention
The invention aims to provide a noise reduction method, a noise reduction system, a vehicle-mounted terminal and a computer storage medium, which can effectively solve the problem of sound interference of loudspeaker sound on an earphone without collecting environmental noise, have good noise reduction effect and improve user experience.
In order to solve the above technical problem, the present application provides a noise reduction method applied to a vehicle-mounted terminal, including:
the method comprises the steps of obtaining a first sound source used for being sent to an earphone to be played and obtaining a second sound source played with the first sound source in a loudspeaker;
carrying out noise reduction processing on the first sound source according to the second sound source to obtain a third sound source;
and sending the third sound source to the earphone for playing.
Wherein, the denoising processing is performed on the first sound source according to the second sound source to obtain a third sound source, including:
estimating noise sound waves generated by the second sound source at the earphone;
and after the power of the first sound source is amplified, superposing the reverse noise sound waves to obtain a third sound source.
Wherein, the estimating of the noise sound wave generated by the second sound source at the earphone comprises:
and predicting the noise sound wave generated by the second sound source in the earphone according to the environmental parameters in the vehicle.
Wherein the in-vehicle environment parameter includes at least one of a reflection coefficient, a refraction coefficient, and an attenuation value of sound.
Wherein said power amplifying said first audio source comprises:
determining an amplification factor according to the sound field environment in the vehicle and the position of the earphone;
and carrying out power amplification on the first sound source according to the amplification factor.
The present application further provides a noise reduction system, comprising: a vehicle-mounted terminal, an earphone and a loudspeaker;
the vehicle-mounted terminal is used for acquiring a first sound source played by the earphone and a second sound source played simultaneously with the first sound source in the loudspeaker, carrying out noise reduction processing on the first sound source according to the second sound source to obtain a third sound source, and sending the third sound source to the earphone for playing;
the earphone is used for playing the third sound source;
the loudspeaker is used for playing the second sound source.
In the noise reduction system, the earphone is connected with the vehicle-mounted terminal through Bluetooth.
In the noise reduction system, the in-vehicle terminal is further configured to:
estimating noise sound waves generated by the second sound source at the earphone;
and after the power of the first sound source is amplified, superposing the reverse noise sound waves to obtain a third sound source.
The present application further provides a vehicle-mounted terminal, including:
at least one processor;
at least one memory coupled to the at least one processor and storing instructions for execution by the at least one processor, the instructions when executed by the at least one processor cause the apparatus to perform a noise reduction method as described above.
The present application further provides a computer storage medium having computer program instructions stored thereon; which when executed by a processor implement the noise reduction method as described above.
The noise reduction method is applied to the vehicle-mounted terminal and comprises the following steps: acquiring a first sound source for sending to an earphone to play and acquiring a second sound source which is played with the first sound source in a loudspeaker; carrying out noise reduction processing on the first sound source according to the second sound source to obtain a third sound source; and sending the third sound source to the earphone for playing. In this way, the sound interference of the loudspeaker sound to the earphone can be effectively solved without collecting the environmental noise, the noise reduction effect is good, and the user experience is improved.
The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical means of the present application more clearly understood, the present application may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present application more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic flow diagram illustrating a noise reduction method according to an embodiment of the present invention;
FIG. 2 is a scene interaction diagram illustrating a noise reduction method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a noise reduction system according to an embodiment of the present invention;
FIG. 4 is one of schematic structural diagrams of a vehicle-mounted terminal according to an embodiment of the present invention;
fig. 5 is a second schematic configuration diagram of the in-vehicle terminal shown in fig. 4.
Detailed Description
The following description of the embodiments of the present application is provided for illustrative purposes, and other advantages and capabilities of the present application will become apparent to those skilled in the art from the present disclosure.
In the following description, reference is made to the accompanying drawings that describe several embodiments of the application. It is to be understood that other embodiments may be utilized and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Although the terms first, second, etc. may be used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.
Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.
Fig. 1 is a schematic flow chart of a noise reduction method according to an embodiment of the present invention. As shown in fig. 1, a noise reduction method provided in an embodiment of the present invention is applied to a vehicle-mounted terminal, and includes:
step 201: acquiring a first sound source for sending to an earphone to play and acquiring a second sound source which is played with the first sound source in a loudspeaker;
step 202: carrying out noise reduction processing on the first sound source according to the second sound source to obtain a third sound source;
step 203: and sending the third sound source to the earphone for playing.
The active noise reduction function is to generate reverse sound waves equal to external noise through a noise reduction system to neutralize the noise, so that the noise reduction effect is realized. In this embodiment, in order to actively reduce noise of a noise source, so as to solve the problem that the sound played by a speaker may cause interference when an earphone is used in a vehicle to listen, a first sound source played by the earphone and a second sound source played by the speaker are first obtained, and both the first sound source and the second sound source are internal audio data played in a vehicle-mounted terminal. When the first sound source and the second sound source are played simultaneously, the second sound source played by the loudspeaker can generate noise interference on the first sound source played by the earphone, and the effect of listening by a user through the earphone is influenced. And then, carrying out noise reduction processing on the first sound source according to the second sound source to obtain a third sound source. Then send the third sound source to the earphone and play, avoid directly sending first sound source to the earphone to eliminate the noise interference of second sound source, owing to need not to adopt the microphone to gather ambient noise, do not have the hysteresis problem of making an uproar, the noise reduction effect is better.
In this embodiment, when the first sound source is denoised according to the second sound source to obtain the third sound source, the noise sound wave generated by the second sound source in the earphone is estimated, and the noise sound wave generated from the second sound source in the earphone is calculated through the acoustic transfer equation. The noise sound wave can be calculated through an acoustic transfer equation by determining the position of the vehicle-mounted terminal as the second sound source, then determining the distance between the vehicle-mounted terminal and the earphone according to the connection state of the vehicle-mounted terminal and the earphone, and combining the environment parameters in the vehicle, such as the reflection coefficient, the refraction coefficient, the attenuation value of the sound and the like. The environmental parameters in the vehicle can be pre-recorded into the vehicle-mounted terminal or acquired through the internet of vehicles. The calculated noise sound wave is then processed in reverse, i.e., the phase of the noise sound wave is inverted by 180 degrees. And then, carrying out power amplification on the first sound source and superposing the reverse noise sound wave to obtain a third sound source. The amplification factor for amplifying the power of the first sound source is determined according to the sound field environment in the vehicle and the position of the earphone. Therefore, when the earphone receives the third sound source, the reverse noise sound wave calculated according to the second sound source is contained, and the reverse noise sound wave can be neutralized with the noise sound wave received by the earphone and generated by playing the second sound source through the loudspeaker, so that the noise reduction of the first sound source is realized.
Fig. 2 is a scene interaction diagram illustrating a noise reduction method according to an embodiment of the present invention. As shown in fig. 2, Audio B is a first Audio source, Audio a is a second Audio source, and Audio C is a third Audio source, and the operational formula for obtaining the third Audio source by performing noise reduction processing on the first Audio source according to the second Audio source is as follows:
Audio C＝α*Audio B-f(Audio A)
where α is the amplification factor and f (Audio a) is the noise sound wave produced by Audio a at the earpiece.
Audio A and Audio B can calculate Audio C by combining the environmental parameters in the vehicle and the acoustic transfer equation through the formula. Delivering Audio C to the ear of a user listening to the headphones may be used to neutralize Audio a received by the user that is delivered to the ear through the speaker, resulting in a directional noise reduction effect. The embodiment ensures that only the sound of Audio B is really heard by the user by predicting the information of the sound source Audio a with noise reduced and then generating the backward sound wave by the Audio a in the environment where the listener using the earphones is located through the environment variable information to counteract the sound interference of the Audio a.
The noise reduction method provided by the embodiment of the invention is applied to the vehicle-mounted terminal, and comprises the following steps: acquiring a first sound source for sending to an earphone to play and acquiring a second sound source which is played with the first sound source in a loudspeaker; carrying out noise reduction processing on the first sound source according to the second sound source to obtain a third sound source; and sending the third sound source to the earphone for playing. In this way, the sound interference of the loudspeaker sound to the earphone can be effectively solved without collecting the environmental noise, the noise reduction effect is good, and the user experience is improved.
Fig. 3 is a schematic structural diagram of a noise reduction system according to an embodiment of the present invention. As shown in fig. 3, an embodiment of the present invention further provides a noise reduction system 401, where the noise reduction system 401 includes: a vehicle-mounted terminal 402, an earphone 403, and a speaker 404;
the vehicle-mounted terminal 402 is configured to acquire a first sound source sent to the earphone 403 for playing, acquire a second sound source played simultaneously with the first sound source in the speaker 404, perform noise reduction processing on the first sound source according to the second sound source to obtain a third sound source, and send the third sound source to the earphone 403 for playing;
an earphone 403 for playing a third sound source;
and a speaker 404 for playing the second audio source.
In one embodiment, the headset 403 is connected to the in-vehicle terminal 402 via bluetooth.
In one embodiment, the in-vehicle terminal 402 is further configured to:
noise sound waves generated by the second sound source at the earphone 403 are estimated;
and after the power of the first sound source is amplified, superposing the reverse noise sound waves to obtain a third sound source.
In one embodiment, the in-vehicle terminal 402 is further configured to:
the noise sound wave generated by the second sound source at the earphone 403 is estimated according to the in-vehicle environment parameters, which include at least one of the reflection coefficient, the refraction coefficient and the attenuation value of the sound.
In one embodiment, the in-vehicle terminal 402 is further configured to:
determining an amplification factor according to the sound field environment in the vehicle and the position of the earphone 403;
and performing power amplification on the first sound source according to the amplification factor.
The specific process implemented by this embodiment is described in detail in the related description of the embodiment of the noise reduction method, and is not described herein again.
The noise reduction system of the embodiment of the invention comprises: a vehicle-mounted terminal, an earphone and a loudspeaker; the vehicle-mounted terminal is used for acquiring a first sound source sent to the earphone for playing, acquiring a second sound source played with the first sound source in the loudspeaker, performing noise reduction processing on the first sound source according to the second sound source to obtain a third sound source, and sending the third sound source to the earphone for playing; the earphone is used for playing the third sound source; and the loudspeaker is used for playing the second sound source. The noise reduction system provided by the embodiment of the invention can effectively solve the problem of sound interference of the sound of the loudspeaker on the earphone without collecting environmental noise, has a good noise reduction effect, and improves user experience.
As shown in fig. 4, the present application also provides an in-vehicle terminal 10 including: the processor 102 and the memory 106 storing the computer program implement the noise reduction method as described above when the processor 102 runs the computer program.
The processor 102 of this embodiment executes the specific process of the above steps, which is described in detail in relation to the embodiment of the noise reduction method, and is not described herein again.
Referring to fig. 5, in practical implementation, the in-vehicle terminal 10 includes a memory 102, a storage controller 104, one or more processors 106 (only one of which is shown), a peripheral interface 108, a radio frequency module 150, a positioning module 112, a camera module 114, an audio module 116, a screen 118, and a key module 160. These components communicate with each other via one or more communication buses/signal lines 122.
It is to be understood that the configuration shown in fig. 5 is merely an illustration, and the in-vehicle terminal 10 may include more or less components than those shown in fig. 5, or have a different configuration than that shown in fig. 5. The components shown in fig. 5 may be implemented in hardware, software, or a combination thereof.
The memory 102 may be used to store software programs and modules, such as program instructions/modules corresponding to the noise reduction method in the embodiment of the present application, and the processor 106 executes various functional applications and data processing by executing the software programs and modules stored in the storage controller 104, so as to implement the above-mentioned noise reduction method.
The memory 102 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 102 may further include memory located remotely from the processor 106, which may be connected to the in-vehicle terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof. Access to the memory 102 by the processor 106, and possibly other components, may be under the control of the memory controller 104.
In some embodiments, the peripheral interface 108, the processor 106, and the memory controller 104 may be implemented in a single chip. In other examples, they may be implemented separately from the individual chips.
The rf module 150 is used for receiving and transmitting electromagnetic waves, and implementing interconversion between the electromagnetic waves and electrical signals, so as to communicate with a communication network or other devices. Rf module 150 may include various existing circuit elements for performing these functions, such as an antenna, a radio frequency transceiver, a digital signal processor, an encryption/decryption chip, a Subscriber Identity Module (SIM) card, memory, and so forth. The rf module 150 may communicate with various networks such as the internet, an intranet, a wireless network, or with other devices via a wireless network. The positioning module 112 is used for acquiring the current position of the in-vehicle terminal 10. Examples of the positioning module 112 include, but are not limited to, a global positioning satellite system (GPS), a wireless local area network-based positioning technology, or a mobile communication network-based positioning technology.
The camera module 114 is used to take a picture or video. The pictures or videos taken may be stored in the memory 102 and transmitted through the radio frequency module 150.
The screen 118 provides an output interface between the in-vehicle terminal 10 and the user. In particular, screen 118 displays video output to the user, the content of which may include text, graphics, video, and any combination thereof. Some of the output results are for some of the user interface objects. It is understood that the screen 118 may also include a touch screen. The touch screen provides both an output and an input interface between the in-vehicle terminal 10 and the user. In addition to displaying video output to users, touch screens also receive user input, such as user clicks, swipes, and other gesture operations, so that user interface objects respond to these user input. The technique of detecting user input may be based on resistive, capacitive, or any other possible touch detection technique. Specific examples of touch screen display units include, but are not limited to, liquid crystal displays or light emitting polymer displays.
The key module 160 also provides an interface for a user to input to the in-vehicle terminal 10, and the user can cause the in-vehicle terminal 10 to perform different functions by pressing different keys.
The present application further provides a computer storage medium having computer program instructions stored thereon; the computer program instructions, when executed by a processor, implement the noise reduction method as described in the above embodiments.
In practical implementation, the computer storage medium is applied to the in-vehicle terminal shown in fig. 4 or fig. 5, and the noise reduction method is implemented as described above. The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.
Claims (10)
1. A noise reduction method is applied to a vehicle-mounted terminal and is characterized by comprising the following steps:
the method comprises the steps of obtaining a first sound source used for being sent to an earphone to be played and obtaining a second sound source played with the first sound source in a loudspeaker;
carrying out noise reduction processing on the first sound source according to the second sound source to obtain a third sound source;
and sending the third sound source to the earphone for playing.
2. The method according to claim 1, wherein the performing noise reduction processing on the first sound source according to the second sound source to obtain a third sound source comprises:
estimating noise sound waves generated by the second sound source at the earphone;
and after the power of the first sound source is amplified, superposing the reverse noise sound waves to obtain a third sound source.
3. The method of reducing noise according to claim 2, wherein the estimating of the noise sound wave generated by the second sound source at the earphone comprises:
and predicting the noise sound wave generated by the second sound source in the earphone according to the environmental parameters in the vehicle.
4. The noise reduction method according to claim 3, wherein the in-vehicle environment parameter includes at least one of a reflection coefficient, a refraction coefficient, and an attenuation value of sound.
5. The method of reducing noise according to claim 2, wherein the power amplifying the first audio source comprises:
determining an amplification factor according to the sound field environment in the vehicle and the position of the earphone;
and carrying out power amplification on the first sound source according to the amplification factor.
6. A noise reduction system, comprising: a vehicle-mounted terminal, an earphone and a loudspeaker;
the vehicle-mounted terminal is used for acquiring a first sound source played by the earphone and a second sound source played simultaneously with the first sound source in the loudspeaker, carrying out noise reduction processing on the first sound source according to the second sound source to obtain a third sound source, and sending the third sound source to the earphone for playing;
the earphone is used for playing the third sound source;
the loudspeaker is used for playing the second sound source.
7. The noise reduction system of claim 6, wherein the headset is connected to the in-vehicle terminal via Bluetooth.
8. The noise reduction system of claim 6, wherein the vehicle terminal is further configured to:
estimating noise sound waves generated by the second sound source at the earphone;
and after the power of the first sound source is amplified, superposing the reverse noise sound waves to obtain a third sound source.
9. A vehicle-mounted terminal characterized by comprising:
at least one processor;
at least one memory coupled to the at least one processor and storing instructions for execution by the at least one processor, the instructions when executed by the at least one processor causing the device to perform the noise reduction method of any of claims 1 to 5.
10. A computer storage medium having computer program instructions stored thereon; the computer program instructions, when executed by a processor, implement the noise reduction method of any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110128391.5A CN112954524A (en) | 2021-01-29 | 2021-01-29 | Noise reduction method, system, vehicle-mounted terminal and computer storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110128391.5A CN112954524A (en) | 2021-01-29 | 2021-01-29 | Noise reduction method, system, vehicle-mounted terminal and computer storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112954524A true CN112954524A (en) | 2021-06-11 |
Family
ID=76240030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110128391.5A Pending CN112954524A (en) | 2021-01-29 | 2021-01-29 | Noise reduction method, system, vehicle-mounted terminal and computer storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112954524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113469834A (en) * | 2021-07-27 | 2021-10-01 | 江苏宝联气体有限公司 | Outdoor design skid-mounted on-site oxygen generation method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007166478A (en) * | 2005-12-16 | 2007-06-28 | Matsushita Electric Ind Co Ltd | Hands-free system, and vehicle-mounted device and mobile phone used therefor |
| JP2012023416A (en) * | 2010-07-12 | 2012-02-02 | Panasonic Corp | Noise reduction system |
| DE102015015130A1 (en) * | 2015-11-21 | 2017-05-24 | Audi Ag | Method for operating a motor vehicle and motor vehicle |
| US20200296500A1 (en) * | 2015-12-17 | 2020-09-17 | Huawei Technologies Co., Ltd. | Ambient Sound Processing Method And Device |
-
2021
- 2021-01-29 CN CN202110128391.5A patent/CN112954524A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007166478A (en) * | 2005-12-16 | 2007-06-28 | Matsushita Electric Ind Co Ltd | Hands-free system, and vehicle-mounted device and mobile phone used therefor |
| JP2012023416A (en) * | 2010-07-12 | 2012-02-02 | Panasonic Corp | Noise reduction system |
| DE102015015130A1 (en) * | 2015-11-21 | 2017-05-24 | Audi Ag | Method for operating a motor vehicle and motor vehicle |
| US20200296500A1 (en) * | 2015-12-17 | 2020-09-17 | Huawei Technologies Co., Ltd. | Ambient Sound Processing Method And Device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113469834A (en) * | 2021-07-27 | 2021-10-01 | 江苏宝联气体有限公司 | Outdoor design skid-mounted on-site oxygen generation method and system |
| CN113469834B (en) * | 2021-07-27 | 2023-11-03 | 江苏宝联气体有限公司 | Outdoor design skid-mounted on-site oxygen generation method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108430003B (en) | Sound effect compensation method and device, readable storage medium and terminal | |
| US10924877B2 (en) | Audio signal processing method, terminal and storage medium thereof | |
| CN111050250B (en) | Noise reduction method, device, equipment and storage medium | |
| US10051368B2 (en) | Mobile apparatus and control method thereof | |
| CN108391205B (en) | Left and right channel switching method and device, readable storage medium and terminal | |
| CN109918039B (en) | Volume adjusting method and mobile terminal | |
| CN108319445B (en) | Audio playing method and mobile terminal | |
| CN107785027B (en) | Audio processing method and electronic equipment | |
| CN113038337B (en) | Audio playing method, wireless earphone and computer readable storage medium | |
| CN109524016B (en) | Audio processing method and device, electronic equipment and storage medium | |
| CN114727212A (en) | Audio processing method and electronic equipment | |
| CN109873894B (en) | Volume adjusting method and mobile terminal | |
| US20120064940A1 (en) | Mobile communication device and communication method | |
| CN108540659B (en) | Method, terminal and computer readable storage medium for reducing TDD noise influence | |
| CN112954524A (en) | Noise reduction method, system, vehicle-mounted terminal and computer storage medium | |
| CN108319440B (en) | Audio output method and mobile terminal | |
| CN108769364A (en) | Call control method, device, mobile terminal and computer-readable medium | |
| CN106657621B (en) | Self-adaptive adjusting device and method for sound signal | |
| CN111787149A (en) | Noise reduction processing method, system and computer storage medium | |
| CN113115175B (en) | 3D sound effect processing method and related product | |
| CN113766385B (en) | Earphone noise reduction method and device | |
| CN109144461A (en) | Sounding control method, device, electronic device and computer-readable medium | |
| CN110139181B (en) | Audio processing method and device, earphone, terminal equipment and storage medium | |
| WO2017223200A1 (en) | Device for detecting, monitoring, and cancelling ghost echoes in an audio signal | |
| CN109144462A (en) | Sounding control method, device, electronic device and computer-readable medium |
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 |