CN114120956A

CN114120956A - Noise reduction method and device, vehicle and storage medium

Info

Publication number: CN114120956A
Application number: CN202111521626.3A
Authority: CN
Inventors: 王英茂
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-03-01

Abstract

The embodiment of the application discloses a noise reduction method and device, a vehicle and a storage medium. The method comprises the following steps: acquiring a noise signal transmitted by the electronic equipment, wherein the noise signal is acquired by the electronic equipment at a target position; generating an inverted signal based on the noise signal, the inverted signal being in an opposite phase to the noise signal; and performing noise reduction processing on the noise signal according to the inverted signal. The noise signal of the target position is obtained through the electronic equipment arranged at the target position, the noise signal is sent to the vehicle, then the vehicle can generate an opposite phase signal with the opposite phase of the noise signal, and therefore the noise reduction processing can be carried out on the noise signal of the target position on the basis of the opposite phase signal by the vehicle, and the noise reduction effect on the noise signal of the target position is guaranteed.

Description

Noise reduction method and device, vehicle and storage medium

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to a noise reduction method and device, a vehicle and a storage medium.

Background

With the development of scientific technology, more and more vehicles are equipped with active noise reduction functions. However, the microphone sampling point for active noise reduction of the vehicle is generally arranged on the roof or the side of the vehicle, and is at a certain distance from the driver, so that noise near the head of the driver cannot be reduced.

Disclosure of Invention

In view of the above, the present application proposes a noise reduction method, apparatus, vehicle, and storage medium to achieve an improvement of the above problem.

In a first aspect, an embodiment of the present application provides a noise reduction method, which is applied to a vehicle, where the vehicle is connected to an electronic device, and the method includes: acquiring a noise signal transmitted by the electronic equipment, wherein the noise signal is acquired by the electronic equipment at a target position; generating an inverted signal based on the noise signal, the inverted signal being in an opposite phase to the noise signal; and performing noise reduction processing on the noise signal according to the inverted signal.

In a second aspect, an embodiment of the present application provides a noise reduction apparatus, which is operated in a vehicle, where the vehicle is connected with an electronic device, and the apparatus includes: the first signal acquisition unit is used for acquiring a noise signal transmitted by the electronic equipment, wherein the noise signal is acquired by the electronic equipment at a target position; a second signal acquisition unit configured to generate an inverted signal based on the noise signal, the inverted signal having a phase opposite to that of the noise signal; and the noise reduction unit is used for carrying out noise reduction processing on the noise signal according to the inverted signal.

In a third aspect, an embodiment of the present application provides a vehicle, where the vehicle includes a vehicle-mounted machine system, where the vehicle-mounted machine system includes one or more processors and a memory; one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to perform the methods described above.

In a fourth aspect, the present application provides a computer-readable storage medium, in which a program code is stored, wherein the program code performs the above-mentioned method when running.

The embodiment of the application provides a noise reduction method and device, a vehicle and a storage medium. The method comprises the steps of firstly obtaining a noise signal transmitted by electronic equipment, wherein the noise signal is obtained by the electronic equipment at a target position, then generating an inverted signal based on the noise signal, wherein the phase of the inverted signal is opposite to that of the noise signal, and finally carrying out noise reduction processing on the noise signal according to the inverted signal. The noise signal of the target position is obtained through the electronic equipment arranged at the target position, the noise signal is sent to the vehicle, then the vehicle can generate an opposite phase signal with the opposite phase of the noise signal, and therefore the noise reduction processing can be carried out on the noise signal of the target position on the basis of the opposite phase signal by the vehicle, and the noise reduction effect on the noise signal of the target position is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view illustrating an application scenario of a noise reduction method according to an embodiment of the present application;

fig. 2 is a schematic view illustrating an application scenario of a noise reduction method according to an embodiment of the present application;

fig. 3 is a flow chart illustrating a noise reduction method according to an embodiment of the present application;

FIG. 4 is a flow chart illustrating a noise reduction method according to another embodiment of the present application;

FIG. 5 is a flow chart illustrating a noise reduction method according to yet another embodiment of the present application;

FIG. 6 is a flow chart illustrating a noise reduction method according to yet another embodiment of the present application;

fig. 7 is a block diagram illustrating a noise reduction apparatus according to an embodiment of the present application;

FIG. 8 is a block diagram of a vehicle for executing a noise reduction method according to an embodiment of the present application in real time;

fig. 9 illustrates a storage unit for storing or carrying program codes for implementing the noise reduction method according to the embodiment of the present application in real time.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Therefore, the inventors propose a noise reduction method, apparatus, vehicle, and storage medium in the present application. The method comprises the steps of firstly obtaining a noise signal transmitted by electronic equipment, wherein the noise signal is obtained by the electronic equipment at a target position, then generating an inverted signal based on the noise signal, wherein the phase of the inverted signal is opposite to that of the noise signal, and finally carrying out noise reduction processing on the noise signal according to the inverted signal. The noise signal of the target position is obtained through the electronic equipment arranged at the target position, the noise signal is sent to the vehicle, then the vehicle can generate an opposite phase signal with the opposite phase of the noise signal, and therefore the noise reduction processing can be carried out on the noise signal of the target position on the basis of the opposite phase signal by the vehicle, and the noise reduction effect on the noise signal of the target position is guaranteed.

The following is introduced with respect to an application environment of the noise reduction method provided by the embodiment of the present invention:

referring to fig. 1, the noise reduction method provided in the embodiment of the present invention may be applied to a noise reduction system 100, where the noise reduction system 100 may include a vehicle 110 and an electronic device 120. Where vehicle 110 and electronic device 120 may establish a connection over network 130.

Among other things, the vehicle 110 may include an in-vehicle system 112. Alternatively, the in-vehicle system 112 may be a device that has active noise reduction functionality and supports network connectivity or communicative connectivity with other electronic devices. Vehicle 110 and electronic device 120 may establish a connection via network 130, it being understood that in-vehicle system 112 and electronic device 120 may establish a connection via network 130. By one approach, the connection between the in-vehicle system 112 and the electronic device 120 may be a wired connection; alternatively, the connection between the in-vehicle system 112 and the electronic device 120 may be a wireless connection.

In this embodiment, after the in-vehicle system 112 establishes a connection with the electronic device 120, the in-vehicle system 112 may send data, such as vehicle speed information and location information, to the electronic device 120. The in-vehicle system 112 may also process the received data, such as processing and displaying the received multimedia data sent by the electronic device 120. In addition, the in-vehicle system 112 may include a built-in software application, such as a map-based application, a music-based application, a video-playing-based application, a radio-based application, a web browser application, a search-based application, and the like, to provide navigation, entertainment, and the like. Optionally, the in-vehicle system 112 may include an active noise reduction module, so that noise reduction processing may be performed on the received noise signal sent by the electronic device 120, and an inverse signal with a phase opposite to that of the noise signal sent by the electronic device 120 is generated, so that the in-vehicle system 112 may control the vehicle 110 to play the inverse signal.

The electronic device 120 may be various devices that can collect sound or noise, and may include, but is not limited to, a headset (bluetooth headset, wired headset, etc.), a mobile phone, a tablet computer, a laptop computer, a video player, an e-book reader, a smart watch, and other smart wearable devices. It should be understood that the number of electronic devices in fig. 1 is merely illustrative and that any number of electronic devices may be present as desired.

In the present embodiment, the network 130 is a medium to provide a communication link between the electronic device 120 and the in-vehicle machine system 112. The network 130 may include various connection types, such as bluetooth, Wireless Fidelity (Wifi), High Definition Multimedia Interface (HDMI), Universal Serial BUS (USB), and various Wireless or wired connections, so as to implement functions of communication connection, data transmission, audio and video synchronization, and the like between the electronic device 120 and the in-vehicle system 112.

Optionally, in the embodiment of the present application, the noise reduction method provided may be performed by the vehicle 110. In this manner performed by vehicle 110, all steps in the noise reduction method provided by the embodiment of the present application may be performed by vehicle 110. For example, as shown in fig. 1, a noise signal transmitted by the electronic device may be acquired by the onboard system 112 of the vehicle 100, and then an inverted signal is generated based on the noise signal, and the noise signal is subjected to noise reduction processing according to the inverted signal.

Furthermore, as shown in fig. 2, the vehicle-mounted system 112 of the vehicle 110 may also be connected to a server 200. Therefore, the noise reduction method provided by the embodiment of the present application can also be executed by the server (cloud) 200. Correspondingly, in this manner performed by the server 200, the in-vehicle system 112 may acquire the noise signal transmitted by the electronic device 110 and synchronously send the noise signal to the server 200, and then the server 200 generates an inverse signal based on the noise signal in real time and sends the inverse signal to the in-vehicle system 112, so that the in-vehicle system 112 may perform noise reduction processing on the noise signal according to the inverse signal.

In addition, the electronic device 110 and the in-vehicle system 112 can cooperatively execute the method. In this manner executed by the electronic device 110 and the in-vehicle system 112 cooperatively, part of the steps in the noise reduction method provided by the embodiment of the present application are executed by the electronic device 110, and the other part of the steps are executed by the in-vehicle system 112.

For example, as shown in fig. 1, the electronic device 120 may perform a noise reduction method including: acquiring a noise signal, and then executing, by the in-vehicle system 112, acquiring the noise signal transmitted by the electronic device 112, where the noise signal is acquired by the electronic device at a target position; generating an inverted signal based on the noise signal, the inverted signal being in an opposite phase to the noise signal; and performing noise reduction processing on the noise signal according to the inverted signal.

It should be noted that, in this manner executed by the electronic device 120 and the in-vehicle machine system 112 cooperatively, the steps executed by the electronic device 120 and the in-vehicle machine system 112 are not limited to the manner described in the above example, and in practical applications, the steps executed by the electronic device 120 and the in-vehicle machine system 112 may be dynamically adjusted according to actual situations.

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 3, a noise reduction method provided in an embodiment of the present application is applied to a vehicle or a server shown in fig. 1 or fig. 2, and the method includes:

step S110: and acquiring a noise signal transmitted by the electronic equipment, wherein the noise signal is acquired by the electronic equipment at a target position.

More and more vehicles are equipped with active noise reduction modules. Therefore, the noise in the vehicle can be reduced through the active noise reduction module of the vehicle. When the noise reduction processing is performed on the noise in the vehicle through the active noise reduction module of the vehicle, the noise in the vehicle needs to be acquired first.

In the embodiment of the present application, the in-vehicle noise can be acquired by the microphone provided in the vehicle. The microphone is used for acquiring the noise in the vehicle, which is subjected to noise reduction processing. However, since the in-vehicle noise is generally wind noise and tire noise, the sampling point of the microphone disposed in the vehicle is generally disposed on the vehicle itself, for example, on the roof or the side of the vehicle, and is at a certain distance from the driver, and the noise reduction processing cannot be performed on the in-vehicle noise at the target position.

Therefore, the electronic device in the embodiment of the application can be used for performing noise reduction processing on the noise in the vehicle at the target position.

In the embodiment of the application, the target position may be a position where the electronic device is set in advance to collect noise in the vehicle, for example, when the driver wears the electronic device, the target position may be near the ear of the driver. The noise signal may be a signal of an in-vehicle noise at the target position.

The electronic equipment can be provided with a microphone for collecting noise in the vehicle, so that the noise in the vehicle at the target position can be collected through the microphone arranged in the electronic equipment. As one way, when the in-vehicle noise at the target position is collected through a built-in microphone in the electronic device, the electronic device may be first set at the target position, and then after it is detected that the vehicle and the electronic device establish a wireless connection, the electronic device may be started to be controlled to collect the in-vehicle noise at the target position through the built-in microphone at a preset sampling rate. Alternatively, the preset sampling rate is a preset frequency at which the microphone built in the electronic device samples the analog signal in unit time.

In the embodiment of the application, since the noise in the vehicle includes wind noise and tire noise, which are both steady-state noise, the preset sampling rate can be set to be smaller.

After the noise signal at the target position is collected through a microphone arranged in the electronic device, the collected noise signal at the target position can be sent to the vehicle, and therefore the vehicle can obtain the noise signal at the target position.

As a manner, before the noise signal at the target position is collected by the microphone built in the electronic device, it may be detected whether the car-in-vehicle system of the vehicle is playing music or audio, and if it is detected that the car-in-vehicle system of the vehicle is not playing music or audio, the noise signal at the target position is collected by the microphone built in the electronic device; if the vehicle-mounted device system of the vehicle is detected to play music or audio, a microphone arranged in the vehicle is used for collecting a noise signal.

Step S120: generating an inverted signal based on the noise signal, the inverted signal being in an opposite phase to the noise signal.

In the embodiment of the present application, an active noise reduction module in a vehicle is generally disposed in a vehicle-mounted device system of the vehicle, so that noise reduction processing can be performed on a noise signal at a target position through the vehicle-mounted device system of the vehicle.

After the in-vehicle system acquires the noise signal transmitted by the electronic device, an active noise reduction module arranged in the in-vehicle system can generate an inverted signal with a phase opposite to that of the noise signal. The active noise reduction module arranged in the car machine system can acquire the amplitude and the phase of the noise signal before generating an inverse signal with the phase opposite to that of the noise signal, so that the inverse signal with the phase opposite to that of the noise signal and the amplitude within a preset range can be generated according to the amplitude and the phase of the noise signal. In the embodiment of the present application, the amplitude of the inverted signal is within a predetermined range, which means that the amplitude of the inverted signal may be lower than or higher than the amplitude of the noise signal by a certain value.

Step S130: and performing noise reduction processing on the noise signal according to the inverted signal.

In the embodiment of the application, after the active noise reduction module in the vehicle-mounted device system generates the phase-reversed signal opposite to the noise signal, the vehicle can play the phase-reversed signal and offset the noise signal through the phase-reversed signal, so that the purpose of reducing noise is achieved.

According to the noise reduction method, firstly, a noise signal transmitted by electronic equipment is obtained, the noise signal is obtained by the electronic equipment at a target position, then, an inverted signal is generated based on the noise signal, the phase of the inverted signal is opposite to that of the noise signal, and finally, noise reduction processing is carried out on the noise signal according to the inverted signal. The noise signal of the target position is obtained through the electronic equipment arranged at the target position, the noise signal is sent to the vehicle, then the vehicle can generate an opposite phase signal with the opposite phase of the noise signal, and therefore the noise reduction processing can be carried out on the noise signal of the target position on the basis of the opposite phase signal by the vehicle, and the noise reduction effect on the noise signal of the target position is guaranteed.

Referring to fig. 4, a noise reduction method provided in an embodiment of the present application is applied to a vehicle or a server shown in fig. 1 or fig. 2, where the method includes:

step S210: and acquiring whether the Bluetooth headset is in a wearing state.

In the embodiment of the present application, the electronic device may be a bluetooth headset. Before acquiring the noise signal transmitted by the Bluetooth headset, the noise signal near the ear of the driver needs to be acquired through the Bluetooth headset. Therefore, whether the wireless Bluetooth headset is in a wearing state or not can be detected firstly, and optionally, whether the wireless Bluetooth headset is in the wearing state or not can be detected through an infrared sensor arranged in the wireless Bluetooth headset. It should be noted that, when the wireless bluetooth headset is worn on the ear of the driver, some areas may be shielded, and in this case, the infrared sensor may be set in the shielded area after the wireless bluetooth headset is in the wearing state, and then it may be determined whether the infrared signal emitted by the infrared sensor is shielded by detecting the state value returned by the infrared sensor, so as to determine whether the wireless bluetooth headset is in the wearing state or the non-wearing state. It will be appreciated that the wireless bluetooth headset is determined to be in a worn state when the returned status value indicates that the infrared signal is obscured, and the wireless bluetooth headset is determined to be in an unworn state when the returned status value indicates that the infrared signal is not obscured.

Furthermore, after the wireless Bluetooth headset is determined to be in the wearing state, whether the state of the wireless Bluetooth headset is in the starting state or not can be acquired. The wireless bluetooth headset may at least include a locked state, an unlocked state, an off state, an on state, a dormant state, or a combination of several states, for example, a locked and off state, an unlocked and on state, a locked and off state, and the like, which is not limited herein. Specifically, when the wireless bluetooth headset is in a locked state, a plurality of function keys or function buttons of the wireless bluetooth headset are not operable, so that the wireless bluetooth headset is prevented from being touched by a user by mistake and being used by others without permission of the user; when the wireless Bluetooth headset is in an unlocked state, it indicates that a plurality of function keys or function buttons of the wireless Bluetooth headset are operable, so that a user can conveniently adjust functions of the wireless Bluetooth headset, such as volume up and volume down; when the wireless Bluetooth headset is in a power-on state, the wireless Bluetooth headset can be used currently; when the wireless Bluetooth headset is in a power-off state, the wireless Bluetooth headset is not available currently; when the wireless Bluetooth headset is in the dormant state, the wireless Bluetooth headset is in a standby working state currently.

In the embodiment of the application, whether the wireless bluetooth headset is in the power-on state or not can be determined by detecting whether a plurality of function keys or function buttons of the wireless bluetooth headset are in the normal working state or whether the wireless bluetooth headset can be used currently. Specifically, if it is detected that a plurality of function keys or function buttons of the wireless bluetooth headset are in a normal working state, or it is detected that the wireless bluetooth headset can be currently used, it is determined that the wireless bluetooth headset is in a power-on state.

By the method, after the wireless Bluetooth headset is determined to be in the power-on state and the wearing state, the noise signals near the ears of the driver can be collected at the preset sampling rate through the microphone arranged in the Bluetooth headset.

Alternatively, the bluetooth headset may be a TWS (True Wireless Stereo) bluetooth headset. When the Bluetooth headset is a TWS Bluetooth headset, the vehicle can be connected with the TWS Bluetooth headset first when the TWS Bluetooth headset collects noise signals near the ears of the driver. When the vehicle is connected with the TWS Bluetooth headset, the TWS Bluetooth headset needs to be in a pairing state, and when the TWS Bluetooth headset is detected to be in the pairing state, the vehicle can be wirelessly connected with the TWS Bluetooth headset.

The pairing state means that after the TWS bluetooth headset enters the pairing state, the external device can scan the TWS bluetooth headset, and the TWS bluetooth headset can respond to a connection request of the external device. The TWS bluetooth headset in the pairing state may be understood as the TWS bluetooth headset is in a page scan (page scan) mode and an inquiry scan (inquiry scan) mode at the same time. Wherein the page scan mode may be understood as the TWS bluetooth headset being in a connectable state and the inquiry scan mode may be understood as the TWS bluetooth headset being in a discoverable state.

In the embodiment of the application, after the TWS bluetooth headset is in the pairing state, the vehicle can scan the TWS bluetooth headset, so that the vehicle can send a connection request to the TWS bluetooth headset, after the TWS bluetooth headset receives the connection request sent by the vehicle, in response to the connection request, the primary headset of the TWS bluetooth headset establishes wireless connection with the vehicle sending the connection request, and the primary headset of the TWS bluetooth headset is quickly connected with the secondary headset of the TWS bluetooth headset in a wireless connection manner, so as to realize the wireless connection between the TWS bluetooth headset and the vehicle.

Step S220: and if the Bluetooth headset is in a wearing state, acquiring a noise signal transmitted by the Bluetooth headset.

In the embodiment of the application, after the Bluetooth headset is determined to be in the wearing state by the method, the noise signal near the ear of the driver, which is acquired by the Bluetooth headset in real time, is acquired.

Step S230: based on the noise signal, an inverted signal is generated that is opposite in phase and equal in amplitude to the noise signal.

In the embodiment of the present application, the vehicle may also consider the magnitude of the inverted signal when generating the inverted signal having the opposite phase to the noise signal. In order to better reduce noise of the noise signal, in general, when the vehicle generates the reverse signal, the amplitude of the reverse signal is set to be equal to the amplitude of the noise signal, or the amplitude of the reverse signal is set to be higher than the amplitude of the noise signal.

As one way, after determining that the bluetooth headset is in the wearing state, the vehicle starts to acquire a noise signal transmitted by the bluetooth headset, and the vehicle may acquire a phase and an amplitude of the noise signal after acquiring the noise signal, so that an opposite-phase signal having an opposite phase and an equal amplitude to those of the noise signal may be generated based on the phase and the amplitude of the noise signal.

Step S240: and playing the reversed phase signal through a loudspeaker of the vehicle.

In the embodiment of the application, after the vehicle generates the opposite phase signal which is opposite to the phase of the noise signal and has the same amplitude, the opposite phase signal can be played through the loudspeaker of the vehicle, so that the aim of offsetting the noise signal near the ears of the driver is fulfilled.

The noise reduction method provided by the application comprises the steps of firstly obtaining whether the Bluetooth headset is in a wearing state, obtaining a noise signal transmitted by the Bluetooth headset if the Bluetooth headset is in the wearing state, then generating an opposite phase signal which is opposite to the phase of the noise signal and has the same amplitude value based on the noise signal, and playing the opposite phase signal through a loudspeaker of a vehicle. Acquire near driver's ear's noise signal through bluetooth headset to send noise signal for the vehicle, and then the vehicle can produce with this noise signal opposite phase, the opposition signal that amplitude equals, thereby the vehicle can be based on the opposition signal noise reduction treatment to the noise signal of driver's ear department, guarantees the noise reduction effect to the noise signal of driver's ear department.

Referring to fig. 5, a noise reduction method provided in an embodiment of the present application is applied to a vehicle or a server shown in fig. 1 or fig. 2, where the method includes:

step S310: and acquiring the noise signal transmitted by the electronic equipment at the current time.

In the embodiment of the present application, the noise signal transmitted by the secondary electronic device may be understood as a noise signal transmitted by the electronic device currently for a specified number of frames or a preset duration. It will be appreciated that the electronic device may transmit a specified number of frames of noise signals each time it transmits a noise signal to the vehicle, so that the vehicle may process the specified number of frames of noise signals each time it receives the specified number of frames of noise signals transmitted by the electronic device. Of course, the electronic device may transmit the noise signal for a preset time each time when transmitting the noise signal to the vehicle.

The noise signal with the specified frame number or the preset duration is a preset noise signal which can be transmitted by the electronic device at one time, for example, it can be set that the electronic device can transmit 2 frames of noise signals to the vehicle at one time. As one way, the length of each frame of noise signal can be preset, for example, each frame of noise signal can include 20ms of noise, that is, each time the electronic device transmits 40ms of noise signal to the vehicle.

As one mode, since the electronic device performs the collection at the preset sampling rate when collecting the noise signal, the electronic device may transmit the noise signal to the vehicle once every time the electronic device collects the noise signal at the preset sampling rate.

Step S320: and if the amplitude of the noise signal transmitted by the electronic equipment at the current time is greater than the preset amplitude, generating an opposite phase signal which is opposite to the phase of the noise signal transmitted by the electronic equipment at the current time.

In the embodiment of the present application, the noise reduction process is a continuous process of feedback adjustment. Therefore, the vehicle may adjust the phase and amplitude of the generated inverted signal according to the amplitude of the noise signal continuously collected by the electronic device until the amplitude of the noise signal transmitted by the electronic device is below the preset amplitude after the noise reduction is completed.

As a mode, the preset amplitude is the preset amplitude of the noise signal when the noise signal is not required to be denoised. After the vehicle acquires the noise signal transmitted by the current electronic device, the phase and the amplitude of the noise signal transmitted by the current electronic device may be acquired first, the amplitude of the noise signal transmitted by the current electronic device is compared with a preset amplitude, if the amplitude of the noise signal transmitted by the current electronic device is greater than the preset amplitude, an inverse signal having a phase opposite to the phase of the noise signal transmitted by the current electronic device and an amplitude equal to the phase of the noise signal transmitted by the current electronic device is generated, and the noise reduction processing is performed on the noise signal transmitted by the current electronic device through the inverse signal; if the amplitude of the noise signal transmitted by the secondary electronic device is smaller than or equal to the preset amplitude, the noise signal is not subjected to noise reduction processing. In the driving process of the vehicle, the vehicle speeds of the vehicles may be different, the road conditions and the weather in the driving process may be different, and the amplitudes of the noise signals may be the same, so that the noise signals at the target position can be continuously collected through the electronic device at the preset sampling rate. Once the amplitude of the noise signal is detected to be larger than the preset amplitude, an opposite phase signal which is opposite to the phase of the noise signal and has the same amplitude can be generated, and the noise signal is counteracted through the opposite phase signal, so that the purpose of reducing noise is achieved.

Step S330: and playing the reversed phase signal which is opposite to the phase of the noise signal transmitted by the electronic equipment at the current time.

In the embodiment of the present application, in the case where the amplitude of the noise signal transmitted by the current electronic device is greater than the preset amplitude, an inverted signal having an opposite phase and an equal amplitude to the noise signal transmitted at the current time is generated, so that the inverted signal can be played through the horn of the vehicle.

The noise reduction method provided by the application comprises the steps of firstly obtaining a noise signal transmitted by current electronic equipment, if the amplitude of the noise signal transmitted by the current electronic equipment is larger than a preset amplitude, generating an opposite phase signal opposite to the phase of the noise signal transmitted by the current electronic equipment, and playing a direction signal opposite to the phase of the noise signal transmitted by the current electronic equipment. The noise signal of the target position is obtained through the electronic equipment arranged at the target position, the noise signal is sent to the vehicle, and then the vehicle can generate an opposite phase signal with the opposite phase of the noise signal under the condition that the amplitude of the noise signal is judged to be larger than the preset amplitude, so that the noise of the noise signal of the target position can be reduced based on the opposite phase signal by the vehicle, and the noise reduction effect of the noise signal of the target position is ensured.

Referring to fig. 6, a noise reduction method provided in an embodiment of the present application is applied to a vehicle or a server shown in fig. 1 or fig. 2, where the method includes:

step S410: and acquiring whether the Bluetooth headset is in a wearing state.

Step S420: and if the Bluetooth headset is in a wearing state, acquiring a noise signal transmitted by the Bluetooth headset.

Step S430: and generating a first reverse signal based on the noise signal collected by the left earphone of the Bluetooth earphone, and generating a second reverse signal based on the noise signal collected by the right earphone of the Bluetooth earphone.

In the embodiment of the present application, when the vehicle generates the inverse phase signal having the phase opposite to that of the noise signal and the same amplitude based on the noise signal transmitted by the bluetooth headset, the noise signals transmitted by the left and right headsets of the bluetooth headset may be separated, so that the inverse phase signals having the phase opposite to that of the noise signal transmitted by the left and right headsets of the bluetooth headset and the same amplitude may be generated, respectively.

Specifically, the first inverse signal may be generated based on a noise signal collected by a left earphone of the bluetooth headset. The first reverse phase signal is opposite to the noise signal collected by the left earphone of the Bluetooth earphone in phase and equal in amplitude.

And generating a second reversed phase signal based on the noise signal collected by the right earphone of the Bluetooth earphone. And the second phase-reversed signal is opposite to the noise signal collected by the right earphone of the Bluetooth earphone in phase and has the same amplitude.

As one way, when the bluetooth headset transmits a noise signal to the vehicle, the noise signal collected by the left headset of the bluetooth headset and the noise signal collected by the right headset of the bluetooth headset may be distinguished by different identifiers, for example, the noise signal collected by the left headset of the bluetooth headset may be represented by an "L" identifier, and the noise signal collected by the right headset of the bluetooth headset may be represented by an "R" identifier. Therefore, when the vehicle receives the noise signal transmitted by the Bluetooth headset, whether the noise signal is collected by the left headset of the Bluetooth headset or the right headset of the Bluetooth headset can be determined according to the identifier of the noise signal.

After the vehicle has determined the source of the noise signal based on the identification of the noise signal transmitted by the bluetooth headset, the noise signals collected by the left and right headsets of the bluetooth headset may be processed separately. For example, if the noise signal transmitted by the bluetooth headset includes an "L" noise signal and an "R" noise signal, the vehicle may generate a first noise signal based on the "L" noise signal and a second noise signal based on the "R" noise signal.

Step S440: and playing the first reverse signal through the left loudspeaker of the vehicle, and playing the second reverse signal through the right loudspeaker of the vehicle.

In this application embodiment, can establish the corresponding relation between the left and right earphone of bluetooth headset and the left and right loudspeaker of vehicle in advance to the noise signal that the vehicle was gathered based on bluetooth headset's left earphone generates first reverse signal, and after the noise signal that the right earphone of based on bluetooth headset gathered generated the second antiphase signal, can be directly based on the corresponding relation, through the loudspeaker broadcast first antiphase signal and the second antiphase signal that corresponds that sets up.

As a mode, the correspondence relationship may be that a left earphone of the bluetooth headset corresponds to a left speaker of the vehicle, and a right earphone of the bluetooth headset corresponds to a right speaker of the vehicle, so that after the vehicle generates a first inverted signal based on a noise signal collected by the left earphone of the bluetooth headset, and generates a second inverted signal based on a noise signal collected by the right earphone of the bluetooth headset, the first inverted signal may be played through the left speaker of the vehicle, and the second inverted signal may be played through the right speaker of the vehicle.

As another mode, the corresponding relationship may be that the left earphone of the bluetooth headset corresponds to the right speaker of the vehicle, and the right earphone of the bluetooth headset corresponds to the left speaker of the vehicle, so that after the vehicle generates the first reverse signal based on the noise signal collected by the left earphone of the bluetooth headset and generates the second reverse signal based on the noise signal collected by the right earphone of the bluetooth headset, the first reverse signal may be played through the right speaker of the vehicle, and the second reverse signal may be played through the left speaker of the vehicle. In this manner, the correspondence may be set based on the head direction of the driver in real time. For example, when the head of the driver faces the direction of the vehicle head, the corresponding relationship may be that the left earphone of the bluetooth earphone corresponds to the left horn of the vehicle, and the right earphone of the bluetooth earphone corresponds to the right horn of the vehicle; when the head of the driver rotates backwards from the direction right facing the vehicle head, the head of the driver faces back to the direction of the vehicle head, the corresponding relation can be that the left earphone of the Bluetooth earphone corresponds to the right loudspeaker of the vehicle, and the right earphone of the Bluetooth earphone corresponds to the left loudspeaker of the vehicle.

The noise reduction method provided by the application comprises the steps of firstly obtaining whether a Bluetooth headset is in a wearing state, obtaining a noise signal transmitted by the Bluetooth headset if the Bluetooth headset is in the wearing state, then generating a first reverse signal based on the noise signal collected by a left headset of the Bluetooth headset, generating a second reverse signal based on the noise signal collected by a right headset of the Bluetooth headset, finally playing the first reverse signal through a left loudspeaker of a vehicle, and playing the second reverse signal through a right loudspeaker of the vehicle. Acquire near driver's ear's noise signal through bluetooth headset to send noise signal for the vehicle, and then the vehicle can produce with this noise signal opposite phase, the opposition signal that amplitude equals, thereby the vehicle can be based on the opposition signal noise reduction processing is carried out to the noise signal of both sides ear department about the driver, offsets the noise on driver's head both sides, reaches the purpose of noise reduction.

Referring to fig. 7, a noise reduction apparatus 500 provided in an embodiment of the present application runs on a vehicle, where the vehicle is connected to an electronic device, and the apparatus 500 includes:

the first signal acquiring unit 510 is configured to acquire a noise signal transmitted by the electronic device, where the noise signal is acquired by the electronic device at a target location.

As one way, the first signal obtaining unit 510 is further configured to obtain a noise signal transmitted by the electronic device at the current time.

As another mode, the first signal obtaining unit 510 is further configured to obtain whether the bluetooth headset is in a wearing state; and if the Bluetooth headset is in a wearing state, acquiring a noise signal transmitted by the Bluetooth headset.

A second signal obtaining unit 520, configured to generate an inverted signal based on the noise signal, where the inverted signal is opposite in phase to the noise signal.

In one way, the second signal obtaining unit 520 is configured to generate an inverted signal with an opposite phase and an equal amplitude to the noise signal based on the noise signal.

Alternatively, the second signal obtaining unit 520 is further configured to generate an inverted signal with a phase opposite to that of the noise signal transmitted by the electronic device at the current time if the amplitude of the noise signal transmitted by the electronic device at the current time is greater than a preset amplitude.

Optionally, the second signal obtaining unit 520 is further configured to generate a first reverse signal based on a noise signal collected by a left earphone of the bluetooth earphone; and generating a second antiphase signal based on the noise signal collected by the right earphone of the Bluetooth earphone.

And a denoising unit 530, configured to perform denoising processing on the noise signal according to the inverted signal.

In one way, the noise reduction unit 530 is configured to play the inverted signal with a phase opposite to that of the noise signal transmitted by the electronic device at the current time.

Alternatively, the noise reduction unit 530 is configured to play the inverse signal through a horn of the vehicle.

Optionally, the noise reduction unit 530 is further configured to play the first backward signal through a left speaker of the vehicle; and playing the second reverse signal through a right loudspeaker of the vehicle.

It should be noted that the device embodiment and the method embodiment in the present application correspond to each other, and specific principles in the device embodiment may refer to the contents in the method embodiment, which is not described herein again.

A vehicle provided by the present application will be described below with reference to fig. 8.

Referring to fig. 8, based on the above noise reduction method and apparatus, another vehicle 800 capable of executing the above noise reduction method is provided in the embodiment of the present application. Vehicle 800 includes a vehicle machine system 810, which vehicle machine system 810 may include one or more processors 812 (only one shown), memory 814, and network module 816 coupled to each other. The memory 814 stores programs that can execute the content of the foregoing embodiments, and the processor 812 can execute the programs stored in the memory 814.

In-vehicle system 810 may be a device having a display screen and supporting a network connection or communication connection with other electronic devices. The connection between the car machine system 810 and other electronic devices may be a wired connection or a wireless connection. The in-vehicle system 810 may send data such as vehicle speed information, location information, etc. to other electronic devices. The in-vehicle system 810 may also process the received data, such as processing and displaying the received multimedia data sent by other electronic devices. Additionally, the in-vehicle system 810 may include built-in software applications, such as map-like applications, music-like applications, video-playing-like applications, radio-broadcasting-like applications, web browser applications, search-like applications, etc., to provide navigation, entertainment, etc. functionality.

Processor 812 may include one or more processing cores, among others. The processor 812 interfaces with various components throughout the vehicle 800 using various interfaces and circuitry to perform various functions of the vehicle 800 and process data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 814 and invoking data stored in the memory 814. Alternatively, the processor 812 may be implemented in hardware using at least one of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 812 may integrate one or a combination of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a modem, and the like. Wherein, the CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for rendering and drawing display content; the modem is used to handle wireless communications. It is to be understood that the modem may be implemented by a communication chip, rather than integrated into the processor 812.

The Memory 814 may include a Random Access Memory (RAM) or a Read-Only Memory (Read-Only Memory). The memory 814 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 814 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing various method embodiments described below, and the like. The stored data area may also store data created by the vehicle 800 during use (e.g., phone books, audio-visual data, chat log data), and the like.

The network module 816 is configured to receive and transmit electromagnetic waves, and implement interconversion between the electromagnetic waves and electrical signals, so as to communicate with a communication network or other devices, for example, communicate with an audio playing device. The network module 816 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 network module 816 may communicate with various networks, such as the internet, an intranet, a wireless network, or with other devices via a wireless network. The wireless network may comprise a cellular telephone network, a wireless local area network, or a metropolitan area network. For example, the network module 816 may exchange information with a base station.

Referring to fig. 9, a block diagram of a computer-readable storage medium according to an embodiment of the present application is shown. The computer-readable storage medium 900 has stored therein program code that can be called by a processor to execute the methods described in the above-described method embodiments.

The computer-readable storage medium 900 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. Alternatively, the computer-readable storage medium 900 includes a non-volatile computer-readable storage medium. The computer readable storage medium 900 has storage space for program code 910 to perform any of the method steps of the method described above. The program code can be read from or written to one or more computer program products. The program code 910 may be compressed, for example, in a suitable form.

According to the noise reduction method, the noise reduction device, the vehicle and the storage medium, firstly, a noise signal transmitted by electronic equipment is obtained, the noise signal is a signal obtained by the electronic equipment at a target position, then, an inverted signal is generated based on the noise signal, the phase of the inverted signal is opposite to that of the noise signal, and finally, noise reduction processing is carried out on the noise signal according to the inverted signal. The noise signal of the target position is obtained through the electronic equipment arranged at the target position, the noise signal is sent to the vehicle, then the vehicle can generate an opposite phase signal with the opposite phase of the noise signal, and therefore the noise reduction processing can be carried out on the noise signal of the target position on the basis of the opposite phase signal by the vehicle, and the noise reduction effect on the noise signal of the target position is guaranteed.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A noise reduction method is applied to a vehicle, the vehicle is connected with an electronic device, and the method comprises the following steps:

acquiring a noise signal transmitted by the electronic equipment, wherein the noise signal is acquired by the electronic equipment at a target position;

generating an inverted signal based on the noise signal, the inverted signal being in an opposite phase to the noise signal;

and performing noise reduction processing on the noise signal according to the inverted signal.

2. The method of claim 1, wherein generating an inverted signal based on the noise signal comprises:

based on the noise signal, an inverted signal is generated that is opposite in phase and equal in amplitude to the noise signal.

3. The method of claim 1, wherein said obtaining a noise signal transmitted by said electronic device comprises:

acquiring a noise signal transmitted by the electronic equipment at the current time;

the generating an inverted signal based on the noise signal includes:

if the amplitude of the noise signal transmitted by the electronic equipment at the current time is larger than the preset amplitude, generating an inverted signal with the phase opposite to that of the noise signal transmitted by the electronic equipment at the current time;

according to the inverted signal, the noise reduction processing is carried out on the noise signal, and the noise reduction processing comprises the following steps:

and playing the reversed phase signal which is opposite to the phase of the noise signal transmitted by the electronic equipment at the current time.

4. The method of claim 1, wherein the electronic device is a bluetooth headset, and wherein the acquiring the noise signal transmitted by the electronic device comprises:

acquiring whether the Bluetooth headset is in a wearing state;

and if the Bluetooth headset is in a wearing state, acquiring a noise signal transmitted by the Bluetooth headset.

5. The method of claim 4, wherein the denoising the noise signal according to the inverted signal comprises:

and playing the reversed phase signal through a loudspeaker of the vehicle.

6. The method of claim 5, wherein generating an inverse signal based on the noise signal comprises:

generating a first reverse signal based on a noise signal collected by a left earphone of the Bluetooth earphone;

the noise reduction processing of the noise signal according to the inverted signal includes:

and playing the first reverse signal through a left loudspeaker of the vehicle.

7. The method of claim 5, wherein generating an inverse signal based on the noise signal comprises:

generating a second antiphase signal based on a noise signal collected by a right earphone of the Bluetooth earphone;

and playing the second reverse signal through a right loudspeaker of the vehicle.

8. A noise reducing device for operation in a vehicle, the vehicle being connected to an electronic device, the device comprising:

the first signal acquisition unit is used for acquiring a noise signal transmitted by the electronic equipment, wherein the noise signal is acquired by the electronic equipment at a target position;

a second signal acquisition unit configured to generate an inverted signal based on the noise signal, the inverted signal having a phase opposite to that of the noise signal;

and the noise reduction unit is used for carrying out noise reduction processing on the noise signal according to the inverted signal.

9. A vehicle, comprising a vehicle machine system, the vehicle machine system comprising one or more processors; one or more programs stored in the memory and configured to be executed by the one or more processors to perform the method of any of claims 1-7.

10. A computer-readable storage medium, having program code stored therein, wherein the program code when executed by a processor performs the method of any of claims 1-7.