Noise reduction device and its control method

Abstract

In the embodiment of the present application, a pressure sensing component is used to detect the pressure distribution information of the contact surface when an object contacts the noise reduction device; when it is determined according to the pressure distribution information that a human body contacts the noise reduction device, contact information between the human body and the noise reduction device is obtained according to the pressure distribution information; and the audio playing component of the noise reduction device is controlled to play the anti-phase sound according to the contact information to achieve noise reduction. Since the embodiment of the present application turns on noise reduction only when it detects that a human body contacts the noise reduction device, and controls different audio playing components to play anti-phase sounds according to the contact information between the human body and the noise reduction device, the noise reduction device can perform flexible noise reduction according to different contact situations between the human body and the noise reduction device.

Description

Technical Field

[0001] This application relates to the technical field of audio processing, and particularly to a noise reduction device and a control method thereof. Background Art

[0002] With the rapid development of society, the phenomenon of noise pollution in life is becoming increasingly serious, and severe noise will affect people's sleep quality. To improve sleep quality, users usually use noise reduction devices to eliminate the impact of noise on sleep. However, in the related art, traditional noise reduction devices have the problem of poor flexibility during noise reduction. Summary of the Invention

[0003] An embodiment of this application provides a noise reduction device and a control method thereof, which can effectively improve the flexibility of the noise reduction device during noise reduction.

[0004] In a first aspect, an embodiment of this application provides a noise reduction device, including:

[0005] A pressure sensing component, configured to detect the pressure distribution information of the contact surface when an object contacts the noise reduction device;

[0006] An audio collection component, configured to collect the external noise of the noise reduction device;

[0007] An audio playback component, configured to play the anti-phase sound corresponding to the external noise;

[0008] A processor, the processor is respectively connected to the pressure sensing component, the audio collection component, and the audio playback component, and the processor is configured to:

[0009] Obtain the pressure distribution information detected by the pressure sensing component;

[0010] When it is determined according to the pressure distribution information that a human body contacts the noise reduction device, obtain the contact information between the human body and the noise reduction device according to the pressure distribution information;

[0011] Control the audio playback component to play the anti-phase sound according to the contact information to achieve noise reduction.

[0012] In a second aspect, an embodiment of this application provides a control method for a noise reduction device, including:

[0013] Detect the pressure distribution information of the contact surface when an object contacts the noise reduction device;

[0014] When it is determined according to the pressure distribution information that a human body contacts the noise reduction device, obtain the contact information between the human body and the noise reduction device according to the pressure distribution information;

[0015] Controlling the noise reduction device to play the inverted sound of external noise according to the contact information to achieve noise reduction.

[0016] In an embodiment of the present application, a pressure sensing component is used to detect the pressure distribution information of the contact surface when an object contacts the noise reduction device; when it is determined according to the pressure distribution information that a human body contacts the noise reduction device, contact information between the human body and the noise reduction device is obtained according to the pressure distribution information; and according to the contact information, an audio playback component of the noise reduction device is controlled to play the inverted sound to achieve noise reduction.

[0017] Since in the embodiment of the present application, noise reduction is only turned on when it is detected that a human body contacts the noise reduction device, and different audio playback components are controlled to play the inverted sound according to the contact information between the human body and the noise reduction device, the noise reduction device can perform flexible noise reduction according to different contact situations between the human body and the noise reduction device. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following described drawings are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of a noise reduction device provided by an embodiment of the present application.

[0020] Figure 2 It is a pressure distribution diagram when no object contacts the noise reduction device provided by an embodiment of the present application.

[0021] Figure 3 It is a first pressure distribution diagram when an object contacts the noise reduction device provided by an embodiment of the present application.

[0022] Figure 4 It is a second pressure distribution diagram when an object contacts the noise reduction device provided by an embodiment of the present application.

[0023] Figure 5 It is a schematic flowchart of a control method for a noise reduction device provided by an embodiment of the present application.

[0024] Figure 6 It is a schematic flowchart of controlling noise reduction according to a sleeping posture provided by an embodiment of the present application.

[0025] Figure 7 It is a schematic flowchart of confirming a sleeping posture according to pressure distribution information provided by an embodiment of the present application.

[0026] Figure 8 It is a schematic flowchart of controlling single-sided or bilateral noise reduction provided by an embodiment of the present application.

[0027] Figure 9 It is another schematic flowchart of the control method of the noise reduction device provided by the embodiments of the present application.

[0028] Figure 10 It is a schematic structural diagram of the flexible speaker provided by the embodiments of the present application.

[0029] Figure 11 It is a schematic diagram of the modules of the control device provided by the embodiments of the present application. Detailed implementation manners

[0030] Please refer to the drawings, where the same component symbols represent the same components. The principle of the present application is illustrated by being implemented in a suitable computing environment. The following description is based on the specific embodiments of the present application illustrated, and it should not be regarded as limiting other specific embodiments of the present application not detailed herein.

[0031] The embodiments of the present application provide a noise reduction device, which can be implemented in a hardware or software manner. Among them, the noise reduction device may include a pressure sensing component, an audio collection component, an audio playback component, and a processor.

[0032] In some embodiments, the noise reduction device may be bedding, such as a noise reduction pillow. On the one hand, the noise reduction pillow is used to support the user's head, so that the user's head and shoulders and neck can be supported during falling asleep and sleeping. On the other hand, it can eliminate the noise in the surrounding environment and provide a better sleep experience for the user. The shape, material, and size of the noise reduction pillow are not limited. For example, the shape can be U-shaped, cube-shaped, ellipsoidal, or circular, and the material can be latex, silica gel, etc.

[0033] Among them, the pressure sensing component is used to detect the pressure distribution information of the contact surface when an object contacts the noise reduction device. For example, it can obtain the pressure distribution information of the contact surface between a body part of a human body and the noise reduction device, or it can obtain the pressure distribution information of the contact surface between a certain component of an object and the noise reduction device. For example, when the noise reduction device is a noise reduction pillow, when the user's head contacts the noise reduction pillow, the pressure distribution information of the contact surface between the head and the noise reduction pillow can be obtained through the pressure sensor.

[0034] The pressure sensing component can be arranged in various positions. For example, in order to detect the contact between the noise reduction device and the human body, the pressure sensing component can be arranged on the outer surface of the noise reduction device. In some embodiments, as Figure 1 shown, the pressure sensor can be a flexible pressure sensor, and the pressure sensor can also be a fabric pressure sensor. There are dense sensitive elements on the fabric pressure sensor. When the human body is in different sleeping postures, the force conditions on the pressure sensitive elements are different, and the overall force distribution information can be used to distinguish the sleeping postures of the user.

[0035] When using a fabric pressure sensor to obtain pressure distribution information, since the shape of the sensor is as soft and comfortable as ordinary fabric, users will not feel any discomfort during sleep. Then, the sleep posture information of the user and the height of the human ear can be identified based on the data collected by the fabric pressure sensor. Based on the user's sleep posture information and the height of the human ear, it can be selectively determined whether to implement active noise reduction, for example, whether to implement bilateral active noise reduction simultaneously or only unilateral active noise reduction, and which speaker to use for active noise reduction according to the height of the human ear. Moreover, the power consumption of the fabric pressure sensor is relatively low. By performing targeted active noise reduction, not only is the noise superposition caused by poor noise reduction avoided, but also the power consumption is effectively saved.

[0036] Among them, the audio collection component is used to collect the external noise of the noise reduction device. In some embodiments, the audio collection component can be a device with an audio collection function such as a radio or a microphone. It can be specifically set according to actual needs.

[0037] Among them, the audio playback component is used to play the inverted sound corresponding to the external noise to cancel the external noise. The audio playback component can have various forms, such as Figure 1 As shown, for example, the audio playback component can be a flexible speaker. Each flexible speaker contains multiple sound-emitting parts, and different sound-emitting parts can be controlled to emit inverted sounds. During active noise reduction, the audio collection component and the audio playback component are set correspondingly.

[0038] When using a flexible speaker instead of a traditional rigid speaker, first, since the flexible speaker can be bent and folded according to the shape design requirements of the noise reduction device, it ensures the aesthetic appearance of the noise reduction device while not affecting the user's sleep due to the shape. Second, in an open / semi-open space, there is a "sound short-circuit" phenomenon when using a traditional speaker, that is, the sound coming out from the front of the speaker cancels out the inverted sound emitted from the back of the speaker, resulting in a noise cancellation phenomenon, while the flexible speaker has a large area and is not prone to the "sound short-circuit" phenomenon. Third, in terms of the physical properties of the flexible speaker, it has the characteristics of low power consumption, environmental friendliness (no electromagnetic interference will be generated), and simple driving, which prolongs the usage time of the noise reduction function. Generally speaking, the flexible speaker has the advantages of variable shape, low power consumption, and not being prone to sound short-circuit. By processing the flexible speaker into a convex shape to make it as close as possible to the human ear, a near-field limited space scenario is constructed, effectively achieving better active noise reduction.

[0039] Since traditional open - space active noise reduction requires calculating the sound field in three - dimensional space, it consumes a large amount of computing resources and capabilities, and correspondingly also requires a large amount of energy supply. Such an overhead is unaffordable for ordinary terminals. In the embodiments of the present application, by adopting a combination of a flexible speaker and a fabric pressure sensor, active noise reduction in open space can be achieved with lower power consumption and lower computing power.

[0040] Through the combination of a flexible speaker and a fabric pressure sensor, the fabric pressure sensor is used to obtain the posture of the human head in three - dimensional space, and the flexible shape of the flexible speaker is used to get as close as possible to the human ear. By constructing such a scene of a near - field limited space of the human ear, not only can the noise reduction be automatically turned on, but also the function of active noise reduction can achieve better results.

[0041] Among them, the processor is the control center of the noise reduction device, connecting all the electronic components set in the entire noise reduction device through various interfaces and circuits. By running or loading the computer programs stored in the memory and calling the data stored in the memory, it executes various functions and processes data, thereby monitoring the whole. In some embodiments, the processor is respectively connected to the pressure sensing component, the audio collection component, and the audio playback component.

[0042] In the embodiments of the present application, the processor of the noise reduction device will load the instructions corresponding to the processes of one or more computer programs into the memory according to the following steps, and the processor will run the computer programs stored in the memory to implement various functions. The processor can be used to:

[0043] Obtain the pressure distribution information detected by the pressure sensing component;

[0044] When it is determined that the human body is in contact with the noise reduction device according to the pressure distribution information, obtain the contact information between the human body and the noise reduction device according to the pressure distribution information;

[0045] Control the audio playback component to play anti - phase sound according to the contact information to achieve noise reduction.

[0046] Among them, when a human body or an object is in contact with the noise reduction device, the pressure sensing component of the noise reduction device can detect the pressure exerted by the human body or the object on the noise reduction device. Since this pressure is not a single - point pressure, but the pressure at multiple points distributed over the entire plane on the surface of the noise reduction device. Then, according to the pressure magnitudes of different points and the positions of different points, the pressure distribution information corresponding to the pressure can be obtained. In some embodiments, the pressure distribution information can be a pressure distribution map, as shown in the figure, Figure 2 is the pressure distribution map when there is no object in contact with the noise reduction device, Figure 3 is the first pressure distribution map when there is an object in contact with the noise reduction device, Figure 4This is the second pressure distribution diagram when an object is in contact with the noise reduction device. Moreover, the lighter the color in the distribution diagram, the greater the corresponding pressure, and the shape of the pressure distribution diagram corresponds to the shape of the object in contact with the noise reduction device.

[0047] When an object or a human body leans on the noise reduction device, due to differences in shape, weight, etc., the pressure distribution information of the object and the human body is different. Then, based on the pressure distribution information, the processor can also obtain the contact information, and based on the contact information, it can be determined whether it is a human body or an object in contact with the noise reduction device. In some embodiments, the processor can also determine which body part of the human body is in contact with the noise reduction device. For example, it can be determined that a person's head is leaning on the noise reduction device, and specific body parts such as a person's ears and the back of the head can also be determined based on the pressure distribution information.

[0048] When the user's head leans on the noise reduction device, the fabric pressure sensor on the surface of the noise reduction device can sense the pressure distribution information of the head leaning on the noise reduction device. This pressure distribution information can comprehensively reflect the contact contour of the head leaning on the pillow surface and the depth of the lean. Through this pressure distribution information, it can be determined whether the user is leaning on the noise reduction device, whether the user's sleeping position is flat or side sleeping, and which area of the noise reduction device the user's head is leaning on. Then, in some embodiments, the processor is further configured to:

[0049] Input the pressure distribution information into the sleeping position classification model to obtain the sleeping position of the human body;

[0050] When the sleeping position of the human body is a preset sleeping position, determine the contact information between the human body and the pillow according to the pressure distribution information.

[0051] Since the sleeping positions of different users are different, and the sleeping positions of users will also change during sleep, corresponding noise reduction strategies can be adopted for different sleeping positions. For different noise reduction methods, the noise reduction strategies are also different. For example, when the active noise reduction method is adopted, the noise reduction interval during noise reduction can be determined according to the leaning area of the human head on the noise reduction device, and then the anti-phase sound corresponding to the external noise is emitted through the audio playback component in the corresponding area to achieve noise reduction. Then, in some embodiments, the noise reduction device is provided with a preset noise reduction area, and a plurality of audio playback components are arranged in the preset noise reduction area. The processor is further configured to:

[0052] Determine the target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact information;

[0053] Determine the target audio playback component corresponding to the human body during noise reduction from the audio playback components arranged in the target noise reduction interval according to the contact information;

[0054] Control the target audio playback component to play the anti-phase sound.

[0055] For example, the entire noise reduction device can be set as a preset noise reduction area, the left area of the noise reduction device can be set as the first noise reduction interval, the middle area can be set as the second noise reduction interval, and the right area can be set as the third noise reduction interval. Then, according to the contact information, the target noise reduction interval can be selected therefrom. Then, according to the contact information, the target audio playback component can be determined from the audio playback components provided in the target noise reduction interval. Then, the target audio playback component is controlled to play an inverted sound.

[0056] Since the contact information can include various types of information, when the contact information includes information on the contact position between the human body and the noise reduction device, the interval against which the human body leans can be determined according to the contact position, and this interval can be used as the target interval. Then, in some embodiments, the processor is configured to:

[0057] Obtain the contact position information of the contact surface between the noise reduction device and the human body according to the contact information;

[0058] Determine the target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact position information.

[0059] For example, when the user's head leans on the left area of the noise reduction device, the area position information where the head leans can be used as the contact position information. Then, according to this position information, the left area of the noise reduction device can be determined as the target noise reduction interval corresponding to this human body.

[0060] In some embodiments, the preset noise reduction area can be divided into multiple noise reduction intervals. Then, the processor can be configured to:

[0061] Divide the preset noise reduction area into multiple noise reduction intervals according to a preset interval;

[0062] Determine the target noise reduction interval from the multiple noise reduction intervals according to the contact position information.

[0063] For example, through the classification rules of sleeping postures, the entire surface of the noise reduction device can be divided into two, three or even more noise reduction intervals. For example, when the sleeping postures include sleeping in the middle, sleeping on the left side, sleeping on the right side, sleeping on the left, and sleeping on the right, the entire area of the noise reduction device can be divided into five noise reduction intervals according to different intervals, and can be specifically set according to actual needs. Then, according to the contact position between the head and the noise reduction device, it can be determined in which noise reduction interval the head is located, and this noise reduction interval is set as the target noise reduction interval.

[0064] Since there are multiple audio playback components arranged within a preset noise reduction area, there are also multiple audio playback components corresponding to different intervals. After determining the target noise reduction interval, the target audio playback component can be determined from the audio playback components within the corresponding interval. For example, setting a number of audio playback components in the noise reduction device means that there are multiple audio playback components in the left area and also multiple audio playback components in the right area. Then it is necessary to further select the target audio playback component within the corresponding target interval. In some embodiments, the processor is configured to:

[0065] Obtain height information of the human body relative to the plane where the lower surface of the noise reduction device is located according to the contact information;

[0066] Determine the target audio playback component corresponding to the human body during noise reduction from the audio playback components arranged in the target noise reduction interval according to the height information.

[0067] For example, there are a number of audio playback components arranged in the entire noise reduction device. That is to say, different audio playback components are arranged according to the height of the noise reduction device. When a human body leans on the noise reduction device, due to the weight of the human body itself, the noise reduction device will deform, and then the body part of the human body may sink into the noise reduction device. For example, the ear of the human body may sink into the depression of the noise reduction device. The principle of active noise reduction is to cancel the noise by emitting the opposite-phase sound of the external noise through the audio playback component. Then the component closest to the ear can be selected according to the height of the ear to transmit the opposite-phase sound to obtain a better noise reduction effect.

[0068] In some embodiments, different height intervals can be divided according to the overall height of the noise reduction device, the corresponding height interval is selected as the target height interval according to the height of the ear, and then the target audio playback component is selected from the corresponding audio components in the target height interval. The processor can be used to:

[0069] Divide the target noise reduction interval into multiple height intervals according to a preset height interval;

[0070] Determine the target height interval from the multiple height intervals according to the height information;

[0071] Use the audio playback components arranged in the target height interval as the target audio playback components.

[0072] During sleep, a person's sleeping position changes in real time. When the sleeping position changes, the contact position and height information of the human body may also change correspondingly. At this time, if noise reduction is only performed based on the target audio playback component, the noise reduction effect may be poor. Therefore, all the remaining audio playback components in the target noise reduction interval are used as auxiliary playback components. When it is detected that a person's sleeping position changes, the target audio playback component mainly emits an anti-phase sound, and the auxiliary playback components can also assist in emitting anti-phase sounds to improve the noise reduction effect.

[0073] In some embodiments, after determining the target audio playback component, the processor is further configured to:

[0074] Use the other audio playback components arranged in the target noise reduction interval as auxiliary playback components;

[0075] When it is determined according to the pressure distribution information that the sleeping position of the human body has changed, control the target audio playback component and the auxiliary playback components to play external noise.

[0076] For example, after determining the target audio playback component, use the remaining audio playback components as auxiliary playback components. If it is detected through the noise reduction device that the pressure distribution information has changed, the change in the user's sleeping position can also be obtained by inputting the pressure distribution information into the sleeping position classification model. Then, according to the change in the user's sleeping position, control the target audio playback component and the auxiliary playback components to perform noise reduction. For example, originally the user was lying flat on the left, and after the sleeping position changed, the user was more inclined to lie flat on the left. At this time, the noise reduction effect brought by the target audio playback component playing the anti-phase sound is not as good as before the sleeping position changed. Then, by also playing the anti-phase sound through the auxiliary playback components, the problem of the deteriorated noise reduction effect caused by the change in the sleeping position can be solved, bringing a good noise reduction experience to the user.

[0077] As can be seen from the above, in the embodiments of the present application, the pressure sensing component is used to detect the pressure distribution information of the contact surface when an object contacts the noise reduction device; when it is determined according to the pressure distribution information that the human body contacts the noise reduction device, the contact information between the human body and the noise reduction device is obtained according to the pressure distribution information; and according to the contact information, the audio playback component of the noise reduction device is controlled to play the anti-phase sound to achieve noise reduction.

[0078] Since in the embodiments of the present application, noise reduction is only started when it is detected that the human body contacts the noise reduction device, and different audio playback components are controlled to play anti-phase sounds according to the contact information between the human body and the noise reduction device, the noise reduction device can perform noise reduction flexibly according to different contact situations between the human body and the noise reduction device.

[0079] To better implement the noise reduction device provided in the embodiments of the present application, the embodiments of the present application also provide a control method for the noise reduction device. The execution subject of the control method for the noise reduction device can be the noise reduction device provided in the embodiments of the present application, and the noise reduction device can be implemented in a hardware or software manner. The following is a specific analysis and description.

[0080] For example, when a human body or an object comes into contact with the noise reduction device, the pressure sensing component of the noise reduction device can detect the pressure distribution information. Then, the pressure distribution information detected by the pressure sensing component can be obtained. When it is determined according to the pressure distribution information that a human body is in contact with the noise reduction device, the contact information between the human body and the noise reduction device is obtained according to the pressure distribution information. Then, according to the contact information, the audio playback component of the noise reduction device is controlled to play the inverted sound of the external noise to achieve noise reduction.

[0081] Since the embodiments of the present application turn on noise reduction when it is detected that a human body is in contact with the noise reduction device, and control different audio playback components to play inverted sounds according to the contact information between the human body and the noise reduction device, the noise reduction device can perform flexible noise reduction according to different contact situations between the human body and the noise reduction device.

[0082] The embodiments of the present application provide a control method for a noise reduction device, as Figure 5 shown, Figure 5 is a schematic flowchart of the control method for the noise reduction device provided in the embodiments of the present application. The control method for the noise reduction device may include:

[0083] 101. Detect the pressure distribution information on the contact surface when an object comes into contact with the noise reduction device.

[0084] When a human body or an object comes into contact with the noise reduction device, the noise reduction device can detect the pressure exerted by the human body or the object on the noise reduction device. Since this pressure is not a single-point pressure, but a pressure at multiple points distributed over the entire plane of the surface of the noise reduction device. Then, according to the pressure magnitudes at different points and the positions of different points, the pressure distribution information corresponding to the pressure can be obtained. In some embodiments, the pressure distribution information may be a pressure distribution diagram, as shown in the figure, Figure 2 is the pressure distribution diagram when no object is in contact with the noise reduction device, Figure 3 is the first pressure distribution diagram when an object is in contact with the noise reduction device, Figure 4 is the second pressure distribution diagram when an object is in contact with the noise reduction device. And the lighter the color in the distribution diagram, the greater the corresponding pressure, and the shape of the pressure distribution diagram corresponds to the shape of the object in contact with the noise reduction device.

[0085] In some embodiments, a pressure sensor may be included in the noise reduction device. The pressure applied to the noise reduction device can be detected by the pressure sensor, and the pressure distribution information corresponding to the pressure can be obtained. The type of the pressure sensor is not limited. For example, the pressure sensor may be a flexible pressure sensor, and the flexible pressure sensor may be a fabric pressure sensor.

[0086] Since special yarns are selected for the fabric pressure sensor in terms of materials, it not only maintains the original characteristics of the fabric but also has good ductility and comfort. The fabric pressure sensor can detect the large-area human body pressure distribution and pressure value conditions, and collect information such as the user's sleeping position and pillow position, and it will not cause discomfort to the user. In addition, the fabric pressure sensor has low power consumption, which can effectively extend the service time of the noise reduction device.

[0087] 102. When it is determined according to the pressure distribution information that the human body is in contact with the noise reduction device, the contact information between the human body and the noise reduction device is obtained according to the pressure distribution information.

[0088] When an object or the human body leans on the noise reduction device, due to differences in shape, weight, etc., the pressure distribution information of the object and the human body is different. Then, according to the pressure distribution information, it can be determined whether it is the human body or an object that is in contact with the noise reduction device. In some embodiments, it can also be determined which body part of the human body is in contact with the noise reduction device. For example, it can be determined that a person's head is leaning on the noise reduction device, and specific body parts such as a person's ear and the back of the head can also be determined according to the pressure distribution information.

[0089] In some embodiments, when the user's head leans on the noise reduction device, the fabric pressure sensor on the surface of the noise reduction device can sense the pressure distribution information of the head leaning on the noise reduction device. This pressure distribution information can comprehensively reflect the contact profile of the head leaning on the pillow surface and the depth of leaning. Through this pressure distribution information, it can be determined whether the user is leaning on the noise reduction device, whether the user's sleeping position is flat sleeping or side sleeping, and which area of the noise reduction device the user's head is leaning on.

[0090] When the user's sleeping position during rest is side sleeping or other sleeping positions that press the ears, since one ear is pressed under the noise reduction device and the other ear is perpendicular to the pillow surface when sleeping on the side, noise reduction at this time not only cannot achieve the noise reduction effect but may even cause noise superposition. Therefore, in the embodiments of the present application, whether to perform noise reduction will also be judged according to the user's sleeping position. Specifically, as Figure 6 shown, noise reduction is controlled when the user's sleeping position is flat sleeping, and no noise reduction is performed when the user has no contact with the noise reduction device or when the user's sleeping position is side sleeping or other sleeping positions.

[0091] The sleeping posture of a user can be determined based on pressure distribution information, and different sleeping postures correspond to different pressure distribution information. For example, Figure 3 , Figure 4 as shown, Figure 3 is the pressure distribution diagram of the noise reduction device when the user is lying flat, Figure 4 is the pressure distribution diagram of the noise reduction device when the user is lying on their side. In some embodiments, the sleeping posture can also be determined by a pre-trained sleeping posture classification model. The pressure distribution information is input into the sleeping posture classification model, and when the determined sleeping posture is a preset sleeping posture, the contact information is obtained and the noise reduction is further controlled. Then, before "obtaining the contact information between the human body and the noise reduction device according to the pressure distribution information", it also includes:

[0092] Input the pressure distribution information into the sleeping posture classification model to obtain the sleeping posture of the human body;

[0093] When the sleeping posture of the human body is a preset sleeping posture, determine the contact information between the human body and the noise reduction device according to the pressure distribution information.

[0094] Among them, the sleeping posture classification model is trained with a large number of labeled samples, and the pressure distribution diagrams of different sleeping postures are classified by the model obtained in the training stage. There can be multiple sleeping postures. For example, they can be sleeping postures such as no contact, lying on the side, lying flat in the middle, lying flat on the left, lying flat on the right, etc. The height of the user's ears in the sleeping posture can be classified according to the size of the noise reduction device. For example, it can be divided into multiple categories such as high, medium-high, medium, medium-low, low, etc. For example, Figure 7 as shown, inputting the pressure distribution information into the sleeping posture classification model can obtain the sleeping posture information of the user, and further obtain the contact information according to whether it is a preset sleeping posture.

[0095] Since in this application, it is possible to determine whether to turn on the noise reduction according to the sleeping posture. For example, when there is no contact and the user is lying on their side, the contact information is not obtained and the noise reduction is not turned on. When the user is lying flat, the noise reduction strategy is further selected according to the user's contact information. On the one hand, it is convenient for the user to use, and automatic noise reduction can be achieved without the user manually turning on the noise reduction. On the other hand, automatic noise reduction reduces the power consumption increased by manually turning on the noise reduction without distinguishing the situation.

[0096] In traditional noise reduction technologies, the noise reduction is manually turned on regardless of the user's sleeping posture. However, when the user is lying on their side, the traditional noise reduction technology not only does not reduce the noise, but also brings noise to the user. It can be seen that in the embodiments of this application, the noise reduction is automatically turned on when the user is lying flat, and the noise reduction can be turned off when the user's sleeping posture changes to lying on the side, which not only extends the service life of the noise reduction device, but also improves the user experience.

[0097] 103. Control the noise reduction device to play the anti-phase sound of external noise according to the contact information to achieve noise reduction.

[0098] There are various noise reduction methods for the noise in the surrounding environment, mainly including active noise reduction and passive noise reduction.

[0099] Passive noise reduction is a noise reduction method that blocks the propagation of noise or absorbs noise through materials. According to the materials and parts used, it can be further divided into vibration damping noise control, sound absorption noise control, and sound insulation noise control.

[0100] Active noise reduction refers to emitting the anti-phase sound of external noise through a speaker, and achieving noise reduction by canceling the external noise with the anti-phase sound. Active noise reduction can be divided into feedforward active noise reduction, feedback active noise reduction, and active noise reduction combining feedforward and feedback. Feedforward noise reduction mainly places the microphone outside the speaker to collect noise. Feedback noise reduction places the microphone inside the speaker, very close to the sound source, to collect the noise entering the device. Feedback active noise reduction can correct the emitted anti-phase wave in a timely manner according to the real-time noise reduction effect, while feedforward active noise reduction does not have this function.

[0101] Since the sleeping postures of different users are different, and the sleeping postures of users will also change during sleep, corresponding noise reduction strategies can be adopted for different sleeping postures. For different noise reduction methods, the noise reduction strategies are also different. For example, when the active noise reduction method is adopted, the noise reduction interval during noise reduction can be determined according to the leaning area of the human head on the noise reduction device, and then the anti-phase sound corresponding to the external noise is emitted through the audio playback component in the corresponding area to achieve noise reduction.

[0102] In some embodiments, the noise reduction device includes a preset noise reduction area, and a plurality of audio playback components are arranged in the preset noise reduction area. The method of "controlling the noise reduction device to play the anti-phase sound of external noise according to the contact information" may include:

[0103] Determine the target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact information;

[0104] Determine the target audio playback component corresponding to the human body during noise reduction from the audio playback components arranged in the target noise reduction interval according to the contact information;

[0105] Control the target audio playback component to play the anti-phase sound.

[0106] For example, the entire noise reduction device can be set as the preset noise reduction area, the left area of the noise reduction device can be set as the first noise reduction interval, the middle area can be set as the second noise reduction interval, and the right area can be set as the third noise reduction interval. Then the target noise reduction interval can be selected according to the contact information. Then the target audio playback component is determined from the audio playback components arranged in the target noise reduction interval according to the contact information.

[0107] Among them, the audio playback component can be in various forms. For example, the audio playback component can be a speaker or the sound - producing part in the speaker. In some embodiments, the audio playback component can be a flexible speaker, which is a speaker that still maintains mechanical stability under bending conditions. Traditional rigid speakers usually include structures such as frames and metals that are not easily deformed, and when installed in a noise - reduction device, they are easily sensed by the human body, bringing an unpleasant sleep experience. Different from traditional rigid speakers, the flexible speaker has an appearance similar to ordinary textile materials, can be bent and has no fixed shape. When installed in a noise - reduction device, the human body is not easily aware of it, providing active noise reduction for users without affecting their sleep due to its shape.

[0108] Since the contact information can include various types of information, when the contact information includes information about the contact position between the human body and the noise - reduction device, the area where the human body leans can be determined according to the contact position, and this area can be used as the target area. Then, in some embodiments, the method of "determining the target noise - reduction area corresponding to the human body from the preset noise - reduction area according to the contact information" can include:

[0109] Obtain the contact position information of the contact surface between the noise - reduction device and the human body according to the contact information;

[0110] Determine the target noise - reduction area corresponding to the human body from the preset noise - reduction area according to the contact position information.

[0111] Among them, the contact information is obtained from the pressure distribution information, and the contact information can include the position information of the contact between the human body and the noise - reduction device, the height information of the human body from the lower surface of the noise - reduction device, and the area information of the contact surface, etc.

[0112] Among them, the contact position information of the contact surface between the noise - reduction device and the human body can be the contact position information of the body part of the human body and the contact surface of the noise - reduction device. For example, it can be the position information of the body part of the human body leaning on the noise - reduction device.

[0113] Among them, the preset noise - reduction area can be the entire noise - reduction device, and the target noise - reduction area corresponding to the human body can be the partial area where the body part of the human body leans on the noise - reduction device.

[0114] For example, when the user's head leans on the left area of the noise - reduction device, the area position information where the head leans can be used as the contact position information. Then, according to this position information, the left area of the noise - reduction device can be determined as the target noise - reduction area corresponding to the human body.

[0115] In some embodiments, a preset noise reduction region may be divided into multiple noise reduction intervals. Since a loudspeaker may include multiple sound - generating parts, when a loudspeaker is provided in each noise reduction interval and each sound - generating part is used as an audio playback component, the target noise reduction interval may be determined according to the contact position information, and the loudspeaker in this interval is used as the target noise reduction device. Then, a target sound - generating part is further selected from the sound - generating parts included in the loudspeaker as the target audio playback component. Then, "determining the target noise reduction interval corresponding to the human body from the preset noise reduction region according to the contact position information" may include:

[0116] Dividing the preset noise reduction region into multiple noise reduction intervals according to a preset interval;

[0117] Determining the target noise reduction interval from the multiple noise reduction intervals according to the contact position information.

[0118] For example, the entire surface of the noise reduction device can be divided into two, three or more noise reduction intervals by the classification rules of sleeping postures. For example, when the sleeping postures include sleeping in the middle, sleeping on the left side, sleeping on the right side, sleeping on the left end, sleeping on the right end, the entire area of the noise reduction device can be divided into five noise reduction intervals according to different intervals, and can be specifically set according to requirements. Then, according to the contact position between the head and the noise reduction device, it can be determined which noise reduction interval the head is in, and this noise reduction interval is set as the target noise reduction interval.

[0119] In some embodiments, the preset position may be set as the middle area of the noise reduction device, the first noise reduction interval is the right area of the noise reduction device, and the second noise reduction interval is the right area of the noise reduction device. Then, "determining the target noise reduction interval corresponding to the human body from the preset noise reduction region according to the contact position information" may include:

[0120] When the contact position information indicates that the human body position is to the left of the preset position, determining the first noise reduction interval as the target noise reduction interval;

[0121] When the contact position information indicates that the human body position is to the right of the preset position, determining the second noise reduction interval as the target noise reduction interval;

[0122] When the contact position information indicates that the human body is at the preset position, determining the first noise reduction interval and the second noise reduction interval as the target noise reduction intervals.

[0123] For example, as Figure 8 shown, when the user's head is leaning on the middle area of the noise reduction device, the user is sleeping flat in the middle, and the noise received by the user's left and right ears is almost the same. Bilateral noise reduction can be achieved simultaneously through the loudspeakers in the left and right areas. Then, the left and right areas are determined as the target noise reduction intervals, and the left and right ears of the user are noise - reduced through the loudspeakers on the left and right sides.

[0124] When the position where the user's head leans is to the left of the middle area, the user is lying flat on the left side. It can be determined that the left area is the main noise reduction area. At this time, the user's right ear receives more noise and the left ear receives relatively less noise. By reducing the noise of the right ear, the noise reduction effect can also be achieved. Then, the single-sided noise reduction of the user's right ear can be achieved through the speaker in the left area. When the position where the user's head leans is to the right of the middle area, the user is lying flat on the right side. Similarly, it can be determined that the right area is the main noise reduction area, and the single-sided noise reduction of the user's left ear can be achieved through the speaker in the right area.

[0125] Since there are multiple audio playback components arranged in the preset noise reduction area, there are also multiple audio playback components corresponding to different intervals. After determining the target noise reduction interval, the target audio playback component can be determined from the audio playback components in the corresponding interval. For example, setting many audio playback components in the noise reduction device means that there are multiple audio playback components in the left area and multiple audio playback components in the right area. Then, it is necessary to further select the target audio playback component within the corresponding target interval.

[0126] In some embodiments, the method of "determining the target audio playback component corresponding to the human body during noise reduction from the audio playback components arranged in the target noise reduction interval according to the contact information" may include:

[0127] Obtaining the height information of the human body relative to the plane where the lower surface of the noise reduction device is located according to the contact information;

[0128] Determining the target audio playback component corresponding to the human body during noise reduction from the audio playback components arranged in the target noise reduction interval according to the height information.

[0129] In some embodiments, the height information may be the height difference between the body part of the human body and the plane where the lower surface of the noise reduction device is located. For example, it may be the height difference between the position where the ear of the human body is located and the lower surface of the noise reduction device. The height information is not limited to the height difference between the human body and the plane where the lower surface of the noise reduction device is located. It may also be the height difference between the human body and the upper surface of the noise reduction device, or any relative height difference between the body part of the human body and the noise reduction device when the human body leans on the noise reduction device.

[0130] For example, there are many audio playback components provided in the entire noise reduction device, that is to say, different audio playback components are provided according to the height of the noise reduction device. When a person leans on the noise reduction device, since the person has weight by himself, the noise reduction device will deform, and then the body parts of the person may sink into the noise reduction device. For example, the ears of the person may sink into the depression of the noise reduction device. The principle of active noise reduction is to emit the anti-phase sound of external noise through the audio playback components to cancel the noise and achieve noise reduction. Then, the component closest to the ear can be selected according to the height of the ear to transmit the anti-phase sound to obtain a better noise reduction effect.

[0131] In some embodiments, different height intervals can be divided according to the overall height of the noise reduction device, the corresponding height interval is selected as the target height interval according to the height of the ear, and then the target audio playback component is selected from the corresponding audio components in the target height interval. The method of "determining the target audio playback component corresponding to the human body during noise reduction from the audio playback components provided in the target noise reduction interval according to the height information" may include:

[0132] The target noise reduction interval is divided into multiple height intervals according to a preset height interval;

[0133] The target height interval is determined from the multiple height intervals according to the height information;

[0134] The audio playback component provided in the target height interval is used as the target audio playback component.

[0135] In some embodiments, a first audio playback component, a second audio playback component, and a third audio playback component are provided in the target noise reduction interval, and the height differences between the first audio playback component, the second audio playback component, and the third audio playback component and the plane where the lower surface of the noise reduction device is located increase in sequence. The method of "determining the target audio playback component corresponding to the human body during noise reduction from the audio playback components provided in the target noise reduction interval according to the height information" may include:

[0136] When the height information is that the height difference between the human body and the plane where the lower surface of the noise reduction device is located is less than a first preset height, it is determined that the first audio playback component is the target audio playback component;

[0137] When the height information is that the height difference between the human body and the plane where the lower surface of the noise reduction device is located is greater than the first preset height and less than a second preset height, it is determined that the second audio playback component is the target audio playback component, where the second preset height is greater than the first preset height;

[0138] When the height information is that the height difference between the human body and the plane where the noise reduction device is located is greater than the second preset height, it is determined that the third audio playback component is the target audio playback component.

[0139] For example, according to the different sleeping postures of the user, the height difference between the user's ear and the lower surface of the noise reduction device can also be divided into multiple types. For example, it can be divided into high, medium, and low. The height difference below the first preset height is taken as the low interval, the height difference within the interval between the first preset height and the second preset height is taken as the medium interval, and the height difference above the second preset height is taken as the high interval. Then, the corresponding high interval can be selected according to the different height differences, and the audio playback component set in the corresponding interval is set as the target playback component. For example, when it is determined that it is in the medium interval according to the height of the ear, the second audio playback component corresponding to the medium interval is taken as the target audio playback component.

[0140] It can be understood that it can not only be divided into three intervals of high, medium, and low, but also be divided into five intervals of high, slightly high, medium, slightly low, and low, or even more intervals. Correspondingly, the number of audio playback components set in each interval is not limited either. Specifically, it can all be set according to actual needs.

[0141] Since in the embodiments of the present application, by setting multiple noise reduction intervals, the noise reduction interval is selected according to the user's sleeping posture and then the corresponding audio playback component is selected according to the height information of the user's body part, it is possible to select a suitable noise reduction method from unilateral noise reduction and bilateral noise reduction, which improves the flexibility of the control method of the noise reduction device.

[0142] During sleep, a person's sleeping posture changes in real time. When the sleeping posture changes, the contact position and height information of the human body may also change accordingly. Then, if only the target audio playback component is used for noise reduction at this time, the noise reduction effect may be poor. Then, all the remaining audio playback components in the target noise reduction interval are taken as auxiliary playback components. When it is detected that a person's sleeping posture changes, the target audio playback component mainly emits an anti-phase sound, and the auxiliary playback components can also emit an anti-phase sound assistively to improve the noise reduction effect.

[0143] Then, in some embodiments, after determining the target audio playback component, the method of "determining the target audio playback component corresponding to the human body during noise reduction from the audio playback components set in the target noise reduction interval according to the contact information" may further include:

[0144] Taking the other audio playback components set in the target noise reduction interval as auxiliary playback components;

[0145] When it is determined according to the pressure distribution information that the sleeping posture of the human body changes, controlling the target audio playback component and the auxiliary playback components to play external noise.

[0146] For example, after determining the target audio playback component, the remaining audio playback components are used as auxiliary playback components. If the pressure distribution information detected by the noise reduction device changes, the change in the user's sleeping position can also be obtained by inputting the pressure distribution information into the sleeping position classification model. Then, according to the change in the user's sleeping position, the target audio playback component and the auxiliary playback component are controlled to perform noise reduction. For instance, originally the user was sleeping flat on the left side, and after the sleeping position changes, the user is more inclined to sleep flat on the left side. At this time, the noise reduction effect brought by the target audio playback component playing the anti-phase sound is not as good as before the sleeping position change. Then, by also playing the anti-phase sound through the auxiliary playback component, the problem of the deteriorated noise reduction effect caused by the sleeping position change can be solved, bringing a good noise reduction experience to the user.

[0147] After determining the target audio playback component, the external noise around the environment where the noise reduction device is located can be obtained through the audio collection component set in the noise reduction device, and the anti-phase sound corresponding to the external noise can be obtained. The target audio playback component is controlled to emit the anti-phase sound to cancel the external noise and achieve noise reduction.

[0148] The control method of the noise reduction device provided by the embodiments of the present application can detect the pressure distribution information of the contact surface when an object contacts the noise reduction device; when it is determined according to the pressure distribution information that a human body contacts the noise reduction device, the contact information between the human body and the noise reduction device is obtained according to the pressure distribution information; and the anti-phase sound of the external noise is played by controlling the noise reduction device according to the contact information to achieve noise reduction.

[0149] Since the embodiments of the present application turn on noise reduction when it is detected that a human body contacts the noise reduction device, and control different audio playback components to play the anti-phase sound according to the contact information between the human body and the noise reduction device, the noise reduction device can perform noise reduction flexibly according to different contact situations between the human body and the noise reduction device.

[0150] According to the method described in the above embodiments, the following will give further detailed examples.

[0151] Please refer to Figure 9 , Figure 9 which is another schematic flowchart of the control method of the noise reduction device provided by the embodiments of the present application. The control method of the noise reduction device may include:

[0152] 201. Detect the pressure distribution information of the contact surface when an object contacts the noise reduction device.

[0153] When a human body or an object contacts the noise reduction device, the noise reduction device can detect the pressure exerted by the human body or the object on the noise reduction device. Since this pressure is not a single-point pressure, but the pressure at multiple points distributed over the entire plane of the surface of the noise reduction device. Then, according to the pressure magnitudes of different points and the positions where different points are located, the pressure distribution information corresponding to the pressure can be obtained. For example Figure 1As shown in the figure, a fabric pressure sensor is provided on the surface of the noise reduction device. Since there are dense sensitive elements on the fabric pressure sensor, when a human body or an object contacts the fabric pressure sensor, the pressure distribution information can be obtained through the force conditions on the sensitive elements.

[0154] 202. When it is determined that the human body contacts the noise reduction device according to the pressure distribution information, obtain the contact information between the human body and the noise reduction device according to the pressure distribution information.

[0155] Since the force conditions on the sensitive elements are different when the human body and an object contact the noise reduction device, it can be determined whether the human body contacts the noise reduction device according to the pressure distribution information. When it is determined that the human body contacts according to the pressure distribution information, since the force conditions on the sensitive elements are also different when the human body is in different sleeping postures, the pressure distribution information can be input into the sleeping posture classification model to distinguish the sleeping posture of the user. When the sleeping posture of the human body is flat sleeping, then determine the contact information between the human body and the noise reduction device according to the pressure distribution information and control noise reduction. When the sleeping posture of the human body is side lying, no noise reduction is performed.

[0156] Among them, the sleeping posture classification model is trained through a large number of labeled samples, and the model obtained in the training stage classifies the pressure distribution diagrams of different sleeping postures. There can be multiple sleeping postures, for example, they can be non-contact, side sleeping, centered flat sleeping, left flat sleeping, right flat sleeping and other sleeping postures. The height of the user's ears in the sleeping posture can be classified according to the size of the noise reduction device, for example, it can be divided into multiple categories such as high, medium-high, medium, medium-low, low, etc.

[0157] Since it is possible to determine whether to turn on noise reduction according to the sleeping posture. For example, when there is no contact and the user is side lying, no contact information is obtained and no noise reduction is turned on. When the user is flat sleeping, then further select a noise reduction strategy according to the contact information of the user. On the one hand, it facilitates the use of the user, and automatic noise reduction can be realized without the user manually turning on the noise reduction. On the other hand, automatic noise reduction reduces the power consumption brought by manual noise reduction.

[0158] In the traditional noise reduction technology, no matter what sleeping posture the user is in, the user manually turns on the noise reduction, and the user cannot achieve noise reduction when side lying, which will instead bring noise to the user. It can be seen that in the embodiment of the present application, the noise reduction is automatically turned on when the user is flat sleeping, and the noise reduction can be turned off when the user's sleeping posture changes to side lying, which not only prolongs the service time of the noise reduction device, but also improves the user experience.

[0159] 203. Obtain the contact position information of the contact surface between the noise reduction device and the human body according to the contact information, and determine the target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact position information.

[0160] When an object or a human body leans on the noise reduction device, due to differences in shape, weight, etc., the pressure distribution information of the object and the human body is different. Then, based on the pressure distribution information, it can be determined whether it is a human body or an object in contact with the noise reduction device. Further, it can also be determined which body part of the human body is in contact with the noise reduction device. For example, it can be determined that a person's head is leaning on the noise reduction device, and specific body parts such as the person's ears and the back of the head can also be determined based on the pressure distribution information.

[0161] After obtaining the contact position information from the pressure distribution information, since the contact information includes the contact position information of the contact surface between the body part of the human body and the noise reduction device, the interval where the body part of the human body leans can be determined according to the contact position, and this interval is used as the target interval.

[0162] For example, when the user's sleeping position is lying flat in the middle, it is obtained from the contact information that the user's head is leaning on the middle area of the noise reduction device. Then, both the left and right noise reduction intervals divided by the noise reduction device can be used as the target noise reduction intervals, and active noise reduction is performed on both sides; when the user's sleeping position is lying flat on the left, it is obtained that the user's head is leaning on the left area of the noise reduction device, and the left noise reduction interval is used as the target noise reduction interval, and left-side active noise reduction is turned on; when the user's sleeping position is lying flat on the right, it is obtained that the user's head is leaning on the right area of the noise reduction device, and the right noise reduction interval is used as the target noise reduction interval, and right-side active noise reduction is turned on.

[0163] 204. Obtain the height information of the human body relative to the plane of the lower surface of the noise reduction device according to the contact information, and determine the target audio playback component corresponding to the human body during noise reduction from the audio playback components arranged in the target noise reduction interval according to the height information.

[0164] After obtaining the contact position information from the pressure distribution information, since the contact information includes the height information of the body part of the human body relative to the plane of the lower surface of the noise reduction device, the target audio playback component can be determined from the audio playback components arranged in the target noise reduction interval according to the height information.

[0165] For example, as Figure 1 shown, there are two flexible speakers inside the noise reduction device, and these two flexible speakers are respectively arranged in the left noise reduction interval and the right noise reduction interval of the noise reduction device. As Figure 10 shown, there are three sound-emitting parts in each flexible speaker, and each sound-emitting part is used as an audio playback component. When the target noise reduction interval is determined to be the left noise reduction interval, a sound-emitting part can be selected from the flexible speaker arranged in the left noise reduction interval according to the height information of the body part of the human body as the main sound-emitting unit for emitting the anti-phase sound of the external noise.

[0166] When a human body leans on the noise reduction device, the noise reduction device deforms due to its own weight, and the ear of the human body will sink into the depression of the noise reduction device. The principle of active noise reduction is to cancel the noise by emitting the inverse sound of the external noise through the audio playback component. Then, the sound emitting part closest to the ear can be selected according to the height of the ear to transmit the inverse sound, so as to obtain a better noise reduction effect.

[0167] For example, when it is determined that the sound emitting part closest to the ear is the second sound emitting part according to the height difference between the ear of the user and the lower surface of the noise reduction device, the second sound emitting part can be used as the target audio playback component.

[0168] 205. Collect the external noise of the noise reduction device, and control the target audio playback component to emit the inverse sound corresponding to the external noise to achieve noise reduction.

[0169] Such as Figure 1 As shown, a microphone is also arranged inside the noise reduction device. The microphone is used as an audio collection component to collect the external noise of the environment where the noise reduction device is located. Then, since the sound emitting part closest to the ear is the second sound emitting part, after certain signal compensation and feedforward calculation, the second sound emitting part is controlled to be the sound emitting main body to emit the inverse sound. After the inverse sound and the external noise cancel each other out, the noise reduction effect is finally achieved.

[0170] During sleep, a person's sleeping position changes in real time. When the sleeping position changes, the contact position and height information of the human body may also change accordingly. At this time, if only the target audio playback component is used for noise reduction, the noise reduction effect may be poor. Then, all the remaining audio playback components in the target noise reduction interval are used as auxiliary playback components. When it is detected that a person's sleeping position changes, the target audio playback component mainly emits the inverse sound, and the auxiliary playback component can also emit the inverse sound assistively to improve the noise reduction effect.

[0171] For example, after determining the target sound emitting part, the remaining sound emitting parts in the flexible speaker are used as auxiliary sound emitting parts. If the pressure distribution information detected by the fabric pressure sensor changes, the pressure distribution information is input into the sleeping position classification model to determine the change of the user's sleeping position. Then, according to the change of the user's sleeping position, the target sound emitting part and the auxiliary sound emitting part are controlled to emit the inverse sound simultaneously for noise reduction. For example, originally the user was sleeping flat on the left, and after the sleeping position changed, the user was more inclined to sleep flat on the left. At this time, the noise reduction effect brought by the target sound emitting part playing the inverse sound is not as good as before the sleeping position changed. Then, by also playing the inverse sound through the auxiliary sound emitting part, the problem of the deteriorated noise reduction effect caused by the change of the sleeping position can be solved, bringing a good noise reduction experience to the user.

[0172] The control method of the noise reduction device provided by the embodiments of the present application detects the pressure distribution information of the contact surface when an object contacts the noise reduction device. When it is determined that a human body contacts the noise reduction device according to the pressure distribution information, the contact information between the human body and the noise reduction device is obtained according to the pressure distribution information, the contact position information of the contact surface between the noise reduction device and the human body is obtained according to the contact information, the target noise reduction interval corresponding to the human body is determined from the preset noise reduction area according to the contact position information, the height information of the human body relative to the plane where the lower surface of the noise reduction device is located is obtained according to the contact information, and the target audio playback component corresponding to the human body during noise reduction is determined from the audio playback components arranged in the target noise reduction area according to the height information. The external noise of the environment where the noise reduction device is located is collected, and the target audio playback component is controlled to emit an anti-phase sound corresponding to the external noise to achieve noise reduction.

[0173] Since the embodiments of the present application turn on noise reduction when it is detected that a human body contacts the noise reduction device, and control different audio playback components to play anti-phase sounds according to the contact information between the human body and the noise reduction device, the noise reduction device can perform flexible noise reduction according to different contact situations between the human body and the noise reduction device.

[0174] To facilitate better implementation of the control method of the noise reduction device provided by the embodiments of the present application, the embodiments of the present application also provide a control device based on the above control method. The meanings of the nouns are the same as those in the above control method, and the specific implementation details can be referred to the description in the method embodiments.

[0175] Please refer to Figure 11 , Figure 11 which is a schematic diagram of the modules of the control device 300 provided by the embodiments of the present application. Specifically, the control device 300 includes an acquisition module 301, a determination module 302, and a noise reduction module 303.

[0176] The acquisition module 301 is configured to detect the pressure distribution information of the contact surface when an object contacts the noise reduction device;

[0177] The determination module 302 is configured to, when it is determined that a human body contacts the noise reduction device according to the pressure distribution information, obtain the contact information between the human body and the noise reduction device according to the pressure distribution information;

[0178] The noise reduction module 303 is configured to control the noise reduction device to play an anti-phase sound of the external noise according to the contact information to achieve noise reduction.

[0179] In some embodiments, the noise reduction device includes a preset noise reduction area, and a plurality of audio playback components are arranged in the preset noise reduction area. The noise reduction strategy includes the target audio playback component used during noise reduction. The noise reduction module 303 is configured to:

[0180] Determine the target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact information;

[0181] Determine a target audio playback component corresponding to the human body during noise reduction from the audio playback components provided in the target noise reduction range based on the contact information;

[0182] Control the target audio playback component to play out-of-phase sound.

[0183] In some embodiments, the noise reduction module 303 is configured to:

[0184] Obtain contact position information of the contact surface between the noise reduction device and the human body based on the contact information;

[0185] Determine a target noise reduction range corresponding to the human body from the preset noise reduction area based on the contact position information.

[0186] In some embodiments, the noise reduction module 303 is configured to:

[0187] Obtain height information of the plane where the human body is located relative to the lower surface of the noise reduction device based on the contact information;

[0188] Determine a target audio playback component corresponding to the human body during noise reduction from the audio playback components provided in the target noise reduction range based on the height information.

[0189] In the control device provided in the embodiments of the present application, the acquisition module 301 can detect the pressure distribution information of the contact surface when an object contacts the noise reduction device; the determination module 302 can, when it is determined that the human body contacts the noise reduction device according to the pressure distribution information, obtain the contact information between the human body and the noise reduction device according to the pressure distribution information; the noise reduction module 303 can control the noise reduction device to play out-of-phase sound of external noise according to the contact information to achieve noise reduction.

[0190] Since the embodiments of the present application turn on noise reduction only when it is detected that the human body contacts the noise reduction device, and control different audio playback components to play out-of-phase sound according to the contact information between the human body and the noise reduction device, the noise reduction device can perform flexible noise reduction according to different contact situations between the human body and the noise reduction device.

[0191] The embodiments of the present application further provide a computer-readable storage medium, which stores a computer program. When the computer program runs on a computer, the computer is caused to execute the control method of the noise reduction device in any of the above embodiments, such as:

[0192] Detect the pressure distribution information of the contact surface when an object contacts the noise reduction device;

[0193] When it is determined that the human body contacts the noise reduction device according to the pressure distribution information, obtain the contact information between the human body and the noise reduction device according to the pressure distribution information;

[0194] Control the noise reduction device to play the inverted sound of external noise according to the contact information to achieve noise reduction.

[0195] In the embodiments of the present application, the computer-readable storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM), etc.

[0196] The term "module" used herein can be regarded as a software object executed on the computing system. Different components, modules, engines, and services described herein can be regarded as implementation objects on the computing system. The devices and methods described herein are preferably implemented in software, but can also be implemented in hardware, which are all within the protection scope of the present application.

[0197] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0198] It should be noted that for the control method of the noise reduction device in the embodiments of the present application, those of ordinary skill in the art can understand that all or part of the process of implementing the control method of the noise reduction device in the embodiments of the present application can be completed by controlling relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, such as stored in the memory of an electronic device and executed by at least one processor in the electronic device. During the execution process, it may include the process of the embodiments of the control method of the noise reduction device. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, etc.

[0199] For the noise reduction device in the embodiments of the present application, its various functional modules can be integrated in a processing chip, or each module can exist physically alone, or two or more modules can be integrated in one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk, or an optical disk, etc.

[0200] The above has introduced in detail the noise reduction device and its control method provided in the embodiments of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A noise reduction device, characterized in that, Comprising: A pressure sensing component for detecting pressure distribution information of a contact surface when an object contacts the noise reduction device; An audio collection component for collecting external noise of the noise reduction device. The noise reduction device is provided with a preset noise reduction area, and a plurality of audio playback components are arranged in the preset noise reduction area; An audio playback component for playing an anti-phase sound corresponding to the external noise; A processor, the processor is respectively connected to the pressure sensing component, the audio collection component, and the audio playback component. The processor is used for: Obtaining the pressure distribution information detected by the pressure sensing component; When it is determined according to the pressure distribution information that a human body contacts the noise reduction device, obtaining contact information between the human body and the noise reduction device according to the pressure distribution information; Controlling the audio playback component to play the anti-phase sound according to the contact information. Among them, according to the contact information, a target noise reduction interval corresponding to the human body is determined from the preset noise reduction area, and according to the contact information, a target audio playback component corresponding to the human body during noise reduction is determined from the audio playback components arranged in the target noise reduction interval, including obtaining height information of the human body relative to a plane where the lower surface of the noise reduction device is located according to the contact information, and determining a target audio playback component corresponding to the human body during noise reduction from the audio playback components arranged in the target noise reduction interval according to the height information, and controlling the target audio playback component to play the anti-phase sound to achieve noise reduction.

2. The noise reduction device according to claim 1, wherein The processor is used for: Obtaining contact position information of a contact surface between the noise reduction device and the human body according to the contact information; Determining a target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact position information.

3. The noise reduction device according to claim 2, wherein The processor is used for: Dividing the preset noise reduction area into a plurality of noise reduction intervals according to a preset interval; Determining a target noise reduction interval from the plurality of noise reduction intervals according to the contact position information.

4. The noise reduction device according to claim 3, characterized in that, The processor is used for: Dividing the target noise reduction interval into a plurality of height intervals according to a preset height interval; Determining a target height interval from the plurality of height intervals according to the height information; Regarding the audio playback components arranged in the target height interval as target audio playback components.

5. The noise reduction device according to claim 4, characterized in that, The processor is further used for: Regarding other audio playback components arranged in the target noise reduction interval as auxiliary playback components; When it is determined according to the pressure distribution information that the sleeping posture of the human body changes, controlling the target audio playback component and the auxiliary playback component to play the external noise.

6. The noise reduction device according to claim 1, characterized in that The processor is further used for: Inputting the pressure distribution information into a sleeping posture classification model to obtain the sleeping posture of the human body; When the sleeping posture of the human body is a preset sleeping posture, determining contact information between the human body and the noise reduction device according to the pressure distribution information.

7. A control method for a noise reduction device, characterized in that, Comprising: Detecting pressure distribution information of a contact surface when an object contacts the noise reduction device. The noise reduction device is provided with a preset noise reduction area, and a plurality of audio playback components are arranged in the preset noise reduction area; When it is determined according to the pressure distribution information that the human body is in contact with the noise reduction device, contact information between the human body and the noise reduction device is obtained according to the pressure distribution information; The noise reduction device is controlled to play the inverted sound of external noise according to the contact information. Among them, according to the contact information, a target noise reduction interval corresponding to the human body is determined from the preset noise reduction area, and according to the contact information, a target audio playback component corresponding to the human body during noise reduction is determined from the audio playback components arranged in the target noise reduction interval, including obtaining height information of the human body relative to the plane of the lower surface of the noise reduction device according to the contact information, and determining the target audio playback component corresponding to the human body during noise reduction from the audio playback components arranged in the target noise reduction interval according to the height information, and controlling the target audio playback component to play the inverted sound to achieve noise reduction.

8. The control method according to claim 7, wherein The determining the target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact information includes: Obtaining contact position information of the contact surface between the noise reduction device and the human body according to the contact information; Determining the target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact position information.

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