CN114694626A

CN114694626A - Noise reduction device and control method thereof

Info

Publication number: CN114694626A
Application number: CN202011625633.3A
Authority: CN
Inventors: 王文东
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-07-01

Abstract

According to the embodiment of the application, the pressure distribution information of the contact surface when an object is in contact with the noise reduction device is detected through the pressure sensing assembly; when the human body is determined to be in contact with the noise reduction device according to the pressure distribution information, acquiring contact information between the human body and the noise reduction device according to the pressure distribution information; and controlling an audio playing component of the noise reduction device to play the reversed-phase sound according to the contact information so as to realize noise reduction. According to the embodiment of the application, when the contact between the human body and the noise reduction device is detected, the noise reduction device is started again to reduce noise, and different audio playing components are controlled to play reversed-phase sound according to the contact information between the human body and the noise reduction device, so that the noise reduction device can flexibly reduce noise according to the difference of the contact conditions between the human body and the noise reduction device.

Description

Noise reduction device and control method thereof

Technical Field

The application relates to the technical field of audio processing, in particular to a noise reduction device and a control method thereof.

Background

With the rapid development of society, the phenomenon of noise pollution in life is increasingly aggravated, and serious noise can influence the sleep quality of people. To improve sleep quality, users often use noise reduction devices to eliminate the effects of noise on sleep. However, in the related art, the conventional noise reduction apparatus has a problem of poor flexibility in noise reduction.

Disclosure of Invention

The embodiment of the application provides a noise reduction device and a control method thereof, which can effectively improve the flexibility of the noise reduction device in noise reduction.

In a first aspect, an embodiment of the present application provides a noise reduction apparatus, including:

the pressure sensing assembly is used for detecting the pressure distribution information of a contact surface when an object is in contact with the noise reduction device;

the audio collection component is used for collecting external noise of the noise reduction device;

the audio playing component is used for playing the reverse phase sound corresponding to the external noise;

the processor is respectively connected with the pressure sensing assembly, the audio collecting assembly and the audio playing assembly, and is used for:

acquiring the pressure distribution information detected by the pressure sensing assembly;

when the human body is determined to be in contact with the noise reduction device according to the pressure distribution information, acquiring contact information between the human body and the noise reduction device according to the pressure distribution information;

and controlling the audio playing component to play the reversed-phase sound according to the contact information so as to realize noise reduction.

In a second aspect, an embodiment of the present application provides a method for controlling a noise reduction apparatus, including:

detecting pressure distribution information of a contact surface when an object is in contact with the noise reduction device;

and controlling the noise reduction device to play the reverse sound of the external noise according to the contact information so as to realize noise reduction.

According to the embodiment of the application, the pressure distribution information of the contact surface when an object is in contact with the noise reduction device is detected through the pressure sensing assembly; when the human body is determined to be in contact with the noise reduction device according to the pressure distribution information, acquiring contact information between the human body and the noise reduction device according to the pressure distribution information; and controlling an audio playing component of the noise reduction device to play the reversed-phase sound according to the contact information so as to realize noise reduction.

Because this application embodiment opens again when detecting human and falling the device contact of making an uproar and fall and make an uproar, and fall the device and can fall the device and make an uproar according to the difference of the human and the device contact condition of making an uproar and fall the device and flexibly fall the noise according to the human different audio playback components broadcast inverted sound of contact information control between the device of making an uproar.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of a noise reduction device according to an embodiment of the present application.

FIG. 2 is a pressure distribution diagram when no object is in contact with the noise reducer according to an embodiment of the present disclosure.

FIG. 3 is a first pressure profile of an object in contact with a noise reducer according to embodiments of the present disclosure.

FIG. 4 is a second pressure profile of an object in contact with a noise reducer according to embodiments of the present disclosure.

Fig. 5 is a schematic flowchart of a control method of a noise reduction apparatus according to an embodiment of the present application.

Fig. 6 is a schematic flow chart of controlling noise reduction according to sleep postures according to an embodiment of the present application.

Fig. 7 is a schematic flow chart for confirming a sleeping posture according to pressure distribution information according to an embodiment of the present application.

Fig. 8 is a schematic flow chart of controlling single-sided and double-sided noise reduction according to an embodiment of the present application.

Fig. 9 is a schematic flowchart of a method for controlling a noise reduction apparatus according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a flexible speaker provided in an embodiment of the present application.

Fig. 11 is a block diagram of a control device according to an embodiment of the present application.

Detailed Description

Referring to the drawings, wherein like reference numbers refer to like elements, the principles of the present application are illustrated as being implemented in a suitable computing environment. The following description is based on illustrated embodiments of the application and should not be taken as limiting the application with respect to other embodiments that are not detailed herein.

The embodiment of the application provides a noise reduction device, which can be realized in a hardware or software mode. The noise reduction device can comprise a pressure sensing assembly, an audio collecting assembly, an audio playing assembly and a processor.

In some embodiments, the noise reduction device may be a bedding article, such as a noise reduction pillow, which is used to support the head of a user during sleep and sleep, and to eliminate the noise of the surrounding environment, thereby providing 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 a U shape, a square body, an ellipsoid or a round body, and the material can be latex, silica gel and the like.

The pressure sensing assembly is used for detecting pressure distribution information of a contact surface when an object is in contact with the noise reduction device. For example, the pressure distribution information of the contact surface between the body part of the human body and the noise reduction device may be acquired, or the pressure distribution information of the contact surface between a certain component of the object and the noise reduction device may be acquired. For example, when the noise reduction device is a noise reduction pillow, if the head of the user contacts with the noise reduction pillow, the pressure distribution information of the contact surface when the head contacts with the noise reduction pillow can be obtained through the pressure sensor.

The pressure sensing assembly may be positioned in a variety of locations, for example, to detect contact between the noise reducer and the human body, the pressure sensing assembly may be positioned on an outer surface of the noise reducer, and in some embodiments, as shown in FIG. 1, the pressure sensor may be a flexible pressure sensor, which may also be a fabric pressure sensor. The fabric pressure sensor is provided with dense sensing elements, when a human body is in different sleeping postures, the stress conditions of the pressure sensing elements are different, and the integral stress distribution information can be used for distinguishing the sleeping postures of users.

When the fabric pressure sensor is used for acquiring the pressure distribution information, the sensor is soft and comfortable as common cloth, so that a user does not feel any discomfort during the sleeping process. The sleeping position information of the user and the height of the human ear can then be identified by using the data collected by the fabric pressure sensor. Based on the sleeping posture information of the user and the height of the human ear, whether to implement active noise reduction, for example, whether to implement active noise reduction on both sides or only on one side, can be selectively determined, and which speaker is adopted for active noise reduction is selected according to the height of the human ear. And the power consumption of the fabric pressure sensor is low. By pertinently and actively reducing noise, not only is noise superposition caused by poor noise reduction avoided, but also power consumption is effectively saved.

Wherein, the audio frequency collecting component is used for collecting the external noise of the noise reduction device. In some embodiments, the audio collection component may be a radio, microphone, or other device having audio collection capabilities. The setting can be specifically carried out according to actual requirements.

The audio playing component is used for playing the reverse sound corresponding to the external noise so as to offset the external noise. The audio playing component may have various forms, as shown in fig. 1, for example, the audio playing component may be a flexible speaker, each flexible speaker includes a plurality of sound emitting portions, and the different sound emitting portions may be controlled to emit opposite-phase sound. And when active noise reduction is carried out, the audio collection component and the audio playing component are correspondingly arranged.

When using flexible speaker to replace traditional stereoplasm speaker, at first, because flexible speaker can carry out bending folding according to the appearance design needs of making an uproar device, guaranteed the outward appearance pleasing to the eye of making an uproar device when not influencing user's sleep because of the shape. Secondly, in an open/semi-open space, the traditional loudspeaker has an acoustic short circuit phenomenon, namely, the sound emitted from the front side of the loudspeaker and the opposite-phase sound emitted from the back side of the loudspeaker are mutually offset to cause a noise elimination phenomenon, and the flexible loudspeaker has a large area and is not easy to have the acoustic short circuit phenomenon. Thirdly, as for the physical properties of the flexible loudspeaker, the flexible loudspeaker has the characteristics of low power consumption, environmental friendliness (no electromagnetic interference), simple driving and the like, and the service time of the noise reduction function is prolonged. In general, flexible speakers have the advantages of variable shape, low power consumption, and low susceptibility to acoustic shorts. The flexible loudspeaker is processed into a convex shape, so that the flexible loudspeaker is as close to the human ear as possible, a scene of a limited space of a near field is constructed, and active noise reduction with a good effect is effectively realized.

Since the traditional open space active noise reduction needs to calculate the sound field of the three-dimensional space, a large amount of computing resources and power are consumed, and correspondingly, a large amount of energy supply is also needed, and the cost is not affordable by a common terminal. In the embodiment of the application, the combination of the flexible loudspeaker and the fabric pressure sensor can be adopted, so that the active noise reduction of the open space can be realized under the conditions of lower power consumption and lower computational power.

Through the combination of flexible speaker and fabric pressure sensor, use fabric pressure sensor to obtain human head in three-dimensional space's gesture, use the flexible appearance of flexible speaker to press close to the people's ear as far as possible, through the scene of constructing such people's ear near field finite space, not only can realize opening automatically and fall the noise, make the function of falling the noise of initiative moreover and can gain better effect.

The processor is a control center of the noise reduction device, various interfaces and lines are utilized to connect various electronic elements arranged in the whole noise reduction device, and various functions are executed and data are processed by running or loading a computer program stored in a memory and calling data stored in the memory, so that the whole noise reduction device is monitored. In some embodiments, the processor is connected to the pressure sensing component, the audio collection component, and the audio playback component, respectively.

In the embodiment of the present application, the processor of the noise reduction apparatus loads instructions corresponding to one or more processes of the computer program into the memory according to the following steps, and the processor runs the computer program stored in the memory, thereby implementing various functions. The processor may be configured to:

acquiring pressure distribution information detected by a pressure sensing assembly;

When a human body or an object is in contact with the noise reduction device, the pressure sensing assembly of the noise reduction device can detect the pressure applied by the human body or the object to the noise reduction device. Since the pressure is not a single point pressure but is distributed over a plurality of points across the surface of the noise reducer. Then, based on the pressure at different points and the positions of the 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 map, such as the pressure distribution map shown in FIG. 2 when no object is in contact with the noise reducer, the first pressure distribution map shown in FIG. 3 when an object is in contact with the noise reducer, and the second pressure distribution map shown in FIG. 4 when an object is in contact with the noise reducer. And the lighter the color in the profile corresponds to the greater the pressure, the shape of the pressure profile corresponds to the shape of the object in contact with the noise reducer.

When an object or a human body leans against the noise reduction device, the pressure distribution information of the object and the human body is different due to the difference of the shape, the weight and the like. Then, according to the pressure distribution information, the processor can also obtain contact information, and according to the contact information, it can be determined that the human body or the object is in contact with the noise reduction device. In some embodiments, the processor may further determine which body part of the human body is in contact with the noise reduction device, for example, determine that the head of the human body is leaning on the noise reduction device, and determine specific body parts of the ears of the human body, the back of the head of the human body, and the like according to the pressure distribution information.

When the head of a user is leaned on the noise reducer, the fabric pressure sensor on the surface of the noise reducer can sense the pressure distribution information of the head leaned on the noise reducer. The pressure distribution information can comprehensively reflect the contact profile of the head leaning on the pillow surface and the depth of leaning. From this pressure profile information it may be determined whether the user is leaning on the noise reducer, whether the user's sleeping posture is flat or side-sleeping, and which area of the noise reducer the user's head is leaning on, and in some embodiments the processor is further configured to:

inputting the pressure distribution information into the sleeping posture classification model to obtain the sleeping posture of the human body;

and when the sleeping posture of the human body is the preset sleeping posture, determining the contact information between the human body and the pillow according to the pressure distribution information.

Because the sleeping postures of different users are different and the sleeping postures of the users can be changed in the sleeping process, corresponding noise reduction strategies can be adopted according to the different sleeping postures. For example, when the active noise reduction mode is adopted, the noise reduction interval during noise reduction can be determined according to the leaning region of the head of the human body on the noise reduction device, and then the opposite-phase sound corresponding to the external noise is emitted through the audio playing component in the corresponding region to realize noise reduction. In some embodiments, the noise reduction apparatus is provided with a preset noise reduction region, the preset noise reduction region is provided with a plurality of audio playing components, and the processor is further configured to:

determining a target noise reduction interval corresponding to the human body from a preset noise reduction area according to the contact information;

determining a target audio playing component corresponding to a human body when noise is reduced from audio playing components arranged in a target noise reduction interval according to the contact information;

and controlling the target audio playing component to play the reversed-phase sound.

For example, the whole noise reduction device may be set as a preset noise reduction region, the left region of the noise reduction device may be set as a first noise reduction region, the middle region may be set as a second noise reduction region, and the right region may be set as a third noise reduction region. The target noise reduction interval can be selected from the contact information. And determining a target audio playing component from the audio playing components arranged in the target noise reduction interval according to the contact information. And then controls the target audio playing component to play the reversed-phase sound.

Since a plurality of kinds of information may be included in the contact information, when the contact information includes information of a contact position of the human body with the noise reduction device, which section the human body leans against may be determined according to the contact position, and the section may be taken as a target section, and in some embodiments, the processor is configured to:

acquiring contact position information of a contact surface between the noise reduction device and a human body according to the contact information;

and determining a target noise reduction interval corresponding to the human body from a preset noise reduction area according to the contact position information.

For example, when the head of the user leans on the left region of the noise reduction device, the region position information on which the head leans may be regarded as the contact position information. Then, according to the position information, it can be determined that the left region of the noise reduction device is determined as the target noise reduction interval corresponding to the human body.

In some embodiments, the preset noise reduction region may be divided into a plurality of noise reduction intervals, and the processor may be configured to:

dividing a preset noise reduction area into a plurality of noise reduction intervals according to a preset interval;

and determining a target noise reduction interval from a plurality of noise reduction intervals according to the contact position information.

For example, the entire surface of the noise reduction device may be divided into two, three or more noise reduction regions by the classification rule of the sleeping posture. For example, when the sleeping postures include middle sleeping, left sleeping, right sleeping, left sleeping and right sleeping, the whole area of the noise reduction device can be divided into five noise reduction intervals according to different intervals, and the noise reduction intervals can be set according to requirements. Then, which noise reduction section the head is in can be determined according to the contact position between the head and the noise reduction device, and the noise reduction section is set as a target noise reduction section.

Because a plurality of audio playing components are arranged in the preset noise reduction area, the audio playing components are corresponding to different intervals. When the target noise reduction interval is determined, a target audio playing component may be determined from the audio playing components in the corresponding interval. For example, a plurality of audio playing components are provided in the noise reduction device, which means that the left region includes a plurality of audio playing components, and the right region also includes a plurality of audio playing components. Then the target audio playing component is further selected within the corresponding target interval. In some embodiments the processor is operable to:

acquiring 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 playing component corresponding to the human body when the noise is reduced from the audio playing components arranged in the target noise reduction interval according to the height information.

For example, many audio playing components are provided in the entire noise reducer, that is, different audio playing components are provided according to the height of the noise reducer. When a human body leans on the noise reducing device, the noise reducing device is deformed due to the weight of the human body, and a body part of the human body may be trapped in the noise reducing device, for example, ears of the human body may be trapped in the recesses of the noise reducing device. The principle of active noise reduction is that the audio playing component emits the inverse sound of external noise to offset the noise to reduce the noise, so that the component closest to the ear can be selected according to the height of the ear to transmit the inverse sound, and a better noise reduction effect is obtained.

In some embodiments, different height intervals may be divided according to the overall height of the noise reduction apparatus, a corresponding height interval is selected as a target height interval according to the height of the ear, and then a target audio playing component is selected from corresponding audio components in the target height interval, and the processor may be configured to:

dividing the target noise reduction interval into a plurality of height intervals according to a preset height interval;

determining a target height interval from a plurality of height intervals according to the height information;

and taking the audio playing component arranged in the target height interval as a target audio playing component.

During the sleeping process, the sleeping posture of the person can be changed in real time. When the sleeping posture changes, the contact position and height information of the human body may also change correspondingly, and the phenomenon of poor noise reduction effect can occur only when noise is reduced according to the target audio playing component. Then, the remaining audio playing components in the target noise reduction interval are all used as auxiliary playing components, when the change of the sleeping posture of a person is detected, the target audio playing components mainly emit reverse-phase sound, and the auxiliary playing components can also emit the reverse-phase sound in an auxiliary mode, so that the noise reduction effect is improved.

Then, in some embodiments, after determining the target audio playback component, the processor is further configured to:

taking other audio playing components arranged in the target noise reduction interval as auxiliary playing components;

and when the sleeping posture of the human body is determined to be changed according to the pressure distribution information, the target audio playing component and the auxiliary playing component are controlled to play external noise.

For example, after the target audio playing component is determined, the remaining audio playing components are used as auxiliary playing components. If the pressure distribution information detected by the noise reduction device changes, the change of the sleeping posture of the user can be acquired by inputting the pressure distribution information into the sleeping posture classification model. And controlling the target audio playing component and the auxiliary playing component to reduce noise according to the change of the sleeping posture of the user. For example, when the user is sleeping on the left and the user is sleeping on the left after the sleeping posture is changed, the noise reduction effect of the target audio playing component playing the reversed-phase sound is not as good as that of the target audio playing component before the sleeping posture is changed. Then, the reverse-phase sound is played through the auxiliary playing component, the problem that the noise reduction effect is poor due to the change of the sleeping posture can be solved, and good noise reduction experience is brought to a user.

Therefore, in the embodiment of the application, the pressure distribution information of the contact surface when the object is in contact with the noise reduction device is detected through the pressure sensing assembly; when the human body is determined to be in contact with the noise reduction device according to the pressure distribution information, acquiring contact information between the human body and the noise reduction device according to the pressure distribution information; and controlling an audio playing component of the noise reduction device to play the reversed-phase sound according to the contact information so as to realize noise reduction.

According to the embodiment of the application, when the contact between the human body and the noise reduction device is detected, the noise reduction device is started again to reduce noise, and different audio playing components are controlled to play reversed-phase sound according to the contact information between the human body and the noise reduction device, so that the noise reduction device can flexibly reduce noise according to the difference of the contact conditions between the human body and the noise reduction device.

In order to better implement the noise reduction device provided by the embodiment of the present application, an embodiment of the present application further provides a control method of the noise reduction device, where an execution main body of the control method of the noise reduction device may be the noise reduction device provided by the embodiment of the present application, and the noise reduction device may be implemented in a hardware or software manner. The following is a detailed description of the analysis.

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 may detect the pressure distribution information. The pressure distribution information detected by the pressure sensing assembly can be acquired. And when the human body is determined to be in contact with the noise reduction device according to the pressure distribution information, acquiring contact information between the human body and the noise reduction device according to the pressure distribution information. And then, controlling an audio playing component of the noise reduction device to play the reverse sound of the external noise according to the contact information so as to realize noise reduction.

An embodiment of the present application provides a method for controlling a noise reducer, as shown in fig. 5, where fig. 5 is a schematic flow chart of the method for controlling a noise reducer provided in the embodiment of the present application, and the method for controlling a noise reducer may include:

101. and detecting the pressure distribution information of the contact surface when the object is in contact with the noise reduction device.

When a human body or an object is in contact with the noise reduction device, the noise reduction device may detect the pressure applied by the human body or the object to the noise reduction device. Since the pressure is not a single point pressure but is distributed over a plurality of points across the surface of the noise reducer. Then, based on the pressure at different points and the positions of the 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 map, such as the pressure distribution map shown in FIG. 2 when no object is in contact with the noise reducer, the first pressure distribution map shown in FIG. 3 when an object is in contact with the noise reducer, and the second pressure distribution map shown in FIG. 4 when an object is in contact with the noise reducer. And the lighter the color in the profile corresponds to the greater the pressure, the shape of the pressure profile corresponds to the shape of the object in contact with the noise reducer.

In some embodiments, the noise reducer may include a pressure sensor, and the pressure sensor may detect a pressure applied to the noise reducer and acquire pressure distribution information corresponding to the pressure. The type of pressure sensor is not limited, for example, the pressure sensor may be a flexible pressure sensor, which may be a fabric pressure sensor.

The fabric pressure sensor adopts special yarns on materials, so that the original characteristics of the fabric are maintained, and the fabric pressure sensor has good ductility and comfort. The fabric pressure sensor can detect the pressure distribution and pressure value condition of a large area of human body, collect the sleeping posture, the pillow posture and other information of a user, and cannot bring discomfort to the user. In addition, the power consumption of the fabric pressure sensor is low, and the service life of the noise reduction device can be effectively prolonged.

102. And when the human body is determined to be in contact with the noise reduction device according to the pressure distribution information, acquiring contact information between the human body and the noise reduction device according to the pressure distribution information.

When an object or a human body leans against the noise reduction device, the pressure distribution information of the object and the human body is different due to the difference of the shape, the weight and the like. It can be determined from the pressure distribution information that the human body or the object is in contact with the noise reduction means. In some embodiments, it may be determined which body part of the human body is in contact with the noise reduction device, for example, it may be determined that the head of the human body is leaning on the noise reduction device, and it may be determined from the pressure distribution information that the specific body part is an ear of the human body, a back head of the human body, or the like.

In some embodiments, when a user's head is resting on the noise reducer, the fabric pressure sensors of the noise reducer surface may sense pressure distribution information of the head resting on the noise reducer. The pressure distribution information can comprehensively reflect the contact profile of the head leaning on the pillow surface and the depth of leaning. From this pressure distribution information, it is possible to determine whether the user leans on the noise reducing device, whether the user's sleeping posture is flat or side, and which region of the noise reducing device the user's head leans on.

When the user sleeps on the side or presses the ears when having a rest, one ear is pressed under the noise reduction device while the other ear is perpendicular to the pillow surface when sleeping on the side, so that the noise reduction effect cannot be achieved when the noise reduction is carried out, and even noise superposition can be caused. Therefore, whether noise reduction is carried out or not can be judged according to the sleeping posture of the user in the embodiment of the application. Specifically, as shown in fig. 6, when the user's sleeping posture is flat, noise reduction is controlled, and when the user is not in contact with the noise reduction device, or when the user's sleeping posture is a sleeping posture such as side sleeping, noise reduction is not performed.

The sleeping postures of the user can be judged through the pressure distribution information, and different sleeping postures correspond to different pressure distribution information. As shown in fig. 3 and 4, fig. 3 is a pressure distribution diagram of the noise reducing device when the user is sleeping flat, and fig. 4 is a pressure distribution diagram of the noise reducing device when the user is sleeping on his side. In some embodiments, the sleeping posture can be judged through a pre-trained sleeping posture classification model, the pressure distribution information is input into the sleeping posture classification model, and when the sleeping posture is determined to be the preset sleeping posture, the contact information is acquired and the noise reduction is further controlled. Before the step of obtaining the contact information between the human body and the noise reduction device according to the pressure distribution information, the method further comprises:

and when the sleeping posture of the human body is the preset sleeping posture, determining the contact information between the human body and the noise reduction device according to the pressure distribution information.

The sleeping posture classification model is trained through a large number of labeled samples, and the pressure distribution maps of different sleeping postures are classified through the model obtained in the training stage. The sleeping positions can be various, for example, the sleeping positions can be non-contact, side sleeping, middle sleeping, left sleeping, right sleeping and the like. The ear height of the user in the sleeping posture can be classified according to the size of the noise reduction device, for example, the ear height can be classified into various categories such as high, middle and low, low and the like. As shown in fig. 7, the user's sleeping posture information can be obtained by inputting the pressure distribution information into the sleeping posture classification model, and the contact information can be further obtained according to whether the user is in the preset sleeping posture or not.

According to the method and the device, whether noise reduction is started or not can be determined according to the sleeping posture, for example, when the user does not contact or sleep on one side, contact information is not acquired, noise reduction is not started, and when the user is asleep, a noise reduction strategy is further selected according to the contact information of the user. On one hand, the use of a user is facilitated, automatic noise reduction can be achieved without manually starting the noise reduction by the user, and on the other hand, the power consumption increased by manual noise reduction due to the fact that the situation is not distinguished is reduced due to automatic noise reduction.

In the conventional noise reduction technology, the noise reduction is manually started no matter what sleeping posture the user falls. However, when a user sleeps on one side, the traditional noise reduction technology cannot be realized, and noise is not reduced but brought to the user. Therefore, the noise reduction device can automatically turn on the noise reduction device when a user sleeps flat, and turn off the noise reduction device when the user sleeps to the side, so that the service time of the noise reduction device is prolonged, and the use experience of the user is improved.

103. And controlling the noise reduction device to play the reverse sound of the external noise according to the contact information so as to realize noise reduction.

There are various noise reduction modes for the noise of the environment, mainly including active noise reduction and passive noise reduction.

Passive noise reduction is a noise reduction method for blocking noise transmission or absorbing noise through materials, and can be divided into vibration reduction noise treatment, sound absorption noise treatment and sound insulation noise treatment according to the used materials and parts.

The active noise reduction means that the loudspeaker emits reverse sound of external noise, and the external noise is counteracted through the reverse sound to realize noise reduction. Active noise reduction can be classified into feedforward active noise reduction, feedback active noise reduction, and feedforward/feedback combined active noise reduction. The feedforward noise reduction mainly includes placing a microphone at a position outward of a speaker for collecting noise. Feedback noise reduction is the placement of a microphone inside a speaker, in close proximity to the sound production, to collect noise transmitted into the device. The feedback active noise reduction can correct the emitted reverse phase wave in time according to the real-time noise reduction effect, but the feedforward active noise reduction does not have the function.

Because the sleeping postures of different users are different and the sleeping postures of the users can be changed in the sleeping process, corresponding noise reduction strategies can be adopted according to the different sleeping postures. For different noise reduction modes, noise reduction strategies are different, for example, when the noise reduction mode of active noise reduction is adopted, a noise reduction interval during noise reduction can be determined according to a leaning region of the head of a human body on the noise reduction device, and then opposite-phase sound corresponding to external noise is emitted through an audio playing component in a corresponding region to realize noise reduction.

In some embodiments, the noise reduction device includes a preset noise reduction region, the preset noise reduction region is provided with a plurality of audio playing components, and the method for controlling the noise reduction device to play the inverse sound of the external noise according to the contact information may include:

For example, the whole noise reduction device may be set to a preset noise reduction region, the left region of the noise reduction device may be set to a first noise reduction region, the middle region may be set to a second noise reduction region, and the right region may be set to a third noise reduction region. The target noise reduction interval can be selected from the contact information. And determining a target audio playing component from the audio playing components arranged in the target noise reduction interval according to the contact information.

The audio playing component may include various forms, for example, the audio playing component may be a speaker, and may also be a sound emitting portion in the speaker. In some embodiments, the audio playback assembly may be a flexible speaker, which is a speaker that remains mechanically stable in bending conditions. Traditional hard speaker contains non-deformable's frame, metal isotructure usually, is sensed by the human body easily when setting up in the device of making an uproar that falls, brings not good sleep and experiences. Different from the traditional rigid loudspeaker, the appearance of the flexible loudspeaker is similar to that of a common textile material, can be bent and does not have a fixed shape, and a human body does not feel easily when the flexible loudspeaker is arranged in the noise reduction device, so that active noise reduction is provided for a user, and the sleep of the user cannot be influenced by the shape.

Since the contact information may include various information, when the contact information includes information of a contact position of the human body with the noise reduction device, which section the human body leans against may be determined according to the contact position, and the section may be taken as a target section, in some embodiments, the method of "determining a target noise reduction section corresponding to the human body from a preset noise reduction region according to the contact information" may include:

The contact information is obtained from the pressure distribution information, and the contact information may include position information of contact between the human body and the noise reduction device, height information of the human body from the lower surface of the noise reduction device, area information of a contact surface, and the like.

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 contact surface between the body part of the human body and the noise reduction device. For example, the position information of the body part of the human body leaning on the noise reduction device can be used.

The preset noise reduction region may be the whole noise reduction device, and the target noise reduction zone corresponding to the human body may be a partial region where a body part of the human body leans against the noise reduction device.

In some embodiments, the preset noise reduction region may be divided into a plurality of noise reduction sections, and since the speaker may include a plurality of sound emission portions, when each noise reduction section is provided with a speaker and each sound emission portion is used as an audio playing component, a target noise reduction section may be determined according to the contact position information, and the speaker in the section is used as a target noise reduction device. And then further selecting a target sound production part from sound production parts contained in the loudspeaker as a target audio playing component. Then "determining a target noise reduction interval corresponding to the human body from the preset noise reduction region according to the contact position information" may include:

and determining a target noise reduction interval from the plurality of noise reduction intervals according to the contact position information.

In some embodiments, the preset position may be set as a middle region of the noise reduction device, the first noise reduction region is a right region of the noise reduction device, and the second noise reduction region is a right region of the noise reduction device, and then the "determining a target noise reduction region corresponding to a human body from the preset noise reduction region according to the contact position information" may include:

when the contact position information is that the human body position is deviated to the left relative to the preset position, determining a first noise reduction interval as the target noise reduction interval;

when the contact position information indicates that the human body position is deviated from the right of the preset position, determining a second noise reduction interval as a target noise reduction interval;

and 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 target noise reduction intervals.

For example, as shown in fig. 8, when the head of the user leans against the middle area of the noise reduction device, the user is in a middle and flat sleep, the noise received by the left and right ears of the user is almost consistent, and the bilateral noise reduction can be realized through the speakers in the left and right areas at the same time, so that the left and right areas are determined as the target noise reduction intervals, and the left and right ears of the user are subjected to noise reduction through the speakers in the left and right areas.

And when the position that user's head leaned on when leaning on left for the middle zone, the user was the flat sleeping of staying on the left, can confirm the left side region and fall the area of making an uproar for mainly, and the noise that user's right ear received is more and the left ear is less relatively this moment, also can realize the noise reduction effect through falling the noise to the right ear, then can realize the unilateral of user's right ear and fall the noise through the speaker in the left side region. When the head of the user leans to the right relative to the middle area, the user is asleep at the right, the right area can be determined to be the main noise reduction area, and the single-sided noise reduction of the left ear of the user is realized through the loudspeaker of the right area.

Because a plurality of audio playing components are arranged in the preset noise reduction area, the audio playing components are corresponding to different intervals. When the target noise reduction interval is determined, a target audio playing component may be determined from the audio playing components in the corresponding interval. For example, a number of audio playing components are provided in the noise reduction apparatus, meaning that a plurality of audio playing components are included in the left region and a plurality of audio playing components are included in the right region. Then the target audio playing component is further selected within the corresponding target interval.

In some embodiments, the method for determining a target audio playing component corresponding to a human body when noise reduction is performed from audio playing components set in the target noise reduction interval according to the contact information may include:

In some embodiments, the height information may be a height difference of a body part of the human body with respect to a plane on which the lower surface of the noise reducing device is located, for example, a height difference between a position on which an ear of the human body is located and the lower surface of the noise reducing 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 reducer is located, but also can be the height difference between the human body and the upper surface of the noise reducer, and can also be any height difference capable of showing the relative height difference between the body part of the human body and the noise reducer when the human body leans against the noise reducer.

In some embodiments, the method for determining the target audio playing component corresponding to the human body when denoising is performed from the audio playing components arranged in the target denoising interval according to the height information may include:

dividing a target noise reduction interval into a plurality of height intervals according to a preset height interval;

In some embodiments, the target noise reduction interval is provided with a first audio playing component, a second audio playing component and a third audio playing component, wherein height differences between the first audio playing component, the second audio playing component and the third audio playing component and a plane where the lower surface of the noise reduction device is located are sequentially increased, and the method of determining the target audio playing component corresponding to the human body when noise is reduced from the audio playing components arranged in the target noise reduction interval according to the height information may include:

when the height information indicates that the height difference between the human body and the plane where the lower surface of the noise reduction device is located is smaller than a first preset height, determining that the first audio playing component is a target audio playing component;

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 larger than a first preset height and smaller than a second preset height, determining that the second audio playing component is a target audio playing component, wherein the second preset height is larger than the first preset height;

and when the height information indicates that the height difference between the human body and the plane where the noise reduction device is located is larger than a second preset height, determining that the third audio playing component is a target audio playing component.

For example, the height difference between the ear of the user and the lower surface of the noise reduction device can be divided into various types, such as high, middle and low, according to the sleeping posture of the user. And taking the height difference lower than the first preset height as a low interval, taking the height difference between the first preset height and the second preset height as a middle interval, and taking the height difference higher than the second preset height as a high interval. The corresponding high interval can be selected according to the different height differences, and the audio playing component set in the corresponding interval is set as the target playing component. For example, when the position in the middle zone is determined according to the height of the ear, the second audio playing component corresponding to the middle zone is used as the target audio playing component.

It can be understood that the range can be divided into three ranges of high, middle and low, five ranges of high, middle, low and low, and even more ranges. Accordingly, the number of audio playing components provided in each section is not limited. The method can be specifically set according to actual requirements.

According to the embodiment of the application, the noise reduction intervals are set, the noise reduction intervals are selected according to the sleeping postures of the user, and the corresponding audio playing assemblies are further selected according to the height information of the body parts of the user, so that a proper noise reduction mode is selected from one-side noise reduction mode and two-side noise reduction mode, and the flexibility of the control method of the noise reduction device is improved.

During the sleeping process, the sleeping posture of the person can be changed in real time. When the sleeping posture changes, the contact position and height information of the human body may also change correspondingly, and then the phenomenon of poor noise reduction effect can occur only by reducing the noise according to the target audio playing component. Then, the remaining audio playing components in the target noise reduction interval are all used as auxiliary playing components, when the change of the sleeping posture of a person is detected, the target audio playing components mainly emit reverse-phase sound, and the auxiliary playing components can also emit the reverse-phase sound in an auxiliary mode, so that the noise reduction effect is improved.

In some embodiments, after determining the target audio playing component, the method of determining the target audio playing component corresponding to the human body when noise reduction is performed from the audio playing components set in the target noise reduction interval according to the contact information may further include:

For example, after the target audio playing component is determined, the remaining audio playing components are used as auxiliary playing components. If the pressure distribution information detected by the noise reduction device changes, the change of the sleeping posture of the user can be acquired by inputting the pressure distribution information into the sleeping posture classification model. And controlling the target audio playing component and the auxiliary playing component to reduce noise according to the change of the sleeping posture of the user. For example, if the user is sleeping on the left and the user is sleeping on the left after the sleeping posture is changed, the noise reduction effect of the target audio playing component playing the reversed-phase sound is not as good as that before the sleeping posture is changed. Then, the reverse-phase sound is played through the auxiliary playing component, the problem that the noise reduction effect is poor due to the change of the sleeping posture can be solved, and good noise reduction experience is brought to a user.

After the target audio playing component is determined, external noise around the environment where the noise reduction device is located can be obtained through an audio collecting component arranged in the noise reduction device, and opposite-phase sound corresponding to the external noise is obtained. And controlling the target audio playing component to emit reverse-phase sound so as to offset external noise and reduce noise.

The control method of the noise reduction device provided by the embodiment of the application can be used for detecting the pressure distribution information of the contact surface when an object is in contact with the noise reduction device; when the human body is determined to be in contact with the noise reduction device according to the pressure distribution information, acquiring contact information between the human body and the noise reduction device according to the pressure distribution information; and controlling the noise reduction device to play the reverse sound of the external noise according to the contact information so as to realize noise reduction.

The method described in the above embodiment is further described in detail by way of example.

Referring to fig. 9, fig. 9 is another schematic flow chart of a control method of a noise reduction apparatus according to an embodiment of the present disclosure, where the control method of the noise reduction apparatus may include:

201. and detecting the pressure distribution information of the contact surface when the object is in contact with the noise reduction device.

When a human body or an object is in contact with the noise reduction device, the noise reduction device may detect the pressure applied by the human body or the object to the noise reduction device. Since the pressure is not a single point pressure but is distributed over a plurality of points across the surface of the noise reducer. Then, based on the pressure at different points and the positions of the different points, the pressure distribution information corresponding to the pressure can be obtained. As shown in fig. 1, the surface of the noise reducer is provided with fabric pressure sensors. Because the fabric pressure sensor is provided with the dense sensitive elements, when a human body or an object is in contact with the fabric pressure sensor, the pressure distribution information can be acquired through the stress condition on the sensitive elements.

202. And when the human body is determined to be in contact with the noise reduction device according to the pressure distribution information, acquiring contact information between the human body and the noise reduction device according to the pressure distribution information.

When the human body and the object are in contact with the noise reduction device, the stress conditions on the sensitive elements are different, and whether the human body is in contact with the noise reduction device or not can be judged according to the pressure distribution information. When the human body contact is determined according to the pressure distribution information, the pressure distribution information can be input into the sleep posture classification model to distinguish the sleep posture condition of the user because the stress conditions on the sensitive element are different when the human body is in different sleep postures. When the sleeping posture of the human body is flat sleeping, the contact information between the human body and the noise reduction device is determined according to the pressure distribution information, and noise reduction is controlled, and when the sleeping posture of the human body is lying on the side, noise reduction is not carried out.

The sleeping posture classification model is trained through a large number of labeled samples, and the pressure distribution maps of different sleeping postures are classified through the model obtained in the training stage. The sleeping positions can be various, for example, the sleeping positions can be non-contact, side sleeping, middle sleeping, left sleeping, right sleeping and the like. The ear height of the user in the sleeping posture can be classified according to the size of the noise reduction device, for example, the ear height can be classified into various categories such as high, middle and low, low and the like.

Because whether noise reduction is started or not can be determined according to the sleeping posture, for example, when the user is not in contact and the user sleeps on one side, contact information is not acquired, and noise reduction is not started, and when the user is in a flat sleep state, a noise reduction strategy is further selected according to the contact information of the user. On the one hand, the use of a user is facilitated, automatic noise reduction can be achieved without manually starting the noise reduction by the user, and on the other hand, the automatic noise reduction reduces power consumption caused by manual noise reduction.

In the traditional noise reduction technology, no matter what sleeping posture the user falls, the user manually starts the noise reduction, and the user cannot realize the noise reduction when sleeping on the side, but can bring noise to the user. Therefore, the noise reduction device can automatically turn on to reduce noise when a user sleeps flat, and turn off to reduce noise when the user sleeps to the side, so that the service time of the noise reduction device is prolonged, and the use experience of the user is improved.

203. And acquiring contact position information of a contact surface between the noise reduction device and the human body according to the contact information, and determining a target noise reduction interval corresponding to the human body from a preset noise reduction area according to the contact position information.

When an object or a human body leans against the noise reduction device, the pressure distribution information of the object and the human body is different due to the difference of the shape, the weight and the like. It can be determined from the pressure distribution information that the human body or the object is in contact with the noise reduction means. Further, it is also possible to determine which body part of the human body is in contact with the noise reduction device, for example, it is possible to determine that the head of the human body is leaning on the noise reduction device, and it is also possible to determine specific body parts such as the ears of the human body and the back of the head of the human body based on the pressure distribution information.

After the contact position information is acquired 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, it is possible to determine which section the body part of the human body is leaning on from the contact position, and to set the section as the target section.

For example, when the user is asleep in a centered position, the head of the user is leaned on the middle area of the noise reduction device according to the contact information. Then, the left and right noise reduction intervals divided by the noise reduction device can be used as target noise reduction intervals, and active noise reduction is carried out through the left and right sides; when the sleeping posture of the user is in a left flat sleep state, acquiring that the head of the user leans against a left area of the noise reduction device, taking a left noise reduction interval as a target noise reduction interval, and starting left active noise reduction; when the sleeping posture of the user lies on the right and lies asleep, acquiring the area of the right side of the noise reduction device, taking the noise reduction interval on the right side as a target noise reduction interval, and starting active noise reduction on the right side.

204. And acquiring 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 playing component corresponding to the human body when noise is reduced from audio playing components arranged in a target noise reduction interval according to the height information.

After the contact position information is acquired from the pressure distribution information, because the contact information contains height information of the body part of the human body relative to the plane where the lower surface of the noise reduction device is located, the target audio playing component can be determined from the audio playing components arranged in the target noise reduction interval according to the height information.

For example, as shown in fig. 1, two flexible speakers are disposed inside the noise reducer, and the two flexible speakers are disposed in the left noise reduction zone and the right noise reduction zone of the noise reducer, respectively. As shown in fig. 10, there are three sound-emitting locations in each flexible speaker, each sound-emitting location being an audio playback component. When the target noise reduction interval is determined to be the left noise reduction interval, a sound production part can be selected from the flexible loudspeaker arranged in the left noise reduction interval according to the height information of the body part of the human body and used as a main sound production unit for producing the reverse sound of the external noise.

When a human body leans on the noise reduction device, the noise reduction device is deformed due to the weight of the human body, and the ears of the human body are trapped in the recesses of the noise reduction device. The principle of active noise reduction is that the audio playing component emits the reverse sound of external noise to offset the noise to realize noise reduction, and then the sound production part closest to the ear can be selected to transmit the reverse sound through the height of the ear so as to obtain better noise reduction effect.

For example, when it is determined that the sound production portion closest to the ear is the second sound production portion according to the height difference between the ear of the user and the lower surface of the noise reduction device, the second sound production portion may be used as the target audio playing component.

205. And collecting external noise of the noise reduction device, and controlling the target audio playing component to emit reverse-phase sound corresponding to the external noise so as to realize noise reduction.

As shown in fig. 1, a microphone is further provided in the interior of the noise reducer, and the microphone serves as an audio collection unit for collecting external noise from the environment in which the noise reducer is located. Then, because the sound production part closest to the ear is the second sound production part, after certain signal compensation and feedforward calculation, the second sound production part is controlled to be used as a sound production main body to produce reverse-phase sound, and the noise reduction effect is finally realized after the reverse-phase sound and external noise are mutually offset.

For example, after the target sound emission portion is determined, the remaining sound emission portion of the flexible speaker is used as an auxiliary sound emission portion. And if the pressure distribution information detected by the fabric pressure sensor is changed, inputting the pressure distribution information into the sleeping posture classification model to determine the change of the sleeping posture of the user. And controlling the target sounding part and the auxiliary sounding part to simultaneously emit reverse sound to reduce noise according to the change of the sleeping posture of the user. For example, when the user is sleeping on the left and the user is sleeping on the left after the sleeping posture is changed, the noise reduction effect of the target sounding part playing the reversed-phase sound is not as good as that of the user before the sleeping posture is changed. Then, the anti-phase sound is played through the auxiliary sound production part, the problem that the noise reduction effect is poor due to the change of the sleeping posture can be solved, and good noise reduction experience is brought to a user.

The control method of the noise reduction device provided by the embodiment of the application detects the pressure distribution information of the contact surface when an object is in contact with the noise reduction device, when the human body is determined to be in contact with the noise reduction device according to the pressure distribution information, the contact information between the human body and the noise reduction device is acquired according to the pressure distribution information, the contact position information of the contact surface between the noise reduction device and the human body is acquired according to the contact information, the target noise reduction zone corresponding to the human body is determined from the preset noise reduction zone 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 acquired according to the contact information, the target audio playing component corresponding to the human body when noise reduction is performed is determined from the audio playing component arranged in the target noise reduction zone according to the height information, the external noise of the environment where the noise reduction device is located is collected, and the target audio playing component is controlled to emit the opposite-phase sound corresponding to the external noise, to achieve noise reduction.

In order to better implement the control method of the noise reduction device provided by the embodiment of the present application, the embodiment of the present application further provides a control device based on the control method. Wherein the meaning of the noun is the same as that in the above control method, and the details of the implementation can refer to the description in the method embodiment.

Referring to fig. 11, fig. 11 is a block diagram of a control device 300 according to an embodiment of the present disclosure. Specifically, the control apparatus 300 includes an obtaining module 301, a determining module 302, and a denoising module 303.

An obtaining module 301, configured to detect pressure distribution information of a contact surface when an object contacts with the noise reduction device;

a determining module 302, configured to, when it is determined that the human body is in contact with the noise reduction device according to the pressure distribution information, obtain contact information between the human body and the noise reduction device according to the pressure distribution information;

and the noise reduction module 303 is configured to control the noise reduction device to play an inverse sound of the external noise according to the contact information, so as to reduce noise.

In some embodiments, the noise reduction apparatus includes a preset noise reduction region, where multiple audio playing components are disposed in the preset noise reduction region, the noise reduction strategy includes a target audio playing component used in noise reduction, and the noise reduction module 303 is configured to:

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

The acquisition module 301 in the control device provided by the embodiment of the application can detect the pressure distribution information of the contact surface when an object is in contact with the noise reduction device; the determining module 302 may obtain contact information between the human body and the noise reduction device according to the pressure distribution information when it is determined that the human body is in contact with the noise reduction device according to the pressure distribution information; the noise reduction module 303 may control the noise reduction device to play the inverse sound of the external noise according to the contact information, so as to reduce the noise.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program runs on a computer, the computer is caused to execute a control method of a noise reduction apparatus in any one of the above embodiments, such as:

In the embodiment of the present application, the computer readable storage medium may be a magnetic disk, an optical disk, a Read Only Memory (ROM), a Random Access Memory (RAM), or the like.

The term "module" as used herein may refer to software objects that execute on the computing system. The various components, modules, engines, and services described herein may be considered as implementation objects on the computing system. The apparatus and method described herein are preferably implemented in software, but may also be implemented in hardware, and are within the scope of the present application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

It should be noted that, for the control method of the noise reducing device in the embodiment of the present application, it can be understood by a person skilled in the art that all or part of the process of implementing the control method of the noise reducing device in the embodiment of the present application can be completed by controlling related hardware through a computer program, where the computer program can be stored in a computer readable storage medium, such as a memory of an electronic device, and executed by at least one processor in the electronic device, and during the execution process, the process of the embodiment of the control method of the noise reducing device can be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory, a random access memory, etc.

For the noise reduction device in the embodiment of the present application, each functional module may be integrated in one processing chip, or each module may exist alone physically, or two or more modules are integrated in one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented as a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium such as a read-only memory, a magnetic or optical disk, or the like.

The noise reduction device and the control method thereof provided by the embodiment of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the embodiment of the present application, and the description of the above embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A noise reducing device, comprising:

a processor, the processor is respectively connected with the pressure sensing component, the audio collecting component and the audio playing component, and the processor is used for:

2. The noise reduction device according to claim 1, wherein the noise reduction device is provided with a preset noise reduction region, the preset noise reduction region is provided with a plurality of audio playing components, and the processor is further configured to:

determining a target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact information;

determining a target audio playing component corresponding to the human body when denoising is performed from audio playing components arranged in the target denoising interval according to the contact information;

3. The noise reduction apparatus of claim 2, wherein the processor is configured to:

acquiring contact position information of a contact surface between the noise reduction device and the human body according to the contact information;

and determining a target noise reduction interval corresponding to the human body from the preset noise reduction area according to the contact position information.

4. The noise reduction device of claim 3, wherein the processor is configured to:

dividing the preset noise reduction region into a plurality of noise reduction intervals according to preset intervals;

5. The noise reduction device of claim 2, wherein the processor is configured to:

and determining a target audio playing component corresponding to the human body when the noise is reduced from audio playing components arranged in the target noise reduction interval according to the height information.

6. The noise reduction device of claim 5, wherein the processor is configured to:

determining a target height interval from the plurality of height intervals according to the height information;

7. The noise reduction device of claim 6, wherein the processor is further configured to:

and when the sleeping posture of the human body is determined to be changed according to the pressure distribution information, controlling the target audio playing assembly and the auxiliary playing assembly to play the external noise.

8. The noise reduction device of claim 1, wherein the processor is further configured to:

inputting the pressure distribution information into a sleeping posture classification model to obtain the sleeping posture of the human body;

and 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.

9. A method of controlling a noise reducing device, comprising:

10. The control method according to claim 9, wherein the noise reduction device is provided with a preset noise reduction region, a plurality of audio playing components are arranged in the preset noise reduction region, and the controlling the noise reduction device to play the inverse sound of the external noise according to the contact information comprises:

11. The control method according to claim 10, wherein the determining the target noise reduction interval corresponding to the human body from the preset noise reduction region according to the contact information comprises:

12. The method according to claim 10, wherein the determining, from the audio playing components set in the target noise reduction interval, the target audio playing component corresponding to the human body when noise is reduced according to the contact information includes: