An indoor active noise reduction method and device, electronic equipment and medium

Abstract

The application relates to an indoor active noise reduction method and device, electronic equipment and a medium, and relates to the field of acoustic intelligent noise reduction. The method is used for a host of an indoor space. The indoor space comprises a noise entrance area and a standby area. The method comprises the following steps: collecting a noise signal of the noise entrance area; analyzing the noise signal to obtain the sound pressure intensity of the noise signal; judging whether the sound pressure intensity exceeds a preset threshold; if the sound pressure intensity exceeds the preset threshold, controlling a preset loudspeaker array to move from the standby area to the noise entrance area, and controlling the loudspeaker array to reduce the sound pressure intensity of the noise signal in the noise entrance area. The existing indoor active noise reduction method is difficult to balance the indoor space and the noise reduction effect. The application enables an indoor designer to have more space to improve a design scheme, and provides space for a large loudspeaker array to realize an ideal noise reduction effect.

Description

Technical Field

[0001] This invention relates to the field of acoustic intelligent noise reduction, and more particularly to an indoor active noise reduction method, device, electronic device, and medium. Background Technology

[0002] In the field of acoustic intelligent noise reduction, the commercialization of active noise cancellation technology requires adapting it to the actual scenarios of various industries and solving technical problems to achieve true implementation. Existing indoor active noise cancellation methods struggle to balance two aspects: on the one hand, acoustic engineers prefer to use as many speaker arrays as possible to achieve optimal noise reduction; on the other hand, an excessive number of speaker arrays can negatively impact the interior space, limiting the design options available to interior designers.

[0003] Because downstream companies or customers prioritize the opinions and views of interior designers when purchasing smart active noise cancellation solutions, active noise cancellation solutions with a large number of speaker arrays encounter technical challenges during commercialization. Specifically, interior designers prefer active noise cancellation solutions to occupy as little space as possible. This results in fewer interior designers choosing speaker arrays that offer good noise cancellation but require a large footprint, thus hindering the promotion and upgrading of active noise cancellation solutions.

[0004] Therefore, the industry needs to develop an active indoor noise reduction method to solve the technical problems in the above scenarios, which can balance indoor space and noise reduction effect. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to design an indoor active noise reduction method that can take into account both indoor space and noise reduction effect.

[0006] To address the aforementioned issues, this invention proposes an indoor active noise reduction method, device, electronic equipment, and medium. First, noise signals from the noise inlet area are collected. Then, the sound pressure level of the noise signal is obtained. Next, it is determined whether the sound pressure level exceeds a preset threshold. If it does, the speaker array is moved from a backup area to the noise inlet area, and the sound pressure level of the noise signal is reduced. This allows interior designers more space to refine their design schemes and provides room for the large speaker array to move, thereby achieving the desired noise reduction effect.

[0007] In a first aspect, the present invention proposes an indoor active noise reduction method for a host unit in an indoor space, the indoor space including a noise inlet area and a backup area, the indoor active noise reduction method comprising: acquiring a noise signal in the noise inlet area; analyzing the noise signal to obtain the sound pressure intensity of the noise signal; determining whether the sound pressure intensity exceeds a preset threshold; if the sound pressure intensity exceeds the preset threshold, controlling a preset speaker array to move from the backup area to the noise inlet area, and controlling the speaker array to reduce the sound pressure intensity of the noise signal in the noise inlet area.

[0008] A further technical solution is that if the sound pressure intensity does not exceed a preset threshold, a selection command is sent to the mobile terminal; if a first feedback command responding to the selection command is received from the mobile terminal, the lighting lamp is controlled to emit light in the standby area.

[0009] A further technical solution is that if a second feedback instruction responding to the selection instruction is received from the mobile terminal, the lighting lamp is controlled to charge in the standby area; wherein, the lighting lamp does not emit light while charging.

[0010] A further technical solution is to analyze the noise signal to obtain the sound pressure level and duration of the noise signal.

[0011] A further technical solution is to multiply the sound pressure level and the duration to obtain the sound pressure intensity, and then determine whether the sound pressure intensity exceeds a preset threshold.

[0012] Secondly, the present invention proposes an indoor active noise reduction device, comprising: a speaker array, a moving device, a noise detection device, and a host; the volume of the speaker array is greater than or equal to 5% of the volume of the indoor space; the speaker array is connected to the moving device, and both the speaker array and the moving device are located within the indoor space; the speaker array, the moving device, and the noise detection device are all connected to the host; the host is used to control the moving device to move the speaker array from the spare area to the noise entry area; the host is used to control the noise detection device to collect noise signals from the noise entry area; and the host performs the indoor active noise reduction method as described in the first aspect.

[0013] A further technical solution is that the indoor space also includes a commonly used area, which is connected to both the noise inlet area and the spare area. The indoor active noise reduction device includes: the moving device includes a sliding track and a sliding member; the speaker array is connected to the sliding member; the sliding member is disposed on the sliding track; the sliding track includes a first track segment, a second track segment, and a third track segment; the first track segment is connected to the second track segment, and the second track segment is connected to the third track segment; the first track segment is disposed on both sides of the noise inlet area, the second track segment is disposed in the commonly used area, and the third track segment is disposed in the spare area; the first track segment and the third track segment are perpendicular to each other.

[0014] A further technical solution is that the indoor active noise reduction device also includes a lighting lamp, which is connected to the speaker array, the sliding member, and the main unit; the noise detection device is located on the side of the noise entry area away from the mobile device.

[0015] Thirdly, the present invention provides an electronic device comprising: a memory for storing a computer program; and a processor for executing the program stored in the memory to implement the steps of the method described in the first aspect.

[0016] Fourthly, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the method described in the first aspect.

[0017] Existing indoor active noise reduction methods struggle to balance indoor space requirements with noise reduction effectiveness. This invention addresses these technical problems by first acquiring noise signals from the noise entry area, then obtaining the sound pressure level of the noise signal, and finally determining whether the sound pressure level exceeds a preset threshold. If it does, the speaker array is moved from a backup area to the noise entry area, and the sound pressure level of the noise signal is reduced. This allows interior designers more space to refine their design plans and provides room for the large speaker array to move, thus achieving the desired noise reduction effect. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart illustrating an indoor active noise reduction method provided in an embodiment of the present invention.

[0021] Figure 2 This is another schematic diagram of an indoor active noise reduction method provided in an embodiment of the present invention.

[0022] Figure 3 This is a partial view of an indoor active noise reduction device provided in an embodiment of the present invention.

[0023] Figure 4 Another partial view of an indoor active noise reduction device provided in an embodiment of the present invention.

[0024] Figure 5 This is an exterior view of an indoor active noise reduction device provided in an embodiment of the present invention.

[0025] Figure 6 This is another partial view of an indoor active noise reduction device provided in an embodiment of the present invention.

[0026] Figure 7 This is a control block diagram of an indoor active noise reduction device provided in an embodiment of the present invention.

[0027] Figure 8 This is a block diagram of an electronic device provided in an embodiment of the present invention.

[0028] Figure Labels

[0029] Speaker array 10, mobile device 20, noise detection device 30, main unit 40, indoor space 1, noise entry area 1a, commonly used area 1b, spare area 1c;

[0030] Sliding track 21, sliding component 22, lighting lamp 23, first track section 2a, second track section 2b, third track section 2c. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0033] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0034] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to one or any combination of the associated listed items and all possible combinations, and includes such combinations.

[0035] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrases "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0036] Example 1

[0037] Please see Figures 1 to 7 ,in Figures 3 to 7 An indoor active noise reduction device is provided in an embodiment of the present invention for use in an indoor space 1. The indoor space 1 includes a noise inlet area 1a, a commonly used area 1b, and a spare area 1c. The commonly used area 1b is connected to both the noise inlet area 1a and the spare area 1c. The indoor active noise reduction device includes: a speaker array 10, a moving device 20, a noise detection device 30, and a host 40. The volume of the speaker array 10 is greater than or equal to 5% of the volume of the indoor space 1. The speaker array 10 is connected to the moving device 20, and both the speaker array 10 and the moving device 20 are located within the indoor space 1. The speaker array 10, the moving device 20, and the noise detection device 30 are all connected to the host 40. The host 40 controls the moving device 20 to move the speaker array 10 from the spare area 1c to the noise inlet area 1a. The host 40 controls the noise detection device 30 to collect noise signals from the noise inlet area 1a. The host 40 executes the indoor active noise reduction method described in this application.

[0038] The active noise reduction effect of the speaker array 10 mainly depends on the number of speakers in the array. As the number of speakers increases, the space or area occupied by the speaker array 10 also increases. Although the active noise reduction effect is improved, it compresses the indoor space 1. If the volume of the speaker array 10 is relatively large, for example, greater than or equal to 5%, 10%, 15%, or 20% of the volume of the indoor space 1, then while the speaker array 10 performs active noise reduction in the noise entry area 1a, it will also affect the free movement space within the indoor space 1. The solution described in this application solves the above problems. The moving device 20 can specifically be a sliding track, used to move the speaker array 10 from one area to another. Those skilled in the art can use any moving device to achieve the above function. The specific selection of the noise detection device 30 is well known to those skilled in the art. The host 40 can control the indoor active noise reduction device to implement the indoor active noise reduction method of this application. Specifically, it controls the moving device 20 to move the speaker array 10 from the spare area 1c to the noise entry area 1a, and controls the noise detection device 30 to collect the noise signal of the noise entry area 1a.

[0039] In the above scheme, the indoor space 1 is located inside a building, which can be a room in a residential or office building. The indoor space 1 itself will be ventilated or have airflow with the outside. The area near the ventilation location is the noise inlet area 1a. The specific area can be set. For example, if there is a rectangular window at the ventilation location, a new rectangle similar to the rectangular window can be constructed. The area of ​​the new rectangle is more than N times the area of ​​the window, and N is greater than one. The engineer can set the value of N, for example, equal to two or three. A hexahedron is constructed with the new rectangle as the surface. The area occupied by the hexahedron in the indoor space 1 is the noise inlet area 1a. In one embodiment, the volume of the noise inlet area 1a is larger than the volume of the speaker array 10.

[0040] In the above scheme, the indoor space 1 itself has a ceiling, and the area near the ceiling is the spare area 1c. The specific area can be defined; for example, a movable speaker array 10 is installed at the ceiling location. First, the circumscribed hexahedron of the speaker array 10 is constructed, and then a new hexahedron similar to the circumscribed hexahedron is constructed. The volume of the new hexahedron is more than N times the volume of the circumscribed hexahedron, and N is greater than one. The engineer can set the value of N, for example, to be two or three. Thus, when the new hexahedron is close to the ceiling, the area occupied by the new hexahedron in the indoor space 1 is the spare area 1c. In one embodiment, the volume of the spare area 1c is larger than the volume of the speaker array 10.

[0041] The beneficial effects of the above solution are that the indoor active noise reduction device can achieve active noise reduction. First, it collects the noise signal in the noise entry area, then obtains the sound pressure intensity of the noise signal, and then determines whether the sound pressure intensity exceeds a preset threshold. If it does, it controls the speaker array to move from the standby area to the noise entry area and reduces the sound pressure intensity of the noise signal. This allows interior designers to have more space to improve the design scheme, while also making room for the large speaker array to achieve the ideal noise reduction effect.

[0042] Furthermore, the moving device 20 of the indoor active noise cancellation device includes a sliding track 21 and a slider 22. The speaker array 10 is connected to the slider 22, and the slider 22 is disposed on the sliding track 21. The sliding track 21 includes a first track segment 2a, a second track segment 2b, and a third track segment 2c. The first track segment 2a is connected to the second track segment 2b, and the second track segment 2b is connected to the third track segment 2c. The first track segment 2a is disposed on both sides of the noise entry area 1a, the second track segment 2b is disposed in the commonly used area 1b, and the third track segment 2c is disposed in the spare area 1c. The first track segment 2a and the third track segment 2c are perpendicular to each other.

[0043] The sliding member 22 is disposed on the sliding track 21, meaning the sliding member 22 can slide along the sliding track 21. The speaker array 10 is connected to the sliding member 22, meaning the speaker array 10 can also slide along the sliding track 21. The sliding track 21 includes a first track segment 2a, a second track segment 2b, and a third track segment 2c. The first track segment 2a can be perpendicular to the floor, and the third track segment 2c can be parallel to the floor, i.e., parallel to the ceiling. The second track segment 2b can be arc-shaped or form an acute angle with the ceiling. The first track segment 2a is disposed on both sides of the noise inlet area 1a, specifically on both sides of the room window.

[0044] The second track segment 2b is located within the commonly used area 1b. Since the commonly used area 1b occupies most of the space in the entire indoor space 1, the location of the second track segment 2b within the commonly used area 1b can smoothly connect the area of ​​the first track segment 2a and the third track segment 2c. The specific area can be set or selected by the user. The third track segment 2c is located within the spare area 1c, and can be located on the ceiling of the indoor space 1. The first track segment 2a and the third track segment 2c are perpendicular to each other. In this structure, the first track segment 2a is located on both sides of the window in the indoor space 1 and is parallel to the window. At this time, the active noise cancellation effect is optimal. Since the direction of the window is perpendicular to the ceiling, the first track segment 2a and the third track segment 2c are perpendicular. At this time, the third track segment 2c is parallel to the ceiling, which can minimize the impact on the space of the commonly used area 1b, that is, avoid the entire indoor space 1 from being affected by the presence of the speaker array 10, thus preventing it from affecting the interior design or increasing the sense of crowding.

[0045] In the above scheme, the entire sliding track 21 can be integrally formed. The boundaries between the various track segments within the sliding track 21 are determined by the boundaries between the noise inlet area 1a, the commonly used area 1b, and the spare area 1c. The boundary between the noise inlet area 1a and the commonly used area 1b determines the boundary between the first track segment 2a and the second track segment 2b. The boundary between the commonly used area 1b and the spare area 1c determines the boundary between the second track segment 2b and the third track segment 2c. In one embodiment, the noise inlet area 1a accounts for less than or equal to 20% of the indoor space 1, and the spare area 1c accounts for less than or equal to 30% of the indoor space 1. The portion of the indoor space 1 excluding the noise inlet area 1a and the spare area 1c is the commonly used area 1b.

[0046] Furthermore, the indoor active noise cancellation device also includes a lighting lamp 23, which is connected to the speaker array 10, the slider 22, and the main unit 40. The noise detection device 30 is located on the side of the noise entry area 1a away from the moving device 20. The main unit 40 can control whether the lighting lamp 23 is illuminating or charging. The lighting lamp 23 is connected to both the speaker array 10 and the slider 22, meaning it can slide along the sliding track 21 and move together with the speaker array 10. By sliding along the sliding track 21, the lighting lamp 23 can switch between the noise entry area 1a, the frequently used area 1b, and the spare area 1c, improving the flexibility of the lighting lamp 23 in the indoor space 1. The noise detection device 30 is located on the side of the noise inlet area 1a away from the mobile device 20, that is, the noise detection device 30 is located on the side of the noise inlet area 1a closer to the noise source, or on the outside of the noise inlet area 1a. The technical effect is that the noise detection device 30 can be closer to the noise source, thereby making the noise detected by the entire indoor active noise reduction device more accurate.

[0047] Continue reading Figures 1 to 7 ,in Figure 1 This invention proposes an indoor active noise reduction method. The method is used in an indoor active noise reduction device, specifically a main unit in an indoor space, which includes a noise inlet area, a frequently used area, and a spare area. This indoor active noise reduction method can be used for large speaker arrays, i.e., scenarios where the speaker array is large in size. When a large speaker array is placed in a noise inlet area, its large size would affect the indoor space. This method can balance indoor space considerations with noise reduction effectiveness. The indoor active noise reduction method includes:

[0048] S101, Collect the noise signal of the noise entry area.

[0049] In the above scheme, the noise signal of the noise inlet area can be collected using a noise detection device. Those skilled in the art will understand that when the noise detection device is positioned on the side of the noise inlet area closer to the noise source, the collected noise signal is more ideal or more accurate. Specifically, the side closer to the noise source can be the side of the noise inlet area furthest from the mobile device. Those skilled in the art will understand that active noise cancellation is a noise reduction technology that uses a noise reduction system to emit sound waves with the same anti-phase as the ambient noise to cancel out the ambient noise, thereby achieving the effect of noise reduction. Therefore, the noise signal in the noise inlet area is equivalent to the ambient noise, and the ambient noise can be canceled out by relying on anti-phase sound waves, that is, the noise signal in the noise inlet area can be canceled out.

[0050] S102, Analyze the noise signal to obtain the sound pressure intensity of the noise signal.

[0051] The specific method for analyzing the noise signal is known to those skilled in the art. The sound pressure intensity of the noise signal is subsequently obtained. The specific parameters of the sound pressure intensity can be defined by the engineer. Any parameter or index that can measure whether the sound pressure is strong or weak can be considered as sound pressure intensity. For example, the sound pressure intensity can be defined as the result of multiplying the sound pressure level and the duration. In this case, the sound pressure intensity is related to two parameters: the first is the sound pressure level, and the second is the duration.

[0052] S103, determine whether the sound pressure intensity exceeds a preset threshold.

[0053] The preset threshold can be set by the engineer or defined according to the requirements. The threshold here is the critical point at which the entire noise detection device starts to start. If the threshold is exceeded, the speaker array moves to the noise entry area and actively reduces noise. If the threshold is not exceeded, the speaker array remains in the standby area. The sound pressure level can be the instantaneous sound pressure, which is the sound pressure value at a certain instant in the sound field.

[0054] In one embodiment, the above scheme includes analyzing the noise signal to obtain the sound pressure level and duration of the noise signal; multiplying the sound pressure level and the duration to obtain the sound pressure intensity; and determining whether the sound pressure intensity exceeds a preset threshold. That is, the sound pressure intensity is positively correlated with two factors: the first is the sound pressure level, and the second is the duration. If the noise detection device detects noise with a high sound pressure level, even if the duration is short, it will be determined to exceed the preset threshold; if the noise detection device detects noise with a long duration, even if the sound pressure level is low, it will also be determined to exceed the preset threshold.

[0055] S104, if the sound pressure intensity exceeds a preset threshold, control the preset speaker array to move from the spare area to the noise entry area, and control the speaker array to reduce the sound pressure intensity of the noise signal in the noise entry area.

[0056] The noise inlet area can be a region near a window in the interior space, and the backup area can be a region near the ceiling in the interior space. Since the window is mounted on the wall of the interior space, the window and the ceiling are perpendicular to each other. If the sound pressure level exceeds a preset threshold, it can be considered that the sound pressure level of the noise has exceeded the range that the entire interior space can withstand, and people in the interior space will be disturbed by the noise. To reduce this disturbance, the main unit of the indoor active noise cancellation device can control a preset speaker array to move from the backup area to the noise inlet area, and control the speaker array to reduce the sound pressure level of the noise signal in the noise inlet area. In other words, space can be provided in the interior through automatic sensing, giving interior designers more space to improve their design plans, while making room for a large speaker array to achieve the desired noise reduction effect.

[0057] Those skilled in the art will understand that active noise cancellation is a noise reduction technology that uses a noise reduction system to emit sound waves with the same anti-phase as the ambient noise to cancel it out, thereby achieving the effect of noise reduction. Compared with passive noise cancellation, active noise cancellation technology can better cancel low-frequency noise. The principle of active noise cancellation is that when two sound waves have the same frequency and amplitude but opposite phase, they will cancel each other out when superimposed. Therefore, controlling the speaker array to reduce the sound pressure intensity of the noise signal in the noise entry area means controlling the speaker array to emit anti-phase sound waves in the noise entry area to reduce the sound pressure intensity of the noise signal; wherein, the function of the anti-phase sound waves is to cancel the noise signal, that is, to cancel the ambient noise collected by the noise detection device.

[0058] In one embodiment, the specific execution process of the above-mentioned active noise reduction is as follows: a noise signal is collected using a data acquisition card, and the controller performs algorithm processing on the noise signal to obtain corresponding secondary sound wave data or secondary signal. The secondary signal is played through a speaker and cancels out the initial noise to achieve a noise reduction effect.

[0059] The technical effect of the above solution is as follows: first, the noise signal in the noise entry area is collected; then, the sound pressure intensity of the noise signal is obtained; then, it is determined whether the sound pressure intensity exceeds a preset threshold. If it does, the speaker array is controlled to move from the spare area to the noise entry area and the sound pressure intensity of the noise signal is reduced. This allows interior designers to have more space to improve the design scheme, while also making room for the large speaker array to achieve the ideal noise reduction effect.

[0060] Following steps S101-S104 above, the indoor active noise reduction method further includes the following steps:

[0061] S201, if the sound pressure intensity does not exceed the preset threshold, send a selection command to the mobile terminal.

[0062] The speaker array is connected to the lighting fixture, and the speaker array and the lighting fixture move together. If the sound pressure level does not exceed a preset threshold, it can be considered that the sound pressure level of the noise does not exceed the range that the entire indoor space can bear. In this case, in an indoor scenario where active noise reduction is not required in the noise entry area, the speaker array and the lighting fixture are still on the ceiling. People in the indoor space can use a mobile terminal to select the status after receiving a selection command and adjust the working status of the lighting fixture.

[0063] S202, if a first feedback instruction responding to the selection instruction is received from the mobile terminal, the lighting lamp is controlled to illuminate in the spare area.

[0064] Wherein, after sending the selection command to the mobile terminal, if a first feedback command is received from the mobile terminal, the lighting lamp is controlled to emit light in the standby area; the first feedback command is used to respond to the selection command, and may specifically be an emission command.

[0065] S203, if a second feedback instruction responding to the selection instruction is received from the mobile terminal, the lighting lamp is controlled to charge in the spare area.

[0066] Specifically, after sending the selection command to the mobile terminal, if a second feedback command is received from the mobile terminal, the lighting lamp is controlled to charge in the standby area. The second feedback command is used to respond to the selection command, and can specifically be a charging command. When the lighting lamp is charging, it does not emit light; that is, the lighting lamp can emit light when not charging, and it can charge when not emitting light, but it will not emit light and charge simultaneously, thus achieving a good energy-saving effect.

[0067] The function of steps S201-S203 is to enable state switching between three modes: noise cancellation mode, lighting mode, and sleep mode. The noise cancellation mode is the first candidate mode. If the conditions for noise cancellation mode are met, the speaker array reduces the sound pressure intensity of the noise signal in the noise entry area. If the conditions for noise cancellation mode are not met, the system determines whether to enter lighting mode or sleep mode based on feedback instructions. In this way, intelligent determination is achieved in terms of whether to enter noise cancellation mode, which is difficult for users to define, and autonomous determination is achieved in terms of whether to enter sleep mode, which is easy for users to define.

[0068] The beneficial effects of the above steps S101-S104 are that the indoor active noise reduction method first collects the noise signal in the noise entry area, then obtains the sound pressure intensity of the noise signal, and then determines whether the sound pressure intensity exceeds a preset threshold. If it exceeds the threshold, the speaker array is controlled to move from the standby area to the noise entry area and the sound pressure intensity of the noise signal is reduced. This allows interior designers to have more space to improve the design scheme, and at the same time makes room for the large speaker array to achieve the ideal noise reduction effect.

[0069] Example 2

[0070] Please see Figure 8 , Figure 8 This is a block diagram of an electronic device provided by the present invention. The electronic device can be a terminal or a server. The terminal can be an electronic device with communication functions, such as a smartphone, tablet computer, laptop computer, desktop computer, personal digital assistant, or wearable device. The electronic device includes a processor 111, a communication interface 112, a memory 113, and a communication bus 114, wherein the processor 111, communication interface 112, and memory 113 communicate with each other via the communication bus 114.

[0071] Memory 113 is used to store computer programs;

[0072] In one embodiment of the present invention, the processor 111, when executing the program stored in the memory 113, implements the method provided in any of the foregoing method embodiments.

[0073] The electronic device first collects the noise signal in the noise entry area, then obtains the sound pressure intensity of the noise signal, and then determines whether the sound pressure intensity exceeds a preset threshold. If it does, it controls the speaker array to move from the spare area to the noise entry area and reduces the sound pressure intensity of the noise signal. This allows interior designers more space to improve their design plans and makes room for the large speaker array to achieve the desired noise reduction effect.

[0074] It should be understood that in the embodiments of this application, processor 111 may be a central processing unit (CPU), and processor 502 may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0075] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program may be stored in a storage medium, which is a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.

[0076] Therefore, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method provided in any of the foregoing method embodiments.

[0077] The storage medium is a physical, non-transient storage medium, such as a USB flash drive, external hard drive, read-only memory (ROM), magnetic disk, or optical disk, or any other physical storage medium capable of storing program code. The computer-readable storage medium can be non-volatile or volatile.

[0078] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0079] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For example, the division of each unit is only a logical functional division, and there may be other division methods in actual implementation. For example, units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0080] The steps in the method of this invention can be adjusted, merged, or reduced in order according to actual needs. The units in the device of this invention can be merged, divided, or reduced according to actual needs. Furthermore, the functional units in the various embodiments of this invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0081] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a terminal, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention.

[0082] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0083] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims and their equivalents, this invention also intends to include these modifications and variations.

[0084] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An indoor active noise reduction method, characterized in that, An active noise cancellation device for indoor spaces includes a speaker array, a mobile device, a noise detection device, and a main unit. The volume of the speaker array is greater than or equal to 5% of the volume of the indoor space. The speaker array is connected to the mobile device, and both the speaker array and the mobile device are located within the indoor space. The speaker array, the mobile device, and the noise detection device are all connected to the main unit. The main unit controls the mobile device to move the speaker array from a standby area to a noise entry area. The main unit controls the noise detection device to collect noise signals from the noise entry area. The indoor space includes a commonly used area. The system comprises a noise inlet area and a backup area, with the commonly used area connected to both the noise inlet area and the backup area. The moving device includes a sliding track and a sliding member, with the speaker array connected to the sliding member, which is disposed on the sliding track. The sliding track includes a first track segment, a second track segment, and a third track segment, with the first track segment connected to the second track segment and the second track segment connected to the third track segment. The first track segment is located on both sides of the noise inlet area, the second track segment is located within the commonly used area, and the third track segment is located within the backup area. The first track segment and the third track segment are perpendicular to each other. The host computer is used to execute the indoor active noise cancellation method, which includes: Collect the noise signal of the noise entry area; The noise signal is analyzed to obtain the sound pressure level of the noise signal; Determine whether the sound pressure intensity exceeds a preset threshold; If the sound pressure intensity exceeds a preset threshold, the preset speaker array is controlled to move from the spare area to the noise entry area, and the speaker array is controlled to reduce the sound pressure intensity of the noise signal in the noise entry area; The speaker array is connected to the lighting fixture, and the speaker array and the lighting fixture move together. The method further includes: If the sound pressure level does not exceed the preset threshold, a selection command is sent to the mobile terminal; If a first feedback instruction responding to the selection instruction is received from the mobile terminal, the lighting lamp is controlled to illuminate in the spare area.

2. The indoor active noise reduction method according to claim 1, characterized in that, The method further includes: If a second feedback instruction responding to the selection instruction is received from the mobile terminal, the lighting lamp is controlled to charge in the standby area; The lamp does not emit light while it is charging.

3. The indoor active noise reduction method according to claim 1, characterized in that, The step of analyzing the noise signal to obtain the sound pressure level of the noise signal includes: The noise signal is analyzed to obtain the sound pressure level and duration of the noise signal.

4. The indoor active noise reduction method according to claim 3, characterized in that, The determination of whether the sound pressure intensity exceeds a preset threshold includes: The sound pressure level and the duration are multiplied to obtain the sound pressure intensity, and it is determined whether the sound pressure intensity exceeds a preset threshold.

5. The indoor active noise reduction method according to claim 1, characterized in that: The indoor active noise reduction device also includes a lighting lamp, which is connected to the speaker array, the sliding member, and the main unit; the noise detection device is located on the side of the noise entry area away from the mobile device.

6. An electronic device, characterized in that, include: Memory, used to store computer programs; When a processor executes a program stored in a memory, it implements the steps of the indoor active noise reduction method according to any one of claims 1-4.

7. A computer-readable storage medium, characterized in that: The storage medium stores a computer program that, when executed by a processor, can implement the indoor active noise reduction method as described in any one of claims 1-4.

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