Fan Noise Reduction Method, System, Device and Medium for Head-Mounted Display Device

Abstract

This application relates to the field of noise reduction technology, and discloses a fan noise reduction method, system, device and medium for a head-mounted display device, which is applied to a fan noise reduction system including a noise reduction speaker, a first sound pickup module, a second sound pickup module and a control unit, and includes: receiving a first fan noise signal actually generated by the fan captured by the first sound pickup module and / or a second fan noise signal actually received by the user captured by the second sound pickup module. If it is determined that the first fan noise signal meets a first preset condition and / or the second fan noise signal meets a second preset condition, a noise reduction signal is sent to the noise reduction speaker for noise reduction. Thus, by obtaining the noise actually generated by the fan captured by the first sound pickup module and / or the fan noise actually received by the user captured by the second sound pickup module, when the noise actually generated by the fan meets the first preset condition and / or the fan noise actually received by the user meets the second preset condition, the noise of the noise reduction speaker is controlled to improve the user experience.

Description

Technical Field

[0001] The present application relates to the technical field of noise reduction, and particularly to a method, system, device and medium for reducing fan noise of a head-mounted display device. Background Art

[0002] With the rise of the "metaverse" concept, virtual reality (VR) products have entered people's lives. VR products can get rid of the limitations attached to other computing terminals, with features such as wireless data transmission, real-time computing processing, and light product volume, quickly occupying the market. Due to the gradual miniaturization and portability of VR products, the problem of product heat dissipation has become crucial.

[0003] Currently, considering factors such as the volume and weight of VR product devices, high-speed fans are usually used for heat dissipation. However, when using a fan for heat dissipation, the problem of fan noise is inevitably brought, and the fan noise will have a serious impact on users when using VR products for games or audio-visual entertainment, thereby reducing the user experience.

[0004] Therefore, it can be seen that how to reduce the fan noise of VR products and improve the user experience is an urgent problem for those skilled in the art. Summary of the Invention

[0005] The purpose of the present application is to provide a method, system, device and medium for reducing fan noise of a head-mounted display device, to reduce the fan noise of the head-mounted display device and improve the user experience.

[0006] To solve the above technical problems, the present application provides a method for reducing fan noise of a head-mounted display device, which is applied to a fan noise reduction system including a noise reduction speaker, a first sound pickup module, a second sound pickup module embedded in the head-mounted display device and close to the human ear, and a control unit, and includes:

[0007] Receiving a first fan noise signal captured by the first sound pickup module and / or a second fan noise signal captured by the second sound pickup module; wherein, the first fan noise signal is the noise signal actually generated by the fan, and the second fan noise signal is the noise signal of the fan actually received by the user;

[0008] When it is determined that the first fan noise signal meets a first preset condition and / or the second fan noise signal meets a second preset condition, sending a noise reduction signal to the noise reduction speaker so that the noise reduction speaker outputs an opposite sound signal to reduce the fan noise.

[0009] Preferably, the determining that the first fan noise signal meets a first preset condition and / or the second fan noise signal meets a second preset condition includes:

[0010] Obtain the rotation speed gear of the fan and the number of blades of the fan;

[0011] Determine the noise sound pressure level corresponding to the first fan noise signal and / or the second fan noise signal according to the rotation speed gear and the number of blades;

[0012] When the noise sound pressure level corresponding to the first fan noise signal is greater than a first preset value, determine that the first fan noise signal meets the first preset condition;

[0013] When the noise sound pressure level corresponding to the second fan noise signal is greater than a second preset value, determine that the second fan noise signal meets the second preset condition.

[0014] Preferably, after receiving the first fan noise signal captured by the first sound pickup module and / or the second fan noise signal captured by the second sound pickup module, it further includes:

[0015] Filter the first fan noise signal and the second fan noise signal.

[0016] To solve the above technical problems, the present application also provides a fan noise reduction system for a head-mounted display device, including: a noise reduction speaker, a first sound pickup module, a second sound pickup module, and a control unit;

[0017] The noise reduction speaker is used to output an opposite sound signal to reduce the noise of the fan after receiving the noise reduction signal from the control unit;

[0018] The first sound pickup module is used to capture the first fan noise signal and transmit the first fan noise signal to the control unit; wherein, the first fan noise signal is the noise signal actually generated by the fan;

[0019] The second sound pickup module is embedded in the head-mounted display device and near the human ear, and is used to capture the second fan noise signal actually received by the user and transmit the second fan noise signal to the control unit;

[0020] The control unit is respectively connected to the noise reduction speaker, the first sound pickup module, and the second sound pickup module, and is used to send the noise reduction signal to the noise reduction speaker when it is determined that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition.

[0021] Preferably, there are two noise reduction speakers, and each noise reduction speaker is arranged on the base around the fan blades.

[0022] Preferably, there are two first sound pickup modules, each of the first sound pickup modules is arranged on the base around the fan blade, and the first sound pickup module and the noise reduction speaker are respectively arranged at two end points of the diameter of the circular plane where the base around the fan blade is located.

[0023] Preferably, the second sound pickup module is a microphone, there are two microphones, and the two microphones are respectively arranged near the user's left ear and right ear.

[0024] To solve the above technical problems, the present application also provides a fan noise reduction device for a head-mounted display device, including:

[0025] A receiving module, configured to receive the first fan noise signal captured by the first sound pickup module and / or the second fan noise signal captured by the second sound pickup module; wherein, the first fan noise signal is the noise signal actually generated by the fan, and the second fan noise signal is the noise signal of the fan actually received by the user;

[0026] A sending module, configured to send a noise reduction signal to the noise reduction speaker when it is determined that the first fan noise signal meets a first preset condition and / or the second fan noise signal meets a second preset condition, so that the noise reduction speaker outputs an opposite sound signal to reduce the noise of the fan.

[0027] To solve the above technical problems, the present application also provides a VR product, including a memory for storing a computer program;

[0028] A processor, configured to implement the steps of the fan noise reduction method for the head-mounted display device when executing the computer program.

[0029] To solve the above technical problems, the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the fan noise reduction method for the head-mounted display device are implemented.

[0030] A fan noise reduction method for a head-mounted display device provided by the present invention is applied to a fan noise reduction system including a noise reduction speaker, a first sound pickup module, a second sound pickup module embedded in the head-mounted display device and close to the human ear, and a control unit, and includes: receiving a first fan noise signal captured by the first sound pickup module and / or a second fan noise signal captured by the second sound pickup module in the fan noise reduction system, where the first fan noise signal is the noise signal actually generated by the fan, and the second fan noise signal is the noise signal of the fan actually received by the user. If it is determined that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition, a noise reduction signal is sent to the noise reduction speaker so that the noise reduction speaker outputs an opposite sound signal to reduce the noise of the fan. It can be seen that the technical solution provided by the present application, by acquiring the noise actually generated by the fan captured by the first sound pickup module and / or the noise of the fan actually received by the user captured by the second sound pickup module, when the noise actually generated by the fan meets the first preset condition and / or the noise of the fan actually received by the user meets the second preset condition, controls the noise reduction speaker to output an opposite sound signal to reduce the noise of the fan, thereby improving the user experience.

[0031] In addition, the present application also provides a fan noise reduction system, device and medium for a head-mounted display device, corresponding to the above-mentioned fan noise reduction method for a head-mounted display device, and the effect is the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a flowchart of a fan noise reduction method for a head-mounted display device provided by an embodiment of the present application;

[0034] Figure 2 It is a structural diagram of a fan noise reduction unit provided by an embodiment of the present application;

[0035] Figure 3 It is a schematic diagram of the setting of the second sound pickup module provided by an embodiment of the present application;

[0036] Figure 4 It is a structural diagram of a fan noise reduction device for a head-mounted display device provided by an embodiment of the present application;

[0037] Figure 5 It is a structural diagram of a VR product provided by another embodiment of the present application;

[0038] The reference numerals are as follows: 1 is a fan blade, 2 is a noise reduction speaker, 3 is a first sound pickup module, 4 is a second sound pickup module, and 5 is a head-mounted display device. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0040] The core of the present application is to provide a fan noise reduction method, system, device and medium for a head-mounted display device. By receiving the first fan noise signal actually generated by the fan captured by the first sound pickup module and the second fan noise signal actually received by the user captured by the second sound pickup module, when it is determined that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition, a noise reduction signal is sent to the noise reduction speaker for noise reduction.

[0041] In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0042] With the continuous development of technology, VR products have entered people's lives. VR products can get rid of the limitations of being attached to other computing terminals, and have characteristics such as wireless data transmission, real-time computing processing, and light product volume, quickly occupying the market. Since VR products are gradually miniaturized and portable, the product heat dissipation problem has become crucial.

[0043] Currently, considering factors such as the volume and weight of VR product devices, high-speed fans are usually used for heat dissipation. However, when using a fan for heat dissipation, the problem of fan noise is inevitably brought, and the fan noise will have a serious impact on users when using VR products for games or audio-visual entertainment, thereby reducing the user experience.

[0044] Therefore, in order to reduce the fan noise of VR products and improve the user experience, the embodiments of the present application provide a fan noise reduction method for a head-mounted display device. When it is determined that the fan noise actually generated by the fan meets the first preset condition and / or the fan noise actually received by the user meets the second preset condition, a noise reduction signal is sent to the noise reduction speaker to reduce the noise of the fan.

[0045] Figure 1The flowchart of a method for reducing fan noise of a head-mounted display device provided by an embodiment of the present application. This method is applied to a fan noise reduction system including a noise reduction speaker, a first sound pickup module, a second sound pickup module embedded in the head-mounted display device and close to the human ear, and a control unit, as Figure 1 shown. The method includes:

[0046] S10: Receive the first fan noise signal captured by the first sound pickup module and / or the second fan noise signal captured by the second sound pickup module; wherein, the first fan noise signal is the noise signal actually generated by the fan, and the second fan noise signal is the noise signal of the fan actually received by the user.

[0047] In a specific embodiment, receive the first fan noise signal actually generated by the cooling fan in the wearable product captured by the first sound pickup module, and the second fan noise signal actually received by the user captured by the second sound pickup module. Among them, the first sound pickup module can be a microphone or other components that can collect sound, and the present application does not make any limitations in this regard. It can be understood that generally, the fan structure includes a fan blade and a fan base. In order to ensure that the first fan noise captured is as close as possible to the noise actually generated by the fan, the first sound pickup module is arranged at the fan base, that is, to ensure that the first sound pickup module is as close as possible to the noise source generated by the fan.

[0048] In addition, the second sound pickup module can also be a microphone, and the second sound pickup module is embedded in the head-mounted product. Similarly, in order to ensure that the second fan noise captured by the second sound pickup module is as close as possible to the fan noise actually received by the user, therefore, two second sound pickup modules are arranged, and the second sound pickup modules are respectively arranged close to the human ear, that is, respectively arranged close to the left ear and the right ear.

[0049] Actually, when obtaining the first fan noise and the second fan noise signal, it is inevitable to obtain other sound signals of non-fan noise. Therefore, after obtaining the first fan noise and the second fan noise signal, it is necessary to filter them in order to filter out the sound signals of other fan noise, thereby improving the noise reduction accuracy.

[0050] S11: When it is determined that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition, send a noise reduction signal to the noise reduction speaker so that the noise reduction speaker outputs an opposite sound signal to reduce the noise of the fan.

[0051] After receiving the first fan noise signal and the second fan noise signal through step S10, determine whether the first fan noise signal meets the first preset condition and / or whether the second fan noise signal meets the second preset condition. If it meets, send a noise reduction signal to the noise reduction speaker so that the noise reduction speaker outputs an opposite sound signal to reduce the noise of the fan.

[0052] It should be noted that the first fan noise signal and the second fan noise signal captured are signals similar to sine waves. Therefore, when reducing the noise signal, it is necessary for the noise reduction speaker to output an opposite sound signal for cancellation, so as to achieve the noise reduction effect. In addition, it should be noted that when determining whether the first fan noise signal meets the first preset condition and / or whether the second fan noise signal meets the second preset condition, first obtain the rotation speed gear of the fan and the number of fan blades, and determine the noise sound pressure level corresponding to the first fan noise signal and / or the second fan noise signal according to the rotation speed gear and the number of blades. When the noise sound pressure level corresponding to the first fan noise signal is greater than the first preset value, it is determined that the first fan noise signal meets the first preset condition. Similarly, when the noise sound pressure level corresponding to the second fan noise signal is greater than the second preset value, it is determined that the second fan noise signal meets the second preset condition.

[0053] It can be understood that when analyzing the noise signal, it is analyzed from two dimensions: noise frequency and noise sound pressure level, where the noise sound pressure level can be understood as the magnitude of the noise. When determining whether the first fan noise signal meets the first preset condition and / or whether the second fan noise signal meets the second preset condition, and determining the noise frequency corresponding to the noise sound pressure level that meets the preset condition, at this time, the noise reduction speaker is controlled to output an opposite sound signal for noise reduction according to the noise frequency band where the noise is generated.

[0054] The fan noise reduction method for the head-mounted display device provided by the embodiments of the present application is applied to a fan noise reduction system including a noise reduction speaker, a first sound pickup module, a second sound pickup module embedded in the head-mounted display device and close to the human ear, and a control unit, and includes: receiving the first fan noise signal captured by the first sound pickup module and / or the second fan noise signal captured by the second sound pickup module in the fan noise reduction system, where the first fan noise signal is the noise signal actually generated by the fan, and the second fan noise signal is the noise signal of the fan actually received by the user. If it is determined that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition, a noise reduction signal is sent to the noise reduction speaker so that the noise reduction speaker outputs an opposite sound signal to reduce the noise of the fan. Thus, it can be seen that the technical solution provided by the present application, by obtaining the noise actually generated by the fan captured by the first sound pickup module and / or the noise of the fan actually received by the user captured by the second sound pickup module, when the noise actually generated by the fan meets the first preset condition and / or the noise of the fan actually received by the user meets the second preset condition, controls the noise reduction speaker to output an opposite sound signal to reduce the noise of the fan, thereby improving the user experience.

[0055] In a specific implementation, since the noise signal of the fan is related to the rotational speed of the fan and the number of fan blades, where the rotational speed of the fan corresponds to different speed gears. Therefore, when determining whether the first fan noise signal meets the first preset condition and whether the second fan noise signal meets the second preset condition, first obtain the relevant parameters of the fan, that is, obtain the speed gear and the number of blades of the fan, and then determine the noise sound pressure level corresponding to the first fan noise signal and / or the noise sound pressure level corresponding to the second fan noise signal according to the speed gear and the number of blades.

[0056] It can be understood that the noise sound pressure level characterizes the magnitude of the noise. When the first fan noise signal is greater than the first preset value or the second fan noise signal is greater than the second preset value, it indicates that the fan noise is too large. At this time, a noise reduction signal is sent to the noise reduction speaker so that the noise reduction speaker can perform noise reduction.

[0057] Among them, when the first fan noise signal is greater than the first preset value, it indicates that the noise signal actually generated by the fan is too large. At this time, it is necessary to control the noise reduction speaker to perform noise reduction. And when the second fan noise signal is greater than the second preset value, it indicates that the noise signal actually received by the user is too large, that is, the noise heard by the user's ears is too large. In order to improve the user experience, a noise reduction signal is also sent to the noise reduction speaker to perform noise reduction.

[0058] In fact, when the user continuously uses the head-mounted product, since the fan noise is always in the working state, the fan noise will continue to be generated. Therefore, the first fan noise signal captured by the first pickup module usually always meets the first preset condition, that is, the noise reduction speaker is in the process of continuous noise reduction. When the second pickup module captures that the fan noise signal actually received by the user is too high, control the noise reduction speaker to reduce the noise to a lower level. In fact, the second pickup module is a process of feedback calibration, which feeds back the noise signal actually heard by the user to further reduce the noise, thereby improving the user experience.

[0059] The fan noise reduction method of the head-mounted display device provided by the embodiment of the present application determines the noise sound pressure levels corresponding to the first fan noise signal and the second fan noise signal according to the speed gear of the fan and the number of fan blades, and when the noise sound pressure level corresponding to the first fan noise signal is greater than the first preset value, or the noise sound pressure level corresponding to the second fan noise signal is greater than the second preset value, it is determined that the fan noise is too large. At this time, a noise reduction signal is sent to the noise reduction speaker to reduce the fan noise. Thus, noise reduction is performed both according to the actually generated noise sound pressure level of the fan and through feedback noise reduction based on the fan noise actually received by the user, improving the reliability and effect of noise reduction, and further enhancing the user experience.

[0060] In fact, when the first sound pickup module captures the first fan noise signal actually generated by the fan, it may simultaneously capture noises generated by the noise reduction speaker or sounds generated by the head-mounted product, etc. Of course, when the second sound pickup module captures the second fan noise signal actually received by the user, it may capture the sounds when the head-mounted product plays videos or audio and video, and may also capture the ambient noises. As a result, it causes misjudgment of the noise sound pressure levels corresponding to the first fan noise signal and the second fan noise signal.

[0061] In order to avoid misjudgment of the noise sound pressure level, after receiving the first fan noise signal and the second fan noise signal in the embodiments of the present application, the first fan noise signal and the second fan noise signal are filtered to filter out the interference of the noises.

[0062] The fan noise reduction method of the head-mounted display device provided by the embodiments of the present application, after receiving the first fan noise signal captured by the first sound pickup module and the second fan noise signal captured by the second sound pickup module, filters the first fan noise signal and the second fan noise signal, thereby avoiding the influence of the noises on the noise sound pressure level and improving the noise reduction accuracy.

[0063] In the above embodiments, a fan noise reduction method for a head-mounted display device is described in detail. The present application also provides an embodiment corresponding to a fan noise reduction system for a head-mounted display device.

[0064] The system includes a noise reduction speaker, a first sound pickup module, a second sound pickup module, and a control unit. Among them, the noise reduction speaker, the first sound pickup module, and the fan main body constitute a fan noise reduction unit. The control unit is respectively connected to the noise reduction speaker, the first sound pickup module, and the second sound pickup module, and is disposed inside the head-mounted display device. The first sound pickup module is used to capture the first fan noise signal actually generated by the fan and transmit the first fan noise signal to the control unit. The second sound pickup module is embedded in the head-mounted display device and near the human ear, and is used to capture the second fan noise signal actually received by the user and transmit the second fan noise signal to the control unit.

[0065] When the control module receives the first fan noise signal and the second fan noise signal, if it is determined that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition, a noise reduction signal is sent to the noise reduction speaker, so that an opposite sound signal is output after the noise reduction signal to reduce the noise of the fan.

[0066] The fan noise reduction system of the head-mounted display device provided by the embodiment of the present application includes: a noise reduction speaker, a first sound pickup module, a second sound pickup module, and a control unit. The noise reduction speaker is configured to output an opposite sound signal to reduce the noise of the fan after receiving the noise reduction signal from the control unit. The first sound pickup module is configured to capture the first fan noise signal actually generated by the fan. The second sound pickup module is embedded in the head-mounted display device and near the human ear, and is configured to capture the second fan noise signal actually received by the user and transmit the second fan noise signal to the control unit. The control unit is respectively connected to the noise reduction speaker, the first sound pickup module, and the second sound pickup module, and is configured to send a noise reduction signal to the noise reduction speaker when it is determined that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition. Thus, when the noise actually generated by the fan and the fan noise actually received by the user are too large, the opposite sound signal is output by the noise reduction speaker for noise reduction, improving the user experience of using the head-mounted display device.

[0067] On the basis of the above embodiment, in order to ensure that the first fan signal captured by the first sound pickup module is as close as possible to the noise actually generated by the fan, and in order to ensure the noise reduction effect of the noise reduction speaker. Figure 2 The structural diagram of the fan noise reduction unit provided by the embodiment of the present application is as Figure 2 shown, both the noise reduction speaker 2 and the first sound pickup module 3 are arranged on the base outside the fan blade 1.

[0068] Of course, in order to better capture the first fan noise signal and ensure the noise reduction effect, the number of the first sound pickup modules 3 and the noise reduction speakers 2 can both be set to two. In a specific implementation, since the volume of the fan in some head-mounted display devices is relatively small, the noise reduction effect of one first sound pickup module 3 and one noise reduction speaker 2 may already be very good. Therefore, the number of the first sound pickup modules 3 and the noise reduction speakers 2 can be set according to the actual situation, and the present application does not make any limitation in this regard.

[0069] It can be understood that when the noise reduction speaker 2 works to output an opposite sound signal, it will inevitably generate a certain amount of noise. Therefore, in order to prevent the first sound pickup module 3 from capturing the noise generated when the noise reduction speaker 2 works in the first fan noise signal. Therefore, since the fan rotation plane is usually circular, in order to ensure that the distance between the first sound pickup module 3 and the noise reduction speaker 2 is as far as possible, the first sound pickup module 3 and the noise reduction speaker 2 are respectively arranged at two end points of the diameter of the circular plane where the base outside the fan blade 1 is located.

[0070] In the fan noise reduction system of the head-mounted display device provided by the embodiments of the present application, both the noise reduction speaker and the first sound pickup module are arranged on the outer base of the fan blade, and the number of both is set to two, thereby improving the accuracy of capturing the first fan noise signal and enhancing the noise reduction effect. In addition, the first sound pickup module and the noise reduction speaker are respectively arranged at two end points of the diameter of the circular plane where the outer base of the fan blade is located, so as to prevent the first sound pickup module from capturing the noise generated by the noise reduction speaker when capturing the first fan noise signal, thereby improving the fan noise reduction effect of the head-mounted display device.

[0071] In specific implementation, in order to ensure that the fan noise reduction effect reaches the acceptable range of users, therefore, in the technical solution provided by the embodiments of the present application, a second sound pickup module is arranged on the head-mounted display device to capture the second fan noise signal actually received by the user.

[0072] Figure 3 Schematic diagram of the second sound pickup module provided by the embodiments of the present application, as Figure 3 shown, the second sound pickup module 4 is embedded in the head-mounted display device 5, and in order to ensure better capture of the second fan noise signal actually received by the user, two second sound pickup modules 4 are arranged, and are respectively arranged near the user's left ear and right ear. Among them, the second sound pickup module 4 can be a microphone or other sound-capturing components, and the present application does not make any limitations in this regard.

[0073] It can be understood that the second fan noise signal actually received by the user is captured by the second sound pickup module 4 and transmitted to the control unit. When the noise sound pressure level corresponding to the second fan noise signal meets the conditions, the noise reduction speaker is controlled to perform noise reduction, thereby forming a feedback loop to continuously correct the generated noise and ensure that the fan noise signal actually received by the user is within the acceptable range.

[0074] In the fan noise reduction system of the head-mounted display device provided by the embodiments of the present application, the second sound pickup module is a microphone, and there are two microphones, which are respectively arranged near the user's left ear and right ear. Ensure that the second fan noise signal captured by the second sound pickup module is as close as possible to the fan noise signal actually received by the user, improve the fan noise reduction effect, and thereby enhance the user experience.

[0075] In the above embodiments, a fan noise reduction method for a head-mounted display device is described in detail. The present application also provides corresponding embodiments of a fan noise reduction device for a head-mounted display device. It should be noted that the present application describes the embodiments of the device part from two perspectives, one is from the perspective of functional modules, and the other is from the perspective of hardware structure.

[0076] Figure 4 Structural diagram of a fan noise reduction device for a head-mounted display device provided by the embodiments of the present application, asFigure 4 As shown, the device includes:

[0077] A receiving module 10, configured to receive a first fan noise signal captured by a first sound pickup module and / or a second fan noise signal captured by a second sound pickup module; wherein, the first fan noise signal is the noise signal actually generated by the fan, and the second fan noise signal is the noise signal of the fan actually received by the user;

[0078] A sending module 11, configured to send a noise reduction signal to a noise reduction speaker to enable the noise reduction speaker to output an opposite sound signal to reduce the noise of the fan when it is determined that the first fan noise signal meets a first preset condition and / or the second fan noise signal meets a second preset condition.

[0079] Since the embodiments of the device part correspond to the embodiments of the method part, for the embodiments of the device part, please refer to the description of the embodiments of the method part, which will not be elaborated here.

[0080] The fan noise reduction device of the head-mounted display device provided by the embodiments of the present application includes: receiving a first fan noise signal captured by a first sound pickup module and / or a second fan noise signal captured by a second sound pickup module in a fan noise reduction system, wherein the first fan noise signal is the noise signal actually generated by the fan, and the second fan noise signal is the noise signal of the fan actually received by the user. If it is determined that the first fan noise signal meets a first preset condition and / or the second fan noise signal meets a second preset condition, a noise reduction signal is sent to the noise reduction speaker so that the noise reduction speaker outputs an opposite sound signal to reduce the noise of the fan. Thus, it can be seen that the technical solution provided by the present application controls the noise reduction speaker to output an opposite sound signal to reduce the noise of the fan by obtaining the noise actually generated by the fan captured by the first sound pickup module and / or the noise of the fan actually received by the user captured by the second sound pickup module, when the noise actually generated by the fan meets the first preset condition and / or the noise of the fan actually received by the user meets the second preset condition, thereby improving the user experience.

[0081] Figure 5 It is a structural diagram of a VR product provided by another embodiment of the present application, as Figure 5 shown, the VR product includes: a memory 20, configured to store a computer program;

[0082] A processor 21, configured to implement the steps of the fan noise reduction method of the head-mounted display device mentioned in the above embodiments when executing the computer program.

[0083] The VR product provided by this embodiment may include but is not limited to a smart phone, a tablet computer, a laptop computer, or a desktop computer, etc.

[0084] Among them, the processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 21 may be implemented in at least one of the following hardware forms: Digital Signal Processor (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor. The main processor is a processor used to process data in the wake state, also known as the Central Processing Unit (CPU); the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor 21 may be integrated with a Graphics Processing Unit (GPU), and the GPU is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 21 may further include an Artificial Intelligence (AI) processor, and the AI processor is used to process computational operations related to machine learning.

[0085] The memory 20 may include one or more computer-readable storage media, and the computer-readable storage media may be non-transitory. The memory 20 may further include high-speed random access memory and non-volatile memory, such as one or more disk storage devices and flash storage devices. In this embodiment, the memory 20 is at least used to store the following computer program 201. After the computer program is loaded and executed by the processor 21, it can implement the relevant steps of the fan noise reduction method of the head-mounted display device disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may further include an operating system 202 and data 203, etc., and the storage method may be transient storage or permanent storage. Among them, the operating system 202 may include Windows, Unix, Linux, etc. The data 203 may include, but is not limited to, the relevant data involved in the fan noise reduction method of the head-mounted display device.

[0086] In some embodiments, the VR product may further include a display screen 22, an input / output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.

[0087] Those skilled in the art can understand that Figure 5 the structure shown in

[0088] The VR product provided by the embodiment of the present application includes a memory and a processor. When the processor executes the program stored in the memory, the following method can be implemented: a method for reducing the noise of the fan of a head-mounted display device.

[0089] The fan noise reduction device of the head-mounted display device provided by the embodiment of the present application obtains the noise actually generated by the fan captured by the first sound pickup module and / or the noise of the fan actually received by the user captured by the second sound pickup module. When the noise actually generated by the fan meets the first preset condition and / or the noise of the fan actually received by the user meets the second preset condition, the noise reduction speaker is controlled to output an opposite sound signal to reduce the noise of the fan, thereby improving the user experience.

[0090] Finally, the present application also provides an embodiment corresponding to a computer-readable storage medium. A computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor, the steps recorded in the above method embodiment are implemented.

[0091] It can be understood that if the method in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, 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. The computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0092] The above has introduced in detail a method, system, device, and medium for reducing the noise of the fan of a head-mounted display device provided by the present application. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part. It should be noted that for those of ordinary skill in the art in the technical field of the present application, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0093] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A method for reducing noise of a fan in a head-mounted display device, characterized in that, A fan noise reduction system applied to a system including a noise reduction speaker, a first sound pickup module, a second sound pickup module embedded in a head-mounted display device and close to the human ear, and a control unit, comprising: Receiving a first fan noise signal captured by the first sound pickup module and / or a second fan noise signal captured by the second sound pickup module; wherein, the first fan noise signal is the noise signal actually generated by the fan, and the second fan noise signal is the noise signal of the fan actually received by the user; When it is determined that the first fan noise signal meets a first preset condition and / or the second fan noise signal meets a second preset condition, sending a noise reduction signal to the noise reduction speaker so that the noise reduction speaker outputs an opposite sound signal to reduce the noise of the fan; The determining that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition includes: Obtaining the rotation speed gear of the fan and the number of fan blades; Determining the noise sound pressure level corresponding to the first fan noise signal and / or the second fan noise signal according to the rotation speed gear and the number of fan blades; When the noise sound pressure level corresponding to the first fan noise signal is greater than a first preset value, determining that the first fan noise signal meets the first preset condition; When the noise sound pressure level corresponding to the second fan noise signal is greater than a second preset value, determining that the second fan noise signal meets the second preset condition; There are two noise reduction speakers, and each noise reduction speaker is arranged on the outer base of the fan blade; There are two first sound pickup modules, each first sound pickup module is arranged on the outer base of the fan blade, and the first sound pickup module and the noise reduction speaker are respectively arranged at two ends of the diameter of the circular plane where the outer base of the fan blade is located.

2. The method for reducing noise of a fan in a head-mounted display device according to claim 1, characterized in that, After receiving the first fan noise signal captured by the first sound pickup module and / or the second fan noise signal captured by the second sound pickup module, it further includes: Filtering the first fan noise signal and the second fan noise signal.

3. A system for reducing noise of a fan in a head-mounted display device, characterized in that, Including: A noise reduction speaker, a first sound pickup module, a second sound pickup module and a control unit; The noise reduction speaker is used to output an opposite sound signal to reduce the noise of the fan after receiving the noise reduction signal from the control unit; The first sound pickup module is used to capture a first fan noise signal and transmit the first fan noise signal to the control unit; wherein, the first fan noise signal is the noise signal actually generated by the fan; The second sound pickup module is embedded in the head-mounted display device and close to the human ear, and is used to capture a second fan noise signal actually received by the user and transmit the second fan noise signal to the control unit; The control unit is respectively connected to the noise reduction speaker, the first sound pickup module and the second sound pickup module, and is used to send the noise reduction signal to the noise reduction speaker when it is determined that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition; Determining that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition includes: Obtain the rotation speed gear of the fan and the number of fan blades; Determine the noise sound pressure level corresponding to the first fan noise signal and / or the second fan noise signal according to the rotation speed gear and the number of blades; When the noise sound pressure level corresponding to the first fan noise signal is greater than a first preset value, determine that the first fan noise signal meets the first preset condition; When the noise sound pressure level corresponding to the second fan noise signal is greater than a second preset value, determine that the second fan noise signal meets the second preset condition; There are two noise reduction speakers, and each noise reduction speaker is arranged on the base around the fan blades; There are two first sound pickup modules, each first sound pickup module is arranged on the base around the fan blades, and the first sound pickup module and the noise reduction speaker are respectively arranged at two end points of the diameter of the circular plane where the base around the fan blades is located.

4. The system for reducing noise of a fan in a head-mounted display device according to claim 3, characterized in that, The second sound pickup module is a microphone, there are two microphones, and the two microphones are respectively arranged near the user's left ear and right ear.

5. A device for reducing noise of a fan in a head-mounted display device, characterized in that, It includes: A receiving module, configured to receive the first fan noise signal captured by the first sound pickup module and / or the second fan noise signal captured by the second sound pickup module; wherein, the first fan noise signal is the noise signal actually generated by the fan, and the second fan noise signal is the noise signal of the fan actually received by the user; A sending module, configured to send a noise reduction signal to the noise reduction speaker when it is determined that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition, so that the noise reduction speaker outputs an opposite sound signal to reduce the noise of the fan; Determining that the first fan noise signal meets the first preset condition and / or the second fan noise signal meets the second preset condition includes: Obtain the rotation speed gear of the fan and the number of fan blades; Determine the noise sound pressure level corresponding to the first fan noise signal and / or the second fan noise signal according to the rotation speed gear and the number of blades; When the noise sound pressure level corresponding to the first fan noise signal is greater than a first preset value, determine that the first fan noise signal meets the first preset condition; When the noise sound pressure level corresponding to the second fan noise signal is greater than a second preset value, determine that the second fan noise signal meets the second preset condition; There are two noise reduction speakers, and each noise reduction speaker is arranged on the base around the fan blades; There are two first sound pickup modules, each first sound pickup module is arranged on the base around the fan blades, and the first sound pickup module and the noise reduction speaker are respectively arranged at two end points of the diameter of the circular plane where the base around the fan blades is located.

6. A VR product, characterized in that, It includes a memory for storing a computer program; A processor, configured to implement the steps of the fan noise reduction method of the head-mounted display device as claimed in claim 1 or 2 when executing the computer program.

7. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor, the steps of the fan noise reduction method of the head-mounted display device as claimed in claim 1 or 2 are implemented.

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