CN115419608A - Fan noise reduction method, system, device and medium for head-mounted display equipment - Google Patents
Fan noise reduction method, system, device and medium for head-mounted display equipment Download PDFInfo
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- 238000010586 diagram Methods 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 7
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
Abstract
The application relates to the technical field of noise reduction, and discloses a fan noise reduction method, system, device and medium for a head-mounted display device, which are applied to a fan noise reduction system comprising a noise reduction loudspeaker, a first pickup module, a second pickup module and a control unit, and comprise: and receiving a first fan noise signal actually generated by the fan and captured by the first sound pickup module and/or a second fan noise signal actually received by the user and captured by the second sound pickup module. And if the first fan noise signal meets the first preset condition and/or the second fan noise signal meets the second preset condition, sending a noise reduction signal to a noise reduction loudspeaker for noise reduction. From this, through the fan noise that the user that acquires the actual noise that produces of the fan of first pickup module seizure and/or the actual reception of second pickup module seizure, when the noise that the fan actually produced satisfies first preset condition and/or the noise of the fan that the user actually received satisfies the second preset condition, the control falls the loudspeaker noise of making an uproar, improves user experience and feels.
Description
Technical Field
The present application relates to the field of noise reduction technologies, and in particular, to a method, a system, an apparatus, and a medium for reducing noise of a fan of a head-mounted display device.
Background
With the rise of the concept of "metass", virtual Reality (VR for short) products enter people's lives, and VR products get rid of the limitation attached to other computing terminals, achieve the characteristics of wireless data transmission, real-time computing processing, light product size and the like, and quickly occupy the market. As VR products are becoming smaller and more portable, product heat dissipation issues become critical.
At present, a fan with high rotation speed is generally adopted for heat dissipation in consideration of the volume, weight and the like of VR product equipment. However, when the fan is used for heat dissipation, the problem of fan noise cannot be avoided, and the fan noise can cause serious influence when a user uses a VR product for game or video entertainment, so that the user experience is reduced.
Therefore, how to reduce the fan noise of the VR product and improve the user experience is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The application aims to provide a fan noise reduction method, a fan noise reduction system, a fan noise reduction device and a fan noise reduction medium for head-mounted display equipment, so that the fan noise of the head-mounted display equipment is reduced, and the user experience is improved.
In order to solve the above technical problem, the present application provides a noise reduction method for a fan of a head-mounted display device, which is applied to a noise reduction system for a fan including a noise reduction speaker, a first sound pickup module, and an embedded second sound pickup module and a control unit, the embedded second sound pickup module and the control unit being disposed at the head-mounted display device and close to the ears of a person, and the noise reduction system includes:
receiving a first fan noise signal captured by the first pickup module and/or a second fan noise signal captured by the second pickup module; the first fan noise signal is a noise signal actually generated by the fan, and the second fan noise signal is a noise signal of the fan actually received by a user;
and when 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 horn so that the noise reduction horn outputs an opposite sound signal to reduce the noise of the fan.
Preferably, the determining that the first fan noise signal satisfies a first preset condition and/or the second fan noise signal satisfies a second preset condition includes:
acquiring the rotating speed gear of the fan and the number of blades of the fan;
determining a noise sound pressure level corresponding to the first fan noise signal and/or the second fan noise signal according to the rotating speed gear and the number of the 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;
and 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.
Preferably, after the 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, the method further comprises:
filtering the first fan noise signal and the second fan noise signal.
In order to solve the above technical problem, the present application further provides a fan noise reduction system for a head-mounted display device, including: the device comprises a noise reduction loudspeaker, a first sound pickup module, a second sound pickup module and a control unit;
the noise reduction loudspeaker is used for outputting an opposite sound signal to reduce the noise of the fan after receiving the noise reduction signal of the control unit;
the first pickup module is used for capturing a first fan noise signal and transmitting the first fan noise signal to the control unit; wherein the first fan noise signal is a noise signal actually generated by the fan;
the second sound pickup module is arranged on the head-mounted display device in an embedded manner, is close to the ear of a human body, and is used for capturing a second fan noise signal actually received by a user and transmitting the second fan noise signal to the control unit;
the control unit is respectively connected with the noise reduction loudspeaker, the first pickup module and the second pickup module and used for sending the noise reduction signal to the noise reduction loudspeaker when the first fan noise signal meets a first preset condition and/or the second fan noise signal meets a second preset condition.
Preferably, the number of the noise reduction horns is two, and each noise reduction horn is arranged on the fan blade peripheral base.
Preferably, the number of the first sound pickup modules is two, each of the first sound pickup modules is disposed on the fan blade peripheral base, and the first sound pickup module and the noise reduction speaker are respectively disposed at two end points of the diameter of the circular plane where the fan blade peripheral base is located.
Preferably, the second pickup module is a microphone, the number of the microphones is two, and the two microphones are respectively arranged at the positions close to the left ear and the right ear of the user.
In order to solve the above technical problem, the present application further provides a noise reduction device for a fan of a head-mounted display device, including:
a receiving module, configured to receive 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; the first fan noise signal is a noise signal actually generated by the fan, and the second fan noise signal is a noise signal of the fan actually received by a user;
and the sending module is used for sending a noise reduction signal to the noise reduction horn so that the noise reduction horn outputs an opposite sound signal to reduce the noise of the fan when the first fan noise signal is determined to meet a first preset condition and/or the second fan noise signal is determined to meet a second preset condition.
In order to solve the above technical problem, the present application further provides a VR product, comprising a memory for storing a computer program;
a processor for implementing the steps of the fan noise reduction method of the head-mounted display device when executing the computer program.
In order to solve the above technical problem, the present application further provides a computer-readable storage medium, where a computer program is stored, and the computer program, when executed by a processor, implements the steps of the fan noise reduction method for a head-mounted display device.
The invention provides a fan noise reduction method of head-mounted display equipment, which is applied to a fan noise reduction system comprising a noise reduction loudspeaker, a first sound pickup module, a second sound pickup module and a control unit, wherein the second sound pickup module is embedded in the head-mounted display equipment and is close to the ear of a human body, and the fan noise reduction system comprises: 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 the fan noise reduction system, wherein the first fan noise signal is a noise signal actually generated by a fan, and the second fan noise signal is a noise signal of the fan actually received by a user. If the first fan noise signal meets the first preset condition and/or the second fan noise signal meets the second preset condition, sending a noise reduction signal to the noise reduction loudspeaker so that the noise reduction loudspeaker outputs an opposite sound signal to reduce the noise of the fan. Therefore, according to the technical scheme, the noise actually generated by the fan captured by the first pickup module and/or the fan noise actually received by the user captured by the second pickup module are acquired, when the noise actually generated by the fan meets the first preset condition and/or the noise actually received by the user meets the second preset condition, the noise reduction loudspeaker is controlled to output the opposite sound signal so as to reduce the noise of the fan, and the user experience is improved.
In addition, the application also provides a fan noise reduction system, a device and a medium of the head-mounted display device, which correspond to the fan noise reduction method of the head-mounted display device, and the effects are the same as the above.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings required for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a fan noise reduction method for a head-mounted display device according to an embodiment of the present disclosure;
fig. 2 is a structural diagram of a fan noise reduction unit according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a second sound pickup module according to an embodiment of the present disclosure;
fig. 4 is a structural diagram of a fan noise reduction device of a head-mounted display device according to an embodiment of the present disclosure;
fig. 5 is a block diagram of a VR product provided in another embodiment of the present application;
the reference numbers are as follows: 1 is the fan blade, 2 is for making an uproar loudspeaker of falling, 3 is first pickup module, 4 are second pickup module, and 5 are wear display device.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a fan noise reduction method, a system, a device and a medium for head-mounted display equipment, wherein a first fan noise signal actually generated by a fan captured by a first sound pickup module and a second fan noise signal actually received by a user captured by a second sound pickup module are received, and when 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 a noise reduction loudspeaker for noise reduction.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
Along with the continuous development of science and technology, the VR product gets into people's life, and the VR product is in order to break away from the restriction of depending on other calculation terminals, accomplishes characteristics such as data wireless transmission, calculation real-time processing and product volume are light and handy, occupies the market rapidly. As VR products are becoming smaller and more portable, product heat dissipation issues become critical.
At present, a fan with high rotating speed is generally adopted for heat dissipation in consideration of the volume, weight and the like of VR product equipment. However, when the fan is used for heat dissipation, the problem of fan noise cannot be avoided, and the fan noise can cause serious influence when a user uses a VR product for game or video entertainment, so that the user experience is reduced.
Therefore, in order to reduce the fan noise of a VR product and improve the user experience, the embodiment of the application provides a fan noise reduction method of a head-mounted display device, and when it is determined that the fan noise actually generated by a fan meets a first preset condition and/or the fan noise actually received by a user meets a second preset condition, a noise reduction signal is sent to a noise reduction loudspeaker to reduce the noise of the fan.
Fig. 1 is a flowchart of a fan noise reduction method for a head-mounted display device according to an embodiment of the present disclosure, where the 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 a human ear, and a control unit, as shown in fig. 1, the method includes:
s10: receiving a first fan noise signal captured by a first pickup module and/or a second fan noise signal captured by a second pickup module; the first fan noise signal is a noise signal actually generated by the fan, and the second fan noise signal is a noise signal of the fan actually received by the user.
In a specific embodiment, a first fan noise signal actually generated by a heat dissipation fan in a wearable product captured by a first sound pickup module is received, and a second fan noise signal actually received by a user captured by a second sound pickup module is received. The first sound pickup module may be a microphone, or may be another element that can collect sound, which is not limited in this application. It can be understood that, in order to ensure that the captured first fan noise is as close as possible to the noise actually generated by the fan, the first sound pickup module is disposed at the fan base, that is, the first sound pickup module is ensured to be as close as possible to the noise source generated by the fan.
In addition, the second sound pickup module can also be a microphone, and the second sound pickup module is embedded and arranged on the head-wearing product, and 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, two second sound pickup modules are arranged, and the second sound pickup modules are respectively arranged at positions close to human ears, namely, at positions close to the left ear and the right ear.
In fact, when the first fan noise and the second fan noise are acquired, the acoustic signals of other non-fan noises cannot be acquired inevitably, so that after the first fan noise and the second fan noise are acquired, the first fan noise and the second fan noise need to be filtered so as to filter the acoustic signals of other fan noises, and therefore the noise reduction accuracy is improved.
S11: and when the first fan noise signal meets the first preset condition and/or the second fan noise signal meets the second preset condition, sending a noise reduction signal to the noise reduction horn so that the noise reduction horn outputs an opposite sound signal to reduce the noise of the fan.
After the first fan noise signal and the second fan noise signal are received through the step S10, it is determined whether the first fan noise signal meets a first preset condition and/or whether the second fan noise signal meets a second preset condition, and if so, a noise reduction signal is sent to the noise reduction horn, so that the noise reduction horn outputs an opposite sound signal to reduce the noise of the fan.
It should be noted that the captured first fan noise signal and the captured second fan noise signal are signals similar to sine waves, so that when the noise signals are reduced, the noise reduction horn is required to output opposite acoustic signals for cancellation, thereby achieving the effect of noise reduction. 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, the rotation speed gear of the fan and the number of blades of the fan are obtained first, and the noise sound pressure level corresponding to the first fan noise signal and/or the second fan noise signal is determined 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, and 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.
It is understood that when analyzing the noise signal, the analysis is performed from two dimensions of noise frequency and noise sound pressure level, wherein the noise sound pressure level is understood as the magnitude of the noise. And controlling the noise horn to output opposite sound signals for noise reduction according to the noise frequency section generating the noise when determining whether the first fan noise signal meets a first preset condition and/or whether the second fan noise signal meets a second preset condition and determining the noise frequency corresponding to the noise sound pressure level meeting the preset conditions.
The fan noise reduction method of wearing display device that this application embodiment provided is applied to including making an uproar loudspeaker, first pickup module, embedded setting in wearing display device and being close to the fan noise reduction system of second pickup module and the control unit of people's ear department of making an uproar, 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 the fan noise reduction system, wherein the first fan noise signal is a noise signal actually generated by a fan, and the second fan noise signal is a noise signal of the fan actually received by a user. If the first fan noise signal meets the first preset condition and/or the second fan noise signal meets the second preset condition, sending a noise reduction signal to the noise reduction loudspeaker so that the noise reduction loudspeaker outputs an opposite sound signal to reduce the noise of the fan. Therefore, according to the technical scheme, the noise actually generated by the fan captured by the first pickup module and/or the fan noise actually received by the user captured by the second pickup module are acquired, when the noise actually generated by the fan meets the first preset condition and/or the noise actually received by the user meets the second preset condition, the noise reduction loudspeaker is controlled to output the opposite sound signal so as to reduce the noise of the fan, and the user experience is improved.
In one embodiment, the noise signal due to the fan is related to the speed of the fan and the number of fan blades, wherein the speed of the fan corresponds to different speed steps. 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, the related parameters of the fan, that is, the rotation speed gear and the number of blades of the fan, are obtained first, and then 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 is determined according to the rotation speed gear and the number of blades.
It can be understood that the noise sound pressure level represents the magnitude of the noise, and 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, and at this time, the noise reduction signal is sent to the noise reduction loudspeaker, so that the noise reduction loudspeaker performs noise reduction.
When the first fan noise signal is greater than the first preset value, the noise signal actually generated by the fan is represented to be too large, and at the moment, the noise reduction loudspeaker needs to be controlled to reduce noise. And when the second fan noise signal is greater than the second preset value, the noise signal that the representation user actually received is too big, namely the noise that user's ears heard is too big, in order to improve user experience and feel, sends the signal of making an uproar to fall and falls the loudspeaker of making an uproar and fall and make an uproar equally.
In fact, when the user continuously uses the head-mounted product, since the fan noise is always in the working state, the fan noise is continuously generated, and therefore the first fan noise signal captured by the first sound pickup module always meets the first preset condition, that is, the noise reduction speaker is in the process of continuously reducing the noise. When the second pickup module catches that the fan noise signal that the user actually received is too high, control and fall the loudspeaker of making an uproar and fall the noise lower. In fact, the second pickup module is a feedback calibration process, and feeds back the noise signal actually heard by the user, so that the noise is further reduced, and the user experience is further improved.
According to the fan noise reduction method of the head-mounted display device, the noise sound pressure levels corresponding to the first fan noise signal and the second fan noise signal are determined according to the rotating speed gear of the fan and the number of the blades of the fan, when the noise sound pressure level corresponding to the first fan noise signal is larger than a first preset value or the noise sound pressure level corresponding to the second fan noise signal is larger than a second preset value, the noise of the fan is determined to be too large, at the moment, a noise reduction signal is sent to a noise reduction loudspeaker to reduce the noise of the fan, therefore, noise reduction is carried out according to the noise sound pressure level actually generated by the captured fan, feedback noise reduction is carried out through the fan noise actually received by a user, the noise reduction reliability and the noise reduction effect are improved, and further the user experience is improved.
In fact, when the first sound pickup module captures a first fan noise signal actually generated by the fan, noise generated by the noise reduction speaker or noise generated by the head-mounted product may be captured at the same time. Of course, when capturing the second fan noise signal actually received by the user, the second sound pickup module may capture the sound of the head-mounted product playing video or audio and may capture the noise of the surrounding environment. Therefore, misjudgment of the noise sound pressure levels corresponding to the first fan noise signal and the second fan noise signal is caused.
In order to avoid misjudgment of the noise sound pressure level, in the embodiment of the present application, after receiving the first fan noise signal and the second fan noise signal, the first fan noise signal and the second fan noise signal are filtered to filter the interference of noise.
According to the fan noise reduction method of the head-mounted display device, after 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 are received, the first fan noise signal and the second fan noise signal are filtered, the influence of noise on the noise sound pressure level is avoided, and the noise reduction accuracy is improved.
In the foregoing embodiment, a fan noise reduction method for a head-mounted display device is described in detail, and the present application also provides an embodiment corresponding to the fan noise reduction system for a head-mounted display device.
The system comprises a noise reduction loudspeaker, a first pickup module, a second pickup module and a control unit. Wherein, the loudspeaker of making an uproar, first pickup module and fan main part of making an uproar have constituted the fan and have fallen the unit of making an uproar, and the control unit is connected with the loudspeaker of making an uproar, first pickup module and second pickup module of making an uproar respectively to set up inside wearing display device. The first pickup module is used for capturing a first fan noise signal actually generated by the fan and transmitting the first fan noise signal to the control unit, and the second pickup module is embedded in the head-mounted display device and close to the ear of a person and used for capturing a second fan noise signal actually received by a user and transmitting the second fan noise signal to the control unit.
When the control module receives the first fan noise signal and the second fan noise signal, if the first fan noise signal meets the first preset condition and/or the second fan noise signal meets the second preset condition, the control module sends a noise reduction signal to the noise reduction loudspeaker so as to output an opposite sound signal after the noise reduction signal to reduce the noise of the fan.
The fan noise reduction system of head-mounted display equipment that this application embodiment provided includes: the device comprises a noise reduction loudspeaker, a first pickup module, a second pickup module and a control unit. The utility model discloses a loudspeaker of making an uproar falls, be used for the noise of the opposite sound signal of output in order to reduce the fan after receiving the signal of making an uproar that falls of control unit, a first pickup module, a first fan noise signal for catching the actual production of fan, a second pickup module, embedded setting is in wearing display device and being close to people's ear department, a second fan noise signal for catching the actual receipt of user, and with second fan noise signal transmission to the control unit, the control unit respectively with fall the loudspeaker of making an uproar, first pickup module and second pickup module are connected, a loudspeaker of making an uproar falls in the time of confirming that first fan noise signal satisfies first preset condition and/or second fan noise signal satisfies the second preset condition, send the signal of making an uproar to fall. Therefore, when the noise actually generated by the fan and the fan noise actually received by a user are too large, the noise is reduced by outputting the opposite sound signal through the noise reduction loudspeaker, and the experience of the user using the head-mounted display device is improved.
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 horn. Fig. 2 is a structural diagram of a fan noise reduction unit provided in an embodiment of the present application, and as shown in fig. 2, a noise reduction speaker 2 and a first sound pickup module 3 are both disposed on a base at the periphery of a fan blade 1.
Of course, for better capturing the first fan noise signal and ensuring the noise reduction effect, the number of the first sound pickup module 3 and the number of the noise reduction speakers 2 may be set to two. In specific implementation, because some fans in the head-mounted display device are small in size, the noise reduction effect of one first sound pickup module 3 and one noise reduction loudspeaker 2 may be good, and therefore, the number of the first sound pickup module 3 and the number of the noise reduction loudspeaker 2 may be set according to actual conditions, which is not limited in this application.
It can be understood that, when the noise reduction speaker 2 works to output an opposite sound signal, a certain noise is inevitably generated, and therefore, in order to avoid that the first sound pickup module 3 captures the noise signal of the first fan including the noise generated when the noise reduction speaker 2 works, because the fan rotation plane is generally 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 peripheral base of the fan blade 1 is located.
The embodiment of the application provides a wear display device's fan noise reduction system will fall the loudspeaker of making an uproar and first pickup module and all set up on fan blade peripheral base, and quantity all sets up to two, when the improvement catches first fan noise signal accuracy from this, improves the noise reduction effect. In addition, set up first pickup module and the loudspeaker of making an uproar of falling respectively in two tip departments of fan blade peripheral base place circular plane diameter, avoid first pickup module when catching first fan noise signal, catch the noise that the loudspeaker of making an uproar produced of falling, and then improve the fan noise reduction effect of wearing display device.
In specific implementation, in order to ensure that the fan noise reduction effect reaches the acceptable range of the user, according to the technical scheme provided by the embodiment of the application, a second sound pickup module is arranged on the head-mounted display device and used for capturing a second fan noise signal actually received by the user.
Fig. 3 is a schematic diagram illustrating a second sound pickup module according to an embodiment of the present disclosure, and as shown in fig. 3, the second sound pickup module 4 is embedded in the head-mounted display device 5, and in order to better capture a second fan noise signal actually received by the user, the two second sound pickup modules 4 are disposed near the left ear and the right ear of the user, respectively. The second sound pickup module 4 may be a microphone or other elements for capturing sound, and the present application is not limited thereto.
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, and when the noise sound pressure level corresponding to the second fan noise signal satisfies the condition, the noise reduction speaker is controlled to reduce the noise, so as to form a feedback loop, continuously correct the generated noise, and ensure that the fan noise signal actually received by the user is within an acceptable range.
The fan noise reduction system of wear display device that this application embodiment provided, second pickup module are the microphone, and the microphone is two, sets up two microphones respectively in being close to user's left ear and right ear department. Guarantee that the second fan noise signal that second pickup module caught is close to the fan noise signal that the user actually received as far as possible, improve fan noise reduction effect, and then promote user experience and feel.
In the foregoing embodiment, a method for reducing noise of a fan of a head-mounted display device is described in detail, and the present application also provides an embodiment corresponding to the fan noise reducing apparatus of the head-mounted display device. It should be noted that the present application describes the embodiments of the apparatus portion from two perspectives, one is based on the functional module, and the other is based on the hardware structure.
Fig. 4 is a structural diagram of a noise reduction device for a fan of a head-mounted display device according to an embodiment of the present application, and as shown in fig. 4, the noise reduction device includes:
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; the first fan noise signal is a noise signal actually generated by a fan, and the second fan noise signal is a noise signal of the fan actually received by a user;
the sending module 11 is configured to send a noise reduction signal to the noise reduction horn so that the noise reduction horn outputs an opposite sound signal to reduce the noise of the fan when it is determined that the first fan noise signal satisfies a first preset condition and/or the second fan noise signal satisfies a second preset condition.
Since the embodiment of the apparatus portion and the embodiment of the method portion correspond to each other, please refer to the description of the embodiment of the method portion for the embodiment of the apparatus portion, and details are not repeated here.
The device of making an uproar falls in fan of head mounted display equipment that this application embodiment provided 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 the fan noise reduction system, wherein the first fan noise signal is a noise signal actually generated by a fan, and the second fan noise signal is a noise signal of the fan actually received by a user. If the first fan noise signal meets the first preset condition and/or the second fan noise signal meets the second preset condition, sending a noise reduction signal to the noise reduction loudspeaker so that the noise reduction loudspeaker outputs an opposite sound signal to reduce the noise of the fan. Therefore, according to the technical scheme, 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 are acquired, when the noise actually generated by the fan meets the first preset condition and/or the noise actually received by the user meets the second preset condition, the noise reduction loudspeaker is controlled to output the opposite sound signal so as to reduce the noise of the fan, and then the user experience is improved.
Fig. 5 is a block diagram of a VR product according to another embodiment of the present application, and as shown in fig. 5, the VR product includes: a memory 20 for storing a computer program;
a processor 21, configured to implement the steps of the fan noise reduction method for a head-mounted display device as mentioned in the above embodiments when executing the computer program.
The VR product provided by this embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, or a desktop computer.
The processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The Processor 21 may be implemented in at least one hardware form of a Digital Signal Processor (DSP), a Field-Programmable Gate Array (FPGA), and a Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with an image processor (GPU), and the GPU is responsible for rendering and drawing content required to be displayed on the display screen. In some embodiments, the processor 21 may further include an Artificial Intelligence (AI) processor for processing computing operations related to machine learning.
Memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used for storing a computer program 201, wherein after being loaded and executed by the processor 21, the computer program is capable of implementing relevant steps of the fan noise reduction method for a head-mounted display device disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202, data 203, and the like, and the storage manner may be a transient storage manner or a permanent storage manner. Operating system 202 may include, among others, windows, unix, linux, and the like. Data 203 may include, but is not limited to, relevant data involved in a fan noise reduction method of a head mounted display device.
In some embodiments, the VR product may also include a display 22, an input-output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.
Those skilled in the art will appreciate that the structure shown in fig. 5 does not constitute a limitation of VR products and may include more or fewer components than those shown.
The VR product provided by the embodiment of the application includes a memory and a processor, and when the processor executes a program stored in the memory, the processor can implement the following method: provided is a fan noise reduction method of a head-mounted display device.
The noise reduction device of wear display device's fan that this application embodiment provided, through the fan noise that acquires the actual noise that produces of fan that first pickup module was caught and/or the fan noise that the user that the second pickup module was caught actually received, when the noise that the fan actually produced satisfies first predetermined condition and/or the noise of the fan that the user was actually received satisfies the second predetermined condition, the control falls the noise loudspeaker output opposite sound signal of making an uproar in order to reduce the noise of fan, and then improves user experience and feels.
Finally, the application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as set forth in the above-mentioned method embodiments.
It is understood that, if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium and executes all or part of the steps of the methods described in the embodiments of the present application, or all or part of the technical solutions. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other media capable of storing program codes.
The above detailed description is provided for a method, a system, a device and a medium for reducing noise of a fan of a head-mounted display device. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. The utility model provides a wear display device's fan noise reduction method, its characterized in that, is applied to including falling the loudspeaker of making an uproar, first pickup module, embedded setting in wear display device and be close to the fan noise reduction system of second pickup module and the control unit of people's ear department, includes:
receiving a first fan noise signal captured by the first pickup module and/or a second fan noise signal captured by the second pickup module; the first fan noise signal is a noise signal actually generated by the fan, and the second fan noise signal is a noise signal of the fan actually received by a user;
and when 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 horn so that the noise reduction horn outputs an opposite sound signal to reduce the noise of the fan.
2. The method of claim 1, wherein the determining that the first fan noise signal satisfies a first preset condition and/or the second fan noise signal satisfies a second preset condition comprises:
acquiring a rotating speed gear of the fan and the number of blades of the fan;
determining a noise sound pressure level corresponding to the first fan noise signal and/or the second fan noise signal according to the rotating speed gear and the number of the 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;
and 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.
3. The method of reducing fan noise for a head-mounted display device according to claim 2, further comprising, after the receiving the first fan noise signal captured by the first pickup module and/or the second fan noise signal captured by the second pickup module:
filtering the first fan noise signal and the second fan noise signal.
4. A fan noise reduction system for a head-mounted display device, comprising: the device comprises a noise reduction loudspeaker, a first sound pickup module, a second sound pickup module and a control unit;
the noise reduction loudspeaker is used for outputting an opposite sound signal to reduce the noise of the fan after receiving the noise reduction signal of the control unit;
the first pickup module is used for capturing a first fan noise signal and transmitting the first fan noise signal to the control unit; wherein the first fan noise signal is a noise signal actually generated by the fan;
the second sound pickup module is embedded in the head-mounted display device and close to the ear of a person, and is used for capturing a second fan noise signal actually received by the user and transmitting the second fan noise signal to the control unit;
the control unit is respectively connected with the noise reduction loudspeaker, the first pickup module and the second pickup module and used for sending the noise reduction signal to the noise reduction loudspeaker when the first fan noise signal meets a first preset condition and/or the second fan noise signal meets a second preset condition.
5. The system of claim 4, wherein the number of the noise reduction horns is two, and each of the noise reduction horns is disposed on the fan blade peripheral base.
6. The system of claim 5, wherein the number of the first sound pickup modules is two, each of the first sound pickup modules is disposed on the fan blade peripheral base, and the first sound pickup module and the noise reduction speaker are respectively disposed at two end points of a diameter of a circular plane where the fan blade peripheral base is located.
7. The fan noise reduction system of claim 4, wherein the second sound pickup module is two microphones, and the two microphones are respectively disposed near the left ear and the right ear of the user.
8. A fan noise reduction device for a head-mounted display device, comprising:
a receiving module, configured to receive 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; the first fan noise signal is a noise signal actually generated by the fan, and the second fan noise signal is a noise signal of the fan actually received by a user;
and the sending module is used for sending a noise reduction signal to the noise reduction horn so that the noise reduction horn outputs an opposite sound signal to reduce the noise of the fan when the first fan noise signal is determined to meet a first preset condition and/or the second fan noise signal is determined to meet a second preset condition.
9. A VR product comprising a memory for storing a computer program;
a processor for implementing the steps of the fan noise reduction method for a head mounted display device according to any of claims 1 to 3 when executing the computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method for fan noise reduction of a head-mounted display device according to any one of claims 1 to 3.
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| CN116221160A (en) * | 2023-01-06 | 2023-06-06 | 歌尔股份有限公司 | Fan noise adjusting method and device, head-mounted display device and storage medium |
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| CN116221160A (en) * | 2023-01-06 | 2023-06-06 | 歌尔股份有限公司 | Fan noise adjusting method and device, head-mounted display device and storage medium |
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