CN213092812U - Snore active noise control system based on remote microphone technology - Google Patents
Snore active noise control system based on remote microphone technology Download PDFInfo
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- CN213092812U CN213092812U CN202021776969.5U CN202021776969U CN213092812U CN 213092812 U CN213092812 U CN 213092812U CN 202021776969 U CN202021776969 U CN 202021776969U CN 213092812 U CN213092812 U CN 213092812U
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Abstract
The utility model provides an active noise control system of snore based on remote microphone technique installs at the head of a bed, include: the first active noise control subsystem and the second active noise control subsystem are composed of two parts, are respectively fixed on the bed head and are arranged in the noise reduction box body, and can independently operate; the first active noise control subsystem and the second active noise control subsystem each include: a reference microphone, a plurality of secondary speakers, a plurality of error microphones, and an active noise controller. The control system uses a remote microphone technology, so that the sleeping comfort is ensured, the distance between the error microphone and the left and right ears of the snorer partner is increased, and the maximum noise reduction amount can be obtained at the left and right ears of the snorer partner and a mute zone in a certain range even if the error microphone is not placed at the left and right ears of the snorer partner.
Description
Technical Field
The utility model belongs to the technical field of active noise control, especially an active noise control system of snore based on remote microphone technique.
Background
Snoring, a common noise in daily life, is commonly called "snoring", is caused by air exchange blockage of various degrees due to unsmooth breathing after a person is asleep, and is a common sleeping phenomenon. Snoring, although intermittent, can reach sound pressure levels as high as 90-100 dB. When the partner of the snorer is in such a noisy environment, the sleep quality of the partner is seriously impaired, and the normal work and life of the partner on the next day are affected, so that the physical and psychological health of the partner is threatened in the long run.
The prior art has no effective medical means for radically treating snore. In order to reduce the harm of snore to the sleep of a partner of a snorer, some active noise reduction earplugs/earphones are available for wearing when the partner sleeps, but the device is easy to fall off when the partner sleeps. Prolonged wearing of such devices can be uncomfortable, can cause infections of the ear canal (otitis externa or otitis media), can lead to hearing loss, and can even cause meningitis and the like. In addition, snore relieving devices (braces, wristbands, supra-aural, etc.) may also be used to reduce snoring by interfering with the snorer's sleep. When the snore stopping device detects that the human body starts to snore, the snore stopping device can wake up the snorer in a mode of electric shock or sound vibration, although the method can temporarily stop the snore, the snore stopping method has no doubt that the snorer can sacrifice the sleep quality of the snorer, and therefore the snore stopping method is not an optimal scheme for solving the snore trouble.
Some active noise reduction bed heads of current use the speaker to reduce the snore as secondary sound source through arranging on the bed head, but the noise reduction bed head of making an uproar only has 3-5dB of noise reduction effect to the snore below 300Hz, and the scope of making an uproar is less, only limits in people's left and right ears, does not consider the noise reduction performance when people's head rotates even moves about.
Furthermore, US8325934B2 discloses a noise reduction pillow, which only reduces the noise of the left and right ears of the snorer partner when lying down, and does not consider the movement of the head, so the range of the mute zone formed after noise reduction is limited.
In summary, considering that the sleep posture adjustment is unconsciously performed to avoid fatigue of the human body after the human body enters the sleep state, the farther the head of the snorer partner deviates from the position with the maximum noise reduction amount, the more obvious the snore is heard, and the easier the sleep is affected. Therefore, it is necessary to expand the range of the silence area for noise reduction of snore and provide comfortable sleeping space for the partner of the snorer.
Disclosure of Invention
The utility model discloses to prior art's defect, provide a long-range snore active noise control system based on microphone technique, at the head of a bed installation snore active noise control system of double bed for fall the noise reduction to the snore, utilize long-range microphone technique, the silence district of certain limit is formed in the head region of the partner of the person of snoring, does not influence the rotation of its head again or remove the removal when guaranteeing to fall the noise.
An object of the utility model is to provide an active noise control system of snore based on remote microphone technique installs at the head of a bed, include:
the first active noise control subsystem and the second active noise control subsystem are used for reducing noise respectively under the condition that a partner of a snorer sleeps on the left half side or the right half side of a bed, and both the first active noise control subsystem and the second active noise control subsystem are composed of two parts, wherein one part is fixed on the head of the bed, the other part is arranged in a noise reduction box body (11, 12), and the noise reduction box body (11, 12) is arranged in the middle of the head of the bed; the first active noise control subsystem and the second active noise control subsystem can operate independently, and the snorer partner can use the subsystem facing the snorer partner to reduce the noise of the snore without influencing the sleep of the snorer.
Preferably, the first active noise control subsystem and the second active noise control subsystem each include:
the reference microphones (B1, B2) are arranged in the noise reduction box bodies (11, 12) in a built-in mode and are used for collecting original snore signals and using the original snore signals as input signals of the active noise controller (C1);
a plurality of secondary loudspeakers (A1, A2, A3, A4, A5, A6, A7 and A8) which are respectively arranged in the bed head and the rotary noise reduction box body, wherein the plurality of secondary loudspeakers positioned on the bed head and in the rotary noise reduction box body are mutually matched to reduce the noise of the positions of the left ear and the right ear of the partner of the snorer and form a mute area in a certain range in the head area;
a plurality of error microphones (E1, E2, E3, E4), wherein the error microphones are all fixed on the bedside, the distance between the left ear and the right ear of the snorer partner and the error microphones is increased by using a remote microphone technology, and the rotation or the left-right movement of the head of the snorer partner is not influenced while the noise reduction is realized, so that a quiet and comfortable sleeping environment is provided; and
an active noise controller (C1) built into the noise reduction cabinet (11, 12), the output of the active noise controller (C1) is connected with the secondary loudspeaker (A1, A2, A3, A4, A5, A6, A7, A8), and the first active noise control subsystem and the second active noise control subsystem share the active noise controller.
Preferably, the reference microphones (B1, B2) are reference microphones and are respectively disposed in noise reduction boxes of the first active noise control subsystem and the second active noise control subsystem.
Preferably, eight of the secondary loudspeakers (a1, a2, A3, a4, A5, A6, a7, A8) are provided, wherein four secondary loudspeakers (a1, a2, A3, a4) are arranged in the first active noise control subsystem, another four secondary loudspeakers (A5, A6, a7, A8) are arranged in the second active noise control subsystem, two of every four secondary loudspeakers (A3, a4 or a7, A8) are embedded in the bedside at a position facing the head of a person, and the other two secondary loudspeakers (a1, a2 or A5, A6) are arranged in the noise reduction box of the corresponding first active noise control subsystem and the second active noise control subsystem in the middle of the bedside.
Preferably, the first and second active noise control subsystems have two error microphones (E1, E2 or E3, E4), respectively, located directly below the plurality of secondary speakers (A3, a4 or a7, A8), respectively, on the head of the bed.
Preferably, both sides of the noise reduction box body (11, 12) are provided with control panels (F) for the snorer partner to use and control the active noise control system.
Preferably, the noise reduction box bodies (11 and 12) are rotary, the rotary noise reduction box bodies are embedded in the bed head, one end of each rotary noise reduction box body is connected with a cross beam of the bed head, and the other end of each rotary noise reduction box body can be rotated out of the bed head through a rotating shaft (G) so that the whole rotary noise reduction box body is stably placed on the bed and positioned between pillows of the snorers and the mate of the snorers; when the active noise control system is not used, the rotary noise reduction box body is embedded in the bed head, when the snore is required to be reduced, the rotary noise reduction box body can be screwed out from the bed head, and the noise reduction box body is stably placed on the bed and is positioned between pillows of the snorer and the partner.
Preferably, the reference microphone, the secondary speaker and the active noise controller are disposed inside the noise reduction case (11, 12).
Preferably, the noise reduction box body (11, 12) is filled with sound absorption cotton sound absorption materials.
The realization method of the snore active noise control system based on the remote microphone technology comprises the following steps:
step 1: computing an optimal observation filter OoptThe method comprises the following steps:
Step 13, removing the virtual error microphone: get the optimal observation filter OoptThen, removing the virtual error microphones at the left and right ear positions of the partner of the snorer, and reserving the physical error microphones in the subsystem on the bed head;
step 2: original snore d for snorer partner head areav(n) noise reduction.
Step 21, the active noise controller (C1) drives the secondary speaker (a1, a2, A3, a4 or a5, a6, a7, A8) to sound: transmitting the collected original snore signal x (n) by a reference microphone (B1 or B2)Into the active noise controller (C1), the active noise controller (C1) drives the secondary speaker facing the snorer partner to emit a secondary sound wave ym(n) original snore d from physically incorrect microphone position on bed headm(n) performing superposition;
step 22, extracting the original snore collected by the physical error microphone
Adding a secondary acoustic channel model from a secondary speaker to a physical error microphone in an active noise controller (C1)
Thereby canceling out the secondary sound wave y received by the physical error microphonem(n) extracting pure original snore
Step 23, for the original snore at the virtual error microphone
And (3) denoising: based on original snore extracted from physical error microphone
And said optimal observation filter OoptCalculating original snore at virtual error microphone
The device is used for realizing the noise reduction of the positions of the left and right ears of the partner of the snorer and forming a mute area in a certain range at the head of the partner of the snorer.
The utility model has the advantages that:
(1) the utility model provides an active noise control system comprises two parts: one part is fixed in the bed head, and the other part is arranged in the rotary noise reduction box body. When the active noise control system is not used, the rotary noise reduction box body is embedded in the bed head and is integrated with the bed head, so that the attractiveness of the bed head and the leaning comfort are not affected. When the snore is required to be denoised, the rotary denoising box body can be screwed out from the bed head, the rotary denoising box body can be stably placed on a bed and positioned between pillows of a snorer and a partner of the snorer after being screwed out, and then the active noise controller drives the secondary loudspeaker in the rotary denoising box body and the secondary loudspeaker in the bed head to emit secondary sound waves. This secondary sound wave is superimposed with the original snore to reduce the original snore.
(2) The utility model discloses install the active noise control system who designs on whole head of a bed, no matter the person partner of snore sleeps in which side of bed all can realize falling the making an uproar to original snore.
(3) When an active noise control system is used, an error microphone needs to be placed at a target noise reduction point to monitor the noise reduction performance of the active noise control system. The utility model provides a target noise point falls for the left and right ear of the partner of snorer, if directly put the error microphone in its left and right ear department and will be unfavorable for the normal activity of its head. The utility model discloses in merging the active noise control system with long-range microphone technique, use long-range microphone technique can use virtual error microphone in the primary sound field of only original snore, when starting active noise control system, can remove virtual error microphone and remain physical error microphone, thereby the left side of error microphone and snorer companion has been increased, distance between the auris dextra, even not on the left side of snorer companion, the error microphone is located to put in auris dextra, also can be on its left side, auris dextra position obtains the biggest noise reduction and forms the silence district of certain limit, do not influence the rotation of its head or remove about simultaneously, for it provides quiet comfortable sleep environment.
(4) The utility model provides an active noise control system's function not only limits in falling the noise of snoring, and it also can be used as sound equipment for play music etc. does and carries out human-computer interaction with the voice.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in view of the following description taken in conjunction with the accompanying drawings, in which
In the figure:
fig. 1 is a global schematic diagram of a double bed with an active noise control system according to an embodiment of the present invention.
Fig. 2 is according to the utility model discloses box global schematic diagram of making an uproar falls in rotation type.
Fig. 3 is a top view of the rotary noise reduction box according to the embodiment of the present invention.
Fig. 4 is an internal structure schematic diagram of the rotary noise reduction box according to the embodiment of the present invention.
Fig. 5 is a schematic diagram of a remote microphone technique according to an embodiment of the invention.
Fig. 6 is a control block diagram of an active noise control system according to an embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, which are not intended to limit the scope of the invention.
Referring to fig. 1, the snore active noise control system of this embodiment is composed of two parts, one of which is fixed on the head of the bed, and the other part is installed in the rotary noise reduction case 11, 12. The part fixed on the bed head is used for mounting the secondary loudspeakers A3, A4, A7 and A8 and the error microphones E1, E2, E3 and E4. Referring to fig. 2, the rotary noise reduction boxes 11, 12 are embedded in the bed head, one end of each of which is connected with the cross beam of the bed head, and the other end of each of which can be rotated from the inside of the bed head, so that the whole rotary noise reduction boxes 11, 12 can be stably placed on the bed and positioned between the pillows of the snorers and the partner. The interior of the rotary noise reduction box body is used for arranging a reference microphone, a secondary loudspeaker and an active noise controller.
Referring to fig. 3-4, the active noise control system installed on the bed head is divided into a left subsystem and a right subsystem, which can respectively reduce noise for the snorer partner sleeping on the left half or the right half of the bed. Each subsystem is made up of two parts, one of which is fixed to the head of the bed and the other of which is mounted in a rotating noise reduction housing 11, 12. Each subsystem contains one reference microphone B1 or B2, four secondary speakers a1-a4 or a5-a8 and two error microphones E1, E2 or E3, E4. The reference microphone B1, B2, in the form of a microphone, is built into the rotating noise reduction housing 11, 12 for picking up the original snore signal and using it as an input signal to the active noise controller C1. Two of the four secondary speakers a1-a4 or a5-A8, A3, a4 or a7, A8, each at a height from the position of the ears of a person lying flat on the pillow, within the head of the bed, the two secondary speakers being spaced approximately 20cm apart; two further secondary loudspeakers a1, a2 or a5, a6 are placed in the rotating noise reduction housing 11, 12 facing the snorer partner, at a height also corresponding to the position of the ears of a person lying flat on the pillow and at a distance of about 20 cm. The two error microphones E1, E2 or E3, E4 are fixed on the head of the bed, located directly below the two secondary loudspeakers A3, a4 or a7, A8, respectively, on the head of the bed, at a distance of about 2cm from each of the secondary loudspeakers A3, a4 or a7, A8. The two subsystems share an active noise controller C1, which is built into the rotating noise reduction housing 11, 12 at C1, the output of which is connected to the secondary speaker. The two sides of the rotary noise reduction box bodies 11 and 12 are provided with control panels F of active noise reduction systems for the partner of the snorer. When the snorer partner needs to use the active noise control system, the open/close key on the control panel F can be pressed, the rotary noise reduction box body can be screwed out from the bed head and is stably placed on the bed and positioned between the pillows of the snorer and the snorer partner, and the active noise controller C1 drives four secondary speakers A1, A2, A3, A4 or A5, A6, A7 and A8 facing the snorer partner to emit secondary sound waves to reduce the noise of the original snore.
Referring to fig. 5, the principle of remote microphone technology: aiming at the condition that an error microphone is inconvenient or not suitable to be placed at a target noise reduction point in a real scene, the error microphone can be placed at a position far away from the target noise reduction point and reasonable, and the original noise of the target noise reduction point can be obtained by calculating the error microphone at the far position and an optimal observation filter.
By using the remote microphone technology, the error microphones at the left and right ears of the partner of the snorer can be regarded as virtual error microphones, and the error microphones placed on the bed head can be regarded as physical error microphones. The virtual error microphone is only used in a primary sound field with only original snore, after the optimal observation filter is calculated, the virtual error microphone can be removed, only the physical error microphone is reserved, and after the active noise control system is started, the original snore at the virtual error microphone can be calculated through the physical error microphone. Therefore, after the remote microphone technology is integrated into the active noise control system, the distance between the error microphone and the left ear and the right ear of the partner of the snorer is increased, the maximum noise reduction amount is ensured to be obtained at the positions of the left ear and the right ear, a mute area in a certain range is formed, and the rotation or the left-right movement of the head of the snorer is not influenced.
This embodiment uses two error microphones mounted on the head of the bed in each subsystem as physical error microphones that are located further from the snorer partner's left and right ears so that the error microphones are located at an increased distance from the person's ears. And by utilizing the remote microphone technology, the original snore at the left ear and the right ear of the partner of the snorer can be obtained by calculation, so that the active noise control system can be ensured to obtain the maximum noise reduction amount at the left ear and the right ear, a mute area in a certain range is formed at the whole head of the active noise control system, and the partner of the snorer can be ensured to have enough free activity space when sleeping.
Referring to fig. 6, in this embodiment, a specific implementation method of the active noise control system and the remote microphone technology is as follows:
the first stage is as follows: computing an optimal observation filter Oopt。
(1) Placing an error microphone: in a primary sound field only having original snore, error microphones are placed at the positions of the left ear and the right ear of a partner of the snorer, and the error microphones are regarded as virtual error microphones; and regarding an error microphone arranged in a subsystem at one side of the snorer partner on the bed head as a physical error microphone.
(2) Computing an optimal observation filter Oopt: method for collecting original snore signals d in primary sound field by using physical error microphone and virtual error microphonem(n) and dv(n) and calculating an optimal observation filter O from the physical microphone to the virtual microphone using the acquired signalsopt。
(3) Removing the virtual error microphone: get the optimal observation filter OoptAnd then, removing the virtual error microphones at the left and right ear positions of the partner of the snorer, and reserving the physical error microphones in the subsystem on the bed head.
And a second stage: original snore d for snorer partner head areav(n) noise reduction.
(1) The active noise controller drives the secondary speaker to sound: the reference microphone transmits the collected original snore signal x (n) to the active noise controller, and the active noise controller drives the secondary loudspeaker facing the snorer partner to emit the secondary sound wave ym(n) original snore d from physically incorrect microphone position on bed headm(n) performing superposition.
(2) Extracting original snore collected by physical error microphone
When the noise of snore is reduced, the physical error microphone can collect the original snore signal dm(n) and can collect secondary sound wave y emitted by the secondary loudspeakerm(n) of (a). Therefore, a secondary sound channel model from a secondary loudspeaker to a physical error microphone needs to be added in the active noise controller
Thereby canceling out the secondary sound wave y received by the physical error microphonem(n) extracting pure original snore
(3) For original snore at virtual error microphone
And (3) denoising: using original snore extracted from physical error microphone
And an optimal observation filter OoptCalculating original snore at virtual error microphone
The device is used for realizing the noise reduction of the positions of the left ear and the right ear of the partner of the snorer and forming a mute area in a certain range on the head of the partner of the snorer.
The active noise control system proposed by the present embodiment is composed of two parts: one part is fixed in the bed head, and the other part is arranged in the rotary noise reduction box body. When the active noise control system is not used, the rotary noise reduction box body is embedded in the bed head and is integrated with the bed head, so that the attractiveness of the bed head and the leaning comfort are not affected. When the snore is required to be denoised, the rotary denoising box body can be screwed out from the bed head, the rotary denoising box body can be stably placed on a bed and positioned between pillows of a snorer and a partner of the snorer after being screwed out, and then the active noise controller drives the secondary loudspeaker in the rotary denoising box body and the secondary loudspeaker in the bed head to emit secondary sound waves. This secondary sound wave is superimposed with the original snore to reduce the original snore. The designed active noise control system is arranged on the whole bed head, so that the noise reduction of the original snore can be realized no matter which side of the bed the snorer partner sleeps. When an active noise control system is used, an error microphone needs to be placed at a target noise reduction point to monitor the noise reduction performance of the active noise control system. The utility model provides a target noise point falls for the left and right ear of the partner of snorer, if directly put the error microphone in its left and right ear department and will be unfavorable for the normal activity of its head. The remote microphone technology is integrated into the active noise control system, the virtual error microphone can be used in a primary sound field only with original snore by using the remote microphone technology, and when the active noise control system is started, the virtual error microphone can be removed and the physical error microphone can be reserved, so that the distance between the error microphone and the left and right ears of the snorer partner is increased, even if the error microphone is not placed at the left and right ears of the snorer partner, the maximum noise reduction amount can be obtained at the positions of the left and right ears of the snorer partner, a silence area in a certain range is formed, the rotation or the left and right movement of the head of the snorer partner is not influenced, and a quiet sleeping environment is provided for the snorer partner.
Certainly, the function of the active noise control system designed in this embodiment is not limited to reducing noise of snoring, but it can also be used as a sound device for playing music and the like, and can also perform human-computer interaction with voice.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, a person skilled in the art can change the embodiments and the application ranges according to the embodiments of the present invention, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A snore active noise control system based on remote microphone technology is installed at a bed head and is characterized by comprising:
the first active noise control subsystem and the second active noise control subsystem are used for reducing noise respectively under the condition that a partner of a snorer sleeps on the left half side or the right half side of a bed, and both the first active noise control subsystem and the second active noise control subsystem are composed of two parts, wherein one part is fixed on the head of the bed, the other part is arranged in a noise reduction box body (11, 12), and the noise reduction box body (11, 12) is arranged in the middle of the head of the bed; the first active noise control subsystem and the second active noise control subsystem can operate independently, and the snorer partner can use the subsystem facing the snorer partner to reduce the noise of the snore without influencing the sleep of the snorer.
2. The active snore noise control system of claim 1, wherein the first active noise control subsystem and the second active noise control subsystem each comprise:
the reference microphones (B1, B2) are arranged in the noise reduction box bodies (11, 12) in a built-in mode and are used for collecting original snore signals and using the original snore signals as input signals of the active noise controller (C1);
the secondary speakers are respectively arranged on the bed head and in the rotary noise reduction box body, the secondary speakers positioned on the bed head and in the rotary noise reduction box body are mutually matched to reduce the noise of the positions of the left ear and the right ear of the snorer partner, and form a mute area in a certain range in the head area of the snorer partner, and the secondary speakers comprise a first secondary speaker (A1), a second secondary speaker (A2), a third secondary speaker (A3), a fourth secondary speaker (A4), a fifth secondary speaker (A5), a sixth secondary speaker (A6), a seventh secondary speaker (A7) and an eighth secondary speaker (A8);
a plurality of error microphones, each of the plurality of error microphones being fixed to the head of the bed, the distance between the left and right ears of the snorer partner and the error microphone being increased using remote microphone technology, and the rotation or left-right movement of the head of the snorer partner being not affected while noise reduction is achieved, thereby providing a quiet and comfortable sleeping environment, the plurality of error microphones including a first error microphone (E1), a second error microphone (E2), a third error microphone (E3), and a fourth error microphone (E4); and
an active noise controller (C1) built into the noise reduction cabinet (11, 12), the output of the active noise controller (C1) being connected to the plurality of secondary speakers, the active noise controller being shared by the first active noise control subsystem and the second active noise control subsystem.
3. The snore active noise control system based on remote microphone technology as claimed in claim 2, wherein: the reference microphones (B1, B2) are reference microphones and are respectively arranged in noise reduction boxes of the first active noise control subsystem and the second active noise control subsystem.
4. The snore active noise control system based on remote microphone technology as claimed in claim 2, wherein: the first secondary loudspeaker (A1), the second secondary loudspeaker (A2), the third secondary loudspeaker (A3) and the fourth secondary loudspeaker (A4) are arranged in the first active noise control subsystem, the fifth secondary loudspeaker (A5), the sixth secondary loudspeaker (A6), the seventh secondary loudspeaker (A7) and the eighth secondary loudspeaker (A8) are arranged in the second active noise control subsystem and are arranged in the four secondary loudspeakers in the first active noise control subsystem, the third secondary loudspeaker (A3) and the fourth secondary loudspeaker (A4) are embedded in the bedside at positions opposite to the head of a person, and the first secondary loudspeaker (A1) and the second secondary loudspeaker (A2) are arranged in the noise reduction box corresponding to the first active noise control subsystem in the middle of the bedside; and the fifth secondary loudspeaker (A5) and the sixth secondary loudspeaker (A6) are arranged in the middle of the bedside and correspond to the noise reduction box body of the second active noise control subsystem.
5. The snore active noise control system based on remote microphone technology as claimed in claim 2, wherein: the first active noise control subsystem has a first error microphone (E1) and a second error microphone (E2), and the second active noise control subsystem has a third error microphone (E3) and a fourth error microphone (E4).
6. The snore active noise control system based on remote microphone technology as claimed in claim 2, wherein: two sides of the noise reduction box bodies (11, 12) are respectively provided with a control panel (F) for the partner of the snorer to use and control the active noise control system.
7. The snore active noise control system based on remote microphone technology as claimed in claim 2, wherein: the noise reduction box bodies (11, 12) are rotary, the rotary noise reduction box bodies are embedded in the bed head, one ends of the rotary noise reduction box bodies are connected with a cross beam of the bed head, and the other ends of the rotary noise reduction box bodies can be rotated from the inside of the bed head through a rotating shaft (G) so that the whole rotary noise reduction box body is stably placed on the bed and is positioned between pillows of a snorer and a partner of the snorer; when the active noise control system is not used, the rotary noise reduction box body is embedded in the bed head, when the snore is required to be reduced, the rotary noise reduction box body can be screwed out from the bed head, and the noise reduction box body is stably placed on the bed and is positioned between pillows of the snorer and the partner.
8. The snore active noise control system based on remote microphone technology as claimed in claim 2, wherein: the reference microphone, the secondary speaker and the active noise controller can be placed inside the noise reduction box (11, 12).
9. The snore active noise control system based on remote microphone technology as claimed in claim 2, wherein: the noise reduction box bodies (11, 12) are internally filled with sound absorption cotton sound absorption materials.
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| CN111862928A (en) * | 2020-08-20 | 2020-10-30 | 北京驭声科技有限公司 | Snore active noise control system based on remote microphone technology and implementation method |
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