CN111445894A - Noise reduction method for shelter - Google Patents
Noise reduction method for shelter Download PDFInfo
- Publication number
- CN111445894A CN111445894A CN202010133679.7A CN202010133679A CN111445894A CN 111445894 A CN111445894 A CN 111445894A CN 202010133679 A CN202010133679 A CN 202010133679A CN 111445894 A CN111445894 A CN 111445894A
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- CN
- China
- Prior art keywords
- noise
- shelter
- requirement
- source
- correction coefficient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G10K11/17813—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 characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
-
- 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
- G10K11/1785—Methods, e.g. algorithms; Devices
-
- 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
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17861—Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
-
- 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
- G10K11/1787—General system configurations
- G10K11/17879—General system configurations using both a reference signal and an error signal
- G10K11/17883—General system configurations using both a reference signal and an error signal the reference signal being derived from a machine operating condition, e.g. engine RPM or vehicle speed
Abstract
The invention discloses a method for reducing the noise of a shelter, which is realized by the steps of defining the noise requirement of a concerned point and a noise source generating the noise, determining the noise index and the correction coefficient of each noise source and taking noise reduction measures aiming at the transmission path of the noise source. The invention has certain requirements on the noise of the shelter for the communication command shelter and the voice communication of the personnel, has lower environmental noise, is the guarantee of the improvement of the combat efficiency, and simultaneously improves the comfort and the quality of the shelter.
Description
Technical Field
The invention relates to a noise reduction method, in particular to a noise reduction method of a shelter.
Background
In modern war environments, the noise hazard to the human body is systemic, and can cause changes in the auditory system and production impact on the non-auditory system, and the relatively strong noise in long-term contact can cause pathological changes, the noise in the job site can affect language communication, affect work efficiency and even cause accidents, especially for communication command shelter, enough low environmental noise must be ensured, and the present US GYK MI L-STD-1474D proposes that the basic index of not more than 75dB, namely occasional telephone calls, radio calls or occasional calls within 1.5m distance, should be met, so the communication command shelter must effectively reduce the environmental noise.
The existing noise reduction method comprises the following steps: the noise of the equipment installed in the cabin is not effectively required in the initial design stage, and the vibration reduction and noise reduction design is only carried out on the transmission path of the noise, so that the noise reduction is not targeted, and the noise reduction effect is not ideal.
Disclosure of Invention
The invention aims to provide a method for reducing noise of a shelter, and solves the problems that the prior method has no pertinence in noise reduction and the noise reduction effect is not ideal.
The method for reducing the noise of the shelter comprises the following specific steps:
the first step is to clarify the noise requirement of the point of interest and the noise source generating the noise
Firstly, according to the requirements of users or relevant standards, the noise requirement of the concerned point in the square cabin is determined, and the concerned point refers to the riding position of passengers in the square cabin and the position of frequently operating equipment at the height of human ears.
Secondly, defining the main noise sources in the square cabin, including: power stations, air conditioners, ventilation fans and cabin equipment.
Second step, determining noise index and correction coefficient of each noise source
According to the principle of noise superposition, the method is expressed by using the formula (1):
l in formula (1) -total sound pressure level, i.e. noise index requirement;
Lithe sound pressure level of the noise sources, i.e. the specification requirement of each noise source.
The top-down design principle is adopted, so that the noise index requirement L meets the user requirement, and each noise source is assigned with a noise index Li. And simultaneously giving a correction coefficient to the different types of noise sources, wherein the correction coefficient is used for distinguishing the weight of the influence of the different types of noise sources on the integral noise of the shelter, and the correction coefficient distributed to the noise source with larger influence on the integral noise of the shelter is larger. The correction coefficient depends on the noise magnitude and influence of the noise sourceAnd (4) making a determination.
Thirdly, taking noise reduction measures aiming at the transmission path of the noise source
Even if each noise source can meet the requirement of the corresponding noise index, the noise of the concerned point can not meet the index requirement due to the relatively complex environment in the shelter, and corresponding measures are required to be taken on the noise source and the transmission path thereof for noise reduction treatment; adding a baffle plate on the transmission path of the noise so as to change the transmission path of the noise; sound-absorbing or sound-insulating materials are adhered to proper positions in the shelter, so that the noise of the concerned points is further reduced, and the noise of the concerned points meets the use requirement.
The invention has certain requirements on the noise of the shelter for ensuring the language communication of the command communication shelter and the personnel, has lower environmental noise, is the guarantee of the improvement of the combat efficiency, and simultaneously improves the comfort and the quality of the shelter.
Detailed Description
The method for reducing the noise of the shelter comprises the following specific steps:
the first step is to clarify the noise requirement of the point of interest and the noise source generating the noise
Firstly, according to the requirements of users or relevant standards, the noise requirement of the concerned point in the square cabin is determined, and the concerned point refers to the riding position of passengers in the square cabin and the position of frequently operating equipment at the height of human ears.
Secondly, defining the main noise sources in the square cabin, including: power stations, air conditioners, ventilation fans and cabin equipment.
Second step, determining noise index and correction coefficient of each noise source
According to the principle of noise superposition, the method is expressed by using the formula (1):
l in formula (1) -total sound pressure level, i.e. noise index requirement;
Lithe sound pressure level of the noise sources, i.e. the specification requirement of each noise source.
The top-down design principle is adopted, so that the noise index requirement L meets the user requirement, and each noise source is assigned with a noise index Li. And simultaneously giving a correction coefficient to the different types of noise sources, wherein the correction coefficient is used for distinguishing the weight of the influence of the different types of noise sources on the integral noise of the shelter, and the correction coefficient distributed to the noise source with larger influence on the integral noise of the shelter is larger. The correction coefficient is determined according to the noise magnitude and the influence time of the noise source.
Thirdly, taking noise reduction measures aiming at the transmission path of the noise source
Even if each noise source can meet the requirement of the corresponding noise index, the noise of the concerned point can not meet the index requirement due to the relatively complex environment in the shelter, and corresponding measures are required to be taken on the noise source and the transmission path thereof for noise reduction treatment; adding a baffle plate on the transmission path of the noise so as to change the transmission path of the noise; sound-absorbing or sound-insulating materials are adhered to proper positions in the shelter, so that the noise of the concerned points is further reduced, and the noise of the concerned points meets the use requirement.
Claims (2)
1. A method for reducing noise of a shelter is characterized by comprising the following specific steps:
the first step is to clarify the noise requirement of the point of interest and the noise source generating the noise
Firstly, according to the requirements of users or the requirements of relevant standards, the noise requirement of the concerned point in the shelter is determined, wherein the concerned point refers to the riding position of passengers in the shelter and the ear height of the position of frequently operated equipment;
secondly, defining the main noise sources in the square cabin, including: power stations, air conditioners, ventilation fans and equipment in the cabin;
second step, determining noise index and correction coefficient of each noise source
According to the principle of noise superposition, the method is expressed by using the formula (1):
the top-down design principle is adopted, so that the noise index requirement L meets the user requirement, and each noise source is assigned with a noise index Li(ii) a Giving a correction coefficient to different types of noise sources, wherein the correction coefficient is used for distinguishing the weight of the influence of different types of noise sources on the integral noise of the shelter, and the correction coefficient distributed to the noise source with larger influence on the integral noise of the shelter is larger; the correction coefficient is determined according to the noise magnitude and the influence time of the noise source;
thirdly, taking noise reduction measures aiming at the transmission path of the noise source
Even if each noise source can meet the requirement of the corresponding noise index, the noise of the concerned point can not meet the index requirement due to the relatively complex environment in the shelter, and corresponding measures are required to be taken on the noise source and the transmission path thereof for noise reduction treatment; adding a baffle plate on the transmission path of the noise so as to change the transmission path of the noise; sound-absorbing or sound-insulating materials are adhered to proper positions in the shelter, so that the noise of the concerned points is further reduced, and the noise of the concerned points meets the use requirement.
2. A method of reducing the noise of a shelter as claimed in claim 1, wherein L in formula (1) -total sound pressure level, i.e. noise level requirement, LiThe sound pressure level of the noise sources, i.e. the specification requirement of each noise source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010133679.7A CN111445894A (en) | 2020-03-02 | 2020-03-02 | Noise reduction method for shelter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010133679.7A CN111445894A (en) | 2020-03-02 | 2020-03-02 | Noise reduction method for shelter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111445894A true CN111445894A (en) | 2020-07-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010133679.7A Pending CN111445894A (en) | 2020-03-02 | 2020-03-02 | Noise reduction method for shelter |
Country Status (1)
| Country | Link |
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| CN (1) | CN111445894A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112951195A (en) * | 2021-02-24 | 2021-06-11 | 辽宁省视讯技术研究有限公司 | Vehicle-mounted active noise reduction dynamic regulation and control method and system |
Citations (5)
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|---|---|---|---|---|
| US20080159560A1 (en) * | 2006-12-30 | 2008-07-03 | Motorola, Inc. | Method and Noise Suppression Circuit Incorporating a Plurality of Noise Suppression Techniques |
| CN107086034A (en) * | 2016-11-03 | 2017-08-22 | 北京安声科技有限公司 | A kind of vehicle-mounted active noise reduction system and method |
| CN107240404A (en) * | 2017-06-08 | 2017-10-10 | 福建省电力勘测设计院 | Noise-reduction method for prefabricated cabin formula transformer station |
| CN206707858U (en) * | 2017-03-08 | 2017-12-05 | 威海广泰空港设备股份有限公司 | Quiet aircraft starts source of the gas unit |
| CN110509936A (en) * | 2019-09-03 | 2019-11-29 | 中车青岛四方机车车辆股份有限公司 | A kind of train lightweight denoising structure determines method and relevant apparatus |
-
2020
- 2020-03-02 CN CN202010133679.7A patent/CN111445894A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080159560A1 (en) * | 2006-12-30 | 2008-07-03 | Motorola, Inc. | Method and Noise Suppression Circuit Incorporating a Plurality of Noise Suppression Techniques |
| CN107086034A (en) * | 2016-11-03 | 2017-08-22 | 北京安声科技有限公司 | A kind of vehicle-mounted active noise reduction system and method |
| CN206707858U (en) * | 2017-03-08 | 2017-12-05 | 威海广泰空港设备股份有限公司 | Quiet aircraft starts source of the gas unit |
| CN107240404A (en) * | 2017-06-08 | 2017-10-10 | 福建省电力勘测设计院 | Noise-reduction method for prefabricated cabin formula transformer station |
| CN110509936A (en) * | 2019-09-03 | 2019-11-29 | 中车青岛四方机车车辆股份有限公司 | A kind of train lightweight denoising structure determines method and relevant apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 唐登运: "某雷达方舱噪声分析与控制", 《2008年电子机械与微波结构工艺学术会议论文集》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112951195A (en) * | 2021-02-24 | 2021-06-11 | 辽宁省视讯技术研究有限公司 | Vehicle-mounted active noise reduction dynamic regulation and control method and system |
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Application publication date: 20200724 |
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| RJ01 | Rejection of invention patent application after publication |