Research Project for Study on Low-frequency Noise Indicators and
「Research Project for Study on Low-frequency Noise Indicators and」於資料集「EPQSummary_NoiseAndVibration」由單位「行政院環境保護署」的陳先生所提供，聯繫電話是02-2311-7722#2386，最近更新時間為：2023-07-30 01:01:50。 欄位Project Title的內容是Research Project for Study on Low-frequency Noise Indicators and Measurement Techniques for Aircraft Noise Control Zone Delimitation ， 欄位Project Subject的內容是The corrective loop of sound perception (aka frequency-weighting) specified in current noise control regulations is indicated as A-weighting. Since the correction of A-weighting for low-frequency noises is larger, it is necessary to make a correction to the helicopter (low-frequency) noise in order to make it closer to the true perception of the helicopter (low-frequency) noise felt by the public. According to Article 4 of the Airport Vicinity Aircraft Noise Control Regulations (revised on June 8th, 2009), the aircraft noise control zones are classified into 3 levels. The difference value of the Day-Night Level (DNL) for jet aircrafts, propeller airplanes, and helicopters is determined to be 8 dB.
Given that whether the noise levels of the newly introduced AH-64 Apaches and UH-60 Black Hawks similar to those of our existing helicopter models is yet to be determined and the principles for noise control zone delimitation have been adopted for many years, it is necessary to review those principles and make necessary revision to them based on measurements. Through the implementation of this Research Project, research data relating to studies on helicopter noise control conducted in recent years at home and abroad have been collected and compiled and the development trends in the international arena identified. The results of related analysis and assessment might be used for making recommendations on the development of measurement techniques for helicopter noises, as well as assessment indicators and models used for low-frequency aircraft noises. In addition, the knowledge about weighting methods through actual measurement or correction based on noise assessment indicators for fixed-wing aircrafts might serve as a reference for delimitation of helicopter noise control zones and correction of noise contours.
Therefore, the Environment Protection Administration (EPA) proposed the 2016 Research Project for “Study on Low-frequency Noise Indicators and Measurement Techniques for Aircraft Noise Control Zone Delimitation” in hope that the results might serve as a reference for correction of regulations and legal process relating to helicopter noise control in the future. The achievements of the Research Project include:
1. Collected and analyzed the measurement methods and assessment indicators for low-frequency aircraft noises currently adopted by various countries.
2. Collected studies on the perception by the public and impact assessment of low-frequency noises.
3. Analyzed the impact characteristics of low-frequency aircraft noises and investigated and planned forward the assessment indicators and measurement techniques for low-frequency aircraft noises in our country.
4. Investigated and analyzed the measurement data of the low-frequency noises at existing heliports and acquired knowledge on the actual impact situation of them on adjacent communities. ， 欄位Project Year的內容是2016 ， 欄位Organizer的內容是Department of Air Quality Protection ＆amp; Noise Control ， 欄位Executive Unit的內容是環境永續工程顧問有限公司 ， 欄位Reporting download URL的內容是https://epq.epa.gov.tw/ProjectDoc/FileDownload?fid=134600&proj_id=1050248008&doc_kind=1 ， 欄位Publish Date的內容是20170301 。
Project Title
Research Project for Study on Low-frequency Noise Indicators and Measurement Techniques for Aircraft Noise Control Zone Delimitation
Project Subject
The corrective loop of sound perception (aka frequency-weighting) specified in current noise control regulations is indicated as A-weighting. Since the correction of A-weighting for low-frequency noises is larger, it is necessary to make a correction to the helicopter (low-frequency) noise in order to make it closer to the true perception of the helicopter (low-frequency) noise felt by the public. According to Article 4 of the Airport Vicinity Aircraft Noise Control Regulations (revised on June 8th, 2009), the aircraft noise control zones are classified into 3 levels. The difference value of the Day-Night Level (DNL) for jet aircrafts, propeller airplanes, and helicopters is determined to be 8 dB. Given that whether the noise levels of the newly introduced AH-64 Apaches and UH-60 Black Hawks similar to those of our existing helicopter models is yet to be determined and the principles for noise control zone delimitation have been adopted for many years, it is necessary to review those principles and make necessary revision to them based on measurements. Through the implementation of this Research Project, research data relating to studies on helicopter noise control conducted in recent years at home and abroad have been collected and compiled and the development trends in the international arena identified. The results of related analysis and assessment might be used for making recommendations on the development of measurement techniques for helicopter noises, as well as assessment indicators and models used for low-frequency aircraft noises. In addition, the knowledge about weighting methods through actual measurement or correction based on noise assessment indicators for fixed-wing aircrafts might serve as a reference for delimitation of helicopter noise control zones and correction of noise contours. Therefore, the Environment Protection Administration (EPA) proposed the 2016 Research Project for “Study on Low-frequency Noise Indicators and Measurement Techniques for Aircraft Noise Control Zone Delimitation” in hope that the results might serve as a reference for correction of regulations and legal process relating to helicopter noise control in the future. The achievements of the Research Project include: 1. Collected and analyzed the measurement methods and assessment indicators for low-frequency aircraft noises currently adopted by various countries. 2. Collected studies on the perception by the public and impact assessment of low-frequency noises. 3. Analyzed the impact characteristics of low-frequency aircraft noises and investigated and planned forward the assessment indicators and measurement techniques for low-frequency aircraft noises in our country. 4. Investigated and analyzed the measurement data of the low-frequency noises at existing heliports and acquired knowledge on the actual impact situation of them on adjacent communities.
Project Year
2016
Organizer
Department of Air Quality Protection ＆amp; Noise Control
Executive Unit
環境永續工程顧問有限公司
Reporting download URL
https://epq.epa.gov.tw/ProjectDoc/FileDownload?fid=134600&proj_id=1050248008&doc_kind=1
Publish Date
20170301
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