In the petition cases in recent years, many of them are caused by the refitting of automobiles and locomotives, which make loud noises. No matter it is day or night, they make unpleasant sounds. In the middle of the night, they seriously disturb the peace and disturb people's sleep. Therefore, there are many complaints or petitions. Telephone, accusing automobiles and motorcycles of excessive noise, it is really necessary to enforce the law against "sound and camera" technology, develop array microphone sound AI recognition technology, establish sound image and spectrum display for vehicle sound and camera technology law enforcement in use, and improve "multi-vehicle source motor vehicles Noise Camera System", a wave-type filtering mechanism that eliminates noise interference from multiple vehicles (including opposite lanes), so as to solve the problem of difficult evidence collection when noisy vehicles make noise. Multi-source sound photography technology law enforcement research and development technology is based on the sound wave propagation theory, using the signal collected by the microphone array (Microphone Array), can enhance or suppress the sound coming from a certain direction (noise) and then separate the multi-source sound. Using this method, the microphone array (Microphone Array) can effectively enhance (separate) specific sound signals in the noise environment, know the location (identification)) (sound directionality, directivity), and use the microphone array to exclude other Background volume solves the problem of complex sound sources, so it can be used in a very wide range of applications.
Due to the characteristics of a certain construction period and a fixed range of noise in construction projects, the degree of influence and scope vary greatly with different stages of construction progress. Although reported by the public and inspected by the local environmental protection bureau and improved within a time limit, as the construction period changes, the construction method and the use of machinery and tools are alternately changed, and often the construction method and machinery used in the original inspection are no longer available at the time of re-inspection, resulting in results that meet the standards after re-inspection There is a substantial gap with the feelings of the public, resulting in high petition cases. In order to effectively solve the noise nuisance problem of construction projects and achieve the goal of "zero growth in construction project noise complaints". In 111 years, a total of 10 construction engineering sound technology photography research tests were completed, using noise meters combined with array microphones and cameras to conduct research tests on five different types of composite sound sources. The test results can achieve sound source separation and various noise identification effects. Effectively identify various noise sources and locations. In order to further improve the precision and accuracy of construction engineering sound photography technology, in this (112) year plan to conduct 5 comparison tests on different noise sources with array sound photography equipment in the anechoic room, and conduct array microphone measurement system verification In addition, the Planning and Environmental Protection Bureau will hold a "construction engineering sound camera technology law enforcement" demonstration meeting to explain the application of array microphone sound camera technology to construction noise inspection research results. It is hoped that this case will promote "construction engineering technology" "Enforcement" technology to understand the source of noise and diligently check management measures. Through administrative management means, the construction site is required to improve the noise pollution problem, and the effectiveness of noise control in construction projects is expected to be improved.
At the present stage, there are several noise sources located in the same place in the metropolitan area of the petition case, and the environmental sound field formed by them is more complex, resulting in a synthetic volume effect (the so-called "composite sound source" or "cluster sound source") Affects the tranquility of the environment, and the complex volume of facilities has been regulated in Article 9 of the "Noise Control Standard" (102.08.05. Amendment), but there is no clear method or practice for the separation of complex sound sources in the land transportation system. When measuring the noise, the background volume should be corrected according to Article 3, Item 1, Item 7 of the "Land Transportation System Noise Control Standard", and the calculation and judgment of Article 3, Item 1, Item 8 should be carried out. Regulation. If the overall volume of the measurement site is suspected to include the rail system and other land transportation systems (express roads, expressways), other roads (such as river embankment access roads, general urban roads), aviation noise, etc., the measurement must be based on the "Land Transportation System Paragraph 7, Item 1, Article 3 of the Noise Control Standards amends the background volume. Subparagraph 7, Item 1, Article 3 of "Noise Control Standards for Land Transportation Systems" refers to the difference between a single transportation system and other non-land transportation systems (that is, background volume, such as urban roads and aviation...etc.). Subparagraph 8 of Item 1 of Article 3: refers to the difference between different systems in the land transportation system, excluding urban roads and aviation, etc., where the so-called "measurement site includes more than two road systems" in item 2 refers to the road system Only express roads and highways are included, and the volume of each sound source to be measured is summed into a composite volume; on the contrary, the volume of each sound source to be measured needs to be individually corrected for the background volume (that is, it is affected by the composite noise of other sound sources). Therefore, based on this case, it is established: if the overall volume of the measurement site includes the volume of more than two road traffic systems, and the volume difference of each traffic system is less than 10dB(A), the composite sound source identification analysis and separation method; and compile the land traffic The handling procedures and matters needing attention in cases of transportation system noise complaints are provided for the reference of relevant units and agencies (institutions).
Through the project, it will also collect international laws and regulations or management guidelines for the promotion of remote control drone noise, noise measurement methods, measurement environmental conditions and instrument specifications, and grasp the current status of promotion, and cooperate with 3 airports (including the army and air force operations) The county and city environmental protection bureau where the airport is located conducts aviation noise monitoring, reviews the location and number of aviation noise monitoring stations, and maintains and updates the functions of the aviation noise monitoring data interpretation tool for use by the county and city environmental protection bureau to reduce aviation noise complaints. In addition, we will review and revise laws and regulations related to the delineation of land transportation systems and noise control areas and control proposals, and update the "Guidelines for Executing Aviation Noise Monitoring Stations, Monitoring Center Checks, and Review of Aviation Noise Monitoring Reports in Areas Around Airports" and "Noise Reports in Land Transportation Systems Case Handling Procedures and Points for Attention” for reference by county and city environmental protection bureaus.
