Aerospace Life-Support Industries, Ltd. was established in 2003 and is located in Xiangyang City, Hubei Province. It is an enterprise mainly engaged in professional technical services. The company has over 10 subsidiaries that are distributed across regions like Hubei, Anhui, Shanghai and Sichuan. The business scope of the company covers personal protective life-saving equipment, emergency life-saving devices, ejection power devices, parachutes, special air conditioners, oxygen supply and ground testing equipment, sensitive elements, aviation sports products and so on. The company was rated as one of the top 100 high-tech enterprises in Hubei Province in 2022.
GZ DP Anechoic T&E Co., Ltd. consists of a team of acoustic experts and professional engineers who have been engaged in various acoustic technology researches at home and abroad for many years and possess rich theoretical and practical experience. It owns its own office buildings and factories. There is an acoustic laboratory built in the factory that meets the CNAS standards, and this laboratory can monitor the acoustic technical indicators of the products of this company and provide external acoustic testing services. Through the arduous efforts, continuous innovation and development of the Danpin team, the acoustic laboratories designed, produced and installed by the team have products with accurate technical indicators, being environmentally friendly, durable in quality, beautiful in appearance and high in technological content.
The semi-anechoic chamber is not only a special laboratory for acoustic testing, but also an important part of the testing system. In fact, it is also one of the acoustic testing equipment, and its acoustic performance indicators directly affect the testing accuracy. For specific acoustic design, manufacturing, construction, installation and brief introduction of on-site actual measurement and acceptance and other follow-up materials, please pay attention to browsing the project cases on the official website of the company, or scan the QR code of the WeChat public service account of the company to get free push notifications. For detailed materials, please go to the download center on the official website of the company to download them for free.
Keywords: soundproof chamber, anechoic chamber, quiet chamber, reverberation chamber, semi-soundproof chamber, semi-anechoic chamber, fully soundproof chamber, fully anechoic chamber, acoustic measuring instruments, vibration measuring instruments.
I. Procurement Content
(1) Semi-anechoic chamber
II. Basis of Standards
(1) GB/T 6882 "Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic rooms and fully anechoic rooms"
(2) ISO 3745 "Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic rooms and fully anechoic rooms"
III. Main Indicators and Project Content The background noise Lgn(A) in the semi-anechoic chamber is less than or equal to 25 dB(A). Cut-off frequency: Fc ≤ 80 Hz.
(Schematic diagram of the semi-anechoic chamber)
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