Chongqing Hongxi Technology Co., Ltd. was established in August 2010. The main business of the company includes the design, research and development, production and sales of electronic components, high-precision electronic wire assemblies and miniature electro-acoustic devices. The products of the company mainly include extremely fine coaxial wire assemblies, extremely fine Teflon wire assemblies, other high-precision electronic wire assemblies, miniature speakers and soft material laminating, etc., which are mainly applied in the consumer electronics field dominated by notebook computers.Since 2015, this company has been recognized as a "High-tech Enterprise" all the time. It has successively won honors such as "Innovative Advanced Enterprise in 2017", "Open Economy Advanced Enterprise in 2018", "Key Industrial Enterprise in the Changshou District of Chongqing in 2020", "Industrial Special Contribution Enterprise in the Changshou District of Chongqing in 2021", and obtained the honorary title of "Specialized, Refined, Characteristic and Innovative" small and medium-sized enterprise in Chongqing in 2021.
GZ DP Anechoic T&E Co., Ltd. is composed 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 have rich theoretical and practical experience. It owns office buildings and factories of its own. 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 the 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 fully 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) Fully 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
1. The background noise Lgn(A) in the fully anechoic chamber is less than or equal to 18 dB(A).
2. Cut-off frequency: Fc ≤ 80 Hz.
IV. Measurement and Acceptance
There is no external simulated noise. Under normal working conditions, the indoor background noise is 8.86 dB(A).
When the external simulated noise is 65 dB(A), the indoor background noise is 11.8 dB(A).
V. Photos upon Completion
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