Summary: 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 simple introductions to the specific acoustic design, manufacturing, construction, installation, on-site actual measurement and acceptance of anechoic chambers, soundproof chambers, silent chambers, reverberation chambers, semi-anechoic chambers, semi-soundproof chambers, fully anechoic chambers and fully soundproof chambers, please pay attention to browsing the project cases on the official website of our company, or scan the QR code of the WeChat public service account of our company to get free push notifications.For detailed information on anechoic chambers, soundproof chambers, silent chambers, reverberation chambers, semi-anechoic chambers, semi-soundproof chambers, fully anechoic chambers and fully soundproof chambers, please go to the download center on the official website belonging to our company to download for free.
Jiangsu Shangqi Group Co., Ltd. is a group company integrating multiple businesses such as motors, industrial vehicles, pharmaceuticals, hotels, food and import and export. Shangqi, by providing high-quality products and high-quality services, has been deeply promoting the corporate culture of "Humanistic Shangqi, Technological Shangqi, Honest Shangqi, Dynamic Shangqi".
They chose to cooperate with GZ DP Anechoic T&E Co., Ltd. because 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 its own office building and factory, and an acoustic laboratory meeting the CNAS standards has been built in the factory, which can monitor the acoustic technology indicators of its own products and provide external acoustic testing services. Through the hard work and continuous innovation and development of the Danpin team, the acoustic laboratories designed, produced and installed by it have products with accurate technical indicators, being environmentally friendly, durable in quality, good-looking in appearance and high in technological content.
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I. Purchased Content
Semi-anechoic chamber
II. Standards Followed
(1) GB/T 6882 "Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic and hemi-anechoic chambers";
(2) ISO 3745 "Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic and hemi-anechoic chambers"
III. Main Indicators and Project Contents
1. When the external ambient noise: Len(A) ≤ 65 dB(A), the background noise inside the semi-anechoic chamber: Lgn(A) ≤ 12 dB(A).
2. Cut-off frequency: Fc ≤ 80 Hz.
3. Dimensions of the semi-free sound field in the semi-anechoic chamber: 3.0 m (L) * 3.0 m (W) * 2.0 m (H).
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