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 follow-up materials such as a brief introduction to the specific acoustic design, manufacturing, construction, installation and on-site actual measurement acceptance of soundproof chambers, anechoic chambers, silent chambers, reverberation chambers, semi-soundproof chambers, semi-anechoic chambers, full soundproof chambers and full anechoic chambers, please pay attention to browsing the engineering cases on the official website of our enterprise or scan the QR code of the WeChat public service account of our corporation for free push. For detailed materials on soundproof chambers, anechoic chambers, silent chambers, reverberation chambers, semi-soundproof chambers, semi-anechoic chambers, full soundproof chambers and full anechoic chambers, please go to the download center on the official website of our business for free download.?

Jiangsu Shangqi Group Co., Ltd. is a group company integrating multiple businesses such as motors, industrial vehicles, pharmaceuticals, hotels, food and imports and exports. Shangqi has been deeply promoting its corporate culture of "Humanistic Shangqi, Technological Shangqi, Honest Shangqi, Dynamic Shangqi" by providing high-quality products and services.

They chose to cooperate with Guangzhou Danpin Artificial Environment Technology Co., Ltd. because Guangzhou Danpin Artificial Environment Technology Co., Ltd. consists of a team of acoustic experts and professional engineers who have been engaged in various acoustic technology research at home and abroad for many years and possess rich theoretical and practical experience. It has its own office building and factory, and an acoustic laboratory that complies with CNAS standards has been built in the factory, which can monitor the acoustic technical indicators of its own products 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 it feature precise technical indicators, environmental friendliness, durability, beautiful appearance and high technological content.

Keywords: soundproof chamber, anechoic chamber, silent chamber, reverberation chamber, semi-soundproof chamber, semi-anechoic chamber, full soundproof chamber, full anechoic chamber.

I. Purchasing Content Semi-anechoic chamber

I.?Basis of Standards

1. GB/T 6882 "Acoustics - Determination of Sound Power Level of Noise Sources - Precision Methods for Anechoic Chambers and Hemi-anechoic Chambers"

2. ISO 3745 "Acoustics - Determination of Sound Power Level of Noise Sources - Precision Method for Anechoic Chambers and Hemi-anechoic Chambers"

II.?Project Content and Main Indicators

1.?The installation project construction plan and the materials used for the semi-anechoic chamber shall all be designed and installed by Party B.

2.?The effective net internal dimensions, cut-off frequency and free field radius of the semi-anechoic chamber installation project shall be implemented in accordance with the contract agreed upon by both parties.

3.?When the external ambient noise: Len (A) ≤ 65 dB (A), there is no interference from abnormal low-frequency noise sources (such as ground pounding, piling, impact) around, and the air-conditioning and ventilation system is closed and only the lamps are turned on, the background noise Lgn (A) in the semi-anechoic chamber shall be ≤ 12 dB (A); Cut-off frequency: Fc ≤ 80 Hz.

IV. Measurement and Acceptance

V. Completion Photos

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