Summary: Foshan Shunde District Hengshunjie Electronics Co., Ltd. was established in 2003. It is a comprehensive enterprise specialized in the production of DC cooling fans, electronic radiators, induction cooker coil pans, injection molded parts, hardware parts, and mold production and processing. It now has a modern production plant covering an area of more than 20,000 square meters and employs over 700 staff members. Its annual output value exceeded 200 million yuan in 2017.?

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 information such as specific acoustic design, manufacturing, construction, installation, and brief introductions to on-site measurement and acceptance, please pay attention to browsing the engineering cases on the official website of our enterprise, or scan the QR code of our WeChat public service account to get free push notifications. For detailed information, please go to the download center on the official website of our business to download for free.

Keywords: anechoic chamber, soundproof room, semi-anechoic chamber, fully anechoic chamber, acoustic laboratory, fully soundless room, soundless room, semi-soundless room;?

I. Purchasing 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 rooms";?

(2) ISO 3745 "Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic and hemi-anechoic rooms".?

III. Main Indicators and Project Content (Effective Space, Background Noise, etc.)?

1. The size and precision of the semi-anechoic chamber after construction meet the contract requirements agreed upon by both parties.?

2. When external normal operations are carried out and there is no interference from abnormal low-frequency noise sources in the surrounding environment, the indoor background noise of the semi-anechoic chamber is Lgn(A) ≤ 16 dB(A).?

IV. Acceptance Measurement Data?

Measured value: Lgn(A) ≤ 11.9 dB(A)?

V. Completion Photos?

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