Noise reduction
Fan noise - Noise prediction and reduction methods

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Noise reduction
Fan noise - Noise prediction and reduction methods

Author : Alain GUÉDEL

Review date: April 29, 2021 | Lire en français

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3. Noise reduction

3.1 Helical and helical centrifuges

Nota

In view of their very similar acoustic behavior, we've included the noise reduction measures for these two types of fan in the same section.

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3.1.1 Stingray noise

The reduction of line noise, which is of particular concern at high speeds, typically above 2,500 rpm, is achieved by means derived from the analysis of noise generation mechanisms described above (§

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