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Measurement of perforate insertion loss with bias flow

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Study assesses acoustic performance and insertion loss in perforated plates with bias flow, suggesting important implications for muffler design.

Bias flow can enhance insertion loss, with excessive flow introducing significant aeroacoustic noise.
Acoustic performance is evaluated with varying hole diameters and open area ratios in an expansion chamber.
Insertion loss is measured as the difference in sound power with and without the perforated plate.
Minimizing blower-induced noise ensures accurate insertion loss measurements from two loudspeaker sources.

Stiles et al. (2025) studied this question.

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View Full Paper

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Authors

Study assesses acoustic performance and insertion loss in perforated plates with bias flow, suggesting important implications for muffler design.

Bias flow can enhance insertion loss, with excessive flow introducing significant aeroacoustic noise.
Acoustic performance is evaluated with varying hole diameters and open area ratios in an expansion chamber.
Insertion loss is measured as the difference in sound power with and without the perforated plate.
Minimizing blower-induced noise ensures accurate insertion loss measurements from two loudspeaker sources.

Stiles et al. (2025) studied this question.

View Full Paper

Ask AI

Bookmark