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Sound quality evaluation of fan noise based on advanced hearing-related parameters

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Sound quality evaluation of fan noise is a challenge due to its spectral and temporal structures. Tonal components and modulated sounds are often the cause of customer complaints. Thus, besides frequency-weighted level like dB(A) or loudness, other parameters are required. Some years ago, a “Hearing Model” was developed with the intention of explaining and describing psychoacoustic effects. Applying the Hearing Model to sound quality tasks allows evaluating the spectral and temporal patterns of a sound (“Relative Approach” analysis) where absolute level or loudness is often without significance. The Relative Approach analysis emphasizes all relevant signal components concerning human auditory perception: tonal and transient signals.
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Keywords: 76; 79

Document Type: Research Article

Publication date: July 1, 2009

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