Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno

Niels Martinus Philippe Neumann

John Gerard Beerends

The present document relates to a method of determining a perceptual impact of an amount of echo or reverberation in an degraded audio signal on a perceived quality thereof, wherein the degraded audio signal is received from an audio transmission system, wherein the degraded audio signal is obtained by conveying through said audio transmission system a reference audio signal such as to provide said degraded audio signal. The method includes performing a windowing operation on the degraded and reference audio signal by multiplying these with a window function to yield degraded and reference digital audio samples. Local estimates of an amount of echo or reverberation are determined on the basis of these samples.

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Tilburg, Netherlands

Niels Martinus Philippe Neumann