A time-frequency auditory model is presented. The model uses the wavelet packet analysis as a preprocessor. The auditory filters are modeled by the rounded exponential filters and the excitation is smoothed by a window function. By comparing time-frequency excitation patterns, it is shown that the change in the time-frequency excitation pattern introduced when a test tone at masked threshold is added to the masker is approximately equal to 7 dB for all types of maskers. The classic detection ratio, therefore, overrates the detection efficiency of the auditory system.

Author: Agerkvist, Finn T.
Affiliation: Technical University of Denmark, Lyngby, Denmark
AES Convention: 97 (November 1994) Paper Number: 3890
Publication Date: November 1, 1994 Import into BibTeX
Subject: Psychoacoustics and Hearing
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=6342

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