In order to improve audio coding performance, excess masking has been employed for the compression of complex audio signals. A new algorithm has been developed to classify and preprocess maskers. A psychoacoustic model is used to estimate simultaneous masking threshold. This masking threshold is used for quantizing audio signal coefficients in the frequency domain. Preliminary test results show improved coding efficiency.

Authors: Wang, Ye; Vilermo, Miikka
Affiliation: Nokia Research Center, Speech and Audio Systems Lab., Tampere, Finland
AES Conference: 17th International Conference: High-Quality Audio Coding (September 1999)
Paper Number: 17-021
Publication Date: September 1, 1999
Subject: High Quality Audio Coding

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