This paper presents a method to improve the classical transform based psychoacoustics model to better suit the physiological ear model, which is more accurate in approximating the masking threshold obtained from the psycho acoustical measurement. The linear additivity assumption for simultaneous masking is identified as main reason behind the lower threshold obtained from a classical transform based PAM. Different method to estimate tonality index is investigated and the inclusion of its measure in the nonlinear psychoacoustics model is proposed. Subjective listening test proves that our non-linear PAM performs better than its linear counterparts.

Authors: Kurniawati, Evelyn; Absar, Javed; George, Sapna; Lau, Chiew Tong; Premkumar, Benjamin
Affiliations: Nanyang Technological University, SCE-Parallel Processing Lab., Singapore ; ST Microelectronics Asia Pacific Pte.(See document for exact affiliation information.)
AES Conference: 22nd International Conference: Virtual, Synthetic, and Entertainment Audio (June 2002)
Paper Number: 000218
Publication Date: June 1, 2002
Subject: Virtual, Synthetic and Entertainment Audio

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