Three wavelet-based spectral smoothing techniques are presented in this paper as a pre-processing stage for head-related transfer function (HRTF) filter design. These wavelet-based methods include wavelet denoising, wavelet approximation, and redundant wavelet transform. These methods are used with time-domain parametric filter design methods to reduce the order of IIR filters which is useful for real-time implementation of immersive audio systems. Results of a subjective listening test are then presented in order to justify the perceptual validity of the investigated smoothing methods. Results show that wavelet based spectral smoothing methods are beneficial in reducing the filter order and increasing the perception of localization without introducing any noticeable effect on timbre.

Authors: Hacihabiboglu, Huseyin; Gunel, Banu; Murtagh, Fionn
Affiliation: Sonic Arts Research Centre (SARC), Queen’s University Belfast, Belfast, UK
AES Conference: 22nd International Conference: Virtual, Synthetic, and Entertainment Audio (June 2002)
Paper Number: 000246
Publication Date: June 1, 2002 Import into BibTeX
Subject: Virtual, Synthetic and Entertainment Audio
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=11136

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