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Design Approaches for Psychoacoustical In-Band Noise Shaping Filters

Noise shaping is a state-of-the-art technique to preserve the perceived quality of audio signals when requan- tization happens. Noise shaping filters are special filters because of the non-linear characteristics in hearing. They have to be taken into account when designing these special digital audio filters. The design approaches presented in this contribution are able to include them into objectives or constraints. They minimize or limit the filter magnitude, the unweighted noise amplification and the group delay characteristics of the filter.

Author: Hahn, Jochen
Affiliation: TU Kaiserslautern, Kaiserslautern, Germany
AES Convention:126 (May 2009) Paper Number:7800 Import into BibTeX
Subject:Signal Processing

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