Opens in a new tab

AES E-Library

← Back to search

Journal Article

Theory and Real-Time Implementation of Time-Varying Digital Audio Filters

Authors: Mourjopoulos, John N.; Kyriakis-Bitzaros, Efstathios D.; Goutis, Costas E.

Journal of the Audio Engineering Society · Volume 38 · Issue 7/8 · pp. 523–536 · July 1990

Abstract

Digital audio filters with time-varying parametric features are analyzed, and their realization via recursive difference equations with updated coefficients is examined. The errors and distortions occurring during parameter transitions are evaluated, and their audible components are estimated using a computational model of the auditory masking mechanism. A description of real-time implementation for the TMS 32020 microprocessor is also given, with tests for estimating the lower transition step limits so that a continuous parametric variation can be emulated.

Details

Publication
Journal of the Audio Engineering Society
Volume
38
Issue
7/8
Pages
523–536
Publication date
July 6, 1990
Affiliation
Wire Communications Laboratory and Microelectronics Laboratory, Department of Electrical Engineering, University of Patras, Patras, Greece (See document for exact affiliation information.)
Type
Journal Article