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Journal Article

Analytic Derivation of Audio PWM Signals and Spectra

Authors: Floros, Andreas C.; Mourjopoulos, John N.

Journal of the Audio Engineering Society · Volume 46 · Issue 7/8 · pp. 621–633 · July 1998

Abstract

A method is presented which allows the direct mapping of any arbitrary audio PCM sample value into PWM pulse transition intervals, hence producing an analytic description of the resulting PWM data stream. In addition, the exact spectrum of the PWM signal can also be derived analytically from the PCM audio data. Comparative studies show that the proposed method has significant advantages over the existing methods used for the analysis of PWM conversion artifacts.

Details

Publication
Journal of the Audio Engineering Society
Volume
46
Issue
7/8
Pages
621–633
Publication date
July 6, 1998
Affiliation
Audio Group, Wire Communications Lab., Electrical and Computer Engineering Department, University of Patras, Patras, Greece (See document for exact affiliation information.)
Type
Journal Article