A prefilter equalizer for pulse width modulation

This article demonstrates the feasibility of pulse-width-modulation (PWM) of discrete time signals in a digital audio amplifier without inducing the nonlinear distortion usually associated with straightforward PWM. This is achieved by prefiltering the signal prior to the PWM mapping in such a manner...

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Bibliographic Details
Published in:	Signal processing Vol. 92; no. 10; pp. 2444 - 2453
Main Author:	Aase, Sven Ole
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier B.V 01-10-2012 Elsevier
Subjects:	Applied sciences Detection, estimation, filtering, equalization, prediction Digital Digital audio amplifier Distortion Equalizers Exact sciences and technology Feasibility Information, signal and communications theory Nonlinearity Precompensation Prefilters Pulse duration modulation Pulse width modulation Signal and communications theory Signal, noise Telecommunications and information theory Time signals Volterra prefilter Pulse width modulation Precompensation Volterra prefilter Digital audio amplifier Filtering Acoustic signal Computer simulation Mapping Equalizer Volterra filter Digital signal Time domain method Audio signal Discrete time Signal processing Feasibility Discrete signal Pulse duration modulation Musical sound Non linear distortion Signal distortion Signal to noise ratio
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