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Convention Paper

High Performance PWM Power Audio Amplifier

Authors: Gaboriau, Johann; Fei, Xiaofan; Walburger, Eric

AES Convention 111 · Paper 5428 · November 2001

Abstract

A method used to remove the distortion in a digital PWM amplifier is introduced. This method is based on correction factors added to each integrator of a multi-bits delta-sigma modulator loop. This results in a tremendous improvement in the distortion performance of the system. A dynamic range of 100dB is obtained, with all harmonics supressed below 102dB. It is particularly useful for digital audio amplifiers.

Details

Published in
AES Convention 111
AES Convention
111
Paper number
5428
Publication date
November 6, 2001
Session subject
Signal Processing; Coding of Audio Signals
Affiliation
Cirrus Logic, Austin, TX (See document for exact affiliation information.)
Type
Convention Paper