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.

Authors: Gaboriau, Johann; Fei, Xiaofan; Walburger, Eric
Affiliation: Cirrus Logic, Austin, TX
AES Convention: 111 (November 2001) Paper Number: 5428
Publication Date: November 1, 2001 Import into BibTeX
Session Subject: Signal Processing; Coding of Audio Signals
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=9867

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes18)   /pp2001/pp0112/111033.pdf

Start a discussion about this paper!