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Conference Paper

All Digital High Resolution Class D Amplifier Designs Using Power Supply Feed-Forward and Signal Feedback

Authors: Andersen, Jack; Chieng, Daniel; Harris, Steven; Klaas, Jeff; Kost, Michael; Taylor, Skip

AES Conference: 31st International Conference: New Directions in High Resolution Audio · Paper 24 · June 2007

Abstract

This paper describes digital input Class D amplifier design using a custom integrated circuit controller. Sophisticated digital Pulse Width Modulation, combined with digital Feed-Forward and Feedback paths, yields high resolution amplifiers. A powerful DSP is included in the controller to support amplifier control and allows comprehensive audio signal processing, including loudspeaker load compensation, EQ, time alignment, room acoustics compensation, bass enhancement, loudspeaker driver protection, virtual surround and other audio signal processing tasks. Power supply Feed-Forward and closed-loop Feedback technology correct for non-linearity and other distortion-inducing mechanisms.

Details

Published in
AES Conference: 31st International Conference: New Directions in High Resolution Audio
Paper number
24
Publication date
June 6, 2007
Session subject
High Resolution Audio
Affiliation
D2Audio Corporation (See document for exact affiliation information.)
Type
Conference Paper