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Convention Paper

Second Generation Intelligent Class D Amplifier Controller Integrated Circuit Enables both Low Cost and High Performance Amplifier Designs

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

AES Convention 120 · Paper 6692 · May 2006

Abstract

This paper describes a digital input Class D amplifier controller integrated circuit which performs many of the functions needed to build a high performance Class D audio amplifier. Sophisticated digital Pulse Width Modulation, combined with digital feed-forward and feedback paths, yields both low cost and high performance amplifier designs. A powerful DSP is included 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 power supply variations, non-linearity and other distortion-inducing mechanisms.

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6692
Publication date
May 6, 2006
Session subject
Signal Processing; High Resolution Audio
Affiliation
D2Audio (See document for exact affiliation information.)
Type
Convention Paper