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Convention Paper

A New Approach to Designing Decimation Filters for Oversampled A/D Converters

Authors: Angus, Jamie

AES Convention 130 · Paper 8414 · May 2011

Abstract

This paper presents a new approach to designing the necessary decimation filter in over-sampled noise shaping analogue to digital converters. These filters are still finite impulse response designs but they are designed using novel window functions that produce a stop-band attenuation that increases with frequency thus matching the out of band noise characteristics of the noise-shaping modulator. As a result high quality decimation filters can be realised using shorter filter lengths.

Details

Published in
AES Convention 130
AES Convention
130
Paper number
8414
Publication date
May 6, 2011
Session subject
Audio Signal Processing and Analysis
Affiliation
University of Salford, Salford, Greater Manchester, UK (See document for exact affiliation information.)
Type
Convention Paper