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Convention Paper

IIR Filters for Audio Test and Measurement: Design, Implementation, and Optimization

Authors: Kite, Thomas

AES Convention 137 · Paper 9184 · October 2014

Abstract

Audio analyzers use filters for many reasons: to define the measurement bandwidth, to isolate tones for measurement, to remove fundamental signals, and so on. In modern instruments, the majority of this filtering is done digitally, following analog-to-digital conversion if the signal is not already digital. Digital filter design is a mature field that encompasses a broad range of techniques, from classical analog filter design to advanced iterative design methods. However, the filter design considerations and techniques unique to audio analyzers do not seem to occupy much space in the published literature. This paper aims to correct this with a discussion of filter design, implementation, and optimization for modern Intel x86 architectures.

Details

Published in
AES Convention 137
AES Convention
137
Paper number
9184
Publication date
October 6, 2014
Session subject
Signal Processing
Affiliation
Audio Precision, Inc., Beaverton, OR, USA (See document for exact affiliation information.)
Type
Convention Paper