Long finite-impulse response (FIR) filters are becoming more commonplace in audio processing. This paper presents an efficient method for creating FIR filter coefficients for a 30-band graphic equalizer with well-controlled magnitude and phase properties. By using this synthesis technique, along with an efficient FIR filter implementation, the entire 30-band equalizer can be implemented on a single DSP processor.

Author: McGrath, David S.
Affiliation: Lake DSP Pry. Ltd., Maroubra, NSW, Australia
AES Convention: 95 (October 1993) Paper Number: 3756
Publication Date: October 1, 1993
Subject: DSP Theory and Applications

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