This paper describes a graphical user interface for audio equalization that combines the benefits of parametric and graphic equalizer control methods. The audio processing is implemented as a finite-impulse response (FIR) filter which allows control of both magnitude and phase response. Phase control is affected via a single group delay control that allows a trade-off to be made between linear phase and minimum phase filter coefficients. The resulting phase characteristic for a typical equalization setting is illustrated in comparison with a minimum phase : equalizer.

Author: McGrath, David S.
Affiliation: Lake DSP Pry. Ltd., Maroubra, New South Wales, Australia
AES Convention: 97 (November 1994) Paper Number: 3899
Publication Date: November 1, 1994
Subject: DSP in the Digital Domain

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