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Journal Article

Efficient Convolution without Input-Output Delay

Authors: Gardner, William G.

Journal of the Audio Engineering Society · Volume 43 · Issue 3 · pp. 127–136 · March 1995

Abstract

A block FFT implementation of convolution is vastly more efficient than the direct-form FIR filter. Unfortunately block processin incurs significant input-output delay, which is undesirable for real-time applications. A hybrid convolution method is proposed, which combines direct-form and block FFT processing. The result is a zero-delay convolver that performs significantly better than direct-form methods.

Details

Publication
Journal of the Audio Engineering Society
Volume
43
Issue
3
Pages
127–136
Publication date
March 6, 1995
Affiliation
Perceptual Computing Section, MIT Media Lab, Cambridge, MA (See document for exact affiliation information.)
Type
Journal Article