Digital allpass filters having adjustable peak group delay, center frequency of delay, and delay bandwidth were used to determine the quantitative sensitivity to group delay distortion in the mid-frequency range (where the ear is most sensitive). Broadband impulsive test signals (clicks) were first phase distorted different amounts then presented in pairs diotically (same signal at each ear) over earphones.

Authors: Deer, J. A.; Bloom, P. J.; Preis, Douglas
Affiliations: Polytechnic of Central London, London, UK ; Ruhr University, Bochum, W-Germany(See document for exact affiliation information.)
AES Convention: 77 (March 1985) Paper Number: 2197
Publication Date: March 1, 1985
Subject: Psychoacoustics

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