Pre-echo ("Eric W. Healy" )

Subject: Pre-echo
From:    "Eric W. Healy"  <ehealy(at)CSD.UWM.EDU>
Date:    Mon, 6 Jan 1997 16:35:13 -0600

>Dear Collegues, > >Can anybody help me with information on the audibility of pre-echoes? >I have surveyed the literature for any reports on this subject and I >have found nothing. Dear Dr. Laugesen, My advisor, Richard Warren, reports a simple demonstration of the high audibility of pre-echoes on pp. 56-57 of his book "Auditory Perception: A New Synthesis" (Pergamon Press, 1982, ISBN 0-08-025957-x). A recording of speech having "low normal reverberation" was manipulated so that the reverberant sound preceded the direct sound. While the speech having the usual (post-echo) reverb sounded normal, with barely detectable reverberant quality, the speech having reversed reverb (pre-echo) seemed "quite bizarre" and the pre-echo was "extremely noticeable." I hope this information can be of some use to you. Regards, Eric W. Healy Univ. of Wisconsin-Milwaukee

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