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Re: How much is needed for sound identification ?
Ballas (1993) measured identification of environmental sounds that were truncated to 700 ms. He found they were quite well identified, but he did not measure the time course - rather he measured reaction time, which varied quite a bit.
Ballas, J. A. "Common Factors in the Identification of an Assortment of Brief Everyday Sounds." J. Exp. Psych.: Hum. Percep. & Perf. 19 (1993): 250--26
In my environmental studies I have tried to edit sounds so that they were the briefest possible duration and still easily identifiable in pilot studies. I found quite a range of times needed - some complex events, like a bowling ball rolling down a lane, or a tree falling, have quite extended times courses (> 3 s) needed to provide all the information necessary.
There was a study involving time course of identification of environmental scenes that was presented at a conference. I am away from the office until next week, but I can provide the link then.
>From: Sylvain Clément [mailto:sylvain.clement@xxxxxxxxxxxxxx]
>Sent: Thursday, September 13, 2007 06:49 AM
>Subject: How much is needed for sound identification ?
>Dear List members,
>We are currently running several experiments on environmental sounds
>identification vs image identification.
>The literature in hearing seems to be quite poor whereas a lot of work
>have been done in the visual domain.
>Does anybody have know studies that tried to measure how long of a sound
>is needed to get the identification of the sound ("it's a bird") or get
>it's super-ordonate category ("it's an animal") ?
>Thanks in advance for any references.
>Neuropsychology & Auditory Cognition Team
>Sylvain CLEMENT (MCF)
>JE Neuropsychologie et Cognition Auditive (JE 2497)
>UFR de Psychologie
>BP 60149, Universite Ch. de Gaulle Lille 3
>Domaine universitaire "Pont de Bois"
>59 653 Villeneuve d'ascq Cedex
>tel : (03 20 41) 64 42