NDLI: The Doppler effect — an evolutionary critical cue for the perception of the direction of moving sound sources

Content Provider	IEEE Xplore Digital Library
Author	Oechslin, M. Neukom, M. Bennett, G.
Copyright Year	2008
Description	Author affiliation: Dept. of Neuropsychology, Univ. of Zurich, Zurich (Oechslin, M.)
Abstract	Objects that are about to confront us are crucial for prospective actions. Even if we are not able to see what is approaching, the processing of auditory information enables us to identify the direction of moving sound sources. Various mechanisms allow us to accomplish this task most effectively. To date all of the mechanisms that have been widely discussed are based on sound-level differences or on timing aspects of incoming sounds. We considered sound sources which move radially towards or away from the listener emitting signals with constant amplitudes. If objects are too far away from us to produce any perceivable level differences, we have to rely on other acoustic cues. In an experiment using synthesized sounds in a virtual environment, we show that the so-called Doppler effect, which shifts the frequency of the direct sound and its reflections, is sufficient to identify correctly whether a moving sound source approaches or recedes.
Starting Page	676
Ending Page	679
File Size	206344
Page Count	4
File Format	PDF
ISBN	9781424417230
DOI	10.1109/ICALIP.2008.4590253
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Noise Observers Acoustics Reflection Distance measurement Doppler effect System-on-a-chip
Content Type	Text
Resource Type	Article

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