John G. Neuhoff

 

The Doppler Illusion: The Influence of Dynamic Intensity Change on Perceived Pitch

The Doppler effect is the change in frequency that occurs when there is relative motion between a sound source and a listener. A familiar example may be the pitch change heard in a train's horn as it passes a crossing. Our work on the Doppler "Illusion" demonstrates a new auditory phenomenon associated with the Doppler effect and illustrates a new influence of dynamic intensity change on perceived pitch. Subjects experience an illusory RISE in pitch even though no rise in frequency occurs. The illusion occurs due to a failure of selective attention to frequency in the face of changing intensity. The perceptual dimensions of pitch and loudness interact.

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