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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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