Deutsch scale illusion is an auditory illusion in which two separate sequences of notes, played simultaneously into a listener left and right ears, are perceived as combining into one single recognizable melody rather than as two distinct lines. It is produced by playing simultaneous ascending and descending musical scales through separate stereo channels with the notes alternating between channels, and how listeners perceive the tones to be spatially arranged varies between individuals, partly according to handedness.
Facts
Classification
Type of Phenomenon Sources
1. Wikipedia: Deutsch's Scale Illusion
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Deutsch's scale illusion is an auditory illusion in which two series of unconnected notes appear to combine into a single recognisable melody, when played simultaneously into the left and right ears of a listener.
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