02:03 pm, illusionsongs
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In this next version of the same Amadinda xylophone song I’ve been posting about, the way that we perceive the melody is drastically altered by the placement of each part in a different pitch range. According to Bregman “the lower part begins alone. Then it is joined by the higher part.  Because the two are an octave apart, their individual isochronous rhythms continue to be heard, and the emergent high and low irregular rhythms are lost.”  Because the distance between parts is sufficient for us to separate them out into two different streams, they remain distinct and rhythmically uniform, never merging to create a more complex combined rhythm.  You can hear the original example of how we can perceptually merge the parts into one stream to make a new rhythmic pattern here.

Copyright Albert S. Bregman.


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