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Temporal Coherence in the Perception of Tone Sequences
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Part 6:
The Perception of Temporal Relations
Load example circuit for part 6
This circuit demonstrates that in the case of fission it becomes
difficult to hear the exact temporal relations between the tones
that belong to different streams.
The demo is automated so that you can concentrate on the
perceptual phenomena.
In the tone sequence ABAB... we are going to shift the position in time of the tones B.
In slow sequences this can easily be heard as a change of rhythm.
Now we increase the tone pitch interval.
In this slow sequence, the hobbling rhythm can also be heard at large intervals.
We now raise the tempo,
while keeping the relative shift of the tones B from the middle position the same.
It will become difficult to hear the mutual temporal position between the tones A and B.
The hobbling rhythm disappears.
Without changing the timing of the tone sequence, we reduce the tone interval again.
This makes it possible to hear the hobbling rhythm.
Finally, we move the B tones back to the middle, and you can hear the
smooth isochronous sequence again.
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