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Post by Zi on Oct 4, 2023 17:47:51 GMT
This is what I was referring to in the other thread.
Levitin says this:
"In piano works such as Sinding's "The Rustle of Spring" or Chopin's Fantasy-Impromptu in C-sharp Minor, op, 66, the notes go by so quickly that an illusory melody emerges. Play the tune slowly and it disappears. Due to stream segregation, the melody "pops out" when the notes are close enough together in time..."
He goes on to mention the Quintina in Sardinian a capella vocal music where "a fifth female voice emerges from the four male voices when the harmony and timbres are performed just right"... p106.
I just found it fascinating. I wondered how much that was planned for in music - that is - do composers go out of their way to create those effects?
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Post by keff on Oct 4, 2023 18:31:43 GMT
There have been some pieces that I have attempted where I was aware that I had to achieve a certain tempo before it sounds as it should. For example the Schubert Impromptu Op90/4 in Aflat major. In other pieces it is not necessary tempo but articulation which brings out the tune. However you do need tempo with Rustle of Spring (not that I have attempted this one) but why he thinks it is illusory I do not understand.
His observation of a fifth female voice, presumably meaning the production of the melody at a much higher pitch, is interesting and possibly explained by constructive interference of the higher harmonics.
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Post by Zi on Oct 5, 2023 8:42:45 GMT
I'd noticed the tempo thing before - in Van Eyck it sometimes sounds as if two recorders are playing when it's just one. But I didn't know about the fifth voice and I have to admit my understanding of the science of sound is meagre. I do understand the basics of how the human auditory system works though. Apparently the fifth voice thing is used by the barber quartets. And rather touchingly, it was explained in Christian religious music as the voice of Mary, joining in if the singers performed beautifully. As I never knew of its existence, I'd have assumed that the fifth voice was really there... and that's a problem really because it is and it isn't 'really' there... I've been wrestling with reality on an off for a bit now and Levitin has chucked me right back into the deep end... I'm not sure whether that's a good thing or not just now... Whatever, I find it really interesting!
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