It sounds pretty horrible, actually...especially when it's initially out of tune. As the unisons come together, it still sounds terrible, but the sustain gets even louder!
Don Kansas City
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Apr 20, 2006
22 Replies
Could you record it in action and provide a link to a .WAV file? Might be interesting!
I only recently learned about this phenomenon for piano tuning. The way I understand it, the sound is more pleasant when the beat frequency of octaves is audible, rather than causing a subsonic variation in amplitude. Is this a reasonable explanation?
Paul E. Schoen
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Properly tuned pianos are never tuned to unison; A slight beat frequency is allowed to remain (perhaps 0.5 or 0.33 Hertz) to "fatten" the sounds and produce chorous effects.
Many thanks,
Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
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