RE: [Shaku] RE: Pitch - psychoacoustics

From: Justin . (justinasia@yahoo.com)
Date: Wed Oct 12 2005 - 00:36:58 PDT


--- Dan Gutwein <dangutwein@comcast.net> wrote:

  The entire octave is only 220
> cycles wide, therefore each
> half step (100 cents) is a difference of 5.45 cycles
> (1200/220). A quarter
> tone would be 2.72 cycles and half of that would be
> 1.36 cycles.

Hi Dan
The semi-tones are all 100 cents apart, but aren't
they all different measurements of cyles apart, the
further up or down the scale you go?

  In order
> to "perceive" the difference between tuning systems
> or between close pitches
> belonging to different systems we must perceive
> fundamentals that differ by
> these small amounts. How is this done? By hearing
> "beat frequencies" - the
> amplitude swells produced by two acoustic waves
> canceling each other out.

Isn't that only when you play 2 tones simultaneously,
when they are very close in pitch? But we can still
perceive that tuning systems are different (different
temperaments) even if played in monophonic melody
(hope I'm using those terms right!). The percweption
you've mentioned surely wouldn't come in to solo
honkyoku?
Best wishes
Justin.

        
                
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