Stretching

Billbrpt@aol.com Billbrpt@aol.com
Wed, 3 Jun 1998 14:34:11 EDT


In a message dated 6/3/98 7:53:17 AM Central Daylight Time, rls@ncinter.net
writes:

<< I recall my instructor at the Chatauqua Institution stating that if you
 tune beatless octaves above the temperament octave you will automatically
 stretch these octaves. >>

Unfortunately this statement is not true. While I am sure that the instructor
did well in his time, he (she) perhaps did not have the information and
thorough understanding that is commonly knowledge today. Jim's answer to this
post says it all.

While you may perceive an octave to be beatless, the fact is that there can
really be no such thing.  There can only be certain coincident partials that
match.  It is an inevitable fact that if there are any two matching partials,
all the rest will  not match.  Under usual circumstances, the best compromise
will be for a single octave above the temperament area to have a slight beat,
on the order of 1/2 beat per second.  This will allow for double octaves,
octave and a 5th (12ths) and triple octaves to sound better although really
none might be perfectly matched.  The best compromise is actually often a
blend that is near but not quite perfect.

Bill Bremmer RPT
Madison, Wisconsin


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