Klarinet Archive - Posting 001405.txt from 1998/10

From: "Mark Charette" <charette@-----.org>
Subj: Re: [kl] re:Altitude pt 2
Date: Sat, 31 Oct 1998 13:57:36 -0500

From: Doug Sears <dsears@-----.org>

>Very interesting calculations, but your speed of sound at sea level
>doesn't match the number you plugged into the formula for f1:
>
>>Speed of sound at sea level at 0 C @-----.3 M/s
>>f1 @-----.30 / 2(l + S/c) (sea level)

Whoops - I originally had the formula at a temperature other
than 0 C, and missed a factor when I changed the references to
0 C. That's why we have peer review :)

>Correcting this to:
>f1 @-----.3 / 2(l + S/c) (sea level)
>f2 @-----.27 / 2(l + S/c) (5000 ft)
>
>gives a ratio of .988, and 440 Hz at sea level becomes 434.6 Hz at 5000
>ft, a more believable change, IMO, and still pretty significant.

Thanks,
----
Mark Charette@-----.org
Webmaster, http://www.sneezy.org/clarinet
All-around good guy and devil-may-care flying fool.
"There can be no freedom without discipline." - Nadia Boulanger

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