Cents to cps (hertz)

[Richard Moody]

To find the value of D5 60 cents higher......using a scientific calculator
such as the windows calculator.....

take the cents value and divide by 1200      in this case   60/1200
put that value in memory.
press 2  then press  x^y button  press memory recall button and multiply
that value  by the frequency in this case 587.

one cent is 2^(1/1200)
60 cents   is  2^(60/1200)

You can paste 2^(1/1200) directly into a spread sheet.    say A10

in B10  put in the value of cents or 60

In C10 put in the frequency  or 585

in D10  write or paste in this formula   2^(B10/1200)*C10   this calculates
what is entered in B10 and C10 and  displays the answer in D10.

in A9  write "Formula" ;  B9 "Cents" ;  C9  "Freq" ;  D9 "New Freq" .

Voila, the ricomatic simple cents to cps converter.



=+-=ric

ps you mentioned a concern about D5 being "stretched" because it was a
piano note.  First you have to set up to work with theoritical values,
after that you can ad on for compensation and special considerations.
Thus if you feel that D5 on a particular piano might be stretched  x  cents
from the theoritical D5 organ tone you can easily add that to the existing
spread sheet.




----- Original Message -----
From: Farrell <mfarrel2@tampabay.rr.com>
To: <pianotech@ptg.org>
Sent: Sunday, January 13, 2002 9:34 AM
Subject: String Tension Calculation


|but how do I add the 60 cents
| to the D5 hertz value? Thanks to any of the professors out there.
|
| Terry Farrell
|
|