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 | |
This PTG archive page provided courtesy of Moy Piano Service, LLC