This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi Avery, Here's a simple formula for you to calculate how many cents, c, to = offset your tuning for any given frequency of "A"... let c =3D number of cents offset let F =3D frequency reference (in your case, 415 Hz) Note: There are 1200 cents per octave (per doubling of frequency). F/440 =3D 2^(c/1200) (Note: c=3D0 when F=3D440.) log(F) - log(440) =3D (c/1200) log(2) c =3D 1200 (log(F)-log(440)) / log(2) c =3D 3986.3 log(F) - 10536.6 Plugging in 415 Hz for F, c =3D -101.3 cents offset Hope that helps. :-) Peace, Sarah ----- Original Message -----=20 From: Avery Todd=20 To: Pianotech=20 Sent: Monday, March 15, 2004 11:39 PM Subject: Re: Beats vs cycles vs cents Sarah,=20 Just wondering, but why then do "they" say that to tune to A-415,=20 one's ETD should be set to 101.3 cents offset? Have I understood=20 wrong?=20 Avery=20 =20 And yes, there are 100 cents between one half step and the next, =20 Peace, Sarah =20 =20 =20 ----- Original Message -----=20 From: Jean-Jacques Granas=20 To: pianotech@ptg.org=20 Sent: Monday, March 15, 2004 5:44 PM Subject: Beats vs cycles vs cents Hi Joseph, So if I understand this right, cents are units along a scale = leading from one half tone to the next, while beats are pegged to the = specific unison's frquency. Did I understand this right? Peace jj ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/53/28/1b/92/attachment.htm ---------------------- multipart/alternative attachment--
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