A quarter tone is 3%, a half tone is 6%, and a whole tone is 12%. So, the difference between 78.00 and 80 is just a hair under a quarter tone. A quarter tone would be 80.34; a half tone is 82.68..
Gary
____________________________
Gary Galo
Audio Engineer Emeritus
The Crane School of Music
SUNY at Potsdam, NY 13676
"Great art presupposes the alert mind of the educated listener."
Arnold Schoenberg
"A true artist doesn't want to be admired, he wants to be believed."
Igor Markevitch
-----Original Message-----
From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of James Roth
Sent: Monday, April 24, 2017 3:31 PM
To: [log in to unmask]
Subject: [ARSCLIST] How many half-tones from 78 rpm to 80 rpm
Hello everybody,
Can anyone tell me how many half-tones up from 78 rpm to 80 rpm?
Thanks.
Ben Roth
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