On Jul 6, 8:08 am, "N Cook" wrote:
For 5 octaves , for the "white" notes only , is the 15 th key from the left
middle C ? . Without any pitch-bend should it be 256 Hz or 256.?,262, 264 ?.
Or should the calibration be on "A" above middle C ie white key number 20 ?
and should that be exactly 440 Hz or some other frequency rounded to 440 Hz
?

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list onhttp://home.graffiti.net/diverse:graffiti.net/


Hi,
If I follow you right, then the C notes are the white key immediately
to the left of the pair of black keys. Different manufacturers start
the keyboards on different keys, so counting them is a little
difficult to determine which is which. If you can match the tone of
the key to the second string C on a six string guitar in standard
EBGDAE tuning, then that is middle C. 256 Hz is middle C, and 440 Hz
is the next A above middle C.
Hope this helps,
Louis