A-428 Tuning Question - HELP

[Thomas D. Seay, III]

>I just received a phone call asking me if I would be able to tune for a
>recital tomorrow afternoon at a church, to featuring a fortepiano tuned
>to A-428. From what I understand, it will be a "normal" equal
>temperment, but A-428 is not a pitch I am regularly accustomed to, nor
>am I entirely certain how to establish this pitch.
>
>Assuming I whip out the ol' trusty Sanderson II to set my "A", could
>someone tell me how many cents flat A-428 should be from A-440?  Any
>additional suggestions would also be of help.
>
>Thanks!
>
>Rob Goodale, RPT
>Morthern Arizona U. Tech

Rob,

Each cycle per second is equal to 4 cents. So to lower the pitch to A-428,
or12 cps below A-440, it would be:

12 cps X 4 cents = 48 cents.

Good luck.

Tom


Tom Seay
The University of Texas at Austin
t.seay@mail.utexas.edu