[GreenKeys] [External] Re: Tone frequency history?

[Gerry Block]

Tubing fork sounds like a good theory BUT  any tuning fork used in the teletype era would be at 440 (concert A) so another theory must be found...
Gerry
Ad6mc

Sent from my iPhone

> On Oct 8, 2021, at 7:48 AM, Jones, Douglas W <douglas-w-jones at uiowa.edu> wrote:
> 
> From: Nick England [navy.radio at gmail.com] -- Friday, October 8, 2021 9:14 AM
> 
>> wonder why 425 Hz tuning forks would have been common? Musical A is 440 and A-flat is 415.3.
> 
> It's not that simple.  Historically, there has been a process called pitch inflation in the music industry.  To quote the final paragraph of
> -- https://jakubmarian.com/the-432-hz-vs-440-hz-conspiracy-theory/
> 
>> Virtually all commercially produced contemporary music is tuned to A = 440 Hz. Nevertheless, most symphony orchestras ignore the standard and tune to 441, 442 or 443 Hz instead, while orchestras specializing in older music may sometimes use a tuning close to the one for which the piece was originally written, which may range from 415 Hz to 470 Hz.
> 
> So, 425hz is one note that is historically appropriate as A.  In 1859, the French government set the standard at 435.  The 440 standard dates back to 1939.
> 
>          Doug Jones
>          jones at cs.uiowa.edu
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