Tom Childers, N5GE wrote:
>
> On Wed, 14 May 2008 08:21:59 -0700, you wrote:
> Tuning for zero beat is the same method orchestras use to match the
> Concert
> Masters note at the beginning of a concert, so it is very accurate. It is
> also
> the way piano tuners tune pianos with a tuning fork.
>
True...very easy for anyone to do. You can also watch the S-meter (an
analog one is better) for minimum swings as the beat frequency is approached
(same way pilots synchronize multiple engines BTW).
If you have good hearing, you can also match two tones separated in time.
Below is a website where you can test your ability to do that. I think I
got something like 0.4 Hz on the test which was in the upper 90s percentile.
If you have musical ability, you do this all the time as you adjust your
instrument on-the-fly (e.g. positioning your fingers on a violin).
http://tonometric.com/adaptivepitch/ (there are a couple of other fun tests
too!)
73, Bill W4ZV
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