At 03:09 PM 1/7/2004 +0100, you wrote:
>Hi all,
>
>I am now designing a electronic metronome for myself, PIC-based of course.
>As an extra, since I'm using crystal precision anyway, I thought of
>including a 440 Hz (an A note) reference tone to tune flutes etc.
>But I can't find any standard (cheap) crystal that divides nicely in 440 Hz.
>Do you know a simple solution, that does not introduce audible jitter
>(that would effectively ruin the use as a tuner)?
>Are self-adjusting timer loops good enough?
>
>Well, thanks in advance again,

How about just using a capture-compare module and whatever crystal you like?

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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