inexpensive analog audio pitch (frequency?) meter or schematic/ plans for one?

January 6th 08, 01:03 PM posted to rec.audio.pro,sci.electronics.equipment,rec.audio.tech,rec.radio.amateur.homebrew,sci.electronics.design

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Posts: 19

inexpensive analog audio pitch (frequency?) meter or schematic / plans for one?

National Semi still makes a "frequency to voltage" converter chip, so does
Analog.

But here's a link to using a PLL -- from National Semi -- Application Note
210
http://www.national.com/an/AN/AN-210.pdf

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