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<div>> Don't both with FFT for pitch detection. It has loads of latency, poor pitch resolution</div>
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<div>Although that can be alleviated by using a center frequency estimator on FFT peaks?<br/>
I have no mathematical clue how real the seeming gain in accuracy is, I just know this has been used in a tuning product.<br/>
Some are described here:</div>
<div>http://www.ericjacobsen.org/fe2/fe2.htm</div>
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<b>Von:</b> "Richie Burnett" <rburnett@richieburnett.co.uk><br/>
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<div name="quoted-content">Look up autocorrelation and AMDF. These are techniques used for detecting periodicity in complex waveforms.<br/>
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Don't both with FFT for pitch detection. It has loads of latency, poor pitch resolution, and is easily tricked by a missing fundamental.<br/>
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-Richie,<br/>
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Sent from my Xperia SP on O2<br/>
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---- oren levy wrote ----<br/>
<br/>
>Hi All,<br/>
><br/>
>I realize this isn’t directly synth related but it’s audio related electronics.<br/>
><br/>
>What are the preferred methods nowadays for designing accurate chromatic tuners for a range of instruments? I’d like to put together a chromatic tuner that I can hang on the wall that has a built in microphone to help tune instruments ranging from a bass (let’s say 30Hz) up to maybe 2k with better resolution than a snark tuner. The idea being that I can just play an open string on an acoustic guitar and look at the wall to see how far off I am. Or play an oscillator on my modular through my speakers and tune it.<br/>
><br/>
>I am aware of two ways of going about it at the moment: measuring the period of the wave and doing an FFT.<br/>
>I can take the mic signal and condition it and square it off through a comparator to get a clean pulse to measure the period on a uC but I worry that some instruments put out some funky waves.<br/>
><br/>
>Are there any newer or more novel ways to measure the frequency of funky waves as low as 30Hz?<br/>
><br/>
>Rock & Roll,<br/>
>Oren Levy<br/>
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