Aubio offers a simple program to do exactly that.  See <a href="http://aubio.org/aubiopitch.html">http://aubio.org/aubiopitch.html</a>.<br><br>Jeremy<br><br><div class="gmail_quote">On Sun, May 15, 2011 at 10:59 PM, Ivan K <span dir="ltr">&lt;<a href="mailto:ivan_521521@yahoo.com">ivan_521521@yahoo.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Is there a simple app that can, given a sound file that contains only<br>
one pitch at a time, return the frequencies of the pitches?<br>
<br>
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