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<span class="refentrytitle">pvslock</span>
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<p>pvslock —
Frequency lock an input fsig
</p>
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<div class="refsect1" title="Description">
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<h2>Description</h2>
<p>
This opcode searches for spectral peaks and then locks the frequencies around those peaks. This is similar to
phase-locking in non-streaming PV processing. It can be used to improve timestretching and pitch-shifting quality in
PV processing.
</p>
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<div class="refsect1" title="Syntax">
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<h2>Syntax</h2>
<pre class="synopsis">fsig <span class="command"><strong>pvslock</strong></span> fsigin, klock</pre>
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<div class="refsect1" title="Performance">
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<h2>Performance</h2>
<p>
<span class="emphasis"><em>fsig</em></span> -- output pv stream
</p>
<p>
<span class="emphasis"><em>fsigin</em></span> -- input pv stream.
</p>
<p>
<span class="emphasis"><em>klock</em></span> -- frequency lock, 1 -> lock, 0 -> unlock (bypass).
</p>
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<th align="left">Warning</th>
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<p>
It is unsafe to use the same f-variable for both input and output of pvs opcodes. Using the same one might lead to undefined behavior on some opcodes. Use a different one on the left and right sides of the opcode.
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<h2>Examples</h2>
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<p class="title">
<b>Example 486. Example</b>
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<pre class="programlisting">
fsig1 pvstanal kspeed,1,1,1 ; pvoc analysis from table 1 (kspeed is timescale factor)
fsigout pvslock fsig1, 1 ; frequency lock
aout pvsynth fsigout ; pvoc synthesis
</pre>
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<p><br class="example-break" />
</p>
<p>Depending on the input, this will transform a pitched sound into an inharmonic,
bell-like sound.</p>
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<div class="refsect1" title="Credits">
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<h2>Credits</h2>
<p>
</p>
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<td>Author: Victor Lazzarini</td>
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<td>November 2004 </td>
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<p>
</p>
<p>New plugin in version 5</p>
<p>Nivember 2004.</p>
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