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<refentry id="trshift">
<indexterm id="Indextrshift"><primary>trshift</primary></indexterm>
<refentryinfo><title>Spectral Processing:Streaming</title></refentryinfo>
<refmeta>
<refentrytitle>trshift</refentrytitle>
</refmeta>
<refnamediv>
<refname>trshift</refname>
<refpurpose>
Streaming partial track frequency scaling.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
The trshift opcode takes an input containg a TRACKS pv streaming signal (as generated,
for instance by partials) and shifts all frequencies by a k-rate frequency. It can also, optionally,
scale the gain of the signal by a k-rate amount (default 1). The result is frequency shifting of
the input tracks.
</para>
</refsect1>
<refsect1>
<title>Syntax</title>
<synopsis>fsig <command>trshift</command> fin, kpshift[, kgain]</synopsis>
</refsect1>
<refsect1>
<title>Performance</title>
<para>
<emphasis>fsig</emphasis> -- output pv stream in TRACKS format
</para>
<para>
<emphasis>fin</emphasis> -- input pv stream in TRACKS format
</para>
<para>
<emphasis>kshift</emphasis> -- frequency shift in Hz
</para>
<para>
<emphasis>kgain</emphasis> -- amplitude scaling (default 1)
</para>
<para>
</para>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
<example>
<title>Example</title>
<programlisting>
ain inch 1 ; input signal
fs1,fsi2 pvsifd ain,2048,512,1 ; ifd analysis
fst partials fs1,fsi2,.003,1,3,500 ; partial tracking
fscl trshift fst, 150 ; frequency shift (adds 150Hz to all tracks)
aout tradsyn fscl, 1, 1, 500, 1 ; resynthesis
out aout
</programlisting>
</example>
</para>
<para>
The example above shows partial tracking of an ifd-analysis signal and
linear additive resynthesis with frequency shifting.
</para>
</refsect1>
<refsect1>
<title>Credits</title>
<para>
<simplelist>
<member>Author: &namevictor;</member>
<member>February 2006 </member>
</simplelist>
</para>
<para>New in Csound5.01</para>
</refsect1>
</refentry>
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