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<LI><A NAME="tex2html307"
  HREF="node9.html#SECTION00361000000000000000">The audio effects rack</A>
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<LI><A NAME="tex2html308"
  HREF="node9.html#SECTION00361100000000000000">Audio plugin Graphical User Interfaces (GUIs)</A>
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<H1><A NAME="SECTION00360000000000000000"></A> <A NAME="plugins"></A>
<BR>
Plugins
</H1>
Plugins are small add-ons which can process a track's data.

<P>
MIDI plugins operate on midi and drum tracks, and are found in
the <SPAN  CLASS="textbf">Midi</SPAN> menu.

<P>
Audio plugins can be applied to any track handling audio (that is,
inputs, outputs, wave tracks, synth tracks). The effects rack
section describes this. (See effects rack <A HREF="#effects_rack">2.6.1</A>).

<P>

<H2><A NAME="SECTION00361000000000000000"></A> <A NAME="effects_rack"></A>
<BR>
The audio effects rack
</H2>
All audio track types (Input, Output, Group, Wave, Synth, and Aux) have
an effects rack into which audio plugins can be inserted in a chain.
Currently each rack can accomodate up to four plugins.

<P>
MusE currently supports LADSPA plugins and DSSI synth and effects
plugins.

<P>
Plugins can be added by double-clicking on an entry in the effect rack
in the track info pane (which is shown at the left side of the arranger
when the according track is selected). Right-clicking the rack items
offers a self-explanatory popup menu.

<P>
All plugin controls can be automated. (See audio automation
<A HREF="node10.html#audio_automation">2.7.1</A>).

<P>
One must carefully consider how many audio inputs and outputs a plugin
has, and how may channels the particular audio track has (1 mono or
2 stereo), and how MusE uses the plugins in the rack.

<P>
Learn more about this in the appendix Understanding the Effects Rack:
<A HREF="node12.html#apx_effects_rack">3</A>

<P>

<H3><A NAME="SECTION00361100000000000000"></A> 
<A NAME="plugin_guis"></A>
<BR>
Audio plugin Graphical User Interfaces (GUIs)
</H3> Once a plugin is added, you need a way to 
manipulate its controls, which affect its behaviour and operate
on the sound.

<P>
MusE can show a generic GUI which contains all of the
plugin's controls arranged in a rather plain generic fashion.

<P>
Some plugins may also have a native GUI which looks much better (it
was specifically designed for the plugin).

<P>
Both GUI types are opened from the effects rack right-click popup menu.

<P>

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