<html><head><title>SqueekySynth 1.1 Instruction Manual</title></head>
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<h2>The Effects Processors</h2>

Two effects processors are integrated into SqueekySynth. The first processor is dedicated to reverb-based effects (e.g., hall reverb, room reverb, etc.), while the second is dedicated to modulation-based effects (e.g., chorus, phaser, etc.).<p>

Using these effects processors it is possible to produce a basic but complete mix-down without having to record any parts to "tape". The effects processors also provide compatibility with General MIDI files.<p>

There are two effects busses; one for each processor. Each MIDI channel has a varying degree of its signal sent to these busses, according to MIDI controllers. The reverb buss send is controlled using MIDI controller #91, while the modulation (chorus) buss send is controlled using MIDI controller #93, as per the General MIDI standard.<p>

The effects processors are configurable using the "Effects" page; display it by clicking the "Effects" tab, as illustrated below:<p>

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<img src="Images/Effects">
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<p>

The group of four sliders on the left control the reverb effects processor, while the similar group on the right control the modulation effects processor.<p>

The presets -- selectable via the pop-up menu at the bottom of each processor -- serve as a useful starting point and can often eliminate the need to adjust the parameters manually.<p>

Please note that upon selecting a preset, the pop-up menu will <i>not</i> change to reflect the selected preset, although the sliders will move to match the selected preset.<p>

As with all other settings in SqueekySynth, effect processor settings are memorized when you close the application, and restored when you next open it.<p>

A description of the effect processor parameters follows:<p>

<h3>Reverb Processor</h3>

<dl>

<dt><b>Room Size</b></dt>
<dd>
This controls the size of the room simulated by the reverb processor, by altering the reverb time. Higher settings give the impression of a larger space.
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</dd>

<dt><b>Damping</b></dt>
<dd>
This governs how quickly the high frequency reverberations die away. The name comes from the process of acoustically treating a room by installing drapes, acoustic foam and other damping methods to keep high frequency reverberation under control. A higher setting simulates greater damping, with less high frequency content. A low setting gives the impression of a very "live" room, with hard, untreated walls.
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</dd>

<dt><b>Width</b></dt>
<dd>
Controls the width of the stereo field created by the reverb. Higher settings give the impression of a larger space, and make the reverb more audible. Lower settings produce a "smaller" sound, which is less likely to overcrowd a busy mix.
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</dd>

<dt><b>Return Level</b></dt>
<dd>
Controls the volume level returning from the reverb processor, before being mixed with the output from the synthesizer and sent to the audio device. The default setting of 0dB is recommended, although if you are unable to achieve a "large" enough reverb in your mix, raising the return level may help. Lowering the return level may be necessary if you are playing a General MIDI file which uses too much reverb, or you wish to reduce the overal level of reverb in your mix. The lowest setting is "OFF", where the reverb processor is disabled.
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<b>NOTE: </b> In the current version, this feature is not yet implemented, and therefore is greyed-out.
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</dd>

</dl>

<h3>Modulation Processor</h3>

<dl>

<dt><b>Voices</b></dt>
<dd>
Modulation effects are generated by taking the original audio signal, modulating its pitch (periodically raising and lowering the pitch), and mixing it with the original signal to simulate the effect of two or more instruments playing in unison. To create a thicker sound, this process is repeated multiple times, giving the impression of many instruments playing. The "voices" parameter controls how many times this process is applied. Lower settings provide a very obvious modulation effect, while higher settings provide a denser sound, with less obvious modulation.
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</dd>

<dt><b>Frequency</b></dt>
<dd>
Controls the speed at which the modulation takes place. Higher settings produce a more apparent modulation, although with excessive vibrato. Lower settings produce a softer effect, but run the risk of sounding "out of tune".
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</dd>

<dt><b>Depth</b></dt>
<dd>
Controls the degree to which the pitch is altered. Higher settings produce a greater pitch change, at the expense of excessive vibrato and detuning. Lower settings produce a more subtle effect.
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</dd>

<dt><b>Return Level</b></dt>
<dd>
Controls the volume level returning from the modulation processor, before being mixed with the output from the synthesizer and sent to the audio device. The default setting of 0dB is recommended, although if the modulation effect isn't apparent enough, raising the return level may help. The more voices the modulation effect is using, the louder its output will be. Therefore, you may need to reduce the return level if using a large number of voices. The lowest setting is "OFF", where the modulation processor is disabled.
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</dd>

</dl>



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