Special Controller Types

Two special controller types are provided for use only with the Microsoft Synthesizer:

• 91 Ext Effect (Reverb) Depth
• 93 Chorus

Other synthesizers might have a different use for curves with these identification numbers.

You can use these two controller types to control over time the volume level of a buffer in an audiopath. Typically you would use a buffer with reverb or a chorus effect and adjust its volume relative to other buffers in the same mix group, to augment or diminish the effect.

The most convenient way to use one of these controllers is in conjunction with the Standard Stereo and Reverb audiopath. In this audiopath, output goes through two buffers: a Standard Stereo buffer using no effects, and a Standard Reverb buffer using a reverb effect. Using this audiopath, any sequence or pattern containing an Ext Effect (Reverb) Depth controller plays with the mixture of normal stereo sound and reverb sound changing over time. As the volume of the reverb buffer increases, the mix of the reverb increases.

For example, the following illustration shows a segment sequence with an Ext Effect (Reverb) Depth controller curve extending over six measures. Using the Standard Stereo and Reverb audiopath, the reverb increases during these measures.

For more information, see Reverb Send and Chorus Send Buses.