01_42_1
additional parameters: ifc, iwidth, irate, ifm


This instrument permits us to add a frequency vibrato to a sound.
All notes have a duration of one second. In this special case the
vibrato rate is neither duration dependent, nor duration
independent. 

The vibrato width is limited to subaudio frequencies. This run
shows a quick experimentation with two sets of three notes each.
The variable iwidth takes the values 8, 16 and 24 in turn. In the
first set the rate of the vibrato is 5 Hz, in the second set it
is 2 Hz.

The use of an adder in the instrument allows to switch off the
vibrato by setting iwidth to 0.

(flowchart)
(.orc and .sco files)

