33_50_1
additional parameters: ifc, imod, ifqm, ifm


This is a 'classical' amplitude modulation design through which
one can control the precise percentage of amplitude modulation of
a signal.
 
The first section plays notes with an amplitude modulation
increasing from 0 to 1 in steps of 0.2 imod. The amplitude
modulation is applied to two sinus signals, but this is
extendable to the wide range of complex carriers and modulators. 

The amplitude is kept to the same output level in function of a
chosen imod factor. In other words: for whatever amount of
modulation, the amplitude will equal the specified
value iamp.

In the second section imod stays at 100% modulation. The effect
of a changing modulator frequency is tested by varying ifqm from
150 Hz to 1200 Hz. It should be noted that in the latter case,
the output also contains the reflected "negative" frequencies.

Suggestions:
Create an electronic "tremolo" with a small 'imod' and subaudio
ifqm. For imod=1, subaudio ifqm leads to a strongly pulsating
tone. As this concerns LFO modulation of amplitude, within the
ACCCI an electronic tremolo instrument belongs to main group 01
and not to main group 33.

(flowchart)
(.orc and .sco files)
