02_43_1
additional parameters: ioff, irise, idec


This remarkable tibetan harmonic chant like effect is created by
nine sinusoidal oscillators, whose frequencies are almost
identical: separated by a fraction of 1 Hz from each other. Thus
for each component, amplitude modulation leads to its enhancement
or cancelling out in turn. In his composition 'Mutations', Risset
gives the instrument two different envelopes: one with sharp rise
and one is a more gradual rise. 

02_43_1 has been modified to choose rise and decay times from the
score file, instead of using an oscillator as envelope generator.
A very brief rise sounds like the attack of a string instrument.
The score fragment is from 'Mutations'. (Lorrain 1980: phase6;
Vercoe 1993: morefiles/risset1.orc)

(flowchart)
(.orc and .sco files)

