33_01_2
additional parameters: 


This instrument attempts to prolong harmony into timbre: a chord,
played by ring modulation instrument i1 is followed by a
gong-like tone, whose components are the fundamentals of the
chord.

The latter sound is perceived as one, yet its tone quality is
related to the chord's harmony. Here is the passage:

(score)


Instrument 1 produces the ring modulation chord, by combining a
sinus with a block wave.  The dominant frequencies are the
differences between ifqc and ifqm: -576 +1424 / -273 +1727 / -458
+3542 / -864 +3136 / -658 +3342  Hz.  These are the fundamentals
of the modulated block wave.

The envelope controlling the sinus wave is also controlling the
general envelope of the note and the spectral evolution. At first
the attack and duration are short (A), then the attack switches
to a cresc-decresc type with a medium duration (B). Finally, the
frequencies are repeated (273, 455, 576, 648, 864 Hz) as
components of a gong timbre with short attack and long duration
(C). 

Instrument 2 is equal to 02_01_3. An additive synthesis tone
through overlapping score calls. (Risset 1969: #550; Vercoe 1993:
morefiles/risset4.orc)

(flowchart)
(.orc and .sco files)

