Fabrice Mogini
Choices
- For flute solo & live electronics
Harmony & mixed equal temperaments
In the flute score, each beginning and end of a bar of is written
in a new tonality, permitting some connections to certain notes of the other
equal temperaments played by the computer. Each temperament only appears when
it can be in tune with the current musical phrase. The next musical phrase,
in a new tonality, enables a new temperament to be used. Sometimes a temperament
is being used for a long period: in that case, only some specific notes that
are in tune
with the flute will be available to be soon replaced by a new set of notes
from the same temperament when the flute changes tonality. It is then important
that the flautist executes accurately the durations during the performance
so the computer can play the right tuning and frequency at the right time.
Pitch follower
Because musicians have sometimes difficulties to play with a tape I had to
use a system that enables the computer to follow the musician. The computer
follows the musician without any MIDI, just a standard microphone. The Pitch-Follower
object in Supercollider is used to print in real time a list of the flute
frequencies.
The computer is programmed with a list containing certain frequencies from
the score.
The next step for the computer is to compare these two lists. Whenever the
computer detects that the current flute frequency is one of the frequencies
from its score list, it triggers the corresponding sound
(already compose for this particular moment in the score). This sound, in
one of the equal temperaments, already contains the adequate notes to be in
tune with the flute at this particular instant.
The program used is supercollider (by James Mc Cartney, 1996) and runs on
appleMacIntosh.