In this presentation we exemplify the emergence of new possibilities in sound analysis and
synthesis with three novel developments that have been done in the Analysis/Synthesis team at
IRCAM. These examples address three main activities in our domain, and have reached a large
public making or simply listening to music.
The first example concerns synthesis using physical models. We have determined the behavior of
a class of models, in terms of stability, oscillation, periodicity, and finally chaos, leading to a
better control of these models in truly innovative musical applications.
The second example concerns additive synthesis essentially based on the analysis of natural
sounds. We have developed a new additive method based on spectral envelopes and inverse Fast
Fourier Transform, which we name FFT-1 and which provides a solution to the different
difficulties of the classical method. Commercial applications are announced for this year, for
professional users and soon for a larger public.
The last example is an original work on the recreation of a castrato voice by the means of sound
analysis, processing andsynthesis. It has been done for the soundtrack for a film and a CD about
Farinelli, the famous castrato of the eighteenth century. The CD and the film have reached
millions of people all around the world.