
Instrumental synthesis
Instrumental synthesis is a technique for composition and orchestration first developed in the 1970s. It is a founding principle of French spectral music, represented at that time mainly by the composers Tristan Murail, Hugues Dufourt, and Gérard Grisey. This type of compositional process could not have existed without the technological progress in musical acoustics made in the previous decades…
La synthèse instrumentale est une technique d’écriture et d’orchestration développée principalement dans les années 1970-1980. C’est le principe fondateur du courant de la musique spectrale, né en France et principalement représenté par les compositeurs Tristan Murail, Hugues Dufourt et Gérard Grisey à cette époque. Ce procédé compositionnel n’aurait pas pu exister sans les progrès technologiques en acoustique des dernières décennies.

Inharmonicity
Inharmonicity is a feature of timbre that is related to the frequency spectrum of a given sound. It is measured through an analysis of the partials (see https://www.actorproject.org/timbreducation/timbre-term-of-the-week-1), or, more precisely, of their frequencies and the intervals between them….

Spectral centroid
Spectral centroid is an acoustical descriptor of timbre. Its value is obtained through a statistical measurement on the frequency representation of the signal (the frequency spectrum - see Timbre Term of the Week "Signal vs Spectrum"). As its name says, centroid is a spectral descriptor and corresponds to a specific type of estimation of the spectral shape (or curve)…

Signal vs. Spectrum
In everyday life, sounds are captured by our auditory system and analyzed in our brains. But in order to better understand the physical phenomena that comes with sound production, we use analytical methods, both analog and computational, that are based on different representations of the sound vibration.

Hommage à Klaus Nomi
The Amazing Moments in Timbre series continue with a piece by Olga Neuwirth. Known as the "Enfant terrible" of the Austrian contemporary classical music scene, Neuwirth composes in a very theatrical and expressionist way, and describes her own art as a music of catastrophes ("Katastrophenmusik"). In her Hommage à Klaus Nomi(2009), for countertenor and chamber ensemble…