Fortified wine because he was inspired by a German wine flavoured with wormwood, an herb most famously used in distilling absinthe. However, wine flavoured with wormwood goes back to ancient Rome. The modern German word "Wermut" ("Wermuth" in the spelling of Carpano's time) means both "wormwood" and "vermouth". The herbs were originally used to mask raw flavours of cheaper wines, imparting a slightly medicinal "tonic" flavor. Vins doux naturels are lightly fortified wines typically made from white Muscat grapes or red Grenache grapes in the south of France. The production of vins doux naturels was perfected by Arnaud de Villeneuve at the
Additive synthesis for formant processing). Using these techniques, spectral components ("formants") consisting of purely harmonic partials can be appropriately transformed into desired form for sound modeling, and sequence of short samples ("diphones" or "phonemes") constituting desired phrase, can be smoothly connected by interpolating matched partials and formant peaks, respectively, in the inserted transition region between different samples. (See also Dynamic timbres) Additive synthesis is used in electronic musical instruments. It is the principal sound generation technique used by Eminent organs. In linguistics research, harmonic additive synthesis was used in 1950s to play back modified and synthetic speech spectrograms. Later, in early 1980s,