Width

Abstract

An articulatorym odeli s presentedI.t definesa procedurefo r derivinga set of formantf requenciefsr om informationo n the stateo f the lip musclest,h e positiono f the jaw, the shapea nd positiono f the tongue body,a nd larynxh eight.T he acoustica nda uditoryc onsequencoefs v aryingt hesep arameterisn dividually are reportedT. he introductiono f the jaw as a separatep arameter--af eaturen ot usedi n previousa rticulatory modelsImakesit possiblteo explainw hy "opennesso"c cursa s a universapl honeticfe atureo f vowel production.A ccordingt o the explanationp roposed,t he degreeo f openingo f a vowel correspondtso a positiono f the jaw that is optimizedin the senseth at it cooperatewsi th the tonguei n producingth e desired area function.S uchc ooperationp reventse xcessivteo ngues haped eformationO. ur resultss uggestth at, in order to reflectt his principleo f articulatorys ynergism", tongueh eight," althoughp rimary with respect to its acousticc onsequencessh, ouldb e representedas a derivedf eaturec haracteristioc f the final vocaltract configuration.