Glottal Closure Instant detection from a glottal shape estimate

Gilles Degottex (1) , Axel Roebel (1) , Xavier Rodet (1)

1 Analyse et synthèse sonores [Paris]

The GCI detection is a common problem in voice analysis used for voice transformation and synthesis. The proposed innovative idea is to use a glottal shape estimate and a standard lips radiation model instead of the common pre-emphasis when computing the vocal-tract filter estimate. The time-derivative glottal source is then computed from the division in frequency of the speech spectrum by the vocal-tract filter. Indeed, prominent peaks are easy to locate in the time-derivative glottal source. A whole process recovering all GCIs in a speech segment is therefore proposed taking advantage of this. The GCI estimator is finally evaluated with synthetic signals and Electro-Glotto-Graphic signals.

Mots clés: NA; Informatique musicale

Domaines: Acoustique [physics.class-ph]; Traitement du signal et de l'image [eess.SP]; Neurosciences

Gilles Degottex, Axel Roebel, Xavier Rodet. Glottal Closure Instant detection from a glottal shape estimate. International Conference on Speech and Computer, SPECOM, Jun 2009, St-Petersbourg, Russia. pp.1-1. ⟨hal-01161227⟩