EUROSPEECH '91
Second European Conference on Speech Communication and Technology

Genova, Italy
September 24-26, 1991

                 

On and Off Units Detect Information Bottle-Necks for Speech Recognition

Andrew C. Morris, Pierre Escudier, Jean-Luc Schwartz

Institut de la Communication Partee, INPG/ENSERG - Universite Stendhal, Grenoble, France

We show how the objective measure of Mutual Information (MI) can be used to confirm that information for identifying Place of Articulation (PoA) for plosives in vowel-plosive-vowel (VPV) context is concentrated at both ON (burst onset) and OFF (voicing termination) events in the acoustic spectrogram and is predominantly dynamic rather than static. We then run recognition tests to show that single-speaker plosive PoA in VPV context can be reliably identified from just one pair of short-term spectra centred at either ON or OFF position. Keywords: mutual information; phoneme recognition; data compression

Full Paper

Bibliographic reference.  Morris, Andrew C. / Escudier, Pierre / Schwartz, Jean-Luc (1991): "On and off units detect information bottle-necks for speech recognition", In EUROSPEECH-1991, 1441-1444.