ITRW on Non-Linear Speech Processing (NOLISP 03) May 20-23, 2003 Le Croisic, France

Truncation Error and Dynamics in Very Low Latency Phonetic Recognition

Giampiero Salvi

Dept. of Speech, Music and Hearing, KTH (Royal Institute of Technology), Stockholm, Sweden

The truncation error for a two-pass decoder is analyzed in a problem of phonetic speech recognition for very demanding latency constraints (look-ahead length < 100ms) and for applications where successive refinements of the hypotheses are not allowed. This is done empirically in the framework of hybrid MLP/HMM models. The ability of recurrent MLPs, as a posteriori probability estimators, to model time variations is also considered, and its interaction with the dynamic modeling in the decoding phase is shown in the simulations.

Full Paper

Bibliographic reference.  Salvi, Giampiero (2003): "Truncation error and dynamics in very low latency phonetic recognition", In NOLISP-2003, paper 014.