Title :
A robust speaker dependent algorithm for isolated word recognition
Author :
Beritelli, Francesco ; Casale, Salvatore ; Serrano, Salvatore
Author_Institution :
Dept. of Inf. & Telecommun. Eng., Catania Univ., Italy
Abstract :
The paper deals with a simple speaker-dependent (SD) isolated word recognition (IWR) system based on template-based pattern matching. Different algorithms for storing and calculating the distortion between models and examples of words to be recognised are analysed. More specifically, the paper proposes a new algorithm that enhances performance with a slight increase in computational load and the amount of memory needed to store the models as compared with a traditional VQ-based approach. The results obtained in tests are given in terms of recognition rate, using the TIMIT-46 database with various type of background noise and different SNRs.
Keywords :
hidden Markov models; noise; pattern recognition; speech recognition; vector quantisation; HMM recogniser; SNR; TIMIT-46 database; VQ-based algorithm; background noise; distortion; dynamic time warping recogniser; hidden Markov model recogniser; pattern recognition techniques; recognition rate; robust speaker dependent algorithm; speaker-dependent isolated word recognition; vector quantisation; Algorithm design and analysis; Background noise; Databases; Hidden Markov models; Pattern matching; Pattern recognition; Robustness; Signal analysis; Speech recognition; Testing;
Conference_Titel :
Digital Signal Processing, 2002. DSP 2002. 2002 14th International Conference on
Print_ISBN :
0-7803-7503-3
DOI :
10.1109/ICDSP.2002.1028257
