FPGA Implementation of a Pipelined Gaussian Calculation for HMM-Based Large Vocabulary Speech Recognition
Joint Authors
Woods, Roger
Veitch, Richard
Aubert, Louis-Marie
Fischaber, Scott
Source
International Journal of Reconfigurable Computing
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-11-25
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Information Technology and Computer Science
Abstract EN
A scalable large vocabulary, speaker independent speech recognition system is being developed using Hidden Markov Models (HMMs) for acoustic modeling and a Weighted Finite State Transducer (WFST) to compile sentence, word, and phoneme models.
The system comprises a software backend search and an FPGA-based Gaussian calculation which are covered here.
In this paper, we present an efficient pipelined design implemented both as an embedded peripheral and as a scalable, parallel hardware accelerator.
Both architectures have been implemented on an Alpha Data XRC-5T1, reconfigurable computer housing a Virtex 5 SX95T FPGA.
The core has been tested and is capable of calculating a full set of Gaussian results from 3825 acoustic models in 9.03 ms which coupled with a backend search of 5000 words has provided an accuracy of over 80%.
Parallel implementations have been designed with up to 32 cores and have been successfully implemented with a clock frequency of 133 MHz.
American Psychological Association (APA)
Veitch, Richard& Aubert, Louis-Marie& Woods, Roger& Fischaber, Scott. 2010. FPGA Implementation of a Pipelined Gaussian Calculation for HMM-Based Large Vocabulary Speech Recognition. International Journal of Reconfigurable Computing،Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-491409
Modern Language Association (MLA)
Veitch, Richard…[et al.]. FPGA Implementation of a Pipelined Gaussian Calculation for HMM-Based Large Vocabulary Speech Recognition. International Journal of Reconfigurable Computing No. 2011 (2011), pp.1-10.
https://search.emarefa.net/detail/BIM-491409
American Medical Association (AMA)
Veitch, Richard& Aubert, Louis-Marie& Woods, Roger& Fischaber, Scott. FPGA Implementation of a Pipelined Gaussian Calculation for HMM-Based Large Vocabulary Speech Recognition. International Journal of Reconfigurable Computing. 2010. Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-491409
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-491409