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Title: Real-Time Continuous Speech Recognition System on SH-4A Microprocessor
Authors: Hiroaki Kokubo
Nobuo Hataoka
Akinobu Lee
Tatsuya Kawahara
Kiyohiro Shikano
Issue Date: Oct-2007
Publisher: IEEE
Start page: 35
End page: 38
Abstract: To expand CSR (continuous speech recognition) software to the mobile environmental use, we have developed embedded version of Julius (embedded Julius). Julius is open source CSR software, and has been used by many researchers and developers in Japan as a standard decoder on PCs. In this paper, we describe an implementation of the embedded Julius on a SH-4A microprocessor. SH-4A is a high-end 32-bit MPU (720 MIPS) with on-chip FPU. However, further computational reduction is necessary for the embedded Julius to operate realtime. Applying some optimizations, the embedded Julius achieves real-time processing on the SH-4A. The experimental results show 0.89 times RT(real-time), resulting 4.0 times faster than baseline CSR. We also evaluated the embedded Julius on large vocabulary (20,000 words). It shows almost real-time processing (1.25 times RT).
Description: MMSP2007: IEEE 9th International Workshop on Multimedia Signal Processing, October 1-3, 2007, Crete, Greece.
ISBN: 9781424412747
Rights: Copyright 2007 IEEE
Text Version: Publisher
Publisher DOI: 10.1109/MMSP.2007.4412812
Appears in Collections:情報科学研究科 / Graduate School of Information Science

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