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A VLSI chip for isolated speech recognition system

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4 Author(s)
Sung-Nam Kim ; Dept. of Electron. Eng., Korea Univ., Seoul, South Korea ; In Chul Hwang ; Young-Woo Kim ; Soo-Won Kim

A VLSI processor is designed for the small-scale isolated speech recognition applications. It is a dedicated processor which detects endpoint, extracts LPC (linear predictive coefficient) cepstral coefficients from the speech signal, and computes the spectral distances using a dynamic time warping (DTW) technique. The designed chip can recognize 1000 isolated words per second with an average recognition accuracy of 90.3%. It is designed in a 0.8 μm CMOS technology, includes 66,760 gates, and runs with a 10 MHz clock

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Consumer Electronics, IEEE Transactions on  (Volume:42 ,  Issue: 3 )