A switched-capacitor preprocessor for speech recognition

Yoshihiko Horio, Shogo Nakamura, Hiroyuki Takase

研究成果: Article査読

1 被引用数 (Scopus)

抄録

A switched-capacitor (SC) preprocessing system (preprocessor) which extracts and emphasizes the local peaks of the spectrum in real time is proposed for speech recognition systems. Main components of the system are a specially designed bandpass filter bank, a low-pass decimation filter bank, two-dimensional local peak extraction (LPE) filters, and a LPE filter selection circuit. Furthermore, a SC cascaded integrator-comb filter design technique is proposed to realize the decimation low-pass filter and the LPE filter. Finally, the system is tested by using two speech recognition systems.

本文言語English
ページ(範囲)79-94
ページ数16
ジャーナルAnalog Integrated Circuits and Signal Processing
2
2
DOI
出版ステータスPublished - 1992 4 1
外部発表はい

ASJC Scopus subject areas

  • Signal Processing
  • Hardware and Architecture
  • Surfaces, Coatings and Films

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