Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Development of Real Time Pitch Tracer for Training of Musical Tune

음정 교정을 위한 실시간 Pitch Tracer의 개발

  • Jung, Young-Chul (Dept. of Electrical, Electronic, Information & Communication Engineering Graduate School, Kongju National University) ;
  • Choi, Doo-Il (Dept. of Electrical, Electronic, Information & Communication Engineering Graduate School, Kongju National University) ;
  • Cho, Woo-Yeon (Dept. of Electrical, Electronic, Information & Communication Engineering Graduate School, Kongju National University)
  • 정영철 (공주대학교 전기전자정보공학과) ;
  • 최두일 (공주대학교 전기전자정보공학과) ;
  • 조우연 (공주대학교 전기전자정보공학과)
  • Published : 2002.11.30
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Abstract

This research treated development of real time pitch tracer for training of musical tune of speech signal and pre-processing and post-processing technics were proposed to get higher accuracy in extraction of pitch. Autocorrelation Function was used to get pitch frequency from 64Hz to 980Hz in real time. Half Rectifier method and Envelop extraction method as a pre-processing was used to get higher accuracy in pitch detection, and improved results were obtained on noised speech signal. Post-processing method using periodicity of Autocorrelation was proposed to get higher accuracy in the high frequency region.

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