The Skipping Technique : A Simple and Fast Algorithm to Find the Pitch in CELP Vocoder

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概要

• 論文の詳細を見る

• A fast pitch search algorithm using the skipping technique is proposed to reduce the computation time in CELP vocoder. Based on the characteristics of the correlation function of speech signal, the proposed algorithm skips over certain ranges in the full pitch search range in a simple way. Though the search range is reduced, high speech quality can be maintained since those lags having high correlation values are not skipped over and are used for search by closed-loop analysis. To improve the efficiency of the proposed method, we develop three variants of the skipping technique. The experimental results show that the proposed and the modified algorithm can reduce the computation time in the pitch search considerably, over 60% reduction compared with the traditional full search method.

• 社団法人電子情報通信学会の論文
• 1995-11-25

著者

• Lee Joohun

  Department Of Electronics Engineering Seoul National University

• Ann Souguil

  Department Of Electronics Engineering Seoul National University

• Bae MyungJin

  Department of Telecommunication Engineering, Soongsil University

• Bae Myungjin

  Department Of Telecommunication Engineering Soongsil University

• Lee JooHun

  Department of Biology, Yonsei University

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• The Skipping Technique : A Simple and Fast Algorithm to Find the Pitch in CELP Vocoder
• A Proportion-Sign Algorithm for Adaptive Filtering and Its Performance Analysis

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