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JPH0792999A Expired / Lapsed JP ⏱️ 0.0 years remaining

Speech excitation signal coding method and apparatus

Assignee: NTT Inc
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Filing: 1993-09-22
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Granted: —
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Expires: 2013-09-22
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 適応符号ベクトルのピッチピーク位置に対応 した雑音符号ベクトルを生成する音声の励振信号符号化 方法および装置。 【構成】 適応符号帳4aから得られる適応符号ベクト ルの始点からピーク位置までの位相φを検出する位相探 索部11を具備し、雑音符号帳5aから得られる格納ベ クトルの位相を位相探索部11により検出される位相φ に基づいて位相適応化する位相適応部12を具備し、位 相適応部12から得られる位相適応化された雑音符号ベ クトルをピッチ周期化する周期化部6を具備し、周期化 部6および位相探索部11をピッチ周期信号Lにより切 り替え動作せしめる音声の励振信号符号化方法および装 置。 (57) [Abstract] [Purpose] A speech excitation signal coding method and apparatus for generating a noise code vector corresponding to a pitch peak position of an adaptive code vector. A phase search unit 11 for detecting the phase φ from the start point to the peak position of the adaptive code vector obtained from the adaptive codebook 4a is provided, and the phase of the stored vector obtained from the noise codebook 5a is determined by the phase search unit 11. Detected phase φ A phase adaptation unit 12 that adapts the phase based on the above, and a periodicization unit 6 that pitch-cycles the phase-adapted noise code vector obtained from the phase adaptation unit 12; An excitation signal coding method and apparatus for speech, which causes the section 11 to perform a switching operation by a pitch cycle signal L.

Inventors

  • 👤 Kazunori Mano
  • 👤 一則 間野
  • 👤 Takehiro Moriya
  • 👤 健弘 守谷

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-06 10:25
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