An LPC vocoder based on phase-equalized pitch waveform

Yusuke Hiwasaki, Kazunori Mano, Takao Kaneko

研究成果: Article

1 引用 (Scopus)

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This paper presents a speech coder operating at a very low bit-rate using a model called "phase-equalized pitch waveform". The basic idea of the coder is to employ pitchwise extraction of the linear predictive residual signal, a pitch waveform, in voiced speech. The residual signal is processed with a phase-equalization filter to increase the efficiency of both the pitch waveform quantization and interpolation. Listening tests showed that efficient and high-quality coding is achieved at 2.0 kbits/s. The quality of the coder is equal to that of the DoD FS1016 standard CELP at 4.8 or 2.4 kbits/s MELP.

元の言語English
ページ(範囲)277-290
ページ数14
ジャーナルSpeech Communication
40
発行部数3
DOI
出版物ステータスPublished - 2003 5 1

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ASJC Scopus subject areas

  • Software
  • Modelling and Simulation
  • Communication
  • Language and Linguistics
  • Linguistics and Language
  • Computer Vision and Pattern Recognition
  • Computer Science Applications

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