Progress in Speech and Audio Coding

DOI Web Site 40 References
  • MORIYA Takehiro
    NTT Communication Science Laboratories, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
  • KAMAMOTO Yutaka
    NTT Communication Science Laboratories, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
  • HARADA Noboru
    NTT Communication Science Laboratories, NIPPON TELEGRAPH AND TELEPHONE CORPORATION
  • SUGIURA Ryosuke
    NTT Communication Science Laboratories, NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Bibliographic Information

Other Title
  • 音声音響符号化技術の進展
  • −線形予測分析の貢献
  • −Role of Linear Prediction

Description

Progress in speech and audio coding is presented, focusing on the technology of linear predictive coding (LPC), which has played important roles in various processing schemes for speech and audio signals in general. From the first, LPC has been used for speech synthesis and telephone bandwidth speech coding, since it was found to be well suited to represent the characteristics of the vocal tract. In contrast, typical audio coding schemes have not used LPC. However, because of the needs of a low bitrate and the unification of speech and audio coding, LPC has come to be used for representing spectral information in audio coding as well. In line with this trend, two new standard coding schemes are introduced: audio lossless coding, MPEG-4 ALS, for digital broadcasting, and 3GPP EVS for recent cellular telephones.

Journal

  • IEICE ESS Fundamentals Review

    IEICE ESS Fundamentals Review 10 (4), 246-256, 2017

    The Institute of Electronics, Information and Communication Engineers

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