Basic algorithm of conjugate-structure algebraic CELP (CS-ACELP) speech coder

Akitoshi Kataoka, Shinji Hayashi, Takehiro Moriya, Sachiko Kurihara, Kazunori Mano

Research output: Contribution to journalArticlepeer-review


After lengthy discussion of standardization of an 8kbit/s speech coding algorithm that will be used for the Future Public Land Mobile Telecommunication Systems (FPLMTS), the ITU-T approved the speech coder CS-ACELP (Conjugate-Structure Algebraic CELP) in the November 1995 meeting. This paper overviews of CS-ACELP and discusses the algebraic codebook, perceptual weighting, and quantization methods for LSP parameters and gain. It also presents the results of subjective quality tests.

Original languageEnglish
Pages (from-to)325-329
Number of pages5
JournalNTT R and D
Issue number4
Publication statusPublished - 1996 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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