Training algorithm of the codebooks

Takehiro Moriya, Satoshi Miki, Kazunori Mano, Jotarou Ikedo

Research output: Contribution to journalArticle

Abstract

An iterative training method is proposed for the design of random codebooks and channel code mapping tables for a CELP coder. The method is based on a structured excitation source, including a conjugate structure, pitch period repetition, and integrated mapping to channel code. All training procedures use a closed-loop distortion measure, which minimize perceptually weighted distortion between the input and the synthesized speech. The training improves SNR by around 1 dB and improves subjective quality. The channel code mapping and channel-matched distortion measure increase robustness against channel errors.

Original languageEnglish
Pages (from-to)397-404
Number of pages8
JournalNTT R and D
Volume43
Issue number4
Publication statusPublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Moriya, T., Miki, S., Mano, K., & Ikedo, J. (1994). Training algorithm of the codebooks. NTT R and D, 43(4), 397-404.

Training algorithm of the codebooks. / Moriya, Takehiro; Miki, Satoshi; Mano, Kazunori; Ikedo, Jotarou.

In: NTT R and D, Vol. 43, No. 4, 1994, p. 397-404.

Research output: Contribution to journalArticle

Moriya, T, Miki, S, Mano, K & Ikedo, J 1994, 'Training algorithm of the codebooks', NTT R and D, vol. 43, no. 4, pp. 397-404.
Moriya T, Miki S, Mano K, Ikedo J. Training algorithm of the codebooks. NTT R and D. 1994;43(4):397-404.
Moriya, Takehiro ; Miki, Satoshi ; Mano, Kazunori ; Ikedo, Jotarou. / Training algorithm of the codebooks. In: NTT R and D. 1994 ; Vol. 43, No. 4. pp. 397-404.
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