Variable bit rate Modulo-PCM using adaptive predictor

Kiyoshi Mizui, Masafumi Hagiwara, Masao Nakagawa

Research output: Contribution to journalArticle

Abstract

Recently, Modulo-PCM (MPCM) was proposed for waveform speech coding. This paper proposes a variable bit rate modulo-PCM (improved VBR-MPCM) whose performance is the same and whose complexity is about half compared with that of the conventional VBR-MPCM. A variable bit rate modulo-PCM using adaptive predictor (VBR-MPCM-AP) also is also proposed. It uses second-order pole and sixth-order zero adaptive predictors instead of the fixed ones used in the improved VBR-MPCM. From computer simulation results, it is confirmed that the VBR-MPCM-AP is about 0 to 8 dB in segmental SQNR (SQNRseg), which is better than the conventional VBR-MPCM, MPCM-AQF and ADPCMs. From the listening test results, it is confirmed that the VBR-MPCM-AP provides good reconstructed speech.

Original languageEnglish
Pages (from-to)89-97
Number of pages9
JournalSystems and Computers in Japan
Volume21
Issue number10
Publication statusPublished - 1990

Fingerprint

Pulse code modulation
Modulo
Predictors
Speech Coding
Speech coding
Waveform
Pole
Poles
Computer Simulation

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Hardware and Architecture
  • Information Systems
  • Theoretical Computer Science

Cite this

Variable bit rate Modulo-PCM using adaptive predictor. / Mizui, Kiyoshi; Hagiwara, Masafumi; Nakagawa, Masao.

In: Systems and Computers in Japan, Vol. 21, No. 10, 1990, p. 89-97.

Research output: Contribution to journalArticle

Mizui, Kiyoshi ; Hagiwara, Masafumi ; Nakagawa, Masao. / Variable bit rate Modulo-PCM using adaptive predictor. In: Systems and Computers in Japan. 1990 ; Vol. 21, No. 10. pp. 89-97.
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