Dual-pulse CS-CELP: a toll-quality low-complexity speech coder at 7.8 kbit/s

Hitoshi Ohmuro; Jotaro Ikedo; Takehiro Moriya; Akitoshi Kataoka; Shinji Hayashi; Kazunori Mano

Dual-pulse CS-CELP: a toll-quality low-complexity speech coder at 7.8 kbit/s

Hitoshi Ohmuro, Jotaro Ikedo, Takehiro Moriya, Akitoshi Kataoka, Shinji Hayashi, Kazunori Mano

Research output: Contribution to journal › Conference article › peer-review

Abstract

Low-cost highly-efficient speech coding is important for personal multimedia communications. In this paper we propose a new low-complexity speech coding method called 'Dual-Pulse CS-CELP (DP-CS-CELP)' at 7.8 kbit/s. This method is based on ITU-T G.729. To reduce the complexity, we applied a new excitation model to the random code vectors and simplified the LPC coding, adaptive codebook search, perceptual weighting, and the other structures. The number of operations for this encoder is 3.80 MOPS, which achieves real-time speech coding and decoding on personal computers. Although the efficiency of this coder is a little lower than that of G.729, the MOS listening test showed that the subjective quality was equivalent to or a little better than that of G.726 (32-kbit/s ADPCM).

Original language	English
Pages (from-to)	558-561
Number of pages	4
Journal	ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume	1
Publication status	Published - 1996 Jan 1
Externally published	Yes
Event	Proceedings of the 1996 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP. Part 1 (of 6) - Atlanta, GA, USA Duration: 1996 May 7 → 1996 May 10

ASJC Scopus subject areas

Software
Signal Processing
Electrical and Electronic Engineering

Cite this

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title = "Dual-pulse CS-CELP: a toll-quality low-complexity speech coder at 7.8 kbit/s",

abstract = "Low-cost highly-efficient speech coding is important for personal multimedia communications. In this paper we propose a new low-complexity speech coding method called 'Dual-Pulse CS-CELP (DP-CS-CELP)' at 7.8 kbit/s. This method is based on ITU-T G.729. To reduce the complexity, we applied a new excitation model to the random code vectors and simplified the LPC coding, adaptive codebook search, perceptual weighting, and the other structures. The number of operations for this encoder is 3.80 MOPS, which achieves real-time speech coding and decoding on personal computers. Although the efficiency of this coder is a little lower than that of G.729, the MOS listening test showed that the subjective quality was equivalent to or a little better than that of G.726 (32-kbit/s ADPCM).",

author = "Hitoshi Ohmuro and Jotaro Ikedo and Takehiro Moriya and Akitoshi Kataoka and Shinji Hayashi and Kazunori Mano",

year = "1996",

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T2 - Proceedings of the 1996 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP. Part 1 (of 6)

AU - Ohmuro, Hitoshi

AU - Ikedo, Jotaro

AU - Moriya, Takehiro

AU - Kataoka, Akitoshi

AU - Hayashi, Shinji

AU - Mano, Kazunori

PY - 1996/1/1

Y1 - 1996/1/1

N2 - Low-cost highly-efficient speech coding is important for personal multimedia communications. In this paper we propose a new low-complexity speech coding method called 'Dual-Pulse CS-CELP (DP-CS-CELP)' at 7.8 kbit/s. This method is based on ITU-T G.729. To reduce the complexity, we applied a new excitation model to the random code vectors and simplified the LPC coding, adaptive codebook search, perceptual weighting, and the other structures. The number of operations for this encoder is 3.80 MOPS, which achieves real-time speech coding and decoding on personal computers. Although the efficiency of this coder is a little lower than that of G.729, the MOS listening test showed that the subjective quality was equivalent to or a little better than that of G.726 (32-kbit/s ADPCM).

AB - Low-cost highly-efficient speech coding is important for personal multimedia communications. In this paper we propose a new low-complexity speech coding method called 'Dual-Pulse CS-CELP (DP-CS-CELP)' at 7.8 kbit/s. This method is based on ITU-T G.729. To reduce the complexity, we applied a new excitation model to the random code vectors and simplified the LPC coding, adaptive codebook search, perceptual weighting, and the other structures. The number of operations for this encoder is 3.80 MOPS, which achieves real-time speech coding and decoding on personal computers. Although the efficiency of this coder is a little lower than that of G.729, the MOS listening test showed that the subjective quality was equivalent to or a little better than that of G.726 (32-kbit/s ADPCM).

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JF - Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing

Y2 - 7 May 1996 through 10 May 1996

ER -

Dual-pulse CS-CELP: a toll-quality low-complexity speech coder at 7.8 kbit/s

Abstract

ASJC Scopus subject areas

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