Low-complexity 4.6-kbit/s speech coder based on extremely truncated impulse response

Hitoshi Ohmuro; Kazunori Mano

Low-complexity 4.6-kbit/s speech coder based on extremely truncated impulse response

Research output: Contribution to conference › Paper › peer-review

Abstract

This paper proposes a new low-complexity 4.6-kbit/s speech-coding method. This method uses an extremely truncated impulse response (ETIR) that allows the distance between the input speech and the synthesized speech to be calculated very quickly. Also, a new method of distance measurement to search for the optimum code vector eliminates the negative effect of the extreme truncation. Our coding experiments have shown that the proposed truncation method does not cause a significant decline in speech quality even if the number of FIR filter taps is lowered to three, and that our 4.6-kbit/s coder achieves a weighted signal-to-noise ratio that is only 0.3 dB lower than when using the conventional full-tap coder with conventional distance measurement.

Original language	English
Pages	63-64
Number of pages	2
Publication status	Published - 1997 Dec 1
Externally published	Yes
Event	Proceedings of the 1997 IEEE Workshop on Speech Coding for Telecommunications - Pocono Manor, PA, USA Duration: 1997 Sep 7 → 1997 Sep 10

Other

Other	Proceedings of the 1997 IEEE Workshop on Speech Coding for Telecommunications
City	Pocono Manor, PA, USA
Period	97/9/7 → 97/9/10

ASJC Scopus subject areas

Engineering(all)

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Cite this

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title = "Low-complexity 4.6-kbit/s speech coder based on extremely truncated impulse response",

abstract = "This paper proposes a new low-complexity 4.6-kbit/s speech-coding method. This method uses an extremely truncated impulse response (ETIR) that allows the distance between the input speech and the synthesized speech to be calculated very quickly. Also, a new method of distance measurement to search for the optimum code vector eliminates the negative effect of the extreme truncation. Our coding experiments have shown that the proposed truncation method does not cause a significant decline in speech quality even if the number of FIR filter taps is lowered to three, and that our 4.6-kbit/s coder achieves a weighted signal-to-noise ratio that is only 0.3 dB lower than when using the conventional full-tap coder with conventional distance measurement.",

author = "Hitoshi Ohmuro and Kazunori Mano",

year = "1997",

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language = "English",

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note = "Proceedings of the 1997 IEEE Workshop on Speech Coding for Telecommunications ; Conference date: 07-09-1997 Through 10-09-1997",

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AU - Ohmuro, Hitoshi

AU - Mano, Kazunori

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N2 - This paper proposes a new low-complexity 4.6-kbit/s speech-coding method. This method uses an extremely truncated impulse response (ETIR) that allows the distance between the input speech and the synthesized speech to be calculated very quickly. Also, a new method of distance measurement to search for the optimum code vector eliminates the negative effect of the extreme truncation. Our coding experiments have shown that the proposed truncation method does not cause a significant decline in speech quality even if the number of FIR filter taps is lowered to three, and that our 4.6-kbit/s coder achieves a weighted signal-to-noise ratio that is only 0.3 dB lower than when using the conventional full-tap coder with conventional distance measurement.

AB - This paper proposes a new low-complexity 4.6-kbit/s speech-coding method. This method uses an extremely truncated impulse response (ETIR) that allows the distance between the input speech and the synthesized speech to be calculated very quickly. Also, a new method of distance measurement to search for the optimum code vector eliminates the negative effect of the extreme truncation. Our coding experiments have shown that the proposed truncation method does not cause a significant decline in speech quality even if the number of FIR filter taps is lowered to three, and that our 4.6-kbit/s coder achieves a weighted signal-to-noise ratio that is only 0.3 dB lower than when using the conventional full-tap coder with conventional distance measurement.

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