A Voice Message Store and Forward System Based on the DSP Technique
Summary :
A large scale voice store forward system has been developed for NTT's ISDN, the Information Network System (INS). This system, which is based on digital signal processing (DSP), offers message delivery, message board and information proffer services, and it has user-friendly advanced features. Single chip DSP LSI are utilized for voice code conversion with pause-in-speech detection and DTMF reception, and a new backward-hangover processing technique has been introduced for pause-in-speech deletion. The field trial showed that the system performed as designed, that the user-friendly features truely helped the user to use it easily, and that the amount of storage used was reduced to 35% by adopting adaptive differential PCM coding and pause-in-speech deletion without voice quality degradation. The system was improved to meet network requirements, and commercial service was started in November 1986.
- Publication
- IEICE TRANSACTIONS on transactions Vol.E71-E No.9 pp.876-881
- Publication Date
- 1988/09/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Switching and Communication Processing
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Jun HIRAI, Takashi YOSHIDA, Hisazumi TSUCHIDA, Minoru OHYAMA, Makoto SASAOKA, "A Voice Message Store and Forward System Based on the DSP Technique" in IEICE TRANSACTIONS on transactions,
vol. E71-E, no. 9, pp. 876-881, September 1988, doi: .
Abstract: A large scale voice store forward system has been developed for NTT's ISDN, the Information Network System (INS). This system, which is based on digital signal processing (DSP), offers message delivery, message board and information proffer services, and it has user-friendly advanced features. Single chip DSP LSI are utilized for voice code conversion with pause-in-speech detection and DTMF reception, and a new backward-hangover processing technique has been introduced for pause-in-speech deletion. The field trial showed that the system performed as designed, that the user-friendly features truely helped the user to use it easily, and that the amount of storage used was reduced to 35% by adopting adaptive differential PCM coding and pause-in-speech deletion without voice quality degradation. The system was improved to meet network requirements, and commercial service was started in November 1986.
URL: https://global.ieice.org/en_transactions/transactions/10.1587/e71-e_9_876/_p
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@ARTICLE{e71-e_9_876,
author={Jun HIRAI, Takashi YOSHIDA, Hisazumi TSUCHIDA, Minoru OHYAMA, Makoto SASAOKA, },
journal={IEICE TRANSACTIONS on transactions},
title={A Voice Message Store and Forward System Based on the DSP Technique},
year={1988},
volume={E71-E},
number={9},
pages={876-881},
abstract={A large scale voice store forward system has been developed for NTT's ISDN, the Information Network System (INS). This system, which is based on digital signal processing (DSP), offers message delivery, message board and information proffer services, and it has user-friendly advanced features. Single chip DSP LSI are utilized for voice code conversion with pause-in-speech detection and DTMF reception, and a new backward-hangover processing technique has been introduced for pause-in-speech deletion. The field trial showed that the system performed as designed, that the user-friendly features truely helped the user to use it easily, and that the amount of storage used was reduced to 35% by adopting adaptive differential PCM coding and pause-in-speech deletion without voice quality degradation. The system was improved to meet network requirements, and commercial service was started in November 1986.},
keywords={},
doi={},
ISSN={},
month={September},}
Copy
TY - JOUR
TI - A Voice Message Store and Forward System Based on the DSP Technique
T2 - IEICE TRANSACTIONS on transactions
SP - 876
EP - 881
AU - Jun HIRAI
AU - Takashi YOSHIDA
AU - Hisazumi TSUCHIDA
AU - Minoru OHYAMA
AU - Makoto SASAOKA
PY - 1988
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E71-E
IS - 9
JA - IEICE TRANSACTIONS on transactions
Y1 - September 1988
AB - A large scale voice store forward system has been developed for NTT's ISDN, the Information Network System (INS). This system, which is based on digital signal processing (DSP), offers message delivery, message board and information proffer services, and it has user-friendly advanced features. Single chip DSP LSI are utilized for voice code conversion with pause-in-speech detection and DTMF reception, and a new backward-hangover processing technique has been introduced for pause-in-speech deletion. The field trial showed that the system performed as designed, that the user-friendly features truely helped the user to use it easily, and that the amount of storage used was reduced to 35% by adopting adaptive differential PCM coding and pause-in-speech deletion without voice quality degradation. The system was improved to meet network requirements, and commercial service was started in November 1986.
ER -
English
