DocumentCode
1231297
Title
An Audio Response Unit Based on Partial Autocorrelation
Author
Itakura, Fumitada ; Saito, Shuzo ; Koike, Tsunehiko ; Sawabe, Hiroshi ; Nishikawa, Masaaki
Author_Institution
Nippon Telegraph and Telephone Public Corp., Tokyo, Japan
Volume
20
Issue
4
fYear
1972
fDate
8/1/1972 12:00:00 AM
Firstpage
792
Lastpage
797
Abstract
This paper describes an audio response unit used in data communication services. The speech segments necessary to respond are stored in a large capacity magnetic drum in terms of partial autocorrelation (PARCOR) coefficients and excitation source information. PARCOR coefficient is a new parameter to express accurately the spectrum envelope of speech signals. Multiple speech signals can be synthesized simultaneously by means of a timemultiplexed digital filter composed of a high-speed arithmetic unit. The unit is able to respond to more than 7000 speech segments of 1-s duration.
Keywords
Autocorrelation; Information rates; Phase change materials; Signal processing; Signal synthesis; Speech processing; Speech synthesis; Telephony; Vocabulary; Vocoders;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1972.1091236
Filename
1091236
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