Title :
Rapid DTMF signal classification via parallel cascade identification
Author :
Korenberg, M.J. ; Doherty, P.W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont., Canada
fDate :
9/26/1996 12:00:00 AM
Abstract :
The parallel cascade identification of nonlinear systems is used for the rapid recognition of dual tone multi-frequency (DTMF) signals, i.e. the `dual tones´ used to encode the digits on a telephone keypad. The authors demonstrate that parallel cascades can correctly identify DTMF signals with half or less than half of the input data required by current methods
Keywords :
identification; nonlinear systems; pattern classification; signal processing; DTMF signal classification; digit encoding; dual tone multi-frequency signal recognition; nonlinear system; parallel cascade identification; telephone keypad;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19961260
