Title :
Detection of multi-tone signals based on energy operators
Author_Institution :
Telecom Microelectron. Center, Northern Telecom Electron. Ltd., Ottawa, Ont., Canada
Abstract :
A nonlinear approach based on the Teager-Kaiser energy operator for multi-tone detection in the presence of voice is presented. The approach is shown to provide accurate frequency estimation, robustness against network distortions, good rejection of tone-like speech, with a significantly lower computational load when compared to classical tone detection approaches
Keywords :
computational complexity; frequency estimation; interference suppression; signal detection; telephone interference; telephony; Teager-Kaiser energy operator; computational load; dual tone multifrequency; frequency estimation; multi-tone signals; network distortions; nonlinear approach; robustness; tone detection; tone-like speech; voice; Computer networks; Envelope detectors; Frequency estimation; Microelectronics; Nonlinear distortion; Robustness; Signal detection; Speech; Telecommunications; Telephony;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1994., Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-2127-8
DOI :
10.1109/TFSA.1994.467251
