Title :
Time-frequency analysis using the residual interference signal canceller filter bank
Author :
Ramalingam, C.S. ; Rao, Ashwin ; Kumaresan, R.
Author_Institution :
Dept. of Electr. Eng., Rhode Island Univ., Kingston, RI, USA
Abstract :
We describe a procedure for tracking the nonstationary components present in a real-valued signal. Each component is assumed to be a generalized sinusoid whose envelope and frequency vary slowly with time. This method is an extension of our previously proposed algorithm for tracking complex-valued components. When applied to voiced-speech signals, we demonstrate that if the number of trackers and their bandwidths are appropriately chosen, either the formants or the harmonics can be tracked
Keywords :
band-pass filters; filtering theory; harmonics; interference suppression; speech processing; time-frequency analysis; tracking filters; bandwidths; filter bank; formants; generalized sinusoid; harmonics; nonstationary components tracking; real-valued signal; residual interference signal canceller; time varying envelope; time varying frequency; time-frequency analysis; voiced-speech signals; Automatic frequency control; Bandwidth; Demodulation; Filter bank; Frequency estimation; Frequency modulation; Interference cancellation; Power harmonic filters; Time frequency analysis; Voltage-controlled oscillators;
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.1994.467304
