Title :
Design of an optimum wavelet for cancellation of long echoes in telephony
Author :
Jin, Q. ; Wong, K.M. ; Luo, Z.Q.
Author_Institution :
Commun. Res. Lab., McMaster Univ., Hamilton, Ont., Canada
Abstract :
The application of wavelet packet (WP) in the echo cancellation is investigated and its performance is discussed. An efficient algorithm is developed to design a set of optimal wavelet filter banks for echo cancellation. Experimental results show that with the optimum wavelet filter banks, the output echo energy can be minimized and the computation load can be reduced
Keywords :
band-pass filters; echo suppression; filtering theory; telephony; wavelet transforms; algorithm; computation load reduction; experimental results; long echoes cancellation; optimal wavelet filter banks; output echo energy minimisation; performance; telephony; wavelet packet; Adaptive algorithm; Algorithm design and analysis; Echo cancellers; Filter bank; Frequency; Reflection; Sampling methods; Telephony; Wavelet packets; Wavelet transforms;
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.1994.467307
