Title :
A new formulation of the multiple reference adaptive noise cancellation filter
Author :
Hill, Peter D. ; Mikhael, Wasfy B.
Author_Institution :
Westinghouse Sci. & Technol. Center, Pittsburgh, PA, USA
Abstract :
A novel formulation of the multiple reference adaptive noise cancellation (MRANC) filter is developed for enhancement of voice communications systems (e.g. vocoders, etc.) operating in multiple acoustic noise source environments. The reference signals are decoupled producing a new set of reference signals. Consequently, the MRANC has improved convergence speed and noise reduction performance. Quantitative test results from environments are presented and discussed
Keywords :
adaptive filters; filtering and prediction theory; interference suppression; voice communication; MRANC; adaptive noise cancellation filter; convergence speed; decoupled reference signals; multiple acoustic noise source environments; multiple reference; noise reduction performance; vocoders; voice communications systems; Acoustic noise; Acoustic testing; Acoustical engineering; Adaptive filters; Microphones; Noise cancellation; Noise reduction; Transfer functions; Vocoders; Working environment noise;
Conference_Titel :
Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on
Conference_Location :
Champaign, IL
DOI :
10.1109/MWSCAS.1989.101927
