@inproceedings{ author = {J. Bitzer and K.U. Simmer and K.-D. Kammeyer}, year = {1999}, month = {Mar}, title = {Theoretical Noise Reduction Limits of the Generalized Sidelobe Canceller (GSC) for Speech Enhancement}, volume = {5}, pages = {2965-2968}, URL = {http://icassp99.asu.edu/}, address={Phoenix, Arizona}, abstract={In this paper we present an analysis of the generalized sidelobe canceller (GSC). It can be shown that the theoretical limits of the noise reduction performance depend only on the auto- and cross-spectral densities of the input signals. Furthermore, we compute the limits of the noise reduction performance for the theoretically determined diffuse noise field, which is an approximation for re-verberant rooms. Our results will show that the GSC cannot reduce noise further than 1dB. These results were verified by simulation of reverberant environments. Only in sound-proof rooms with a reverberation time less than 100ms the GSC performs well.}, booktitle={IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 99)} }