Beaufays, F., & Weintraub, M. (1997, April). Model transformation for robust speaker recognition from telephone data. In 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing (Vol. 2, pp. 1063-1066). IEEE.
In the context of automatic speaker recognition, we propose a model transformation technique that renders speaker models more robust to acoustic mismatches and to data scarcity by appropriately increasing their variances. We use a stereo database containing speech recorded simultaneously under different acoustic conditions to derive a SYNTHETIC VARIANCE DISTRIBUTION. This distribution is then used to modify the variances of other speaker models from other telephone databases. The technique is illustrated with experiments conducted on a locally collected database and on the NIST’95 and ’96 subsets of the Switchboard Corpus.