This paper presents some experiments with feature and score normalization for text-independent speaker verification of cellular data. The speaker verification system is based on cepstral features and Gaussian mixture models with 1024 components. The following methods, which have been proposed for feature and score normalization, are reviewed and evaluated on cellular data: cepstral mean subtrac...

Cellular frequency reuse is known to be an efficient method to allow many wireless telephone subscribers to share the same frequency band. However, frequency reuse laeds to mutual interference among co-channel cells. We review the technique for computing and modelling link performance in cellular networks.

This paper describes the design and implementation of an Internet Telephone Software System which allows real-time full duplex voice communication between two parties through the Internet. The system consists of two main components: Telephone Exchange and Telephone Software. The Telephone Exchange manages a list of active users who are connected to the system, establishes the telephone connecti...

door-to-door sales of cosmetics based on a system called Skin-Expert, a skin-image grading service that includes analysis and diagnosis. Skin-Expert analyzes a customer’s current skin quality from a picture of the skin. Several parameters are extracted by image processing, and the skin grading is done by rules generated by data mining from a baseline of grades given by human skin-care experts. ...