Bandwidth Extension of Speech Signals describes the theory and methods for quality enhancement of clean speech signals and distorted speech signals such as those that have undergone a band limitation, for instance, in a telephone network. Problems and the respective solutions are discussed for the different approaches. The different approaches are evaluated and a real-time implementation of the most promising approach is presented. The book includes topics related to speech coding, pattern- / speech recognition, speech enhancement, statistics and digital signal processing in general.
Table des matières
Speech Generation.- Analysis Techniques for Speech Signals.- Excitation Signal Extension.- Broadband Spectral Envelope Estimation.- Quality Evaluation.- Summary.
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