Artifact suppression and analysis of brain activities with electroencephalography signals.

Brain-computer interface is a communication system that connects the brain with computer (or other devices) but is not dependent on the normal output of the brain (i.e., peripheral nerve and muscle).

Analysis of tones in Cantonese speech based on the command-response model.

As one of the major Chinese dialects, Cantonese has a tone system consisting of nine lexical tones and three additional changed tones, which is considerably more complex than that of Mandarin. The most important acoustic feature characterizing these tones is the contour of the voice fundamental frequency (the F(0) contour). In this article we present an approach to modeling F(0) contours of Cantonese utterances, based on an extension of the command-response model.

Constrained tone transformation technique for separation and combination of Mandarin tone and intonation.

This paper addresses a classical but important problem: The coupling of lexical tones and sentence intonation in tonal languages, such as Chinese, focusing particularly on voice fundamental frequency (F1) contours of speech. It is important because it forms the basis of speech synthesis technology and prosody analysis. We provide a solution to the problem with a constrained tone transformation technique based on structural modeling of the F1 contours.