Patavee Charnvivit

• Chulalongkorn University

This paper presents results concerning the relationship between word structure in terms of number of syllables and tonal realization in Thai. It examines whether the fact that a word is longer implies certain tonal reductions. Our hypothesis is that a mono- syllabic word will be uttered more carefully th an a polysyllabic word due to the potentiall...

This paper deals with the influence of tones on syllabic articulation in Thai. Motion capturing of 24 facial points in the face of a female speaker was performed using an Optotrak system as she uttered 24 sets of syllabic tokens covering the five different tones of Thai 12 times each. After rigid and non-rigid-movements had been separated, a PCA wa...

This paper presents results concerning the use of visual cues in the perception of Thai tones. The lower part of a female speaker's face was recorded on digital video as she uttered 24 sets of syllabic tokens covering the five different tones of Thai. A perception study was conducted in which audio sound track alone; as well as audio plus video wer...

The current paper presents preliminary experiments on the exploitation of visual cues in the perception of Thai tones. The lower half of a female speaker's face was recorded on digital video as she uttered a set of monosyllabic tokens covering the five different tones of Thai. The trajectories of 12 light points on the speaker's face were traced fr...

Thai intonation can be categorized as paralinguistic information of F0 contour of the utterance. There are three classes of intonation pattern in Thai, the Fall Class, the Rise Class, and the Convolution Class. This paper presents a method of intonation pattern recognition of Thai utterance. Two intonation feature contours, extracted from F0 contou...

This study concerns a preliminary experiment on modeling the duration of Thai syllables. It is based on a corpus of minimal pairs of sentences only differing as to their stress patterns. Following a factor analysis of syllabic durations in the corpus a simple duration model was developed. This model was used for re-synthesizing the utterances by ma...

The current study examines the interaction of syllable tones and vowel quantity in the production and perception of mono-syllabic words of Thai. A speech corpus containing groups of words differing only as to tone type and vowel quantity was designed. These were embedded in a short carrier sentence of five mid tone syllables, with the target word b...

This paper presents a monosyllabic Thai tone recognition system. The system is composed of three main processes, fundamental frequency (F0) extraction from input speech signal, analysis of F0 contour for feature extraction, and classification of each tone using the extracted features. In the F0 feature extraction, the polynomial regression function...

Determining how to represent the prosodic features of speech is the first question for the design of speech processing system, such as a text-to-speech and a speech recognition system. The purpose of this study is to determine whether prominent features of Thai syllables should be described as discrete or continuous value. If we select the discrete...

Software testing is an important activity in soft- ware development process. Testers have to generate test cases to test a system. At least, test cases consist of test input values and expected results. In func- tional testing or black-box testing, test designers can generate test cases from a requirements specification document which includes diag...