a detailed model of wind power station, including double fed induction generator, dfig is presented in this paper. two control mechanisms are included in the model. the inner control system uses stator flux oriented control for the rotor side converter and grid voltage vector control for the grid side converter. the outer control system is used for wind turbine pitch angle. pscad/emtdc is used ...

This paper investigated the effect of Min on dialectal variations of Mandarin tonal realization. Experiment 1 recruited 12 females, 7 from China and 5 from Taiwan. Results showed that tones in Taiwan had lower pitch register than those in China. Experiment 2 tested 20 subjects, half from Taipei and half from Taichung. Results showed that Taichung had lower pitch register than Taipei. It is surm...

An acoustic analysis of a German dialogue corpus showed that the sound qualities and durations of fricatives, vocoids, and diphthongs at the ends of question and statement utterances varied systematically with the utterance-final intonation segments, which were high-rising in the questions and terminal-falling in the statements. The ways in which the variations relate to phenomena like sibilant...

This paper reports the results of an experiment on the question of whether the realizations of f0 variations at the end of the final IP are categorical or gradient. We conducted an imitation task with resynthesized stimuli where the final pitch height was varied in steps of one semi-tone. Results are ambivalent, since both strategies are possible. However, we argue that there is enough evidence...

Birdsong is a learned behavior remarkable for its high degree of stereotypy. Nevertheless, adult birds display substantial rendition-by-rendition variation in the structure of individual song elements or "syllables." Previous work suggests that some of this variation is actively generated by the avian basal ganglia circuitry for purposes of motor exploration. However, it is unknown whether and ...

In this study, a novel approach is proposed for modeling speech parameter variations between neutral and stressed conditions and employed in a technique for stressed speech synthesis. The proposed method consists of modeling the variations in pitch contour, voiced speech duration, and average spectral structure using Hidden Markov Models (HMMs). While HMMs have traditionally been used for recog...

Emotional state recognition through speech is being a very interesting research topic nowadays. Using subliminal information of speech, denominated as “prosody”, it is possible to recognize the emotional state of the person. One of the main problems in the design of automatic emotion recognition systems is the small number of available patterns. This fact makes the learning process more difficu...

Stress has effect on speech characteristics and can influence the quality of speech. In this paper, we study the effect of SleepDeprivation (SD) on speech characteristics and classify Normal Speech (NS) and Sleep Deprived Speech (SDS). One of the indicators of sleep deprivation is ‘flattened voice’. We examine pitch and harmonic locations to analyse flatness of voice. To investigate, we compute...

The Momel algorithm provides an automatic factoring of raw fundamental frequency into two components: a microprosodic component, corresponding to local variations of pitch caused by the phonetic nature of the speech segments and a macroprosodic component corresponding to the overall pitch pattern of the utterance which is then represented as a sequence of pitch targets. An earlier evaluation es...