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Vocal skills development in public speaking, stage speech and singning in the phonetic perspective
Hanžlová, Adléta ; Volín, Jan (advisor) ; Skarnitzl, Radek (referee)
The most common form of interpersonal communication is using human voice. Interest in the development of vocal skills can be found in ancient texts, but the approach to voice development throughout history is often not supported by systematic research. The purpose of this study, therefore, was to examine literature used in university courses focused on vocal skills development in three felds - public speaking, stage speech and singing - as to their phonetic grounding. Based on a search of university curricula, twenty publications were selected for analysis. Based on recurring themes across the publications, a set of thematic categories was identifed for each of the felds examined, into which the publications' contents were sorted. Relevant thematic categories were then assessed in terms of awareness of fve acoustic-phonetic operational domains - fundamental frequency, sound spectrum, amplitude, temporal characteristics and articulation. In stage sppech publications, there was a noticeable overlap with one domain in each category. In public speaking manuals, the domain representation was similar, but for the category of resonance overlapped equally with the amplitude and spectral domain. In singing publications, multiple domains were represented in each category and the spectral domain was...
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Production and perception of melody in whisper
Hanžlová, Adléta ; Bořil, Tomáš (advisor) ; Houzar, Alžběta (referee)
Melody is a suprasegmental feature of speech and its perception depends mainly on the speed of vocal fold oscillation reflected in the fundamental frequency (f0). Whisper is defined by the absence of phonation and therefore the lack of fundamental frequency. Intended melody in whisper, however, seems to be discernable regardless of this lack of f0. In my thesis, I consider the topic of melody in whisper from a perceptual and acoustic point of view. I present a perception experiment assessing the discernability of melody in whispered words as well as words sung in whisper. This experiment proved that melody in whisper in certain cases can in fact be discerned. I then further assess the effect of intended melody in whisper on formant frequencies, formant to formant ratios, center of gravity and spectral slope. In whispered speech, the acoustical parameters affected by intended melody turned out to be F2 and center of gravity of stop-band filtered signal with frequencies containing main formanth bandwidths removed. In words sung in whisper, the affected parameters are F2, F3, F2:F1 and F3:F2 ratios, center of gravity and spectral slope.
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