Speech production results from a fine neuro-controlled coordination between breathing, phonatory and articulatory movements.In physical terms, these movements induce fluid-structure-acoustic interactions within the vocal tract. In theframework of source-filter theory (Fant 1960), the aerodynamic phase of speech is often overlooked, yet being of muc...
Porozumění vzniku a modelaci hlasového projevu člověku je nezbytným předpokladem pro nalezení odpovědí na otázky pokládané klinickou praxí. S ohledem na potřeby hlasových pedagogů a lékařů v klinické praxi je sestavení výpočetně efektivních matematických modelů, které umožňují počítačově simulovat lidskou fonaci a vyhodnocovat rozložení akustické e...
MRI is the gold standard modality for speech imaging. However, it remains relatively slow, which complicates imaging of fast movements. Thus, an MRI of the vocal tract is often performed in 2D. While 3D MRI provides more information, the quality of such images is often insufficient. The goal of this study was to test the applicability of super-reso...
Předmětem této práce je metoda konečných prvků a její využití při řešení akustických úloh a úloh proudění nestlačitelné tekutiny. Okrajové, resp. smíšené úlohy pro parciální diferenciální rovnice řešíme ve slabém smyslu. Součástí práce je vlastní implementace metody konečných prvků, která byla použitá k numerickému řešení vlnové rovnice v oblasti v...
Published in The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association
Transparent, patient-specific vocal tract replicas are helpful in research and educational endeavors but challenging to procure. An accessible method for fabricating these models, improving on previously suggested processes, would make them more widely available. Detailed instructions for fabricating a transparent, patient-specific vocal tract mode...
Published in Philosophical Transactions of the Royal Society B: Biological Sciences
A substantial body of acoustic and behavioural evidence points to the existence of two broad categories of laughter in humans: spontaneous laughter that is emotionally genuine and somewhat involuntary, and volitional laughter that is produced on demand. In this study, we tested the hypothesis that these are also physiologically distinct vocalizatio...
Sound production mechanisms set the parameter space available for transmitting biologically relevant information in vocal signals. Low–frequency rumbles play a crucial role in coordinating social interactions in elephants’ complex fission–fusion societies. By emitting rumbles through either the oral or the three-times longer nasal vocal tract, Afri...
The human voice plays a major role in interpersonal communication. A key property of the voice is its directionality, as it influences the energy distribution in the surrounding space and at the ear of the receiver. Research on this topic is of great relevance for architectural design, the development of new technologies in the field of telecommuni...
Published in Frontiers in Robotics and AI
Modeling speech production and speech articulation is still an evolving research topic. Some current core questions are: What is the underlying (neural) organization for controlling speech articulation? How to model speech articulators like lips and tongue and their movements in an efficient but also biologically realistic way? How to develop high-...
Published in Journal of Physics: Conference Series
With the growth of communication technology, reliability and security of communication devices became a challenging job. Voice biometrics are becoming increasingly popular as a promising alternative to traditional passwords to authenticate the user on devices for secure communication. Speech processing technology in voice identification may ensures...
