Sökning: "Vocal Tract Acoustics"

Hittade 4 avhandlingar innehållade orden Vocal Tract Acoustics.

  1. 1. Modelling the Production and Propagation of Sound in Individual Human Vocal Tracts

    Författare :Lukas Schickhofer; Mihai Mihaescu; Anders Dahlkild; Manfred Kaltenbacher; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomechanics; Vocal Tract Acoustics; Numerical Flow Simulation; Fluid-Structure Interaction;

    Sammanfattning : Voice generation and the expression through speech are of vital importance for communication. The human upper airways are the origin of the process of speech production, which involves a modulation of the periodically pulsed pressure from the lungs by the vocal tract volume. LÄS MER

  3. 2. From Acoustics to Articulation : Study of the acoustic-articulatory relationship along with methods to normalize and adapt to variations in production across different speakers

    Författare :Gopal Ananthakrishnan; Olov Engwall; Gérard Bailly; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Acoustic-Articulatory relationship; speaker normalization;

    Sammanfattning : The focus of this thesis is the relationship between the articulation ofspeech and the acoustics of produced speech. There are several problems thatare encountered in understanding this relationship, given the non-linearity,variance and non-uniqueness in the mapping, as well as the differences thatexist in the size and shape of the articulators, and consequently the acoustics,for different speakers. LÄS MER

  4. 3. Sound Generation and Propagation in the Human Upper Airways

    Författare :Lukas Schickhofer; Mihai Mihaescu; Anders Dahlkild; Mats Karlsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Mechanics; Teknisk mekanik;

    Sammanfattning : The human upper airways embrace the source of phonation and affect the modulation of the voice, which is of vital importance for communication. Moreover, unwanted sounds may be generated in the upper airways due to elastic, collapsible parts that are susceptible to flow-induced vibration and resonance. LÄS MER

  5. 4. Articulatory-Acoustic Relationships in Swedish Vowel Sounds

    Författare :Christine Ericsdotter; Olle Engstrand; Björn Lindblom; Peter Ladefoged; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Swedish vowels; articulatory modelling; MRI; Phonetics; Fonetik;

    Sammanfattning : The goal of this work was to evaluate the performance of a classical method for predicting vocal tract cross-sectional areas from cross-distances, to be implemented in speaker-specific articulatory modelling. The data forming the basis of the evaluation were magnetic resonance images from the vocal tract combined with simultaneous audio and video recordings. LÄS MER