Sökning: "Subglottal pressure"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Subglottal pressure.

  1. 1. Collision Threshold Pressure : A novel measure of voice function Effects of vocal warm-up, vocal loading and resonance tube phonation in water

    Författare :Laura Enflo; Anita McAllister; Johan Sundberg; Marc de Bodt; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The phonation threshold pressure (PTP), i.e., the smallest amount of subglottal pressure needed to initiate and sustain vocal fold oscillation, is frequently difficult to measure due to the difficulty for some subjects to produce extremely soft phonation. In addition, PTP values are often quite scattered. LÄS MER

  3. 2. Clinical and Experimental Aspects of Phonetogram Analysis

    Författare :Leif Åkerlund; Lunds universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Otorhinolaryngology; subglottal pressure.; sound pressure level; semitones; phonetogram contours; phonetogram; intensity; Fundamental frequency; audiology; auditive system and speech; Otorinolaryngologi; audiologi; hörsel- och talorganen;

    Sammanfattning : A phonetogram is a diagram displaying sound pressure levels (SPL) of softest and loudest possible phonation over the entire fundamental frequency range (F0) of a voice. Female singers mean phonetogram had a significantly higher upper contour than female nonsingers. LÄS MER

  4. 3. Why so different? - Aspects of voice characteristics in operatic and musical theatre singing : Aspects of voice characteristics in operatic and musical theatre singing

    Författare :Eva Björkner; Anders Askenfelt; Ronald C. Scherer; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; operatic singing; musical theatre singing; voice source; subglottal pressure; flow glottogram; inverse filtering; formant frequencies; amplitude quotient AQ ; Music; Musikvetenskap;

    Sammanfattning : This thesis addresses aspects of voice characteristics in operatic and musical theatre singing. The common aim of the studies was to identify respiratory, phonatory and resonatory characteristics accounting for salient voice timbre differences between singing styles. LÄS MER

  5. 4. From Air to Aria. Relevance of Respiratory Behaviour to Voice Function in Classical Western Vocal Art

    Författare :Monica Thomasson; KTH; []
    Nyckelord :Abdominal wall; breathing; consistency; inhalation; lung volume; respiratory behaviour; phonation; rib cage; singers; singing; subglottal pressure; tracheal pull; vertical laryngeal position; voice source.;

    Sammanfattning : While previous studies of opera singers’respiratorybehaviour have focused on kinematic or dynamic aspects mainly,this thesis attempts to adopt a broader perspective. Not onlylung volumes, rib cage and abdominal wall kinematics areconsidered, but also the effects of lung volumes and respiratorybehaviour on phonation characteristics. LÄS MER

  7. 5. Aerodynamic measurements of normal voice

    Författare :Eva Holmberg; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Normal voice; inverse filtering; glottal airflow waveform; subglottal air pressure; Phonetics; Fonetik; Phonetics; fonetik;

    Sammanfattning : Vocal fold vibration results from an alternating balance between subglottal air pressure that drives the vocal folds apart and muscular, elastic, and restoring forces that draw them together. The aim of the present thesis is to present quantitative data of normal vocal function using a noninvasive method. LÄS MER