Sökning: "phonation"

Visar resultat 1 - 5 av 22 avhandlingar innehållade ordet phonation.

1. 1. 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

3. 2. Electroglottographic analysis of phonatory dynamics and states

   Författare :Andreas Selamtzis; Sten Ternström; Malte Kob; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; voice function; phonation; vocal fold vibration; vocal registers; electroglottography;

   Sammanfattning : The human voice is a product of an intricate biophysical system. The complexity of this system enables a rich variety of possible sounds, but at the same time poses great challenges for quantitative voice analysis. For example, the vocal folds can vibrate in several different ways, leading to variations in the acoustic output. LÄS MER

4. 3. The Voice Source in Speech Communication - Production and Perception Experiments Involving Inverse Filtering and Synthesis

   Författare :Christer Gobl; KTH; []
   Nyckelord :Voice source dynamics; glottal source parameters; source-filter interaction; voice quality; phonation; perception; affect; emotion; mood; attitude; paralinguistic; inverse filtering; knowledge-based; formant synthesis; LF model; fundamental frequency;

   Sammanfattning : This thesis explores, through a number of production andperception studies, the nature of the voice source signal andhow it varies in spoken communication. Research is alsopresented that deals with the techniques and methodologies foranalysing and synthesising the voice source. LÄS MER

5. 4. Alternative Measures of Phonation: Collision Threshold Pressure and Electroglottographic Spectral Tilt : Extra: Perception of Swedish Accents

   Författare :Laura Enflo; David House; Jonas Beskow; Sten Ternström; Francisco Lacerda; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustics; Akustik;

   Sammanfattning : The collision threshold pressure (CTP), i.e. the smallest amount of subglottal pressure needed for vocal fold collision, has been explored as a possible complement or alternative to the now commonly used phonation threshold pressure (PTP), i.e. LÄS MER

7. 5. Breathing and phonation : effects of lung volume and breathing behaviour on voice function

   Författare :Jenny Iwarsson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Abduction; Adduction; Breathing; Flow glottogram; Inhalation; Lung volume; Perceptual analysis; Phonation; Posture; Speech lung volume; Speech task; Subglottal pressure; Tracheal pull; Vertical laryngeal position; Vocal fold nodules; Voice source;

   Sammanfattning : Respiration is believed to play a central role in voice function and is thus of relevance to the clinical care of the disordered voice. The overall aim of the present study was to experimentally investigate relationships between the respiratory and phonatory systems. LÄS MER