EMT 4 Flashcards
What is the glottis
Space between the TVFs
Describe glottal onset
TVFs close before exhalation begins
Describe aspirate onset
Exhalation begins before TVFs close, either abruptly or gradually
Describe smooth onset
Exhalation and TVF movement occur simultaneously
What is thoracic fixation
Bracing of the chest during strenuous activities triggering FVF to close to protect airway
Or in throat clearing/ coughing to boost air pressure
Mid FVF
Comfortable speaking
Constrict FVF
FVF are moved inwards towards their closed position
Retract FVF
FVFs are moved outward from Mid to widely open position
Triggers for FVF constriction
- ends of phrases (holding back the breath)
- high intensity voice qualities, such as Opera and Belt (strenuous vocal activities)
- emotionally challenging entrances (due to stage fright or due to exposure)
- high notes, low notes (strenuous vocal activities)
Cue for FVF retraction
Silent laugh
What is subglottic pressure
When the TVFs are closing or closed, air pressure builds up beneath them – subglottal (below-the-glottis) air pressure. When the TVFs open, subglottal air pressure drops.
The air pressure changes that occur as a result of TVF vibration make the sound waves that resonate within the vocal tract and propogate into the space around the speaker/singer.
What influences subglottic pressure
The extent to which the true vocal folds close, and the length of time that they remain closed
The amount of pressure that builds is directly related to the intensity or volume of the vocal
What is the fundamental frequency
The pitch. Cycles per second of sound waves
What causes harmonics
Periodic (regular) cycling of vibrations. Whole number multiples of the fundamental frequency
Other names for harmonics
Overtones
Partials
