Phonation Function Day 2

The psychological correlate of frequency

pitch

the number of cycles of vibration per second

frequency

pitch _____ as frequency increases

increases

F₀

Fundamental Frequency

Fundamental frequency is the ….

average rate of VF vibration

increase in pitch is accompanied by increase in. . .

tension and length of VF

length of VF at various pitches NEVER exceeds the length of the ____ VF

abducted

At extremely high pitches, VF tend to fail to. . .

close/adduct

voice quality is _____ at higher pitches

breathy

the frequency of vibration that is most efficient for a pair of vocal folds (also varies with gender and age)

optimal pitch

the frequency consistently used by a person

habitual pitch

a mismatch in habitual and optimal pitch causes ____ when sustaining phonation

vocal fatigue

Pitch range is reduced by

pathology

pitch range is increased through

vocal training

calculated as difference between lowest and highest frequencies

pitch range

increase in mass of VF causes them to vibrate ___

slower

pitch-changing mechanism uses ___ __and__ __ muscles

cricothyroid and thyrovocalis

degree in stretching force

longitudinal tension

slow vibration =

low pitch

The psychological correlate of intensity

loudness

extent of force with which VFs are brought together at midline

medial compression

increase vocal intensity of vibrating VFs by

increasing subglottal pressure and medial compression

Vibration of VFs depends on

myoelastic and aerodynamic component

component is airflow and compression through the compressed tube

aerodynamic

component of muscle and the soft tissues of the larynx

myoelastic

explains complexity of the vibration of VFs

Titze Model

makes up the membranous cover of the vocal folds

Squamous epithelium and Superficial LP

makes up the body of the vocal folds

ILP, DLP, and thyrovocalis

ENT, no magnification (anterior = top)

indirect laryngosocpy

Involves magnification, tube with light source to illuminate area (anterior = bottom)

direct laryngosocopy

light source is strobed so you can view VF vibrations

stroboscopy