Intro-Anatomy-Normal Voice Development Flashcards
What are the 3 perceptual characteristics of sound with their physical correlates?
Pitch - frequency
Loudness or intensity - amplitude
Quality or timbre - harmonic constitution or waveform
What is frequency?
What does it describe?
The number of vibrations per second.
Description of the speed at which molecules are moving.
One vibration is equal to what?
One compression AND rarefaction cycle.
What is frequency measured in?
Hertz = cycles per second
What 4 things is frequency determined by?
1) size of the sound source
2) material or composition of the source
3) shape of the source
4) manner in which the sound source is set into motion
What is an octave?
Interval between any two notes in which the ratio of frequencies of the notes is 2:1
What is the frequency of middle C on a piano?
261 Hz
What is the average frequency of a male voice? Female?
Male = 130 Hz Female = 210 Hz
What is intensity? What is intensity measured in?
Intensity is the amount of energy expended - measured in decibels (dB)
Two sounds of the same frequency with different intensity differ how?
There is greater displacement.
What determines the quality of what we hear in a voice?
Harmonic constitution or waveform
What is a periodic sound?
Sound produced in continuous, regular pattern. Produced with harmonics or overtones which are pleasant and less dissonant to the listener.
What is an aperiodic sound?
Sound that does not have a harmonic relationship that exists in periodic tones. Can have components at all frequencies.
_______ has both periodic and aperiodic complex sounds.
Speech
_____ are more periodic than ______ sounds.
Vowels; consonants.
What are the 3 main areas in which we target a person’s voice in therapy?
1 - frequency
2 - intensity
3 - quality
Speech occurs as a result of what 4 main processes?
1 - respiration
2 - phonation
3 - resonance
4 - articulation
What is the source of strength for the voice?
Respiration
Respiration for speech and singing requires sustained _______.
Exhalation
What structures comprise the respiratory tract?
Nose and mouth, nasopharynx and oropharynx, hypopharynx, larynx, trachea, tracheal bifurcation, broncial tubes, bronchioles, and alveolar sacs
What is the glottis?
Space between the true vocal folds
What is the ventricle?
The space between the true and false vocal folds
What are the 2 main purposes of the ventricle?
Provides a space for the VF to vibrate; provides lubrication for the true VF.
What is the primary muscle of respiratory control?
Diaphragm
At rest breathing is a(n) ________ process.
Passive
For voice or speech, exhalation is a(n) _______ process.
Active
What structure produces phonation?
Larynx
What are the 3 primary functions of the laryngeal valve?
1 - protect the lungs
2 - set the thoracic cavity for greater strength in lifting and pushing
3 - preventing exhalation to build up pressure for a cough to dislodge foreign matter
Voice is a(n) _______ function of the larynx.
Overlaid
The larynx is capable of forming a valve because of what three things?
1 - fixed framework
2 - abduction/adduction (intrinsic muscles)
3 - framework support (extrinsic muscles)
What are the 6 types of cartilages in the larynx? Are there one or two of each cartilage?
1 - cricoid cartilage (1) 2 - thyroid cartilage (1) 3 - arytenoid cartilages (2) 4 - cuneiform cartilages (2) 5 - corniculate cartilages (2) 6 - epiglottis (1)
What are the cartilages of the larynx covered with?
Perichondrium (aka conus elasticus)
What cartilage forms the base for the laryngeal structures?
Cricoid cartilage
What is the cricoid cartilage connected to the thyroid cartilage with?
Cricothyroid ligament
What is significant about the cricothyroid ligament?
It is the site of a tracheotomy