Week One Flashcards
Why is voice important?
- Conveys information
- Shows feeling and emotion
- Important for SLTs
What are the nine primary symptoms of voice disorders?
- Hoarseness (breathy and rough)
- Vocal fatigue
- Breathy/husky voice
- Reduced phonational range (pitch and volume range)
- Aphonia (no sound)
- Pitch breaks or inappropriately high pitch (puberphonia)
- Strained or struggle voice
- Tremor
- Pain or other physical symptoms
What types of instruments are there for laryngeal imaging?
- mirror exam
- Flexible or rigid endoscopy
- Laryngeal videostroboscopy
- High speed videoendoscopy
- Direct laryngoscopy
In a perceptual voice assessment, what things areas are you investigating?
Pitch
- mono, inappropriate, breaks, reduced range
- monotone
Loudness
- mono, variation, reduced range
Quality
- Hoarse/rough, breathy, tension, tremor, strain/struggle, sudden interruption, diplophonia
Other behaviours
- Stridor, excessive throat clearing
Aphonia
- Consistent, episodic
What is the fundamental frequency?
Lowest vibrating frequency of the vocal folds
What is the mean fundamental frequency?
The average fundamental frequency used over a given sample
Males= 100 - 150 Hz Females= 180 - 250 Hz
What is frequency variability?
Measure of how variable the fundamental frequency is over a given sample
What is the phonational range?
Range of frequencies that can be produced by the voice
What is the frequency perturbation (aka vocal jitter)
Refers to the irregularity of the vibration rate of the VFs
What is the overall sound pressure level?
The average sound pressure level given over a sample
What is the amplitude variability?
How variable the amplitude is over a given sample
What is the dynamic range?
Range of vocal intensities a speaker can produce (50 - 115 dB)
What is amplitude perturbation?
variabiltity of amplitude of VF vibration from one cycle to the next
What is the signal to noise ratio?
Measure of the contribution of voice and noise to the final output. Normal voice has low levels of noise, disordered VF vibration is associated with higher levels of noise
What is voice tremor?
Regular variation in fundamental frequency or amplitude of voice
