Maximum Measures of Vocal Capacity

Question 1

Maximum Phonation Time

Answer 1

• say “ah” for as long as you can at a comfortable pitch
• start whenever your ready ; take a deep breath in
• 15-25 seconds; if longer too much laryngeal tension

Question 2

Loudness Range

Answer 2

“ah” soft, “ah” long without screaming
- 20-30 dB

Question 3

Jitter

Answer 3

• short term variation in frequency (pitch perturbation)

Question 4

Shimmer

Answer 4

• short term variation in amplitude (amplitude perturbation)
• how far apart vocal folds are opening

Question 5

Signal to Noise Ratio

Answer 5

• intensity of signal realted to background noise

Question 6

Cepstral Analysis

Answer 6

• used for connected speech