An Acoustic Method to Quantify Perceived Vocal Tremor:

Method Illustrations and Sound Files

Phonology ProjectWaisman Center

University of Wisconsin-Madison

Fourakis, M. [2010]. An acoustic method to quantify perceived vocal tremor. [Tech. Rep. No. 16]

Waveform and amplitude envelope of the vowel in the word “did” produced by Participant 4.

Slide 1

Running RMS power plot of the word “did.”

Slide 2

Spectrum taken in the middle of the power plot, showing the lowest frequency peak at about 9 Hz.

Slide 3

• Participant 1 “head”“I go to her him go * <he> head her him new <t> teacher”

• Participant 1 “she”“She needs strawberry jam on her toast” *

• Participant 3 “dad”“Dad”

• Participant 3 “he is”“He’s in a different class”

Slide 4

• Participant 3 “pool”“I went (to the) pool”

• Participant 3 “you”“pushes you back”

• Participant 4 “have”“he because he can’t have galactosemia”

• Participant 4 “he” “he because he can’t have galactosemia”

Slide 5

• Participant 5 “did”“we did

• Participant 5 “pool”“we went to the pool”

• Participant 5 “saw”“I saw fish”

• Participant 5 “then”“then we went back to the hotel”

• Participant 5 “we” “We um we went there we stayed at two hotels

Slide 6