Phonology Project Waisman Center University of Wisconsin-Madison An Acoustic Method to Quantify Perceived Vocal Tremor: Method Illustrations and Sound Files Phonology Project Waisman Center University of Wisconsin-Madison Fourakis, M. [2010]. An acoustic method to quantify perceived vocal tremor. [Tech. Rep. No. 16]

Slide 1 Waveform and amplitude envelope of the vowel in the word “did” produced by Participant 4.

Running RMS power plot of the word “did.” Slide 2 Running RMS power plot of the word “did.”

Slide 3 Spectrum taken in the middle of the power plot, showing the lowest frequency peak at about 9 Hz.

Slide 4 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 5 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”

Slide 6 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