17 - Representing Disordered Acoustics (I)

Question 1

What 2 parameters does an oscillogram plot (ie. x and y axes)?

Answer 1

Amplitude vs Time Waveforms

Question 2

What 2 parameters does a spectrogram plot (ie. x and y axes)?

Answer 2

Frequency vs Time

Question 3

What is a wide band spectrogram especially good for?

Answer 3

Resolving formant frequencies

Question 4

What is a narrow band spectrogram especially good for?

Answer 4

Resolving harmonics and F0

Question 5

What 2 parameters does a spectrum plot (ie. x and y axes)?

Answer 5

Amplitude vs Frequency (a single slice in time)

Question 6

What does FFT stand for?

Answer 6

Fast Fourier Transform

Question 7

What does LPC stand for?

Answer 7

Linear Predictive Coding (reflected by the red line on a spectrogram)

Question 8

The FFT and LPC are mathematical methods of transforming a time vs amplitude waveform into what?

Answer 8

A spectrum (frequency vs amplitude)

Question 9

Formant tracking is basically an extension of what type of analysis?

Answer 9

LPC

Question 10

True or False: An oscillogram is good for measuring voice onset time, Formant frequency, and Harmonics

Answer 10

False: An oscillogram is good for measuring Voice Onset Time, Segment Durations, and F0 (pitch)

Question 11

Name 3 of the 5 measures that Wide Band Spectrograms are good for

Answer 11

Voice Onset Time
Segment Durations
Fricative/Stop Frequency
Formant Frequency
Formant Contours

Question 12

Name 1 of the 3 measures that Narrow Band Spectrograms are good for

Answer 12

F0 (pitch)
F0 Contours
Harmonics

Question 13

Name 1 of the 3 measures that Formant Tracking is good for

Answer 13

Fricative/Stop Frequency
Formant Frequency
Formant Contours

Question 14

Name 1 of the 2 measures that Spectra LPC is good for

Answer 14

Fricative/Stop Frequency

Formant Frequency

Question 15

Name 2 of the 4 measures that Spectra FFT is good for

Answer 15

Fricative/Stop Frequency
Formant Frequency
F0 (pitch)
Harmonics