303 hw/quizzes for final exam || with correct solutions.
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Course
Csd 303
Institution
Csd 303
What happens to a speech signal when it is sampled digitally?
Loss of frequencies lower than twice the sampling rate
Loss of frequencies lower than half the sampling rate
Loss of frequencies higher than twice the sampling rate
Loss of frequencies higher than half the sampling rate corr...
303 hw/quizzes for final e xam || with correct solutions.
What happens to a speech signal when it is sampled digitally? Loss of frequencies lower than twice the sampling rate Loss of frequencies lower than half the sampling rate Loss of frequencies higher than twice the sampling rate Loss of frequencies higher than half the sampling rate correct answers d
What sampling rate should you use if you want to capture frequencies up to 12,000 Hz? Give the answer in Hz. correct answers 24,000
Which of the following best describes how Botox treatment affects individuals with spasmodic dysphonia (SD)?
Botox reduces breathiness by strengthening the vocal fold muscles Botox increases intelligibility by weakening the vocal fold muscles Botox is not an effective treatment for SD correct answers b
Approximately what sampling rate do you need to capture sounds within the frequency range of human hearing? correct answers 40,000 bc the highest freq humans can detect is 20,000
Approximately what sampling rate do you need to capture all the relevant frequencies for speech communication? correct answers 22,000
sampling rate = 8000 Hz
what is nyquist rate correct answers 4000
How many different possible amplitude values can a digital speech signal have if it is quantized at 10 bits? correct answers 2^10= 1024
If a window contains 550 samples and the sampling rate is 22,050 Hz (samples per second), how long is the window correct answers 24.9 m/s
What size analysis window should you choose if you need to have good time resolution? correct answers short
The auto-correlation method of pitch tracking finds the correlation of a periodic signal with itself at different lags. Discounting a lag of 0, which has a perfect correlation, the lag at which
the correlation will be highest is: correct answers 1 period
A person vocalizes at a pitch of 200 Hz while an auto-correlation function tracks the pitch. The pitch tracker does a fairly good job, but reports inaccurate values for some analysis windows. Which of the following values is the most likely to show up among the errors? 175 225 400 correct answers 400
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