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COMD 5070 - Final Exam Questions With 100%Verified Answers A+GRADED
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COMD 5070 - Final Exam Questions With 100%Verified Answers A+GRADED what is science? what are the 4 features of the scientific method? - correct answer...-empirical -deterministic -predictive -parsimonious what does it mean for science to be empirical? - correct answer...based on data w...

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  • August 12, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • comd 5070 final exam questions with 100verified

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COMD 5070 - Final Exam Questions With
100%Verified Answers A+GRADED
what is science? what are the 4 features of the scientific method? - correct
answer...✔✔-empirical
-deterministic
-predictive
-parsimonious

what does it mean for science to be empirical? - correct answer...✔✔based on data

what does it mean for science to be deterministic? - correct answer...✔✔obeys
physical laws

what does it mean for science to be predictive? - correct answer...✔✔if you do this....
then that will happen

what does it mean for science to be parsimonious? - correct answer...✔✔uses the
simplest explanation possible

how many semitones are in one octave? - correct answer...✔✔12 semitones

how much sampling is enough? - correct answer...✔✔sample at 2x the rate of the
highest frequency (e.g. data up to 5 kHz = sample at 10 kHz, data up to 100 Hz =
sample at 200 Hz)

what is the Nyquist frequency? - correct answer...✔✔half the sample rate

if you want to go up one octave, you ______ the frequency. - correct answer...✔✔
double

if you want to go down one octave, you ______ the frequency. - correct answer...✔✔
halve

what does a high pass filter do? - correct answer...✔✔allows high frequencies through

what does a low pass filter do? - correct answer...✔✔allows low frequencies through

what does a band pass filter do? - correct answer...✔✔allows a band of frequencies
through (mid)

what does a band reject filter do? - correct answer...✔✔holds back/attenuates a band
of frequencies (allows high and low frequencies)


AGRADESOLUTIONS

, what does a Fourier transform do? - correct answer...✔✔creates a spectrum from the
time domain waveform (deconstructs the waveform)

what is the cake analogy to a Fourier transform? - correct answer...✔✔analyze a cake
to learn its ingredients

what does a time domain display show? - correct answer...✔✔-a waveform represents
sound directly
-air pressure changes over time

what does a frequency domain display show? - correct answer...✔✔a line spectrum
shows the frequency components of a periodic sound

what is a FFT spectrum? - correct answer...✔✔fast Fourier transform
-shows harmonic energy
-each peak is a harmonic
-less clear at showing formants

what is FFT reveal more of? - correct answer...✔✔vocal SOURCE

what is a LPC spectrum? - correct answer...✔✔linear predictive coding
-shows spectral envelope (doesn't show individual harmonics)
-good at revealing formants

what does a LPC spectrum reveal more of? - correct answer...✔✔vocal tract FILTER

on a spectrum, a sine wave appears as ___________. - correct answer...✔✔a single
line

a line spectrum is a _______ in time. - correct answer...✔✔snapshot

what is the x-axis in a speech spectrogram? - correct answer...✔✔X = TIME

what is the y-axis in a speech spectrogram? - correct answer...✔✔Y = FREQUENCY

what does the darkness in a speech spectrogram represent? - correct answer...✔✔
darkness = INTENSITY

what is the difference between perturbation and modulation? - correct answer...✔✔
modulation is much slower than random cycle-to-cycle perturbation; modulation is
spread across many cycles

what is jitter? - correct answer...✔✔frequency perturbation



AGRADESOLUTIONS

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