COMD 5070 - Final Exam Questions & Answers 100% Correct!!
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COMD 5070 -
Institution
COMD 5070 -
what is science? what are the 4 features of the scientific method? - ANSWER--empirical
-deterministic
-predictive
-parsimonious
what does it mean for science to be empirical? - ANSWER-based on data
what does it mean for science to be deterministic? - ANSWER-obeys physical laws
what does...
COMD 5070 - Final
Exam Questions &
Answers 100%
Correct!!
what is science? what are the 4 features of the scientific method? - ANSWER--empirical
-deterministic
-predictive
-parsimonious
what does it mean for science to be empirical? - ANSWER-based on data
what does it mean for science to be deterministic? - ANSWER-obeys physical laws
what does it mean for science to be predictive? - ANSWER-if you do this.... then that will happen
what does it mean for science to be parsimonious? - ANSWER-uses the simplest explanation possible
how many semitones are in one octave? - ANSWER-12 semitones
how much sampling is enough? - 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? - ANSWER-half the sample rate
, if you want to go up one octave, you ______ the frequency. - ANSWER-double
if you want to go down one octave, you ______ the frequency. - ANSWER-halve
what does a band reject filter do? - ANSWER-holds back/attenuates a band of frequencies (allows
high and low frequencies)
what does a Fourier transform do? - ANSWER-creates a spectrum from the time domain waveform
(deconstructs the waveform)
what is the cake analogy to a Fourier transform? - ANSWER-analyze a cake to learn its ingredients
what does a time domain display show? - ANSWER--a waveform represents sound directly
-air pressure changes over time
what does a frequency domain display show? - ANSWER-a line spectrum shows the frequency
components of a periodic sound
what is a FFT spectrum? - ANSWER-fast Fourier transform
-shows harmonic energy
-each peak is a harmonic
-less clear at showing formants
what is FFT reveal more of? - ANSWER-vocal SOURCE
what is a LPC spectrum? - ANSWER-linear predictive coding
-shows spectral envelope (doesn't show individual harmonics)
-good at revealing formants
what does a LPC spectrum reveal more of? - ANSWER-vocal tract FILTER
on a spectrum, a sine wave appears as ___________. - ANSWER-a single line
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