COMD 5070 – Final UPDATED Actual
Questions and CORRECT Answers
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)
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
Questions and CORRECT Answers
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)
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
