COMD 5070 Final Exam: Study Guide & Practice Questions

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COMD 5070 FINAL EXAM (LATEST 2025 UPDATE)

ACOUSTICS OF SPEECH AND HEARING | QUESTIONS

AND VERIFIED ANSWERS | 100% CORRECT | GRADE

A - UTAH

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

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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 high pass filter do? .....ANSWER.....allows high

frequencies through

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what does a low pass filter do? .....ANSWER.....allows low

frequencies through

what does a band pass filter do? .....ANSWER.....allows a band

of frequencies through (mid)

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