COMD 5070 Final Exam (Latest 2024 / 2025 Update) Acoustics of Speech and Hearing | Questions and Verified Answers | 100% Correct | Grade A - Utah
Question:
what is the Nyquist frequency?
Answer:
half the sample rate
Question:
if you want to go up one octave, you ______ the frequency.
Answer:
double
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Question:
if you want to go down one octave, you ______ the frequency.
Answer:
halve
Question:
what does a high pass filter do?
Answer:
allows high frequencies through
Question:
what does a low pass filter do?
Answer:
allows low frequencies through
Question:
what does a band pass filter do?
Answer:
allows a band of frequencies through (mid)
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Question:
what does a band reject filter do?
Answer:
holds back/attenuates a band of frequencies (allows high and low frequencies)
Question:
what does a Fourier transform do?
Answer:
creates a spectrum from the time domain waveform (deconstructs the waveform)
Question:
what is the cake analogy to a Fourier transform?
Answer:
analyze a cake to learn its ingredients
Question:
what does a time domain display show?
Answer:
-a waveform represents sound directly -air pressure changes over time 3 / 4
Question:
what does a frequency domain display show?
Answer:
a line spectrum shows the frequency components of a periodic sound
Question:
what is a FFT spectrum?
Answer:
fast Fourier transform -shows harmonic energy -each peak is a harmonic -less clear at showing formants
Question:
what is FFT reveal more of?
Answer:
vocal SOURCE
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