COMD 5070 - Final Exam ACTUAL
UPDATED Exam Questions and CORRECT
Answers
4 features of the scientific method - CORRECT ANSWER - Empirical: based on data
Deterministic: Obeys physical laws, things are not random
Predictive
Parsimonious: Use simplest explanation but no simpler
How many semitones in an octave? - CORRECT ANSWER - 12
What is the Nyquist frequency? - CORRECT ANSWER - Half the sample rate
The highest frequency the recording is able to reproduce
High pass filter - CORRECT ANSWER - Allows high frequencies through
Low pass filter - CORRECT ANSWER - Allows low frequencies through
Band pass filter - CORRECT ANSWER - Allows a band of frequencies through - holds
back higher and lower frequencies
Band reject filter - CORRECT ANSWER - Holds back a band of frequencies - allows high
and low frequencies through
What is the Fourier theorem? - CORRECT ANSWER - All periodic sounds are made of a
combination of sine waves. Amplitudes, phase angles and frequencies all vary
, What does a Fourier transform create? - CORRECT ANSWER - A spectrum from the time
domain waveform
What is the x-axis on a time-domain waveform? - CORRECT ANSWER - Time
What is the y-axis on a time-domain waveform? - CORRECT ANSWER - Amplitude
What is the x-axis on a frequency-domain line spectrum? - CORRECT ANSWER -
Frequency
What is the y-axis on a frequency-domain line spectrum? - CORRECT ANSWER -
Amplitude
What is the x-axis on a 3D spectrogram? - CORRECT ANSWER - Time
What is the y-axis on a 3D spectrogram? - CORRECT ANSWER - Frequency
What does darkness represent on a 3D spectrogram? - CORRECT ANSWER - Intensity
What is a Fast Fourier Transform (FFT)? - CORRECT ANSWER - Revealing of source.
Shows harmonic energy and range of harmonics in the sound.
What is Linear Predictive Coding (LPC) - CORRECT ANSWER - Revealing of filter.
Shows spectral envelope and where the resonant frequencies are.
What does a line spectrum show? - CORRECT ANSWER - A snapshot in time
What does a spectrogram show? - CORRECT ANSWER - Speech over time
UPDATED Exam Questions and CORRECT
Answers
4 features of the scientific method - CORRECT ANSWER - Empirical: based on data
Deterministic: Obeys physical laws, things are not random
Predictive
Parsimonious: Use simplest explanation but no simpler
How many semitones in an octave? - CORRECT ANSWER - 12
What is the Nyquist frequency? - CORRECT ANSWER - Half the sample rate
The highest frequency the recording is able to reproduce
High pass filter - CORRECT ANSWER - Allows high frequencies through
Low pass filter - CORRECT ANSWER - Allows low frequencies through
Band pass filter - CORRECT ANSWER - Allows a band of frequencies through - holds
back higher and lower frequencies
Band reject filter - CORRECT ANSWER - Holds back a band of frequencies - allows high
and low frequencies through
What is the Fourier theorem? - CORRECT ANSWER - All periodic sounds are made of a
combination of sine waves. Amplitudes, phase angles and frequencies all vary
, What does a Fourier transform create? - CORRECT ANSWER - A spectrum from the time
domain waveform
What is the x-axis on a time-domain waveform? - CORRECT ANSWER - Time
What is the y-axis on a time-domain waveform? - CORRECT ANSWER - Amplitude
What is the x-axis on a frequency-domain line spectrum? - CORRECT ANSWER -
Frequency
What is the y-axis on a frequency-domain line spectrum? - CORRECT ANSWER -
Amplitude
What is the x-axis on a 3D spectrogram? - CORRECT ANSWER - Time
What is the y-axis on a 3D spectrogram? - CORRECT ANSWER - Frequency
What does darkness represent on a 3D spectrogram? - CORRECT ANSWER - Intensity
What is a Fast Fourier Transform (FFT)? - CORRECT ANSWER - Revealing of source.
Shows harmonic energy and range of harmonics in the sound.
What is Linear Predictive Coding (LPC) - CORRECT ANSWER - Revealing of filter.
Shows spectral envelope and where the resonant frequencies are.
What does a line spectrum show? - CORRECT ANSWER - A snapshot in time
What does a spectrogram show? - CORRECT ANSWER - Speech over time
