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COMD 5070 EXAM 3 | 2025-2026 LATEST UPDATED | ACTUAL
EXAM QUESTIONS WITH SOLUTIONS | 100% RATED
CORRECT | 100% VERFIED SOLTIONS | ALREADY GRADED
A+
What is science? (4 features of the scientific method) - (answer)1. Empirical
2. Deterministic
3. Predictive
4. Parsimonious
Empirical - (answer)based on data
Deterministic - (answer)Obeys the laws of physics
Predictive - (answer)cause-and-effect relationships
Parsimonious - (answer)use the simplest explanation possible
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semitone - (answer)smallest distance between two pitches (half step)
How many semitones are in one octave? - (answer)12
How many semitones are in two octaves? - (answer)24
If you want to go up one octave, you ______ the frequency. But if you want to go
down an octave, you _____ the frequency. - (answer)Double, halve
how many hertz is in an octave? - (answer)There's no fixed number of hertz
between octaves
sampling rate - (answer)frequency with which numbers are stored or written down
to represent the analog signal that you're sampling
- measured in Hz (how many samples stored in one second)
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Nyquist frequency - (answer)half the sample rate
represents the highest frequency that your recording can accurately reproduce
when you play it back
ex. if you want to go up to 10 kHz, you have to double that number to choose a
sample frequency
sampling theorem - (answer)gives the minimum sampling rate which allows the
original signal to be reconstructed perfectly
aliasing - (answer)one sound is misrepresented as another
another concept to think about when choosing a sample rate
if you record a signal at a too-slow sample rate, there will be things happening in
the original signal that occur between the samples or snapshots you take
(inaccurately records the original signal)
filtering before digitizing prevents this (using a low-pass filter for anti-aliasing)
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Example sampling: If the data is 5 kHz, you should sample at ______ kHz. -
(answer)10
How does sampling rate relate to playback quality? - (answer)The more samples
you take, the better chance you have of representing the original signal.
what does a filter do? - (answer)removes certain things you don't want
allow you to be selective in what frequencies come through
filter types - (answer)high pass
low pass
band pass
band reject
high pass filter - (answer)Only allows high frequencies to pass through.
COMD 5070 EXAM 3 | 2025-2026 LATEST UPDATED | ACTUAL
EXAM QUESTIONS WITH SOLUTIONS | 100% RATED
CORRECT | 100% VERFIED SOLTIONS | ALREADY GRADED
A+
What is science? (4 features of the scientific method) - (answer)1. Empirical
2. Deterministic
3. Predictive
4. Parsimonious
Empirical - (answer)based on data
Deterministic - (answer)Obeys the laws of physics
Predictive - (answer)cause-and-effect relationships
Parsimonious - (answer)use the simplest explanation possible
,2|Page
semitone - (answer)smallest distance between two pitches (half step)
How many semitones are in one octave? - (answer)12
How many semitones are in two octaves? - (answer)24
If you want to go up one octave, you ______ the frequency. But if you want to go
down an octave, you _____ the frequency. - (answer)Double, halve
how many hertz is in an octave? - (answer)There's no fixed number of hertz
between octaves
sampling rate - (answer)frequency with which numbers are stored or written down
to represent the analog signal that you're sampling
- measured in Hz (how many samples stored in one second)
,3|Page
Nyquist frequency - (answer)half the sample rate
represents the highest frequency that your recording can accurately reproduce
when you play it back
ex. if you want to go up to 10 kHz, you have to double that number to choose a
sample frequency
sampling theorem - (answer)gives the minimum sampling rate which allows the
original signal to be reconstructed perfectly
aliasing - (answer)one sound is misrepresented as another
another concept to think about when choosing a sample rate
if you record a signal at a too-slow sample rate, there will be things happening in
the original signal that occur between the samples or snapshots you take
(inaccurately records the original signal)
filtering before digitizing prevents this (using a low-pass filter for anti-aliasing)
, 4|Page
Example sampling: If the data is 5 kHz, you should sample at ______ kHz. -
(answer)10
How does sampling rate relate to playback quality? - (answer)The more samples
you take, the better chance you have of representing the original signal.
what does a filter do? - (answer)removes certain things you don't want
allow you to be selective in what frequencies come through
filter types - (answer)high pass
low pass
band pass
band reject
high pass filter - (answer)Only allows high frequencies to pass through.
