COMD 5070 Final exam study guide with complete solutions
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Course
COMD 5070
Institution
COMD 5070
COMD 5070 Final exam study guide with
complete solutions
4 Types of science - Answer️️ -1. Empirical
2. Deterministic
3. Predictive
4. Persimonious
Empirical - Answer️️ -Based on data
Deterministic - Answer️️ -Obeys physical laws/not random.
Follows rules of cause and effect.
P...
The Nyquist Frequency - Answer✔️✔️-• Nyquist is half sample rate
• Highest frequency you can reproduce
• Sample at twice the rate of highest frequency in a signal
• Data up to 100 Hz --> sample at 200 Hz
• Data to 5 kHz ---> sample at 10 kHz
Decision for sampling rate involves the Nyquist Frequency - Answer✔️✔️-1. Find out
frequencies that are of interest to your purpose
-Ex: if you want 10 kHz, double number and choose sample frequency 20 kHz
- CDs sample rate is 44.1 kHz (44,100 samples/second)
- Sounds played from CD can go up to 22,050 Hz (Nyquist frequency)
- 22,050 corresponds to most people's hearing capacity.
Sampling rate devices - Answer✔️✔️--devices that allow to choose playback qualities at
highest quality rate result in shortest amount of recording time because finite amount of
memory within device.
-For a longer recording you would need to settle for a slightly lower quality of sound
recorded.
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