COMD 5070 - Exam 3 Study Guide
2025/2026 Exam Questions and Correct
Answers | New Update
Science - 4 Characteristics - 🧠 ANSWER ✔✔Empirical
Deterministic
Predictive
Parsimonious
Empirical - 🧠 ANSWER ✔✔Based on collected data
Deterministic - 🧠 ANSWER ✔✔Obeys physical laws
Predictive - 🧠 ANSWER ✔✔When one phenomena occurs it will influence
another
Parsimonious - 🧠 ANSWER ✔✔Use the simplest explanation possible
,Semitones - 🧠 ANSWER ✔✔12 semitones per octave
Non-linear - each successive step (octave) is larger, though they sound as
if they are equal is increasing frequency
Semitone Standard Deviation (STSD) - 🧠 ANSWER ✔✔Used to measure
variability since they correspond more closely to pitch perception; using Hz
as a measure is difficult for humans to perceive
Using STSD makes values comparable for high or low mean F0
Sampling Rate - 🧠 ANSWER ✔✔The amount of which amplitudes recorded
to represent the analog sample, the more amplitudes the better the
representation which results in a large file needed
Sample rate is specified in Hz
Nyquist Frequency - 🧠 ANSWER ✔✔The highest frequency you can record
that can be accurately reproduced. Should be set for twice the highest
frequency in the sample.
Aliasing - 🧠 ANSWER ✔✔Sampling too little will inaccurately represent the
signal. E.g. high frequencies will be recorded too low, and vice versa for
low frequencies.
, Anti-aliasing - 🧠 ANSWER ✔✔Use low pass filter to prevent aliasing. E.g.
set to Nyquist frequency will result in frequencies above this being deleted
so they cannot contaminate the recording.
Modern recording systems do the filtering automatically
Filter Types - 🧠 ANSWER ✔✔Allow us to be selective about the
frequencies we examine.
Four types: High Pass, Low Pass, Band Pass and Band Reject.
High Pass Filter - 🧠 ANSWER ✔✔Allows high frequencies through,
attenuates (holds back) lower frequencies
Low Pass Filter - 🧠 ANSWER ✔✔Allows low frequencies though,
attenuates higher frequencies
Band Pass Filter - 🧠 ANSWER ✔✔Attenuates both high & low frequencies
Band Reject Filter - 🧠 ANSWER ✔✔Attenuates a specific band of
frequencies, allows both high & low frequencies through.
Fourier Analysis - 🧠 ANSWER ✔✔Creates a spectrum from the time
domain; allows us to analyze the formants (ingredients) of sound (cake).
Spectrum Types - 🧠 ANSWER ✔✔3D Spectrogram
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED 3
2025/2026 Exam Questions and Correct
Answers | New Update
Science - 4 Characteristics - 🧠 ANSWER ✔✔Empirical
Deterministic
Predictive
Parsimonious
Empirical - 🧠 ANSWER ✔✔Based on collected data
Deterministic - 🧠 ANSWER ✔✔Obeys physical laws
Predictive - 🧠 ANSWER ✔✔When one phenomena occurs it will influence
another
Parsimonious - 🧠 ANSWER ✔✔Use the simplest explanation possible
,Semitones - 🧠 ANSWER ✔✔12 semitones per octave
Non-linear - each successive step (octave) is larger, though they sound as
if they are equal is increasing frequency
Semitone Standard Deviation (STSD) - 🧠 ANSWER ✔✔Used to measure
variability since they correspond more closely to pitch perception; using Hz
as a measure is difficult for humans to perceive
Using STSD makes values comparable for high or low mean F0
Sampling Rate - 🧠 ANSWER ✔✔The amount of which amplitudes recorded
to represent the analog sample, the more amplitudes the better the
representation which results in a large file needed
Sample rate is specified in Hz
Nyquist Frequency - 🧠 ANSWER ✔✔The highest frequency you can record
that can be accurately reproduced. Should be set for twice the highest
frequency in the sample.
Aliasing - 🧠 ANSWER ✔✔Sampling too little will inaccurately represent the
signal. E.g. high frequencies will be recorded too low, and vice versa for
low frequencies.
, Anti-aliasing - 🧠 ANSWER ✔✔Use low pass filter to prevent aliasing. E.g.
set to Nyquist frequency will result in frequencies above this being deleted
so they cannot contaminate the recording.
Modern recording systems do the filtering automatically
Filter Types - 🧠 ANSWER ✔✔Allow us to be selective about the
frequencies we examine.
Four types: High Pass, Low Pass, Band Pass and Band Reject.
High Pass Filter - 🧠 ANSWER ✔✔Allows high frequencies through,
attenuates (holds back) lower frequencies
Low Pass Filter - 🧠 ANSWER ✔✔Allows low frequencies though,
attenuates higher frequencies
Band Pass Filter - 🧠 ANSWER ✔✔Attenuates both high & low frequencies
Band Reject Filter - 🧠 ANSWER ✔✔Attenuates a specific band of
frequencies, allows both high & low frequencies through.
Fourier Analysis - 🧠 ANSWER ✔✔Creates a spectrum from the time
domain; allows us to analyze the formants (ingredients) of sound (cake).
Spectrum Types - 🧠 ANSWER ✔✔3D Spectrogram
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED 3
