COMD 5070 Quiz UPDATED ACTUAL
Exam Questions and CORRECT Answers
Air Pressure Changes - CORRECT ANSWER - Alterations in air pressure as sound travels
through air.
Frequency of Sound Wave - CORRECT ANSWER - Number of vibrations of air
molecules per second.
Intensity of Sound - CORRECT ANSWER - Power in watts divided by area.
Amplitude of Sound Wave - CORRECT ANSWER - Height of the sound wave.
Inverse Square Law - CORRECT ANSWER - Intensity decreases by the square of the
change in distance.
Pitch & Loudness - CORRECT ANSWER - Perceptual correlates of sound properties
based on listener's experience.
20Hz Pitch Difference - CORRECT ANSWER - Easier pitch distinction with two lower
frequencies.
Human Voice - CORRECT ANSWER - Complex wave with multiple frequencies.
Fundamental Frequency - CORRECT ANSWER - Lowest frequency components in a
complex sound.
Loudness of Sound - CORRECT ANSWER - Related to air pressure change, frequency,
and duration.
, Analog Signal - CORRECT ANSWER - Continuous signal in time.
Digital Signal - CORRECT ANSWER - Signal represented by discrete values.
Digital to Analog Conversion - CORRECT ANSWER - Necessary for playing analog
sound waves.
Quantization - CORRECT ANSWER - Assigning digital values to waveform amplitudes.
32-bit System - CORRECT ANSWER - Has over four billion quantization levels.
Aliasing in Digital Recording - CORRECT ANSWER - High frequency wave recorded at
a different frequency.
Nyquist Frequency - CORRECT ANSWER - Half the sample rate, max reproducible
frequency.
Sampling Rate for 20,000 Hz - CORRECT ANSWER - At least 40,000 Hz for accurate
reproduction.
Voice Quality & Stress - CORRECT ANSWER - Muscle movement affects voice quality
under stress.
Jitter in Voice - CORRECT ANSWER - Random cycle-to-cycle changes in vocal fold
movement.
Stroboscopy in Vocal Folds - CORRECT ANSWER - Slow motion simulated by
sequential images across vibratory cycles.
Exam Questions and CORRECT Answers
Air Pressure Changes - CORRECT ANSWER - Alterations in air pressure as sound travels
through air.
Frequency of Sound Wave - CORRECT ANSWER - Number of vibrations of air
molecules per second.
Intensity of Sound - CORRECT ANSWER - Power in watts divided by area.
Amplitude of Sound Wave - CORRECT ANSWER - Height of the sound wave.
Inverse Square Law - CORRECT ANSWER - Intensity decreases by the square of the
change in distance.
Pitch & Loudness - CORRECT ANSWER - Perceptual correlates of sound properties
based on listener's experience.
20Hz Pitch Difference - CORRECT ANSWER - Easier pitch distinction with two lower
frequencies.
Human Voice - CORRECT ANSWER - Complex wave with multiple frequencies.
Fundamental Frequency - CORRECT ANSWER - Lowest frequency components in a
complex sound.
Loudness of Sound - CORRECT ANSWER - Related to air pressure change, frequency,
and duration.
, Analog Signal - CORRECT ANSWER - Continuous signal in time.
Digital Signal - CORRECT ANSWER - Signal represented by discrete values.
Digital to Analog Conversion - CORRECT ANSWER - Necessary for playing analog
sound waves.
Quantization - CORRECT ANSWER - Assigning digital values to waveform amplitudes.
32-bit System - CORRECT ANSWER - Has over four billion quantization levels.
Aliasing in Digital Recording - CORRECT ANSWER - High frequency wave recorded at
a different frequency.
Nyquist Frequency - CORRECT ANSWER - Half the sample rate, max reproducible
frequency.
Sampling Rate for 20,000 Hz - CORRECT ANSWER - At least 40,000 Hz for accurate
reproduction.
Voice Quality & Stress - CORRECT ANSWER - Muscle movement affects voice quality
under stress.
Jitter in Voice - CORRECT ANSWER - Random cycle-to-cycle changes in vocal fold
movement.
Stroboscopy in Vocal Folds - CORRECT ANSWER - Slow motion simulated by
sequential images across vibratory cycles.
