.png){kind=logo}
COMD 5070 Exam 1 ( 2026/2027 Update) Acoustics of Speech and Hearing Questions and Answers
COMD 5070 Exam 1 ( 2026/2027
Update) Acoustics of Speech and Hearing
Questions and Answers
Correct
Q: What is the difference between pitch perception and frequency measurement?
Answer:
pitch is subjective to the listener
frequency is objective and can be measured
Q: How do waveforms differ as frequency goes up or down?
Answer:
higher frequency wavelengths appear closer together with more frequency over a period of time
than lower frequencies
Q: What is the difference between loudness perception and intensity measurement?
Answer:
Loudness is subjective and cannot be measured
Intensity is objective and can be measured by equipment
Q: What are the units of measurement for intensity?
Answer:
HL
SPL
Q: What is difference limens?
Answer:
the smallest detectable change (DL)
Q: What is the difference limens for frequency?
Answer:
DLs become larger as the frequency decreases
Q: What is the difference limens for intensity?
Answer:
DLs become larger as the intensity decreases
Q: How does a complex periodic sound change when the fundamental is removed or muted?
Answer:
when removed, the timbre (quality) differs, but the pitch is perceived as the same
Q: How many semitones are in one octave?
Answer:
12
Q: What is a voice range profile (VPR)?
Answer:
a visual representation of a person's the amplitude and fundamental frequency range
Q: How is the VRP computed and what does it show?
Answer:
x-axis represents the fundamental frequency range
y-axis represents the amplitude
Q: What is the root mean square amplitude?
Answer:
refers to the square root of the mean of the squares of the value
Q: What is the inverse square law?
Answer:
it states that intensity is inversely proportional to the square of the distance from the source
Q: How does intensity change with distance?
Answer:
intensity decreases the farther it is from the source of the sound as the sound is spread out over
more space
Q: What is the relationship of subglottic pressure to speech intensity?
Answer:
subglottal pressure drives speech; more driving pressure is needed for louder speech
.png)