COMD 5070 Exam 1 (Latest 2026/2027 Update) Acoustics of Speech and Hearing| Questions and Verified Answers| 100% Correct| Grade A

COMD 5070 Exam 1 (Latest 2026/2027 Update) Acoustics of Speech and Hearing| Questions and Verified Answers| 100% Correct| Grade A

COMD 5070 Exam 1 (Latest 2026/2027

Update) Acoustics of Speech and Hearing|

Questions and Verified Answers| 100%

Correct| Grade A

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