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COMD 5070 - Final Exam with 100% complete solution
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COMD 5070 - Final Exam with 100% complete solution
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COMD 5070 - Final Exam with 100%complete solution
What are the four features of the scientific method? - ANS empirical
deterministic
predictive
parsimonious
What does empirical mean? - ANS based on data
What does deterministic mean? - ANS obey physical laws
What does predictive mean? - ANS show what will happen
What does parsimonious mean? - ANS use the simplest explanation possible
Why do SLPs use technology in clinical practices? - ANS to overcome listener bias
to describe severity objectively
to demonstrate treatment efficacy (track progress)
to provide biofeedback
What is the difference between pitch perception and frequency measurement? - ANS pitch
is subjective to the listener
frequency is objective and can be measured
How do waveforms differ as frequency goes up or down? - ANS higher frequency
wavelengths appear closer together with more frequency over a period of time than lower
frequencies
What is the difference between loudness perception and intensity measurement? - ANS
Loudness is subjective and cannot be measured
Intensity is objective and can be measured by equipment
What are the units of measurement for intensity? - ANS HL
SPL
What is difference limens? - ANS the smallest detectable change (DL)
What is the difference limens for frequency? - ANS DLs become larger as the frequency
decreases
, What is the difference limens for intensity? - ANS DLs become larger as the intensity
decreases
How does a complex periodic sound change when the fundamental is removed or muted? -
ANS when removed, the timbre (quality) differs, but the pitch is perceived as the same
How many semitones are in one octave? - ANS 12
What is a voice range profile (VPR)? - ANS a visual representation of a person's the
amplitude and fundamental frequency range
How is the VRP computed and what does it show? - ANS x-axis represents the
fundamental frequency range
y-axis represents the amplitude
What is the root mean square amplitude? - ANS refers to the square root of the mean of the
squares of the value
What is the inverse square law? - ANS it states that intensity is inversely proportional to the
square of the distance from the source
How does intensity change with distance? - ANS intensity decreases the farther it is from
the source of the sound as the sound is spread out over more space
What is the relationship of subglottic pressure to speech intensity? - ANS subglottal
pressure drives speech; more driving pressure is needed for louder speech
How is loud speech different from conversational speech? - ANS Loud speech requires
more forceful vocal fold collisions and higher oral pressure
What is the difference between digital and analog signals? - ANS Analog signal are
continuous in time and amplitude without gaps
What makes digital signals different from analog signals? - ANS Digital signals are discrete
in time and amplitude and the numbers represent snapshots in time
How does sampling rate relate to playback quality, file size, frequencies saved in recording? -
ANS The higher the sampling rate, the bigger file size is needed and the higher quality you will
have
What is the Nyquist frequency? - ANS half the sample rate and is the highest frequency you
can reproduce
What is quantization? - ANS a number that reflects signal amplitude
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