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COMD 5070 Exam 1 All Answers Correct

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COMD 5070 Exam 1 All Answers Correct 4 features of scientific method ️-empirical (based on data) -parsimonious (easiest explanation) -predictive (if you do this, this happens) -deterministic (not random, obeys physical laws) 5 reasons SLPs use technology ️-overcome listener bias (consistent...

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  • August 15, 2024
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COMD 5070 Exam 1 All Answers Correct
4 features of scientific method ✔️-empirical (based on data)

-parsimonious (easiest explanation)

-predictive (if you do this, this happens)

-deterministic (not random, obeys physical laws)



5 reasons SLPs use technology ✔️-overcome listener bias (consistent, reliable measurement)

-describe severity of speech using subjective terms & measure

-track progress over time

-EBP

-provide biofeedback



how does acoustics help SLPs? ✔️tells us how the larynx is operating or how articulators are moving by
reading speech production through microphone readings



pitch perception ✔️-linked to frequency

-subjective

-higher frequency is perceived as higher pitch



frequency ✔️-how frequently a wave form repeats

-simplest sounds are pure tones (sine waves)

-the higher the frequency, the more complete cycles per second



intensity ✔️-the amplitude or size of the sound

-measured by sound level meter in dB on a logarithmic scale or IL/SPL on a linear scale



loudness ✔️-perceptual; human response to the amplitude of sound

-cannot be measured

, -the greater the intensity the greater we perceive the loudness to be

-generally a 6-10 dB increase is perceived as twice as loud

-perception cannot be wrong; no objective way to measure



T/F

duration affects our perception of how loud a sound is ✔️True

a longer sound is more audible



frequency difference limens ✔️-the smallest detectable change in frequency



DL ____ with stimulus frequency ✔️-increases

-higher frequency tones must differ more to be heard as different in pitch



as intensity ____, the DL becomes larger ✔️decreases; if sounds are soft it is harder to tell them apart
(in pitch) if they are close in frequency, so higher frequency sounds much differ more to be heard as
different in pitch



how does a complex periodic sound change when the fundamental is removed? (missing fundamental)
✔️-the timbre/quality is different but the pitch can be perceived as the same because the brain
processes harmonic structure by filling in the gap using calculation/interpolation

-aka residue pitch



semitones ✔️-12 in one octave

-each semitone is a nonlinear step in frequency (each step bigger than the last, no two semitones are
identical in the # of Hz you need to get from one to the next)



voice range profile ✔️-measure the dynamic range (the dB range across a person's Fo range)

-represents the overall capacity of a person's voice



how to measure a VRP ✔️-find the min & max intensity point at each pitch

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