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COMD 5070 Exam 1/165 Questions and Answers (A+ Rated)

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COMD 5070 Exam 1/165 Questions and Answers (A+ Rated)

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  • August 16, 2024
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  • 2024/2025
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COMD 5070 Exam 1/165 Questions
and Answers (A+ Rated)
Scientific Method - -empirical, deterministic, predictive, parsimonious

-empirical - -based on data

-deterministic - -obeys physical laws

-predictive - -If you do this, then this will happen

-parsiminious - -uses the simplest explanation possible

-why use technology? - -overcome listener bias, describe severity
objectively, track progress over time, ASHA's focus on evidence-based
practice, provide biofeedback to patient

-how to overcome listener bias? - -consistent, reliable measurements

-how to track progress over time? - -demonstrate treatment efficacy

-biofeedback example - -vizipitch- allows client to view intonation patterns
on a screen so they can see & monitor their own progress

-things clinicians can do that technology can't - -understand the numbers,
examine qualitatively and quantitatively, judgments/ interpreting data

-why understand technology? - -SLP needs to know normal & disordered
physiology; can only provide rational treatment if data is understood; need
to know what numbers from instruments represent; provide expert
interpretation

-3 key arenas of Speech Science - -acoustic phonetics, physiologic
phonetics, speech perception

-physiologic phonetics - -kinematics, aerodynamics, electromyography

-frequency - -how often a waveform repeats; measured in Hz

-simplest sounds - -pure tones

-complex tones - -have more than 1 sine wave (more than 1 sound being
produced together, & they blend); have many frequencies; F0 = strongest;

, perceived pitch follows fundamental; human voice has F0 and harmonics;
auditory system responds to all frequencies

-pitch perception - -linked to frequency; order on a musical scale; subjective
perception; can't be measured w/ instruments; listener matches perceived
pitch to that of a pure tone of a known frequency

-Frequency Difference Limens (DL) - -smallest detectable change in
frequency; DLs increase w/ stimulus frequency; high frequency sounds must
differ more to be heard as different in pitch; as intensity increases, DLs
become larger

-Intensity of speech - -measured in dB SPL

-dB SPL = - -20 (log10 PO/PR)

-periodic relationship - -if frequencies in a complex tone are in a
mathematical relationship to one another such that the harmonics are
multiples of the fundamental; if not periodic, sounds jarring/ discordant

-missing fundamental - -listen to a harmonic series; actual fundamental can
be absent; timbre/ quality is different; pitch is still perceived as the same;
brain processes harmonic structure & fills gap by calculation/ interpolation;
cheap audio equipment- stimulated bass; AKA "residue pitch"

-pitch perception in music - -A or B sounds equivalent up or down; some
note pairs blend harmoniously, some are dissonant; harmonic frequencies
match or don't

-octave - -doubling/ halving of frequency

-Intensity - -measured with a sound level meter; power per unit area

-intensity formula - -watts/meter squared

-loudness - -a perceptual characteristic; judged by listener (not right or
wrong); linked to intensity by psychophysical scale

-magnitude rating - -the process of plotting psychological perceptions of
intensity

-recruitment - -an abnormal growth in loudness

-effect of frequency on loudness - -hearing more sensitive at some
frequencies (lowest thresholds from 1000-5000 Hz); thresholds increase for

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