COMD 5070 LATEST 2026 TEST PAPER QUESTIONS AND
SOLUTIONS RATED A+
✔✔a simple, low tech tool for a doctor to view a person's larynx is - ✔✔a laryngeal
mirror
✔✔in vocal modulation, the frequency changes over time are - ✔✔slow and rhythmic
✔✔an electroglottograph reveals details of voicing by: - ✔✔passing a current across the
vocal folds
✔✔the best way to avoid aliasing during a digital recording is to use a - ✔✔low pass
filter
✔✔if it's not harmonic it is - ✔✔noise
✔✔amplitude vary in - ✔✔how big they are
✔✔phase angles vary in - ✔✔where they are at in their cycle relative to one another
✔✔frequencies vary in - ✔✔there are many different ones to choose from
✔✔harmonics are - ✔✔multiples of the fundamental
✔✔each peak in a FFT spectrum is - ✔✔a harmonic
✔✔wavelength is calculated by: - ✔✔the speed of sound is divided by the frequency of
the sound wave. Frequency = speed/wavelength
✔✔what an object is made of affects: - ✔✔the speed of the sound wave
✔✔the length of the object affects: - ✔✔the wavelength of the sound wave
✔✔standing wave - ✔✔certain frequencies of vibration, when reflected back will
produce an interference pattern that appears to stand still, and for that reason the
pattern is called a
✔✔resonance occurs when: - ✔✔one object vibrating at the same resonant or natural
frequency of a second object forces the second object into vibration
✔✔electromyographic (EMG) - ✔✔1.signal from the thyroarytenoid muscle 2. tiny
hooked wire electrodes inserted into the vocal folds 3. reflective of the neuro drive from
the central nervous system
, ✔✔spectral envelope - ✔✔upper border or outline
✔✔continuous spectrum - ✔✔a spectrum that contains energy at all frequencies
✔✔another name for line spectrum: - ✔✔power spectrum
✔✔line spectrum - ✔✔aka power spectrum the energy at each frequency is represented
by a vertical line, the height of which corresponds to the relative amount of energy
✔✔another name for frequency domain is: - ✔✔a spectrogram
✔✔power spectrum - ✔✔aka line spectrum 1. a plot of the power (energy per unit of
time) of given frequencies of the sound 2. is a 'snap shot' of the energy of each
frequency component of the pressure wave
✔✔fundamental frequency (F0 or Fo) - ✔✔1. represents the repetition frequency of the
complex pattern 2. is the lowest frequency of a complex periodic tone 3. the frequency
of the complex wave is equal to the frequency of the lowest (frequency) component sine
wave.
✔✔the formula to convert a frequency range to a semitone range: - ✔✔difference in
semitones between 2 frequencies = 39.86 x log 10 (F higher/ F lower)
✔✔4 Features of the scientific method - ✔✔1. Empirical - based on data 2. Deterministic
- obeys physical laws (not random) 3. Predictive - if you do this ... then that will happen
4. Parsimonious - use the simplest explanation possible
✔✔Why do SLP's use technology? - ✔✔1. overcome listener bias 2. consistent, reliable
measure 3. describe severity objectively 4. track progress 5. ASHA's focus on EBP 6.
provide biofeedback to client 7. SLP need to know normal and disordered physiology 8.
Need to know what the numbers represent
✔✔Pitch perception - ✔✔order on a musical scale, subjective perception, can NOT be
measured with instruments, listener matches perceived pitch to that of a pure tone.
✔✔Loudness perception - ✔✔a perceptual characteristic judged by a listener, can NOT
be measured by equipment, psychophysical scale links loudness to intensity
✔✔Intensity - ✔✔is measured in dB and intensity = amplitude
✔✔IL - ✔✔Intensity Level
✔✔SPL - ✔✔Sound Pressure Level
SOLUTIONS RATED A+
✔✔a simple, low tech tool for a doctor to view a person's larynx is - ✔✔a laryngeal
mirror
✔✔in vocal modulation, the frequency changes over time are - ✔✔slow and rhythmic
✔✔an electroglottograph reveals details of voicing by: - ✔✔passing a current across the
vocal folds
✔✔the best way to avoid aliasing during a digital recording is to use a - ✔✔low pass
filter
✔✔if it's not harmonic it is - ✔✔noise
✔✔amplitude vary in - ✔✔how big they are
✔✔phase angles vary in - ✔✔where they are at in their cycle relative to one another
✔✔frequencies vary in - ✔✔there are many different ones to choose from
✔✔harmonics are - ✔✔multiples of the fundamental
✔✔each peak in a FFT spectrum is - ✔✔a harmonic
✔✔wavelength is calculated by: - ✔✔the speed of sound is divided by the frequency of
the sound wave. Frequency = speed/wavelength
✔✔what an object is made of affects: - ✔✔the speed of the sound wave
✔✔the length of the object affects: - ✔✔the wavelength of the sound wave
✔✔standing wave - ✔✔certain frequencies of vibration, when reflected back will
produce an interference pattern that appears to stand still, and for that reason the
pattern is called a
✔✔resonance occurs when: - ✔✔one object vibrating at the same resonant or natural
frequency of a second object forces the second object into vibration
✔✔electromyographic (EMG) - ✔✔1.signal from the thyroarytenoid muscle 2. tiny
hooked wire electrodes inserted into the vocal folds 3. reflective of the neuro drive from
the central nervous system
, ✔✔spectral envelope - ✔✔upper border or outline
✔✔continuous spectrum - ✔✔a spectrum that contains energy at all frequencies
✔✔another name for line spectrum: - ✔✔power spectrum
✔✔line spectrum - ✔✔aka power spectrum the energy at each frequency is represented
by a vertical line, the height of which corresponds to the relative amount of energy
✔✔another name for frequency domain is: - ✔✔a spectrogram
✔✔power spectrum - ✔✔aka line spectrum 1. a plot of the power (energy per unit of
time) of given frequencies of the sound 2. is a 'snap shot' of the energy of each
frequency component of the pressure wave
✔✔fundamental frequency (F0 or Fo) - ✔✔1. represents the repetition frequency of the
complex pattern 2. is the lowest frequency of a complex periodic tone 3. the frequency
of the complex wave is equal to the frequency of the lowest (frequency) component sine
wave.
✔✔the formula to convert a frequency range to a semitone range: - ✔✔difference in
semitones between 2 frequencies = 39.86 x log 10 (F higher/ F lower)
✔✔4 Features of the scientific method - ✔✔1. Empirical - based on data 2. Deterministic
- obeys physical laws (not random) 3. Predictive - if you do this ... then that will happen
4. Parsimonious - use the simplest explanation possible
✔✔Why do SLP's use technology? - ✔✔1. overcome listener bias 2. consistent, reliable
measure 3. describe severity objectively 4. track progress 5. ASHA's focus on EBP 6.
provide biofeedback to client 7. SLP need to know normal and disordered physiology 8.
Need to know what the numbers represent
✔✔Pitch perception - ✔✔order on a musical scale, subjective perception, can NOT be
measured with instruments, listener matches perceived pitch to that of a pure tone.
✔✔Loudness perception - ✔✔a perceptual characteristic judged by a listener, can NOT
be measured by equipment, psychophysical scale links loudness to intensity
✔✔Intensity - ✔✔is measured in dB and intensity = amplitude
✔✔IL - ✔✔Intensity Level
✔✔SPL - ✔✔Sound Pressure Level
