Sensation and Perception Exam 3
Questions And Answers 2026 Update!!!
Physical definition of sound sound is pressure changes
Perceptual definition of sound the experience we have when we hear
number of cycles (sound waves peaking) per
Frequency
second
Frequency is measured in… Hertz (Hz)
Sound amplitude height of peaks in a wave
Sound amplitude is measured in… decibels
3 perceptual aspects of sound pitch, loudness, and timbre
Pitch perceived from frequency (high or low)
Human hearing ranges from… 20-20,000 Hz
perceived from sound amplitude (size of sound
Loudness
wave)
other perceptual aspects of sound beyond
Timbre loudness, pitch, and duration (ex. different
musical instruments)
absolute threshold (minimum) and magnitude
2 thresholds for loudness
estimation
Thresholds depend on… loudness and frequency
curve that shows the sound pressure level (SPL)
Audibility curve at threshold for frequencies across the audible
spectrum
Two places frequency is represented in auditory
The cochlea and auditory cortex (A1)
pathway…
, which hair cells are activated corresponds to
Frequency in cochlea
frequency of sound (place theory)
Hair cells near base of cochlea high frequencies
Questions And Answers 2026 Update!!!
Physical definition of sound sound is pressure changes
Perceptual definition of sound the experience we have when we hear
number of cycles (sound waves peaking) per
Frequency
second
Frequency is measured in… Hertz (Hz)
Sound amplitude height of peaks in a wave
Sound amplitude is measured in… decibels
3 perceptual aspects of sound pitch, loudness, and timbre
Pitch perceived from frequency (high or low)
Human hearing ranges from… 20-20,000 Hz
perceived from sound amplitude (size of sound
Loudness
wave)
other perceptual aspects of sound beyond
Timbre loudness, pitch, and duration (ex. different
musical instruments)
absolute threshold (minimum) and magnitude
2 thresholds for loudness
estimation
Thresholds depend on… loudness and frequency
curve that shows the sound pressure level (SPL)
Audibility curve at threshold for frequencies across the audible
spectrum
Two places frequency is represented in auditory
The cochlea and auditory cortex (A1)
pathway…
, which hair cells are activated corresponds to
Frequency in cochlea
frequency of sound (place theory)
Hair cells near base of cochlea high frequencies
