Quiz 8 Flashcards
What model? Pitch is perceived based on maximum excitation along the basilar membrane.
Place
What model? Bundles of auditory nerve fibers fire at the compression phase of a signal, giving the brain a cue for the period of the signal.
Temporal
What model? Based on spectral representation of the stimulus (information contained in the spectrum).
Place
What model? Based on the waveform of the stimulus.
Temporal
low frequency cue
ITD
high frequency cue
ILD
arises due to the head shadow effect
ILD
sound arrives at each ear at a different point in the cycle (different phase)
ITD
Spectral splatter
transient distortion
distortion products are added, what are the harmonics of the original signal
harmonic distortion
amplitude is reduced at certain frequencies based on characteristics of the filter
frequency distortion
What is the “cocktail party effect?” (Cherry, 1953)
ability to attend to a target in the presence of competing noise
what is the better ear effect?
as takes advantage of the fact that one ear has a more favorable SNR
what is binaural squelch?
the as takes advantage of info received from both ears, with different SNR’s
what is the masking level difference
signal threshold is approved when tones to each ear are out of phase
what is echo suppression
copies of the sound in a reverberant room do not interfere with hearing because of this
guitar string after being plucked
free vibration
tuning fork after being hit with a soft mallet
free vibration
ossicles vibrating because of music
forced vibration
table vibrates when the stem of a vibrating tuning fork is placed on it
forced vibration
average dB SPL of a stimulus
RMS amplitude
Measure to avoid spectral splatter
rise/fall time (20 ms)
input level exceeds max output level
harmonic distortion & intermodulation distortion
proportionate change in input and output
linear system
disproportionate change in input and output
nonlinear systems
