Binaural Hearing and Acoustic Space Flashcards
High frequency sounds are localized by interaural _________ differences, whereas low frequency sounds are localized by interaural __________ differences
Intensity, Time
High frequency sounds _________ diffract around your head, while low frequency sounds _________ diffract around your head
Cannot, Can
Front-back distinctions in sound localization are made possible by the presence and absence, respectively, of reflections off the ridges of the _________
pinnae
The frequency response of the pinna coloration is similar to that of a ________ filter
comb
Why is the frequency response of the pinna is the same as a comb filter?
the reflections off the ridges of the pinnae results in phasing - a cancellation between the direct and reflected sound
The differences in high frequencies reaching each ear are caused by their inability to _________ around the head
diffract
Angular displacement in horizontal localization is called ___________
azimuth
What are kunstkopf recordings?
A type of binaural recording that captures all of the acoustic cues that are used in normal hearing
The HRTF for localization is characterized as having notches around __ and __ kHz
8 and 13
In monophonic mode the main spatial dimension is that of _________, whereas the stereophonic mode adds the dimension of _______
depth, laterality
The main cue of the cocktail party effect is the unique _______ it will emanate from
direction
What is the cocktail party effect
a listener’s ability to focus on a particular sound source in the midst of others
What is the precedence effect
the brain’s ability to suppress later arriving signals and giving precedence to the first arriving sound
Hearing loss may make it more _______ to focus on a particular sound in the presence of noise
difficult
A phantom image is produced when a sound comes from two loudspeakers with equal ________ and the listener is exactly in the middle
amplitudes
