PBS 4 Audition

jessgrimmel's version from 2017-05-24 10:24


Question Answer
Fletcher (1940)Masking experiment - detect pure tone against background noise which has been band-pass filtered. As band-pass width increased, performance on the task decreased until you reached a 'critical band' where additional frequencies no longer had any effect. Allows you to estimate the width of the filter.
Vogel (1974)Psychophysical tuning curves using masking experiment - target single filter channel with band-pass filtered masking noise (small range) - measure when masking effect kicks in for low tone. Try for several frequencies surrounding the tone to measure the filters in individual ears.
Von Bekesey Post mortem cochlea - movement of the BM
Wever and BrayVolley principle - aggregation makes the temporal code of phase locking useful
Moore (1973) Discriminating between two tones becomes difficult after 5kHz (when temporal information not avaliable)
Attneave and Olson (1971)Identifying melody in a sequence of pure tones is poor after 4kHz (temporal code required to detect musical intervals)
Lord Rayleigh "Speed of sound is constant - different arrival times for sounds coming from different areas in space" - tuning fork experiment
Lord RayleighDuplex theory - IIDs and ITDs
Mills (1958) How little can you move the speaker before listener knows the sound is coming from a different location? Depends on frequency - the use of both mechanisms. Gap between 1,500 Hz.
Jeffress modelCoincidence detection - similar wiring has been found in the medial superior olive (ITDs)
Gardener and Gardener Localisation worse when Pinna filled - importance of HRTF
Seukeuler et al.Bouncing ball - auditory signal can change visual perception
Shams et al.1 beep / 2 beeps - see more flashes
Ventriloquist effect / CinemaWe look for a source within the visual world
McGurk effectCombined signals
Alias and Burr (2004)Judge position in regards to reference either from spots of light / ITDs - vision was more reliable, when presented together, made judgements based on vision. When vision was blurred (less reliable) made judgements based on sound.
Ernst and Banks (2002)Judge size of a telephone directory - haptics / vision - when reduced weight of vision by affecting depth cues, then haptics took more weight.
Bayes' TheoryIncorporating past knowledge