Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Two Difficult Problems for the Auditory SystemDetermining source location:The sound waveforms at the ears are one dimensional, making estimation of the direction and distance of the source very difficult. Performing source separation: Sounds from a given source often appear in a complex and varying context of other sources, making separation and recognition of sound sources difficult.Source Location and SeparationTwo Theories of Pitch PerceptionPlace (or Pattern Recognition) TheoryTemporal Theory(periodicity pitch demo)(demo noise