BCS 151 Lecture Notes - Lecture 18: The Cocktail Party, Stimulus Modality, Mcgurk Effect
11 Nov 2016
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Localization is hard for sounds because all sounds go the same place. You don"t get separate sounds, you get the combo. Somehow we are able to unpack and delegate sounds to a particular source: the cocktail party effect". If you know the location of speakers, you can localize the sound to easily unpack the information: one location tends to move continuously. Segmentation can be heightened by focusing on timbre and pitch: e. g. men vs women"s voices, everyone"s voice is different. You group together similar together: link to gestalt"s grouping principles of vision, deutsch experiment. More focused on the pitch than location. Sounds can change location but a person cannot change their pitch (voice: filling in the gaps. Speech interrupted by noise is easier to comprehend than speech interrupted by silence. Your brain bridges the gap: temporal proximity. When things occur together in time, there are grouped together. Played quickly: basically the same: effects of past experience.
