Auditory Perception of Spatial Extent in the Horizontal and Vertical Plane

Marian Weger

12.12.2014 - 29.02.2016

wissenschaftliche Masterarbeit

Ressourcen:

Masterarbeit

Auditory Perception of Spatial Extent in the Horizontal and Vertical Plane

This thesis explores how current algorithms can be used to create perceived spatial extent of a magnitude relevant for auditory displays such as deictic interactions with sound, navigation, or spatialized audio graphs. Perceived spatial extent of horizontally and vertically distributed sound sources has been measured as a function of algorithm, stimulus type, and spatial distribution of individual loudspeakers in order to reach conclusions on its potential for integration in human computer interaction design tools. Results are promising as the distributions of perceived horizontal extent judgments varied systematically with physical extent for both laboratory and other signals based on granular synthesis. The time-based synthesis algorithm resulted in significantly larger judgments of spatial extent irrespective of orientation, compared to a state-of-the-art frequency-based technique. Perception of vertical extent was not accurate and varied less systematically with actual extent, while judgments largely underestimated the actual vertical extent of sound sources. Horizontally extended sound sources may be readily applied in interaction design.