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Pokorny, FB; Fiser, M; Graf, F; Marschik, PB; Schuller, BW.
Sound and the City: Current Perspectives on Acoustic Geo-Sensing in Urban Environment
ACTA ACUST UNITED AC. 2019; 105(5): 766-778.
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Autor/innen der Med Uni Graz:
Marschik Peter
Pokorny Florian
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Abstract:
Acoustic geo-sensing deals with the derivation of spatial information from audio data. Motivated by the rising field of sensing information in (smart) cities, we present current perspectives and a methodological update on the acoustic-based solution of recognition problems in a complex urban real-world scenario. In particular, we examine a static and a sequential approach for the automatic recognition of a cyclist's route between fixed endpoints, the route direction, and the route progress, solely based on the audio data recorded with a cell-phone attached to the cyclist. To this end, we introduce the freely available 'Graz Cell-phone Cycle Corpus extended' (GC(+)(3)) that consists of more than 25 h of GPS-annotated audio material recorded in the southern urban area of the city of Graz, Austria. Promising recognition results confirm basic feasibility of acoustic geo-sensing in an urban environment. The approach's theoretical potential of being generalised to support the solution of position tracking problems on a multi-dimensional urban grid gives reason for the implementation of acoustic geo-sensing methodology in a number of real-world applications.

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