Soundscape Characterization Tool
This app can be used to gather/characterize soundscapes and is based on a research method made by Per Hedfors, Division of Landscape architecture, Dept. Urban and Rural Development, Swedish University of Agricultural Sciences (SLU) Uppsala.
Link to manual:
http://www.slu.se/Global/externwebben/nl-fak/stad-och-land/la/dok/sct_manual_en.pdf