Discrimination of frequency transitions: or, can you distinguish the different birds chirping by the waterfall?
Jane F. MacNeil, Elzbieta B. Slawinski · Canadian acoustics · 1993
One method which has become increasingly popular to study complex phenomena such as speech perception is the use of non-speech analogs (eg. frequency transitions). The discrimination of frequency transitions was examined as a function of frequency region, trajectory direction, and presence of background noise