Table 2.

Characteristics of Noise Environments Used in Perceptual Evaluation.

#	Abbreviation	Name	Signal characteristics	Spatial characteristics	Rating	Stationarity
1	20T	20-talker babble	Speech (male, five different talkers each used four times)	Omnidirectional (originating at five distinct positions)	Artificial	Quasi-stationary
2	CAN	Cafeteria ambient noise	Speech (male, female), cutlery and dishes	Omnidirectional (with directional components)	Highly realistic	Quasi-stationary with fluctuating components
3	SCT	Single competing talker	Speech (male, one talker)	Directional (interferer originating at 90° right)	Realistic	Highly fluctuating

Note. See Baumgärtel et al. (2015) for further details.