Table 1.

Summary of the conditions in which each auditory distance cue can be used. For each condition, a checkmark (√) indicates that the cue is available and can be used, a cross (x) indicates that the cue is not useful, and a question mark (?) indicates that the answer is currently unknown or unclear (see main text for further details). Frontal and lateral sources refer to sound position relative to the listener

Condition	Auditory distance cue
	Level	DRR	Spectral cues	Binaural cues	Dynamic cues
Anechoic environment	√	x	√	√	√
Reverberant environment	√	√	√	?	?
Absolute distance judgements	x	√	x	√	√
Relative distance judgements	√	√	√	√	?
Frontal sources	√	√	√	?	√
Lateral sources	√	√	√	√	√
Peripersonal space	√	√	√	√	x
Extrapersonal space	√	√	√(>15 m)	x	√