Discrimination factor of all 14 participants for each studied pairwise comparison at the two considered distances (0.81 and 5.03m) and for all three RDLD configurations

Discrimination accuracy of each pairwise comparison between textures studied at two distances within the context of a study about human echocolation. This dataset was acquired using a 2 Alternative Forced Choice (2AFC) method known as ABX-type listening test and performed on 14 novice sighted participants with 3 repetitions per case.The textures are respectively, a flat wall, a circular wall, a parabolic wall, a crenelated wall, a wall with aperture and a staircase. The two investigated distances of these textures are 0.81m and 5.03 m with respect to the echolocator.These comparisons were made under 3 different conditions:1°) With a normal echo trace, i.e. no modification applied to an echolocation task2°) With an increased RDLD, i.e. an amplification of the reflections magnitude, by 6dB.3°) Only considering the reflection components of the BRIRs after equalizing their loudness using the Boullet's model of loudness for impulsive stimuli.