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. <br><br>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.<br><br>The textures are respectively, a flat wall, a circular wall, a parabolic wall, a crenelated wall, a wall with aperture and a staircase. <br><br>The two investigated distances of these textures are 0.81m and 5.03 m with respect to the echolocator.<br>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.<br>

本数据集源自一项关于人类回声定位（human echolocation）的研究，记录了在两种测试距离下，各类纹理墙面两两对比的识别准确率。

本数据集采用被称为ABX型听觉测试的二择一迫选（2 Alternative Forced Choice, 2AFC）范式采集得到，共招募14名未接受过训练的视力正常受试者，每个实验条件重复测试3次。

本次实验涉及的纹理墙面共6类，分别为平面墙、圆弧墙、抛物面墙、锯齿墙、带开孔墙面以及楼梯墙面。

针对上述纹理墙面，本次实验设置了距回声定位者0.81米与5.03米两种测试距离。

本次对比实验共设置3种不同测试条件：
1） 正常回声轨迹条件：即未对回声定位任务施加任何修改的原始测试状态；
2） 增强反射响度差异（RDLD）条件：即将反射声幅值放大6dB；
3） 仅保留使用Boullet脉冲刺激响度模型对双耳房间脉冲响应（Binaural Room Impulse Responses, BRIRs）进行响度均衡后的反射分量。