The aye-aye ( Daubentonia madagascariensis ) is best known for its unique acoustic-based foraging behavior called ‘tap-scanning’ or ‘percussive foraging’. The tap-scanning is a unique behavior allowing aye-aye to locate small cavities beneath tree bark and extract wood-boring larvae from it. The tap-scanning requires the animal auditory system to have exceptional acoustic near-field sensitivity. This paper has experimentally investigated the effects of external pinna in the acoustic sensing and detection capabilities of aye-ayes. To experimentally evaluate the effects of external ear (pinna) of the aye-aye, the tap-scanning process was simulated using a robotic arm. A pinna was 3D printed using a CT scan obtained from a carcass. The pinna’s effect on the acoustic near-field has been evaluated in time and frequency domains for simulated tap-scanning with the pinna in upright and cupped positions. This idea originates from behavioral observations of the aye-aye using its ears...

中文翻译：

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利用仿生机器人敲击扫描对 aye-ayes 的生物听觉系统进行声学近场测量。

aye-aye ( Daubentonia madagascariensis ) 以其独特的基于声学的觅食行为而闻名，称为“敲击扫描”或“撞击式觅食”。水龙头扫描是一种独特的行为，允许 aye-aye 定位树皮下的小洞并从中提取蛀木幼虫。抽头扫描要求动物听觉系统具有出色的声学近场灵敏度。本文通过实验研究了外部耳廓对 aye-aye 的声学传感和检测能力的影响。为了通过实验评估 aye-aye 的外耳（耳廓）的影响，使用机械臂模拟了轻敲扫描过程。耳廓是使用从尸体上获得的 CT 扫描进行 3D 打印的。耳廓对声学近场的影响已在时域和频域中进行了评估，以模拟耳廓处于直立和杯状位置的抽头扫描。这个想法源于使用耳朵对 aye-aye 的行为观察......