Design and characterizations of a multi–sound receiver using fly Ormia ochracea's ears–inspired MEMS directional microphone array

Fly Ormia ochracea ears–inspired MEMS directional microphones show directionality at a reduced size. The progress within this area is limited to prototype development and feasibility studies, which leaves a limited choice of using it in practical applications. Here, we presented how this trend of directional microphones reacts to multiple incoming sound sources and what we can hear after converting the sensing sound. A multi-sound receiver is developed that receives multiple incoming sounds, and an analog logic is added to differentiate them. When the intensity, frequency, and propagation angle are unknown, the developed device is evaluated in an anechoic chamber using numerous sound sources. The results are promising and enable the advances of using fly Ormia ochracea's ears-inspired MEMS directional microphone in various acoustic applications.