"...The cyborg cockroaches, or biobots, are the brainchild of researchers at North Carolina State University.
The quarter-sized pack placed onto the back of a cockroach is equipped with microphones to pick up high-resolution sound.
One version of the pack has one microphone to pick up sound from any direction, which is wirelessly transmitted.
A second version of the pack has an arrangement of three-directional microphones to identify the direction of a sound. ..."