Object, Instrument, Technology

The parabolic microphone uses a parabolic reflector to collect and focus sound waves onto a receiver, ensuring great directional sensitivity along the axis to which the reflector is directed. The microphone found initial application in sports and theater broadcasting, and later in eavesdropping and espionage during World War II. It also became a key instrument in the recording of animal vocalizations, and as such provided an important stimulus to the field of biological acoustics.