The Parabolic Ear

The Parabolic Ear

When using our ears, clear sounds are usually heard between the frequencies of 1,000Hz – 5,000Hz, although we are able to hear between the ranges of 20Hz to 20,000Hz. The parabolic ear amplifies the sounds in the room so that you can hear noises that you cannot hear with your ear alone.

Investigators use this device to widen the frequency range that can be heard and use it to identify possible communication in many forms, such as whispers, bangs, taps and whistles.