The RedVox Infrasound Recorder captures sub-aural low frequency sound from volcanic eruptions, sonic booms, meteors, earthquakes, tsunamis, surf, and anything big that blows up. Be part of the world-wide infrasound exploration! Recording and streaming over wifi or cell starts as soon as you hit play. The main display shows the infrasonic pressure recorded with the internal microphone and (if available) barometer. Microphones plugged in through the data port or audio jack will override the int