And so, scientists from the National Physical Laboratory in England decided to subject people to infrasound at a concert where infrasound would be played to them underneath regular music.

Infrasound could affect human hearing if very ... it's hard to see how anyone would pull that off without the huge racks of speakers giving the game away. Ultrasound frequencies above 20,000Hz ...

APPLICATIONS: This monitor records infrasound in the 0.05 Hz to 20 Hz band that is generally inaudible to the human ear. Applications include monitoring wind turbines, machinery noise, building ...