InfraSound Detector is the App that allows you to detect infrasound (infrasonic) acoustic signals below the user-defined frequency (up to 30 Hz by default). Infrasound propagates hundreds of miles and can penetrate walls, mountains and other obstacles without loss. This detector can be useful in following cases: To find out any suspicious low frequency noise, vibrations, and sounds in building structures. To register a number of hazardous atmospheric phenomena, including aircraft wake vorti