The infrasound - magnetic field connection

Infrasound has also been implicated in giving people ghostly hallucinatory experiences. Infrasound is sound at too low a frequency for people to hear (generally below 20 Hz). Interestingly, infrasound shares a frequency range with EIFs. In addition, some potential sources of EIFs could also produce infrasound. In particular, moving HMPs could, potentially, produce infrasound at the same time and at the same frequency as EIFs. It is therefore important to check for EIFs if you find strong infrasound sources in a haunted location. The laboratory evidence for infrasound producing ghostly hallucinations is as clear-cut as that for EIFs. Therefore, to establish a case for infrasound can alone produce ghostly experienc.