Resonant frequency of the human body is approx 7Hz. There have been cases in
the past where bad bearings on ventillation / airco fans have generated such
infrasound frequencies, and caused whole office blocks of people to feel
unwell and irritated. You could try looking up " sick building syndrome " or
similar combinations of words. I think this or something like this is the
name that they gave to whole buildings where people never seem to feel well,
and infrasonic vibration is one of the reasons that has been postulated in
the past for this effect .



"Jens Jensen" wrote in message
...

Hello,

apparently there are certain low frequency bass sounds that make people
feel squeezy or irritated. Anyone know, where I might find those on the
net?

Thanks,
Jens