Re:A noise two percent of people can hear
by Reason077 on Friday July 19, 2019 @02:04PM
(#20481012)
Active noise cancelling headphones are, in my experience, much more effective at cancelling continuous low-frequency sounds than earplugs which only attempt to block them.
On the other hand, if “the hum” is at frequencies that are normally too low to be heard by most of us, then they may be also too low to be recognised by noise cancellation hardware.
A range of frequencies are given in the Wikipedia link for the phenomenon, in various different cities, and some of them should certainly be within the normal, cancellable range.
On the other hand, if “the hum” is at frequencies that are normally too low to be heard by most of us, then they may be also too low to be recognised by noise cancellation hardware.
A range of frequencies are given in the Wikipedia link for the phenomenon, in various different cities, and some of them should certainly be within the normal, cancellable range.