Anomalyuneven thrumming 40-45hz Tried an FFT analyzer on my iPad & iPhone, both seem very poor at low Freq. Tested by placing iPad on digital piano and keys played in lowest registers almost didn't show up on FFT at all, but still the FFT programs show highest dB in lowest freq ranges. Makes me think there is a lot of LF noise that is just "background". Have some home music audio gear (large diaphragm condenser mic, etc.), would like recommendation for how use to isolate & identify this noise.
94065 · 2019-04-28 · from the WORLDHUMMAP archive
An account in 94065
What they reported
First noticed: 2017
Pitch: 40-45hz
Loudest: Equal night and day
Where: Indoors
Symptoms: Insomnia, Sense of vibration, Annoyance
Changes with weather: not that I've noticed
Keep reading
There are thousands more like this in the record. Open one at random, or read the ones the most people recognise.
Read anotherMost recognisedOr if something like this happened to you, write it down and we will look for the others who saw it too.
Know someone this happened to?
If this reminds you of something a friend or a relative told you once and never mentioned again, send them this page. Reading that a stranger described the same thing is usually the part that helps.
Nothing is tracked back to you and nothing is sent on your behalf. The link is just the page you are reading.
This is a Hum report from Dr Glen MacPherson's World Hum Map, an open, worldwide record of people who hear an unexplained low-frequency hum. Reproduced with permission and with thanks; the project is at thehum.info. We remove anything on request. Location shown is approximate.