Well, I found another source of the Hum. It is the tenant downstairs, he needs a new electric fan for his toilet. This house was built in 1973. Switching off...
Greetings to all! I'm new to this forum and am relieved to know I am not going crazy. For about three years I have been experiencing the hum in my stone-built,...
Now I'm 59. When I was a child, I heard from elderlies (now dead people) two legends. 1) Sometimes it was hearable a weak distant lament coming from the lands....
The usual disclaimer: this may or may not be hum related. Have any of you checked the PSI of your waterline? You may find that it's high. If so, please report....
Each year in the spring I start getting mosquitoes, moths, and very small flies in my top-floor apartment. The problem gets very acute during the summers. So...
Leah Ryan
leahryan@...
May 3, 2008 7:00 pm
10140
How would I check that? (and what does PSI stand for?) Thanks, Maureen in BC...
Thank you Antonio for all of your analytical insight. Sometimes I hear more than one tone, like another slightly higher tone is modulating the lower tone. This...
... Hi Maureen, PSI = I believe pounds per square inch. Not sure if this applies to you in BC, but I bought a water gauge at the hardware store, and per the...
... Nice that someone found a source. Yeah, not so lucky here, either. The water pressure angle is more about mitigating potential sources of annoyance than...
If you want to explore this angle, it's easy. Drop a hydrophone into the tank behind your toilet and record it overnight. Cheap hydrophones are VERY cheap -...
Folks I live in Pittsburgh, Pa. The hum started for me almost exactly 4 years ago. It seems to take a summer break--ending somewhere around the beginning of...
Hi, do you hear a low tone only (distant diesel engine) or higher tones too? Is your tone continuous, or even pulsating (like morse code)? Thanks, Antonio,...
Please excuse me, Eleonor, I don't usually check the group-related mailbox (I selected not to have the group messages reflected there). Indeed your message is...
... For about three years....... Hi Dianeantone I am sorry to say but you definately have the classic HUM. By saying you hear it indoors and not outdoors, the...
I've found that - if I position myself in such a place in my home where I can the hum and also simultaneously hear a similar-intensity spoken voice from...
Dear Tom, thanks for introducing the concept of Automatic Gain Control in the hum perception mechanism. An AGC-like mechanism could actually be at work in our...
... higher frequency... Yes. The accelerometers are not terribly sensitive (~15mg) but they can respond to 240Hz and below, fast enough, I suspect. I'll try...
Hi Colin, Thanks for your reply to my post. Good to know I'm not alone! As to ears, I don't think it's either one particularly and it almost feels like it...
... [] ... they can ... see ... Tom, a rough calculation shows that the sensitivity of your accelerometers is too far from that needed for such a test. You...
... Thanks, Rossen. Where do you describe how you measured otoacoustic emissions from your own ear? Were you able to record that sound? Tom Cape Coral...
... noise) is in the order of 1 microGal or less, that is at least 6 orders... Interesting. What bandpass? Gravity is largely treated as if it is essentially...
... wrote:> Hi Colin, ... ears, > Why do you think it starts when we become middle-aged? That makes it sound rather as if it is suspected to be a form of ...
... Eleanor, the accelerometers are actually capacitive devices, similar to many modern MEMS sensors. This is one, an Analog Devices ADXL203 that can resolve...
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