Re: Hum in Canada
- My experiences with the hum have always been with the diesel engine
and the pulsating types of sounds, again in many areas I have
--- In email@example.com, Jorge Guinard <aguinardv@...> wrote:
> I went to Ottawa in November 2006 and heard the Hum, Curently I
live in Mississauga, Ontario, and heard the Hum in south Toronto and
diferent places in Mississauga, noticing that in winter 2004.
> I actually recognize 4 types of Hums:
> -One pulsating Very Low- to Medium Low frequency (MMMM-mmmmm-
> with a cycle of 1 1/2 to 2 seconds, the frecuency seems to me
near to 30- 60 HZ (I have some electronics background and recognize
> -A train in Idle or a diesel engine in Idle. (I'm suspecting it
is actually diesel engine from an Oil pipe pumping station some
where) I perceive this like in my inner ear but if I cover it then
the soun level drops significantly.
> -Rumbling very low frec. noise that makes the house walls vibrate
and my body to feel really uncomfortable.
> -Medium High frec. 600hz -650hz aprox. the frequency shifts at
high speed like a fast "tremolo" in that range.
> The one more persistant is the MMMM-mmmm-MMMM-mmmm.
> The others seems to start at 11:00 p.m and have a peak intensity
at 3:00 am.
> All of this described Hums are only indors.
> Does any body have checked for oil pipes/ pumping stations noise?
> Jorge Guinard
> Ph: 416 616 2472
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