Editing Talk:1590: The Source

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This is exactly what happened to my Samsung monitor before it died. I was going to bed one night and this high-pitched noise was driving me insane. I turned my PC on, only for the monitor to go black. The problem with these high-pitched noises is that they're hard to locate. -[[Special:Contributions/162.158.90.191|162.158.90.191]] 22:04, 26 October 2015 (UTC)
 
This is exactly what happened to my Samsung monitor before it died. I was going to bed one night and this high-pitched noise was driving me insane. I turned my PC on, only for the monitor to go black. The problem with these high-pitched noises is that they're hard to locate. -[[Special:Contributions/162.158.90.191|162.158.90.191]] 22:04, 26 October 2015 (UTC)
 
For those of us of a certain age, there was a very specific high-pitched sound in almost everyone's daily environment: the horizontal line rate (sometimes called retrace frequency) of analog televisions.  For the U.S. NTSC system, this was about 15.7 kHz (PAL: 15.6 kHz).  Televisions almost inevitably produced this sound because the "flyback" transformer which produced the voltage used to steer the electron beam back and forth underwent some mechanical stress each time the beam was rapidly swept back for the next line ("retrace"), thus moving some air and creating the sound.  This pitch is high enough that in a room full of people there would be some who could and some who could not hear it.  The sound is also quite similar to the perceived sound many people with tinnitus experience.  Between these two effects, it was easy for arguments to start about whether the sound was real or not.  I was always very sensitive to the sound and could tell from several rooms away if a television was on. (Also: love the Philip Glass, both original and choral versions.) [[Special:Contributions/162.158.56.173|162.158.56.173]] 20:43, 2 November 2015 (UTC)
 
There's a storyteller by A.E. van Vogt, "The War against the Rull", which involves a young boy seeking the source of an almost subliminal noise.
 
 
There's an [https://www.bbc.co.uk/news/uk-england-leeds-63610977 ongoing hum] (low-pitched) still bothering a community, which I see again is in the news. Unrelated (as I don't live there) I also seem to have a sensitivity to a mains-frequency hum in the very fabric of a building (not tracable to TVs, computers, fridges, central-heating punps, etc). I can move my head around to change the intensity, but without better localisation... It seems to be pervasive and I'm just ducking into and out of complex reinforcing/destructive interference patterns from the multisource and/or wall-reflected disturbances, at a scale which seems to involve each ear differently. Right now, in a quiet room, I can perceive some actual tinnitus whine (would not consider it a high-pitched "hum"), the 'mains hum' (or so I presume, and this is what I always imagined the comic's device to "be creating", if you consider 50hz "high pitched"), the white-noise of the gas fire's burner ''and'' the sound of a straining computer fan in the next room (I'm running something intensive on it, from time to time there's a step-change up or down in its speed, so distinct and aurally observable as unrelated to the generally consistant 'mains hum' - not even an overtone/undertone relationship, if I'm any judge). —{{unsigned ip|172.70.86.10}}
 

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