Why Does a Screen Re-Draw Make Noises? 236
grungy asks: "On several computers I have owned, I have noticed an audible noise related to large screen re-draws. A hardware guy once hypothesized that the large memory-move operation was creating electronic 'noise' which was then picked up and audibly amplified by my speaker. I unwired my speaker, removed it from the machine and put it in a different room, and the phenomenon still occurred. At this point I assumed it was something going on/emanating from the monitor itself. Now I have a TiBook laptop with an LCD panel. At quiet moments I can still hear it when I drag windows around. I have tried doing big memcpy's & the like, I don't get the same noise. I've been wondering about this for years. Anybody know what gives?"
All the little gates. (Score:2, Funny)
Tempest Radiation (Score:3, Funny)
In late 1997, a secret comittee was formed and ushed in a new era of aural-based tempest radiation sensors. They created a bill that stipulated all LCD monitors needed audio broadcasting capabilities for governmental remote viewing. It was rushed through congress during secret underworld briefings and eventually passed at the Grand New World Order Council, codified in January, 1998.
Today these signals are still somewhat perceptible in the lower frequencies, but they emit a wide spectrum for large data broadcasts. Simple listening devices can pick up many user metrics, and are not limited to merely what's displayed on the screen.
I hope this answers your question.
Noisesssssssses, yesssssss! (Score:5, Funny)
Do the noises sound like sounds?
Do the sounds sound like words?
Are they talking?
Talking to you?
Telling you to do something?
Something like...
Kill! Kill! Kill?
Kill the nassssty hobbitses?
For the precious, preciousssss, preciousssssss
Ring?
Yessssss. Yesssssss. Kill the hobbitses!
Re:Noisesssssssses, yesssssss! (Score:5, Funny)
stop eating mushrooms (Score:5, Funny)
That should solve the problem quick.
BOFH: (Score:5, Funny)
Looks like it's Duplicated backplane dereferencing signal.
You see, the operating system has to keep a buffer of the screen in memory, and similar to dereferencing a pointer, the dereferencing of this backplane, or buffer, temporarily distorts the signal on monitors that haven't been serviced lately.
{DUMMY MODE ON}
Luckily, this is something you can quiet fairly easily. Do you have a screwdriver?
Solution (Score:5, Funny)
Ok, this is what you need to do:
Listen to music. LOUD music. For years on end. Eventually, you will get to the point where you will no longer hear the noises coming from your computer. Problem solved!
Ehh? What did you say? Speak up, son!
Noise.... (Score:5, Funny)
It's a little guy in the computer with chalk, drawing the pictures on the screen. Sometimes when the screen "freezes" - it's him taking a break.
After a long spell at the coomputer you can usually hear him gasping for breath.
When he has run out of colours and he only has blue left - that when you get the BSOD.
Re:Noisesssssssses, yesssssss! (Score:3, Funny)
If it's humming, that's because it doesn't know the words.
Re:Static electricity? (Score:2, Funny)
I've got ones that fart, crackle and squeal. Everybody! Degauss on 3..2..1..
Re:Electromagnetism (Score:5, Funny)
Because they don't know the words?
--Dan
If you... (Score:5, Funny)
Re:Just wait a while... (Score:4, Funny)
What exactly is it you do for a living?! Do you hear these silent alarms often?
Re:Static electricity? (Score:2, Funny)
Re:Just wait a while... (Score:2, Funny)
He said he's 100% Irish. I think that's explanation enough.
Any more of these probing questions and we'll probably be seeing your name in the papers, and I don't mean the funnies.