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Main => Everything Else => Topic started by: monkeybomb on May 26, 2005, 04:30:07 pm

Title: Why do speakers pick up cell phone rings?
Post by: monkeybomb on May 26, 2005, 04:30:07 pm
Every time my cell rings my speakers make a da..da..da..da..da... sound.  I'm sure most know what I mean.  Anyway why does it do that? 
Title: Re: Why do speakers pick up cell phone rings?
Post by: ChadTower on May 26, 2005, 04:32:57 pm
The unshielded speaker wires are acting as an antenna and picking up the electromagnetic data bursts as your phone communicates with the tower.
Title: Re: Why do speakers pick up cell phone rings?
Post by: monkeybomb on May 26, 2005, 04:46:35 pm
 :D Thanks Mr. Wizard, now I know  :D
Title: Re: Why do speakers pick up cell phone rings?
Post by: shmokes on May 26, 2005, 10:30:06 pm
God....why can't I resist.  I know it's what he wants me to do and still.....I.....


And knowing is half the battle!
Title: Re: Why do speakers pick up cell phone rings?
Post by: missioncontrol on May 27, 2005, 10:06:26 am
hmmmmmmmmm I was wondering that myself....

And now I know.........
Title: Re: Why do speakers pick up cell phone rings?
Post by: Stingray on May 27, 2005, 11:05:05 am
The speakers in my MAME cab actually pick up voice. Often very faintly you can hear people talking. Don't know if it's cell phones or CB radio, but it really freaked me out the first time it happened before I realised where it was coming from.

-S
Title: Re: Why do speakers pick up cell phone rings?
Post by: ChadTower on May 27, 2005, 11:09:24 am
The speakers in my MAME cab actually pick up voice. Often very faintly you can hear people talking. Don't know if it's cell phones or CB radio, but it really freaked me out the first time it happened before I realised where it was coming from.

That has to be radio, probably CB or someone's baby monitor.  Actual sustained communication between the phone and the tower are done via different frequencies than the short data bursts that normal speakers pick up.  If this were not the case you'd interfere with your speakers the whole time you're on the phone.
Title: Re: Why do speakers pick up cell phone rings?
Post by: Stingray on May 27, 2005, 11:12:52 am
Yeah, I've suspected CB radio myself. I live a couple miles from an interstate, with no hills or tall buildings between. It's probably truckers. I don't have any neighbors that are close enough for it to be a baby monitor.

-S