I'm on my cell phone speaking with my client or spouse, and I'm in a bar.
The clanking of glasses, the muffled thumping of house music, the occasional cheery guffaw of a slightly inebriated beauty -- all noises I would prefer muffled before my voice reaches the other end.
Can be customized for Baseball [cricket] games, bathroom use (muhahaha), and when (hypothetically, of course) your spouse is yelling at you.
Can also be reversed for dweebs who want the person on the other end to think they are in a hip bar, ballgame, or actually has a significant other to yell at them.
DrCurry had a similar idea suggesting cell phone booths, but I believe this might deserve a separate entry.-- mahatma, Jun 24 2004 Cell-phone muffler squelches street noise http://www.sciencen...8/10_24_98/fob5.htmCirca 1998. [phoenix, Oct 04 2004, last modified Oct 21 2004] Plantronics Tristar Headset http://www.computer...-w-Noise-Cancel.asp...with noise cancelling capabilities [phoenix, Oct 04 2004, last modified Oct 21 2004] Jabra EarWave Boom Cell Phone Headset http://www.1800mobi...ia-cell-phones.html...with Noise Cancelling Microphone. [phoenix, Oct 04 2004, last modified Oct 21 2004] Well you could get out some of the noise with a band pass filter. Just set one up that eliminates frequencies above and below the human voice range. Getting other people's voices out could be trickier.-- evilmathgenius, Jun 24 2004 Always a pleasure, BlissMiss.-- mahatma, Jun 24 2004 Thanks for the links, Phoenix. We're taking it a step further.-- mahatma, Jun 24 2004 Perhaps what's needed is a helmet made to go over one's whole head and phone. It would have to be airtight (sealed e.g. to one's neck), which would make for an excellent excuse to keep the conversation short.-- Etymon, Jun 25 2004 Why do I seem to have a strange habit of killing these conversations? Hmm... <ponders>-- Etymon, Jul 02 2004 [attempts to answer Etymon while strangling from lack of air, claws at helmet, collapses to floor]-- normzone, Jul 02 2004 random, halfbakery