As an alternative to round and flat transducers, cord speakers are installed in party buses, closets, and just hanging there in your house.
Each cord is essentially a stringed instrument that plays itself.
Portable versions could be made into concave enclosures to direct the sound.-- HitsMiss, Jun 03 2014 Built into your party bus, for complementary sound... Audio_20Airbags [normzone, Jun 06 2014] Bun! [+]-- Grogster, Jun 04 2014 Welcome to the bakery and thank you for having the guts to post an idea. I'm not able to garner up the guts lately, so good for you. Not sure about the actual idea though. Gotta think about it. Have to research what you suggest.-- blissmiss, Jun 04 2014 Could be cool combined with strobe lighting and some of those EHT- discharge tweeters. [+]-- 8th of 7, Jun 04 2014 The idea sounds cool, but I doubt it would work very well. Think of a guitar string. You can pluck it hard and see it vibrating 1/8th inch, but if it weren't for the body of the guitar, it is barely audible. A vibrating string doesn't actually move much air.
Now if you made a string or cord that could change its diameter very rapidly rather than vibrate, then this could work, but I'm not aware of any way to do that.-- scad mientist, Jun 04 2014 Cordtex can increase its diameter very rapidly, but the process isn't reversible ...-- 8th of 7, Jun 04 2014 As was said, a string by itself doesn't move much air. The string has to vibrate something flat, usually (the term is "impedance matching"). You might be able to use a ribbon, instead of a string.-- baconbrain, Jun 04 2014 ^Ribbon speakers are rather deep-fried.-- FlyingToaster, Jun 04 2014 //Cordtex can increase its diameter very rapidly, but the process isn't reversible ...//
Lord Kelvin (he of the temperature unit) invented two forms of amplifier. One was the Kelvin Water Amplifier.
The other was the Gunpowder Amplifier (though, technically, it wasn't an amplifier), consisting of a line of gunpowder whose thickness varied, waveformwise. He successfully reproduced the first four notes of Beethoven's Fifth.-- MaxwellBuchanan, Jun 04 2014 The string needs the violin in order to make a significant amount of noise.-- MaxwellBuchanan, Jun 05 2014 // installed in party buses, closets //
Well, there's your resonant chamber. Tension the strings between the roof and floor of the party bus or closet. Drive them electromagnetically. Bam, mobile or bedroom string orchestra.
Now, where to order a nice mahogany party closet...-- BunsenHoneydew, Jun 06 2014 //tension the strings between the roof and floor// but then they wouldn't be "just hanging there". My bone remains until I see a clear way for loosely hanging wires to vibrate with sufficient energy to make a decent speaker.-- Voice, Jun 06 2014 random, halfbakery