No more standing waves?

Bill poster · 28th July 2011, 08:10 PM

I thought this could interest some of you

Acoustic diode allows sound waves to only travel in one direction

CLS · 29th July 2011, 08:33 AM

Quote:

The diode contains an assembly of elastic spheres, made from granular crystals that transmit sound vibrations.

Must be expensive. And how to use it?

Let's assume we have a whole wall of this stuff dividing the room into two parts, and loudspeakers are playing in one of the space. Then what?

The sound travels through this one-way wall to the next, then bouncing around within that part of room and do nothing to this side? In reality, if we don't have a proper next room to spare, we still need absorbing and/or duffusing materials somewhere to clean things up.

DrDyna · 29th July 2011, 12:55 PM

Well, it passes sound in one direction and creates a sonic black hole in the other..I wonder what would happen if you hung a small sheet of it inside a speaker cabinet?

Also, I wonder what the effect would be to have a small strip between a woofer and tweeter on the outside of a cabinet where the side facing the woofer absorbs and the side facing the tweeter passes?

*Shrug* it might be a cool toy to play with provided it's not $100,000 sqft.

28th July 2011, 08:10 PM	#1
Bill poster diyAudio Member Join Date: Jun 2008 Location: London	No more standing waves? I thought this could interest some of you Acoustic diode allows sound waves to only travel in one direction __________________ Cool Loudspeakers Facebook group http://www.facebook.com/media/set/?s...24506880902633

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29th July 2011, 12:55 PM	#3
DrDyna diyAudio Member Join Date: May 2007 Blog Entries: 3	Well, it passes sound in one direction and creates a sonic black hole in the other..I wonder what would happen if you hung a small sheet of it inside a speaker cabinet? Also, I wonder what the effect would be to have a small strip between a woofer and tweeter on the outside of a cabinet where the side facing the woofer absorbs and the side facing the tweeter passes? Shrug it might be a cool toy to play with provided it's not $100,000 sqft.

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