Just think about the phasing...

[kvoid]

I remember a recent thread that sought to minimize volume at a venue to avoid harassing neighbours. Well Italian physicists are here to help. Sure it's only theoretical but many of you with home studios in apartments should be happy you didn't buy a house and now you can hope to crank that rectifier or 5150 of yours properly...in a decade or so...

http://news.discovery.com/tech/one-way-sound-walls-acoustics-110505.html

and for those of you more technically inclined, here's the actual paper...

http://prl.aps.org/abstract/PRL/v106/i16/e164101

 

[Sloan]

IN BEFORE FALLOUT 2 SILENT ROOM.

 

[RedDog]

I remember reading up on ultrasound something or others, that project sound in only one direction. Let me see if I can dig that up.

Somehow, someway, you can make an entire wall a loudspeaker.

DOGEDIT: Here ya go

Read this too.

 

[SimonTaddio_Qc]

I love to read about these kinds of things. Thanks for sharing

 

[guitarguru777]

As cool as this is I always found my Recto and 5150 to sound best at Bedroom level with a mic on the cab :shrug: