12-12-2014 Post does not mapped to Knowledge Tree Romy the Cat Boston, MA Posts 10,400 Joined on 05-27-2004 Post #: 1 Post ID: 21393 Reply to: 21393 "Something is rotten in the state of Denmark". fiogf49gjkf0d Unquestionably it is a very interesting landscape project:   http://www.designboom.com/architecture/the-sound-of-denmark-2014-land-art-generator-initiative-10-10-2014/   …however from audio perspective it does raise a very interesting question. As you can see the mouth of that exponential horn has holes. For sure they did it to save material and ease the mass of the horns but it also might be a VERY interesting solution for LF only horn. It is known that exponential profile if used for lower octave produced very characteristic sound. The best remedy is to randomize the leading edge of the horn output with "confusing reflections". However here is where the Denmark folks unknowingly (because for wrong reasons) proposes to do something differently: to introduce the LF leaks in the horn and let some sound to be "shorted" at the exit of the horn. I think the proper "shorting" need to be done by radial sluts and perhaps to be adjustable (sluts might be closed). So to test it we would need to make lest say 100Hz exponential ½ horn and to permit it to have open-able sluts. It is possible, juts possible that this horn will have "gentle entry" into the room and will not sound like most of the exponential bass solution out there.   Tha Cat "I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche

12-12-2014 Post does not mapped to Knowledge Tree Paul S San Diego, California, USA Posts 2,797 Joined on 10-12-2006 Post #: 2 Post ID: 21394 Reply to: 21393 Horns and Loose Women fiogf49gjkf0d Are those photos, or "renderings"? If the former, and that project actually exists, someone put up a LOT of money for it! With respect to the "sluts", the blurb tells that the holes in the horns make different sounds that relate to the "elements". So, would slots in a smaller horn do the same and, if so, could these sounds be "tailored"? I hope someone will try it out. Paul S