<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial,helvetica,sans-serif;font-size:12pt">BTW there was a unique wind-organ - created as sculpture for art - placed on a hill near where I used to live, near Lawrence Hall of Science in Berkeley. Due to complaints from neighbors (too loud at night) it was removed and given to the Smithsonian.<br><br>http://siris-artinventories.si.edu/ipac20/ipac.jsp?uri=full=3100001~!22349!0<br><br>It was basically 36 tuned harmonic pipes of various length. The sound was pleasing but ...<br>I suspect the sound intensity would be at the level of a few hundred watts if it were to be mimicked by a HiFi (which is why it had to be removed from that location). <br><br>I never thought about it in the context of wind energy til now - but if you managed to mount magnets on springs surrounded by coils or vice-versa topped with tuned pipes, then it could be a simple
method for wind energy. As for relative cost? Dunno. That would depend on mass production of the core and coil arrangement probably, and making it weather resistant. <br><br>One thing I do appreciate <g> is that your neighbors would not smile on your conservation efforts, green as they might be, especially when a strong wind set-in at 2 am.<br><br>Jones<br><br><br></div></body></html>