Any air movement creates Doppler shifts, so it will still affect the pitch very slightly. But the flutter effect from the sound bouncing off of a spinning fan (which I think is what you are referring to) would certainly be eliminated, so I agree it would be interesting. I'd like one to keep me cool on the warm summer nights! No noise! But then again, not at that price. Don Mannino -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Ron Nossaman Sent: Sunday, June 20, 2010 8:55 AM To: joegarrett at earthlink.net; pianotech at ptg.org Subject: Re: [pianotech] re.:Bladeless fan Joseph Garrett wrote: > I suspect you still get White Noise from the air movement, which would > still interfer with good hearing. That's one thing I was wondering about. You'll still hear the thing, because it has an internal fan, and being smaller, the internal fan will likely be noisier than a conventional fan. I don't see how air movement through the ring will generate any objectionable noise. I don't intend to get one but it did strike me as interesting, and something that shouldn't generate Doppler shifted echoes while tuning. Ron N
This PTG archive page provided courtesy of Moy Piano Service, LLC