Date: Thu, 15 Sep 2005 16:38:34 -0500

Author: ramirez@physics.tamu.edu

Subject: Re: singing drain pipe

Post:


I have used the built-in air source in our building.
Works good, and no shop vac noise.

(but limited to about 4 harmonics)

Santos




Quoting Thomas J Senior :

> Hi Richard,
>
> You might get your pipe to sing by blowing air through it using a shop
> vac. By moving the output hose of the shop vac to different distances from
> the end of your corrigated tube, you can change the flow rate through the
> tube and the harmonic which is played. I have done this with many sized
> corrigated tubes and it works pretty well. I can get up to 7 harmonics on my
> larger tube. When I did it in a demo show in front of the acoustic
> society, I asked them to explain how it works after the show. No one even
> tried.
>
> have phun,
>
> Tom
>
>
>
> Thomas J. Senior
> New Trier High School
> 385 Winnetka Ave
> Winnetka, IL 60093-4295
> 847-784-6739
> >>> Richard Flarend 09/14/05 10:41 AM >>>
> I would like to do the singing pipe demo with large 4" pipe drain pipe.
> The pipe I bought from my local Lowes store didn't sing (it was 10'
> long, 4" outdoor drain pipe, without the drainage holes) and I turned it
> as fast as I was capable. Is there something I'm missing? Where have
> other folks bought pipe that does work?
>
> Thanks,
> RF
>
> --
> Richard Flarend
> Associate Professor of Physics
> Penn State Altoona
> 3000 Ivyside Park
> Altoona, PA 16601
>
> 814-949-5744
> 814-949-5011 (fax)
>
>
>
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