[sdiy] Do I really need any more projects? organ mechanics

[John L Marshall]

It's kinda' like antennas. Closed pipes are 1/4 wave resonant and can 
include only odd harmonics. Open pipes are 1/2 wave resonant and can include 
all harmonics. Pipes can be viewed as a comb filter.

Take care,
John

Pacific Northwest Synth Meeting September 25, 2004
----- Original Message ----- 
From: "Glen" <mclilith at charter.net>
To: "James Patchell" <patchell at cox.net>; "Andreas Gaunitz" 
<andreas.gaunitz at konstfack.se>; <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, January 02, 2005 1:31 PM
Subject: Re: [sdiy] Do I really need any more projects? organ mechanics


> At 04:20 PM 1/2/05 , James Patchell wrote:
>>
>>The only parameter in an organ pipe that is significant to pitch is the
>>length of the pipe.
>
> That's not entirely true. Remember, some pipes are open at the top and 
> some
> are closed. This shifts things by an octave.  ;)
>
>
> take care,
> Glen
>
>
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