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Acoustics of conical tubes

Author: Dave Beal
Date: 2006-02-11 03:47

Any physicists in the house? I'm trying to understand the acoustics of conical tubes, like saxophones and oboes. Cylindrical woodwinds make sense, with max pressure at the reed and a node at the bell. And I understand why the wave function in a conical tube must have a (1/r) factor, because within the cone the wave radiates like a sphere. But I don't get why this affects the wavelength of the wave. Can anyone explain why a closed conical tube has even harmonics?

BTW, the University of New South Wales has an excellent set of webpages on the acoustics of musical instruments: http://www.phys.unsw.edu.au/music/. But their discussion of this topic baffles me.

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Acoustics of conical tubes new

Dave Beal

2006-02-11 03:47

Re: Acoustics of conical tubes new

george

2006-02-11 04:30

Re: Acoustics of conical tubes new

Shorthand

2006-02-11 05:05

Re: Acoustics of conical tubes new

Chris P

2006-02-11 07:19

Re: Acoustics of conical tubes new

Tony Pay

2006-02-11 11:53

Re: Acoustics of conical tubes new

Tony Pay

2006-02-11 12:05

Re: Acoustics of conical tubes new

BobD

2006-02-11 11:42

Re: Acoustics of conical tubes new

Dave Beal

2006-02-11 15:29

Re: Acoustics of conical tubes new

Lelia Loban

2006-02-11 16:22

Re: Acoustics of conical tubes new

Tony Pay

2006-02-11 20:59

Re: Acoustics of conical tubes new

Gordon (NZ)

2006-02-12 05:19

Re: Acoustics of conical tubes new

Don Berger

2006-02-12 12:56

Re: Acoustics of conical tubes new

Shorthand

2006-02-12 13:33

Re: Acoustics of conical tubes new

Phat Cat

2006-02-13 03:02

Re: Acoustics of conical tubes new

Shorthand

2006-02-14 03:11

Re: Acoustics of conical tubes new

Bassie

2006-02-13 07:02

Re: Acoustics of conical tubes new

Phat Cat

2006-02-13 12:47

Re: Acoustics of conical tubes new

Bassie

2006-02-13 13:26

Re: Acoustics of conical tubes new

Phat Cat

2006-02-13 14:05

Re: Acoustics of conical tubes new

Dave Beal

2006-02-13 18:10

Re: Acoustics of conical tubes new

Chris P

2006-02-13 18:35

Re: Acoustics of conical tubes new

David Peacham

2006-02-13 19:05

Re: Acoustics of conical tubes new

Phat Cat

2006-02-13 19:09

Re: Acoustics of conical tubes new

Phat Cat

2006-02-13 22:22

Re: Acoustics of conical tubes new

Bassie

2006-02-14 07:59

Re: Acoustics of conical tubes new

Shorthand

2006-02-14 13:43

Re: Acoustics of conical tubes new

Shorthand

2006-02-14 14:34

Re: Acoustics of conical tubes new

David Peacham

2006-02-14 08:11

Re: Acoustics of conical tubes new

Phat Cat

2006-02-14 10:07

Re: Acoustics of conical tubes new

Bassie

2006-02-14 10:30

Re: Acoustics of conical tubes new

Phat Cat

2006-02-14 13:42

Re: Acoustics of conical tubes new

Chris P

2006-02-14 13:52

Re: Acoustics of conical tubes new

Bassie

2006-02-14 14:52

Re: Acoustics of conical tubes new

Shorthand

2006-02-15 15:00

Re: Acoustics of conical tubes new

Chris P

2006-02-14 15:09

Re: Acoustics of conical tubes new

Phat Cat

2006-02-14 15:15

Re: Acoustics of conical tubes new

J B Lansing

2006-02-15 22:25

Re: Acoustics of conical tubes new

Bassie

2006-02-21 09:34

Re: Acoustics of conical tubes new

Shorthand

2006-02-21 20:59

Re: Acoustics of conical tubes new

tictactux

2006-02-21 10:08

Re: Acoustics of conical tubes new

David Peacham

2006-02-21 10:24

Re: Acoustics of conical tubes new

Don Poulsen

2006-02-21 21:14

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