Sound wave thru a tube question

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Discussion Overview

The discussion revolves around the behavior of sound waves traveling through two different tube configurations. Participants explore how changes in tube diameter might affect the sound characteristics at the exit of the tubes. The scope includes conceptual reasoning and exploratory analysis related to acoustics.

Discussion Character

  • Exploratory, Conceptual clarification

Main Points Raised

  • One participant suggests that the sound exiting the tubes will differ due to the expansion to a larger diameter, implying that this change alters the sound wave characteristics.
  • Another participant questions whether the inquiry is related to homework, indicating a potential misunderstanding of the context.
  • A later reply clarifies that the inquiry is for a personal project, reinforcing the idea that the sound exiting the tubes may be different, though specifics on how it changes remain unclear.
  • There is speculation about whether the sound might have a lower tone after passing through the larger diameter section.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether the sound exiting both tubes will be the same, with differing views on how the change in diameter affects the sound.

Contextual Notes

Unresolved aspects include the specific mechanisms by which the sound characteristics change and the assumptions regarding sound wave behavior in varying tube diameters.

Who May Find This Useful

Individuals interested in acoustics, sound wave behavior, or those working on personal projects related to sound transmission may find this discussion relevant.

steveo70
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I have two tubes. Both are 12 feet long. One is 4" diameter for its entire length. The other has a 4" diameter segment for 4 feet, expands to 5" diameter for 4 feet, then reduces back to 4" for the remaining 4 feet.

If the same sound is injected into both tubes, will the sound exiting the far end of both tubes be the same ? Any info would be helpful. Thanks.
 
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No. Because when the sound waves expand to 5", it's like starting with a whole new sound then it reenters the 4" section which changes the sound once more.
 
This is not homework, its for a personal project. I am (obviously) not an engineer.

So the sound exiting is different ? How ? Lower tone ?
 

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