Acoustic Length in Pipe/Tube Explained - Physics Lab

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Acoustic length in a pipe or tube refers to an imaginary measurement that exceeds the actual physical length of the tube. It is calculated using the formula L = λ/4, with higher harmonics being odd multiples of this fundamental length. This concept is crucial for accurately predicting sound behavior in tubes, as it allows for the use of acoustic length in relevant equations. The acoustic length is essential for understanding resonance and sound wave propagation in musical instruments and other applications. Further details and visual explanations can be found on dedicated resources like Flutopedia.
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What is acoustic length in a pipe/tube? On a physics lab, the lab write up mentions it but it doesn't explain what it is. I know it's give by L = λ/4 and higher ones will be odd multiples of the first one. But what does this actually mean and what is it for? I looked it up but couldn't find any information.
Some help would be appreciated.
 
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hi! polaris90! :smile:

acoustic length of a tube is an imaginary measurement that's longer than the actual length …

you put it into equations (instead of the actual length), and the equations work! :wink:

see eg http://www.flutopedia.com/acoustic_length.htm for details, and lots of pretty pictures​
 
ok, thank you. That was very helpful
 

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