What Is Acoustic Length in Musical Instruments?

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    Acoustic Length
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Acoustic length refers to the effective length of a column of air in a musical instrument, which differs from its physical length due to the behavior of sound waves. Sound waves perceive the length based on pressure variations, leading to discrepancies between the actual length and the acoustic length. Factors such as end correction and tone-hole lattice can influence this measurement. Understanding acoustic length is crucial for instrument makers, particularly for achieving desired tonal qualities. This concept is essential for anyone interested in the physics of sound in musical instruments.
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Hi, I'm not sure if this is the correct forum, or even the correct website but you all seem to know what you're talking about! I make native american style flutes, and have recently become interested in the physics of sound and soundwaves, etc.

I've done well in my research, but have come across some information that contradicts each other. I just need a small clarification.

What exactly is the "Acoustic Length"?
 
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beaverflutes said:
What exactly is the "Acoustic Length"?

When it comes to the question: "how long is a pipe really?", soundwaves experience things differently from humans. Acoustic length is the length of a column of air (or, ofcourse, any other medium able to propagate sound) as seen from the perspective of the pressurewave traveling through it.

If you haven't already, you might want to look into End correction of a pipe and Tone-hole lattice.

Hoping I'm helping, not just sucking eggs... :shy:
 

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