Search Ctrl K
Home / Tools
THE FEUTEX TOOLKIT

Open and Closed Pipe Resonance

Compare the fundamental and first overtone of ideal open and one-end-closed pipes.

Audio workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaOpen-pipe fundamental = c/(2*l); Closed-pipe fundamental = c/(4*l); Closed-pipe first overtone = 3*c/(4*l)
Sources and model references

Worked example

Inputs

Effective pipe length
0.5 m
Sound speed
340 m/s

Expected results

Open-pipe fundamental
340 Hz
Closed-pipe fundamental
170 Hz
Closed-pipe first overtone
510 Hz

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Compare the fundamental and first overtone of ideal open and one-end-closed pipes.
  2. Set effective pipe length, sound speed in the indicated units.
  3. Calculate and compare open-pipe fundamental, closed-pipe fundamental, closed-pipe first overtone.

Try this example

{
  "l": 0.5,
  "c": 340
}

Accuracy and scope

Idealized educational model. Enter measured values in the displayed units; real systems may require additional corrections.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.