Resonance Tube
Interactive simulation — adjust parameters and watch the visualization update in real time.
Live graphs
How it works
Standing sound waves in a tube: allowed frequencies depend on boundary conditions. Open–open: fₙ = n·v/(2L). Open–closed (one closed end): odd quarter-wave modes, fₙ = (2n−1)·v/(4L). The animation shows a pressure-like pattern (schematic). Use Play to hear the selected harmonic.
Key equations
Open–open: fₙ = n v / (2L) · Open–closed: fₙ = (2n−1) v / (4L)