Acoustic modes Calculator

The formula for acoustic modes in a resonant cavity, such as a pipe or a drum, depends on the geometry and boundary conditions of the cavity. For a cylindrical pipe with length $L$, the formula for the frequency $f$ of the $n$-th acoustic mode is:

Where:

• $c$ is the speed of sound in the medium inside the pipe (e.g., air).
• $n$ is the mode number, representing the number of half-wavelengths that fit into the length of the pipe.
• $L$ is the length of the pipe.