A low tech version of the experiment is shown in this UCLA lecture ... WARNING: This version plays the ACTUAL TONES used to generate the resonance designs and the sound can get VERY LOUD!

A whirly tube (a tube of corrugated plastic, also known as a corruga tube) is whirled in circles at different speeds producing resonance at different pitches, along with overtones. Details of the ...

In a simulated tree-hole experiment, we placed a calling male in an opaque plastic tube that was partially ... to the air-column depth in dynamic resonance units (DRU), calculated as the call ...