The mystery of the whirly tube’s missing fundamental mode [study]

The musical instrument shown above is known by various names e.g. the whirly tube, the corrugaphone, the bloogle resonator, the voice of the dragon, the hummer, and even, according to American composer (and parodist) Peter Schickele the “Lasso d’Amore”. For acousticians, it’s noteworthy because the fundamental acoustic mode, that’s to say the note that one […]