Demonstration benches, scale models, courses and classroom material. Whoever buys an instrument has to know how to use it.
Courses for competent acoustic technicians, school laboratories.
Two coupled boxes: you hear what changes.
A regulated, recurring market in Italy.
Architectural acoustics demonstrated on a physical model.
The formulas and the right positions in your pocket, not on your phone.
Third-octave bands, weighting curves, statutory limits.
Anyone buying a Kundt tube has to know how to use it.
The standing wave becomes visible: no slide replaces that. Planned variants: 100 mm diameter — 1.0 / 1.5 m long — with or without probe carriage.