PURPOSE: To demonstrate some acoustical features of the trumpet.

DESCRIPTION: Adding a trumpet mouthpiece and a funnel to the opposite ends of a flexible plastic tube creates a "flexible trumpet" which has all of the basic acoustical features of the real thing. The overtones are those of a valveless trumpet; like the trumpet, the fundamental is not good on the device.

Click here to hear the harmonics playable on this "trumpet" compared with the actual harmonics of the fundamental frequency sounded on a Fourier synthesizer.

Use this demonstration with Demonstrations H4-36: LIP-BLOWN TUBE and H4-38: CORNET to show the acoustical development of the trumpet (or cornet).

SUGGESTIONS:

REFERENCES: (PIRA 3D32.35)

EQUIPMENT: Plastic tube with trumpet mouthpiece and funnel.

SETUP TIME: None.