Function and Applications

Acoustic source to demonstrate the Doppler effect.
Integrated loudspeaker, 2 sinus tones with different frequencies selectable (audible and ultrasound), volume tunable.

Benefits

• Compact, with integrated hook, thus can be mounted on a cart or spring
• Tunable volume
• 2 sinus tones with different frequencies selectable: audible for demonstration of the Doppler effect, and ultrasound for quantitative measurements of the frequency shift

Equipment and Technical Data

• Selectable frequencies: 4,6 kHz (audible) und 19 kHz (ultrasound)
• Volume tunable
• Power supply: Monobloc battery 9 V
• Dimensions: (90 x 65 x 28) mm
• Weight (incl. battery): 115 g