PHYSICAClass 11 Physics simulations · Waves
Beats: two notes, one pulsing sound
Superpose two nearby frequencies and see the amplitude rise and fall in beats.
What to notice
The rapid oscillations sit inside a slowly changing envelope. Each loudness maximum is one beat.
Key relation
fbeat = |f₁ − f₂|
Try this
Turn on Sound, then bring the frequencies closer together.
What you can change
- Frequency f₁: 2 to 6 Hz
- Frequency f₂: 2 to 6 Hz
- Each wave amplitude: 0.5 to 1.5 units
More in Waves
- Doppler effect
- Open and closed organ pipes
- Pulse reflection at a boundary
- Resonance tube: speed of sound
- Ripple tank: two-source interference
- Sonometer: frequency and length
- Standing waves on a string
- Wave speed on a stretched rope
- Superposition of two waves
- Travelling wave
See all Class 11 Physics simulations or every Physica simulation.