Dual Oscillator & Beat Frequencies

Create beat frequencies and binaural beats with two oscillators

440 Hz + 445 Hz = 5 Hz beat frequency

What is Dual Oscillator Mode?

Dual oscillator mode plays two independent tones simultaneously. When two tones are close in frequency, they create an audible pulsing effect called a beat frequency.

The beat frequency equals the difference between the two frequencies. For example, 440 Hz and 445 Hz create a 5 Hz beat.

Two close frequencies create an amplitude modulation pattern

Dual Mode Controls

The dual oscillator panel provides independent control over each oscillator:

Frequency 1: The frequency of the first oscillator (20-20000 Hz)
Frequency 2: The frequency of the second oscillator (20-20000 Hz)
Waveform 1: The waveform shape for oscillator 1
Waveform 2: The waveform shape for oscillator 2
Mix: Balance between the two oscillators (0-100%)

Beat Frequency Formula: Beat frequency = |f₁ - f₂|. The display shows the current beat frequency in real-time.

Binaural Beats

When listening through headphones with different frequencies in each ear, the brain perceives the beat frequency. This is called a binaural beat and is used in meditation and relaxation.

Different frequencies in each ear create perception of beat in the brain

Brainwave	Frequency Range	Mental State
Delta	0.5 – 4 Hz	Deep sleep, healing
Theta	4 – 8 Hz	Meditation, creativity
Alpha	8 – 13 Hz	Relaxed focus, calm
Beta	13 – 30 Hz	Alert, active thinking

Headphones Required: Binaural beats only work with headphones, as each ear needs to receive a different frequency.

Applications

Instrument Tuning

Set both frequencies to the same value. When your instrument matches, the beating stops.

Try Tuning Mode

Alpha Relaxation

Use a 10 Hz beat frequency for calm, focused relaxation. Best with headphones.

Try Alpha Beats

Musical Intervals

Explore musical intervals by setting frequencies to harmonic ratios (e.g., 440 Hz and 660 Hz for a perfect fifth).

Try Perfect Fifth

URL Parameters

Share dual oscillator settings via URL:

gmode=dual — Activates dual oscillator mode
df1 — First oscillator frequency
df2 — Second oscillator frequency
dw1 — Waveform for oscillator 1
dw2 — Waveform for oscillator 2
dmix — Mix balance (0-100)

Example: #gmode=dual&df1=440&df2=445

Open Dual Mode