Triangle Wave Generator Online — Free Mellow Pure Tone
Generate triangle waves online — the soft, mellow, harmonic-light waveform that sits between sine purity and sawtooth brightness. Free, instant, in your browser.
What is a Triangle Wave?
A triangle wave is a non-sinusoidal periodic waveform that ramps linearly up and down to form a symmetrical triangular shape. It contains only odd harmonics, and those harmonics fall off rapidly (at 1/n²), giving it a sound that is much mellower and closer to a sine wave than either square or sawtooth.
In synthesis, triangle waves are prized for soft basses, gentle leads, and flute-like sounds where you want some character without the brightness of a sawtooth. Our triangle wave generator produces a pure, distortion-free triangle wave instantly in your browser.
Features
Pure Triangle
Mathematically perfect triangular shape — full odd-harmonic content with steep roll-off.
Full Audible Range
Triangle waves across 20 Hz to 20 kHz with 1 Hz precision.
Soft & Musical
Naturally mellow character — easy to listen to, never harsh.
Compare Waveforms
Switch instantly between triangle, sine, square, sawtooth to hear differences.
Real-Time Control
Slide and the frequency updates live — no clicks, no glitches.
Gentle on Ears
Triangle is lower-energy than sawtooth or square — safer for extended listening.
Common Uses
Triangle is the secret behind many warm, vintage synth bass patches.
Show how odd-harmonic 1/n² roll-off makes triangle sound mellower than square.
Less harsh than sawtooth — better for long-duration speaker testing.
Slow triangle waves are the most common LFO shape for vibrato and tremolo.
How to Use
1. Choose Waveform
Pick sine, square, sawtooth, or triangle depending on the tone character you need.
2. Set Frequency
Use the slider or tap a preset to dial the exact frequency you need.
3. Adjust Volume
Start at low volume — pure tones can be louder than they feel.
4. Press Play
Hit Play and the tone keeps playing continuously until stopped.
Frequently Asked Questions
Mellow and smooth — much closer to a sine wave than a sawtooth. Think of an old chiptune flute or a soft Moog bass tone.
A sine wave has no harmonics. A triangle wave has odd harmonics but they fall off quickly, so it sounds almost as pure as sine with just a hint of buzz.
It gives more character than sine but stays musical. Perfect for soft bass, mellow leads, and bell-like patches. Many classic Korg and Moog sounds start with a triangle oscillator.
Marginally — only the odd harmonics add a small amount of total energy. The perceived loudness is similar to sine at the same amplitude.
Yes — by clipping or differentiating the triangle wave you can transform it into other shapes. Many vintage synths used this trick to save oscillator count.
Hearing Safety
Pure tones — especially below 40 Hz or above 10 kHz — carry significant energy at high volumes. Start low and protect your hearing and speakers.