Waveform Shape Player
Hear how different waveform shapes sound — sine, square, sawtooth and triangle.
The shape of a sound
The shape of a sound wave determines its character, or timbre — why a sine, square, sawtooth and triangle wave at the same pitch sound so different. This plays the basic waveform shapes so you can hear how each one sounds.
Choose a waveform to hear its character.
Why waveform shape defines timbre
This gets at something fundamental about sound: two sounds can be the same pitch and loudness yet sound completely different, and that difference is timbre, which comes largely from the wave's shape. A pure sine wave is the smoothest, containing only its single frequency, and sounds soft and flute-like. A square wave sounds hollow and buzzy, a sawtooth bright and harsh, a triangle mellow and somewhere between — and the reason is that these shapes contain not just their base frequency but a specific set of higher harmonics, and it is the pattern of those harmonics that our ears perceive as the character of the sound. This is the foundation of synthesis, where these basic waveforms are the raw material shaped into all the sounds of electronic music. Hearing the shapes side by side makes the abstract idea of timbre concrete, revealing why the same note can sound gentle or aggressive purely because of the shape of its wave.
Waveform Shape Player FAQ
Why do different waveforms at the same pitch sound different?
Because the wave's shape determines its timbre — each shape contains a different pattern of higher harmonics on top of the base frequency, which the ear hears as character.
Why is a sine wave the smoothest?
It contains only its single frequency with no added harmonics, so it sounds pure and soft, while shapes like square and sawtooth add harmonics that make them buzzy or bright.
Is anything uploaded?
No. The tones are generated in your browser.