It gets angrier the harder you hit it.
A filthy, resonant bass that opens up with how hard you play: soft presses stay round and dull, hard ones snarl. Use the arrow keys to drop an octave or two first, so the notes sit where a bass should.
Growler
A filthy bass that gets angrier the harder you hit it.
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Labels
Octave
0
Semitones
0
Sustain
Sustain off · hold Shift
Volume
Reverb
Mix
Glide
Glide time
No MIDI keyboard? Play with your computer keys: bottom rows are the lower octave, top rows the higher one. Hold Shift to sustain. ← → octave, ↑ ↓ semitone.
Online bass synth
A virtual bass synth, free in your browser
Best with a real keyboard.
Velocity is this sound's whole character, and a MIDI keyboard gives you far more control over it than letter keys, which play every note at one strength.
Free, nothing to install.
It runs in the page with no download and no account, and nothing you play leaves your computer.