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TB-303 Pattern Helper
Acid-bass composer • Web Audio + MIDI
🌐
EN
▾
BPM
−
+
Root
C
C#
D
D#
E
F
F#
G
G#
A
A#
B
Oct
−2
−1
0
+1
+2
Swing
0%
Master
30%
🔔
Click
Step
—/—
SPECTRUM
SYNTHESIS
Waveform
Saw
Square
Saw
Square
OSCILLATOR
Tune
0
FILTER
Cutoff
800 Hz
Reso
6.0
Env Mod
55%
ENVELOPE
Decay
600 ms
ACCENT
Accent
70%
DISTORTION
Drive
0%
Tone
12000 Hz
Dist Vol
100%
Length
16
32
48
64
View
Horizontal
Vertical
Rows
1 octave (C2)
2 octaves
3 octaves (all)
↶
↷
TR-909 Drum Sequencer
🥁
GENERATE 909 FROM 303
▶️
PLAY
⏹️
STOP
🧹
CLEAR
🎲
RANDOM
📁
EXPORT MIDI
📘
GENERATE 303 / CLONE TUTORIAL
TD-3 • Behringer • RE-303 • any 16-step clone
💾
SAVE (library)
📋
SAVE TO CLIPBOARD
📂
LOAD (file…)
📋
LOAD FROM CLIPBOARD
🧩
PATTERNS / TRACK
❓
TD-3 FAQ
💾
SAVE 303+909 PRESET
⌨️
Keyboard shortcuts
TD-3 Programming Tutorial
×
Pattern Library & Track Mode
×
Saved patterns (localStorage)
Track Chain
Length
Apply
▶️
PLAY TRACK
⏹️
STOP TRACK
📘
TRACK TUTORIAL
TD-3 FAQ
×
909 Generator
×
Keyboard shortcuts
×