Excel Synth

A synthesiser inside Excel

The Excel Synth is a 4-channel polyphonic step sequencer built inside Microsoft Excel using VBA macros. No plugins, no DAW — just a spreadsheet generating real audio at 44,100Hz sample rate.

• 4 independent channels, 32 steps, 4 steps per beat
• Per-channel note selection across 4 octaves (C2–B5)
• Waveform per channel: sine, square, sawtooth, triangle
• Global ADSR envelope, filter cutoff, BPM
• Export to WAV — renders as a real downloadable audio file

Click. Edit. Play.

To add a note: click any NOTE cell. A dropdown appears — pick from C2 to B5, or select "— (clear)" to silence that step.

To change waveform: click any WAVE cell and pick sine, square, sawtooth, or triangle. Waveform only activates if the channel has a note.

To sequence: press Play. The pink playhead moves through all 32 steps. Adjust BPM, ADSR, and filter while playing.

To export: press Export WAV to download a rendered audio file of your full pattern.