Audio
Browser music and sound tools for sequencing, synthesis, effects, and export.
The Audio category contains browser-based music and sound tools that synthesize everything live with the Web Audio API — no samples, no downloads, no sign-in. Each tool exports your work to standard audio formats so you can use the output in other projects or share it directly.
Loopcade is a beginner-friendly step sequencer with five channels: drums plus four pitched voices. Paint notes into 1/16-step grids, tweak each voice's synth parameters, and dial in master effects including distortion, filter, delay, reverb, and a compressor limiter. The session ships with five presets and five scales, and the full pattern round-trips through JSON export.
Spectrogram Studio flips the usual synth workflow. Instead of oscillators and envelopes, you paint directly on a time-frequency grid where each filled cell represents a sine partial at that frequency for that time slice. Press Play and the grid is rendered as additive synthesis. It is a fundamentally different mental model from step sequencing — there is no BPM, no scale, and no note names, just continuous-spectrum painting.
Both tools export to WAV (16-bit stereo PCM with tail padding) and JSON for full project round-tripping. Loopcade additionally supports WEBM export for quick sharing. All sound is generated client-side, so there is no latency from network round-trips and no dependency on loaded samples.
