Local Audio Studio
Edit up to four local tracks, render independent tempo/pitch and effects, and export real WAV/FLAC.
Enabling local controls…
Local files only; no upload, URL fetch or microphone. Files: 8 MiB each / 32 MiB total. PCM: 32 MiB. History: 64 MiB. Up to 4 tracks / 180 seconds within PCM limits. Containers:WAV/FLAC/MP3/Ogg/AAC/M4A/WebM;native codecs may be unavailable;metadata success is not decode proof. Apply renders effects with independent tempo/pitch;presets are approximate recipes,not a live DAW/mastering engine.
Tracks and selection
Shortcuts while focused outside fields:Ctrl/Cmd+Z/Y/C/V/D,Delete;copy/paste use the internal audio clipboard only.
Without a selection,edits use the whole track;Paste replaces the selection.
Actual waveform and playback
Effects and independent tempo/pitch
Effect parameters(Apply to change audio)
Approximate presets(apply immediately;Undo available)
Complete export
Complete audio output≤32MiB;WAV/FLAC quantize toPCM16. Excess gain is hard-clipped with clipped-sample count reported. Effect tails do not extend the clip. Projects use this tool's version1format,≤8MiB,retaining tracks and exact floatPCM for reopening.
Processing engines and licenses: Signalsmith Stretch(MIT) · libflacjs5.6.0(MIT)/libFLAC(BSD) · music-metadata(MIT) · ToolHub source reviewed2026-10-19
How to use this tool
Open local audio, select a track/range, edit or render effects, then explicitly play or export the mix. Save a local project to preserve tracks; no browser storage or microphone.
When not to use it
Files8MiB each/32MiB total; decoded PCM32MiB; history64MiB;4mono/stereo tracks,8–48kHz,180seconds maximum within memory limits. Export32MiB; reopenable project8MiB. Browser codecs/AudioWorklet support vary. Effects are rendered on Apply; tails are clipped to the current clip duration. WAV/FLAC encode PCM16; FLAC preserves that quantized PCM exactly.