9.15 MB

HTML-based instrument for extreme time stretching. LOOM is a browser instrument that stretches a sound in time to build textures, pads and drones. It can make a short sample last for minutes without changing its pitch. It runs as a single HTML file, works offline, and needs no installation.

How to use it
1. Load a sample. Click + sample. WAV, AIFF / AIF, MP3 and FLAC are supported.
2. Choose a region (optional). Drag on the source waveform to select part of the sound. This is useful, because a very large stretch of a long file produces very long output. Click once to set a start point; double-click to clear the selection.
3. Listen first. Press Audition to hear the whole sample, or only the selected region.
4. Set the controls (see below) and press Render. The work runs in the background with a progress bar, and you can Cancel.
5. Play and check. Press Play. You can click anywhere on the rendered waveform to start playback from that point — useful when you want to hear only the end of a long texture.
6. Export. Choose WAV or AIFF, choose the bit depth, and press Download.

The controls
– Stretch — how much longer the sound becomes (time only). The slider goes very far; the number box accepts even larger values.
– Pitch — transposition in semitones, fully separate from stretch. The range is very wide, several octaves up or down.
– Weave — how many grains overlap at each moment (1 to 16). Low values sound rough and pulsing, and broken at 1. Higher values sound smooth and glassy. The strongest change is between 1 and 4.
– Scatter — how much the phase is invented (0 to 100%). At 0 the real phase is kept, so the stretch stays coherent and attacks survive. At 100% it is the full texture effect.
– Drift — the reading position wanders. Each grain reads from a slightly different, moving point in the sample. At 0 it is off. Higher values make the texture breathe and change over time, and make the higher Weave values meaningful.
– Reverb and Size — an internal reverb (amount and decay length) added after the stretch.
– Gain — output level.
– Normalize — brings the level up to a safe maximum.
– Mono → stereo — from a mono sample, builds a wide stereo texture using two independent phase passes.
– Reverse — plays the stretched sound backwards.

Stretch, pitch, weave, scatter and drift are part of the engine, so a change needs a new Render. Reverb, size, gain, normalize and reverse are applied afterwards, so you hear them at once.

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LOOM  ( 9 MB )