One-shots in. A playable instrument out.
Drop your samples: YIN pitch detection finds each root note, the zones map themselves across the keyboard, and you can play it right here before exporting SFZ + DecentSampler formats every serious sampler reads.
Nothing is uploaded — your audio never leaves your device.
Click keys to play (or your keyboard's A–K row = white keys from C3). Samples sit on their detected root; zones fill the gaps. Click a sample chip below, then a key, to remap it.
You mapped one-shots. The studio maps whole songs.
VstChop in the studio builds instruments from a full song — region detection, note zones, articulations, export — automatically. Sign up: 3 full packs free.
Frequently asked questions
How do I turn WAV samples into a playable instrument?
Drop your one-shots (up to 24). Each gets pitch-detected and placed on its root note; zones stretch to fill the gaps between neighbors. Play the on-screen keyboard (or your QWERTY row) to test, drag any wrongly-detected sample to the right key, then export — the ZIP contains the .sfz, a .dspreset, and your samples, ready for Sforzando, DecentSampler, or Kontakt.
What is SFZ and why export it?
SFZ is the open, plain-text sampler format — a free instrument container every platform can open. DecentSampler is its friendlier cousin with a free player. Exporting both means your instrument runs anywhere, forever, with no license attached.
What if a root note is detected wrong?
Percussive or noisy samples confuse any pitch detector — that's physics. Wrong detections show a low-confidence marker; click the sample and tap the correct key to remap it. Tonal one-shots (keys, bass, plucks) detect nearly perfectly.
How many samples make a good instrument?
One sample per octave is playable; one every major third sounds natural; every note is sampling royalty. Even 4–6 well-spread one-shots make a surprisingly musical instrument once zones fill the gaps.