What note is this sample? All of them, at once.
Every sampler asks for the root note; almost no sample tells you. Drop the folder — YIN pitch detection reads each one and hands you the list, confidence included.
Nothing is uploaded — your audio never leaves your device.
| Sample | Root note | Hz | Confidence |
|---|
Knowing the note is step one. Playing it everywhere is the point.
The SFZ mapper next door turns these detections into a playable instrument in one click — and VstChop in the studio does it from whole songs. Sign up: 3 full packs free.
Frequently asked questions
How does root note detection work?
Each sample's sustained portion runs through YIN pitch detection — the same family of algorithm hardware tuners use — and the detected frequency maps to the nearest MIDI note. A confidence marker shows how strongly the sample voted for its note.
Why do some samples come back uncertain?
Pitch detection needs a pitch: drums, noise sweeps, and chords don't have a single one. Low confidence on tonal material usually means heavy processing or a very short sample — trust your ears for those, or loop a longer sustain.
What do I do with the results?
Rename your files to include the note (the Auto-Renamer next door does it in batch), set root keys in your sampler, or feed the same samples to the SFZ mapper and skip the manual work entirely.
Does it detect the octave too?
Yes — results are full note names like A2 or F#4, not just pitch classes. That's what samplers actually need.