01
Audio to MIDI
Transcribe melodic lines using Spotify Basic Pitch. Clear single-instrument or melody audio works better than dense mixes.
Open Audio to MIDISampLab Pro
SampLab Pro Audio & MIDI Suite
A practical suite of six browser-based audio and MIDI utilities. All processing runs directly on your device with no accounts or paid tiers.
Available Audio & MIDI Tools
Select a utility to process media on your machine. Technical limits apply: audio up to 50MB (1 second to 10 minutes; decoding varies by format) and MIDI files up to 50MB (rendering up to 10 minutes, 20,000-note limit).
02
BPM & Key Finder
Estimate tempo and musical key directly from imported audio tracks to assist arrangement and beatmatching.
Open BPM & Key Finder
03
Chord Recognition
Analyze harmonic structures across audio tracks to estimate chord progressions for transcription reference.
Open Chord Recognition
04
Frequency Band Splitter
Split audio into overlapping bands: low (~180 Hz), body (~900 Hz), and high (~2800 Hz). Filters frequencies rather than isolating stems, vocals, drums, or bass.
Open Frequency Band Splitter
05
MIDI to Audio
Synthesize .mid and .midi files into sound directly in your browser, supporting up to 20,000 notes and 10 minutes of playback.
Open MIDI to Audio
06
Lead Sheet Generator
Generate readable lead sheet notation from pitch, timing, and chord estimates for practice and drafting.
Open Lead Sheet GeneratorIndependent and Client-Side
SampLab Pro is an independent project not affiliated with the Samplab VST or samplab.com. Processing executes locally within the browser, keeping your audio private. Initial model loading can take extra time depending on connection and device performance.
Practical Music Tools Without Accounts
Every tool is free to use with no subscription signups. Outputs are algorithmic estimates designed to be checked by ear.
Launch Audio to MIDI