Plan a DJ set, clean a library or capture performance motion.
Turn a local DJ crate into an explainable route, cluster exact and likely near-duplicate files, render tracks toward one loudness target, build an SFZ instrument or inspect a release. Thirty-seven local creation and measurement tools cover planning, library cleanup, delivery, sampling and signal checks.
Quick answer: Use DJ Set Planner to analyze and order a crate; Audio Duplicate Finder to review repeated files; Batch Loudness Matcher to render a consistent delivery; and SFZ Sampler Builder for playable sample zones.
Find the right tool without reading the whole catalog
Search by a problem, tool name or result. Everything below stays available as static, indexable content.
37 tools, grouped by job.
Find repeated assets, match the release, map the samples
Move from a cluttered library to reviewable duplicate clusters, from uneven files to a level-consistent batch, or from loose WAVs to a playable sampler.
All Create & Analyze tools
Compose or humanize MIDI-ready parts
Transform an imported performance or start with harmony, melody, bass and chord motion, then export a playable draft for a DAW.
MIDI Humanizer
A MIDI performance editor that imports existing note events and applies repeatable bounded changes to timing, velocity and gate length instead of generating a new composition.
Open MIDI Humanizer β πΌChord Progression Generator & MIDI Maker
A local Roman-numeral chord progression generator that resolves a chosen key and scale into editable chord names, notes and MIDI events.
Open Chord Progression Generator & MIDI Maker β π΅Melody Generator & MIDI Maker
A deterministic monophonic melody generator that turns key, scale, contour, range, rhythm, repetition, rest and seed controls into editable notes.
Open Melody Generator & MIDI Maker β πΈBassline Generator & MIDI Maker
A deterministic bassline generator that converts editable chord roots and groove settings into a low-register monophonic pattern.
Open Bassline Generator & MIDI Maker β πOnline Arpeggiator & MIDI Export
A local arpeggiator that expands editable chord tones into ordered, rate-based note steps across one or more octaves.
Open Online Arpeggiator & MIDI Export βClean, match or inspect releases
Find repeated assets, render a level-matched batch, extract control data, check an album, compare renders and inspect signal behavior.
Audio Duplicate Finder
A local library scanner that separates exact decoded-audio copies from likely near-duplicates and groups reviewable pairs without deleting any files.
Open Audio Duplicate Finder β LUBatch Loudness Matcher
A local multi-file renderer that measures every track with one consistent gated loudness estimate, targets a custom value or reference track and exports matched audio as a batch.
Open Batch Loudness Matcher β βAudio Envelope Extractor
A local analysis workspace that converts changing audio amplitude into time-stamped automation points instead of drawing a static waveform image.
Open Audio Envelope Extractor β β₯Album Loudness Analyzer
A batch release-QC workspace that measures multiple tracks consistently and compares their duration, level, crest and stereo behavior as one ordered album or playlist.
Open Album Loudness Analyzer β ΞAudio Difference Checker
A two-file mix-revision comparator that estimates a bounded time offset, polarity and level mismatch before exposing the residual Difference signal.
Open Audio Difference Checker β π °οΈABX Audio Test & Comparator
A blind listening test that keeps two decoded sources synchronized, hides whether X is A or B and scores repeatable choices without revealing the answer early.
Open ABX Audio Test & Comparator β πOnline Audio Oscilloscope
An interactive time-domain oscilloscope for a microphone, uploaded file or generated reference tone, with trigger, timebase, channel and cursor controls.
Open Online Audio Oscilloscope β ποΈMicrophone Level Meter
A live digital input meter for relative RMS, peak, headroom, peak hold and clipping events from the current microphone.
Open Microphone Level Meter β π§ͺAudio File Analyzer
A local audio quality report that measures technical file facts and signal statistics from a decoded track.
Open Audio File Analyzer β βοΈStereo Phase & Mono Compatibility Checker
A local stereo correlation and mono-compatibility report that scans the complete decoded file instead of showing only a momentary meter.
Open Stereo Phase & Mono Compatibility Checker β πSpectrogram Analyzer
An audio spectrum analyzer online with live spectrum and scrolling spectrogram views plus a bounded full-file peak-frequency timeline.
Open Spectrogram Analyzer β γ°οΈAudio Waveform Generator
A local sound-wave image maker that reduces decoded audio into a full-file min/max peak envelope for PNG or SVG export.
Open Audio Waveform Generator βPlan sets; find tempo, drums, groove, pitch & harmony
Route a complete DJ crate, map changing tempo, classify drum hits, extract groove, estimate key and chords, keep time and explore pitch references.
DJ Set Planner
A local crate-analysis and set-routing workspace that keeps BPM, Camelot key, relative intensity, confidence and every adjacent transition score visible and editable.
Open DJ Set Planner β βTempo Map Generator
A changing-tempo analyzer that converts detected beat timing into editable BPM markers instead of reducing an entire performance to one average tempo.
Open Tempo Map Generator β β«Drum Loop to MIDI
A drum transcription workspace that detects attacks, classifies their low, mid and high-frequency character and exports separate GM kick, snare and hi-hat notes.
Open Drum Loop to MIDI β βGroove Template Extractor
An audio-to-groove workflow that detects percussive attacks and records how their timing and strength depart from a straight musical grid.
Open Groove Template Extractor β πBPM Detector
A bounded tempo and key analyzer with selectable half/original/double BPM, segment-level stability evidence and portable JSON/CSV receipts.
Open BPM Detector β πSong Key Finder
A musical-key estimator that compares a trackβs chroma profile with major and minor key templates and returns a Camelot label.
Open Song Key Finder β πΉOnline Chord Progression Detector
A local full-file chord progression detector that estimates a changing timeline of major, minor or no-chord segments instead of returning one global song key.
Open Online Chord Progression Detector β πΈInstrument Tuner
A real-time chromatic tuner that estimates a microphone signalβs fundamental frequency and displays the nearest note and cents offset.
Open Instrument Tuner β πΌMetronome
A browser metronome with tap tempo, accents, subdivisions and common time signatures.
Open Metronome βBuild & explore sound
Map samples into an SFZ instrument, synthesize effects, create rhythms, granular textures, reactive visuals, playable boards, tone checks and low-volume masking experiments.
SFZ Sampler Builder
A browser-based instrument authoring desk that maps several local samples across MIDI key and velocity zones and packages those mappings as a playable SFZ definition.
Open SFZ Sampler Builder β βΉProcedural SFX Generator
A seeded procedural synthesizer for short impacts, lasers, risers, whooshes, interface clicks and explosions rather than a continuous test-tone or noise source.
Open Procedural SFX Generator β βEuclidean Rhythm Generator
A multi-track rhythm generator that distributes a chosen number of pulses as evenly as possible across a selected step count, then applies rotation and visible edits.
Open Euclidean Rhythm Generator β π₯Beat Maker
A 16-step browser drum machine with procedural 808/909-inspired sounds, tempo, swing and starter patterns.
Open Beat Maker β β¨Granular Synthesizer
A real-time granular instrument that slices uploaded sound into tiny grains and scatters them by position, size, density, pitch and randomness.
Open Granular Synthesizer β πMusic Visualizer
A music visualizer that maps live amplitude and frequency energy to eight visual styles and six color themes.
Open Music Visualizer β ποΈSoundboard
A customizable 19-pad soundboard for uploading or recording clips, assigning triggers and saving the board in the browser.
Open Soundboard β π«οΈNoise Generator
A local generator for white, pink, brown and green-style noise with mixing and timed playback.
Open Noise Generator β π§Binaural Beats
A stereo tone generator that places slightly different sine frequencies in the left and right channels, with optional pink noise.
Open Binaural Beats β π§Hearing Test & Tone Generator
A browser tone and frequency-sweep experiment for informally checking what you can hear through the current device and headphones.
Open Hearing Test & Tone Generator β πTinnitus Masker
An uncalibrated background-sound generator for selecting a reference pitch and mixing notched noise, pink noise or layered tones.
Open Tinnitus Masker βChoose by outcome
Every card is one direct link. The full explanations remain visible to people, search engines and answer engines.
- I want toPlan a complete DJ setDJ Set Planner analyzes a local crate one track at a time, keeps BPM, Camelot key, confidence and relative intensity editable, then builds an explainable route with handoff audition and open exports.Open DJ Set Planner
- I want toFind duplicate and near-duplicate audioAudio Duplicate Finder compares decoded identity and bounded gain- and offset-tolerant fingerprints, groups reviewable matches and exports a cleanup plan without deleting files.Open Audio Duplicate Finder
- I want toMatch loudness across several filesBatch Loudness Matcher measures every included track with one method, targets a custom value or reference track and renders exact-rate WAV files plus a delivery manifest.Open Batch Loudness Matcher
- I want toBuild a playable SFZ sampler instrumentSFZ Sampler Builder maps several local samples across key and velocity zones, exposes overlaps on a playable keyboard and packages the SFZ definition with its WAV assets.Open SFZ Sampler Builder
- I want toMap changing tempo across a performanceTempo Map Generator detects beat timing in consecutive regions, exposes editable BPM markers and exports CSV, JSON or a valid multi-tempo MIDI map.Open Tempo Map Generator
- I want toTranscribe a drum loop to MIDIDrum Loop to MIDI detects attacks, classifies kick, snare and hi-hat character, exposes editable events and exports GM drum notes.Open Drum Loop to MIDI
- I want toExtract a groove template from audioGroove Template Extractor detects percussive onsets, resolves their signed offset and velocity against the chosen subdivision and exports CSV, JSON or valid MIDI.Open Groove Template Extractor
- I want toExtract automation from audioAudio Envelope Extractor scans RMS, peak or absolute amplitude on a selected channel path, smooths the curve and exports time/value points as CSV, JSON or valid MIDI CC.Open Audio Envelope Extractor
- I want toHumanize an existing MIDI performanceMIDI Humanizer imports note events, applies bounded seeded timing, velocity, gate, swing and partial quantization, then exports a valid transformed MIDI file.Open MIDI Humanizer
- I want toSynthesize a sound effectProcedural SFX Generator creates editable impacts, lasers, risers, whooshes, UI clicks and explosions from tone, noise, envelope, distortion and a repeatable seed.Open Procedural SFX Generator
- I want toQuality-check an album batchAlbum Loudness Analyzer measures every selected track consistently, compares level and stereo metrics, flags outliers and exports an ordered QC report.Open Album Loudness Analyzer
- I want toGenerate an evenly distributed rhythmEuclidean Rhythm Generator resolves pulses, steps and rotation across four independent tracks, then exports the deterministic pattern as MIDI, audio or JSON.Open Euclidean Rhythm Generator
- I want toBlind-test two versionsABX Audio Test keeps A and B synchronized, hides X until the answer and reports a repeatable trial score without claiming which version is better.Open ABX Audio Test & Comparator
- I want toAlign and null two rendersAudio Difference Checker estimates bounded offset, polarity and gain mismatch, then exposes the residual Difference signal and comparison report.Open Audio Difference Checker
- I want toInspect waveform shape liveAudio Oscilloscope shows a triggered time-domain trace from a file, microphone or reference tone with timebase, channel and cursor controls.Open Online Audio Oscilloscope
- I want toSet microphone headroomMicrophone Level Meter shows live RMS, peak, peak hold and clipping in relative dBFS; it does not pretend to measure calibrated room loudness.Open Microphone Level Meter
- I want toMeasure a fileAudio File Analyzer reports peak, RMS, crest factor, clipping, silence, DC offset and a bounded dominant-frequency estimate.Open Audio File Analyzer
- I want toCheck stereo and monoStereo Phase Checker scans correlation, negative windows, mid/side balance and the decoded PCM mono fold-down.Open Stereo Phase & Mono Compatibility Checker
- I want toCreate new audioBeat Maker sequences procedural drums, while Granular resynthesizes an uploaded sample into evolving textures.Open Beat Maker
- I want toCheck a live sourceTuner estimates a single note from the microphone; hearing and tinnitus pages are uncalibrated sound experiments only.Open Instrument Tuner
- I want toMap harmony over timeChord Progression Detector estimates editable major/minor/no-chord segments with confidence and time-coded exports.Open Online Chord Progression Detector
- I want toGenerate a chord progressionChord Progression Generator resolves Roman numerals in a selected key, arranges voicings and exports playable audio plus real MIDI.Open Chord Progression Generator & MIDI Maker
- I want toWrite an editable melodyMelody Generator turns key, scale, contour, range and rhythmic choices into a seeded monophonic sequence you can edit and export.Open Melody Generator & MIDI Maker
- I want toBuild a playable basslineBassline Generator anchors a low-register groove to editable chord roots with style, swing, gate, velocity and rest controls.Open Bassline Generator & MIDI Maker
- I want toTurn chords into an arpeggioOnline Arpeggiator orders editable chord tones across octaves and rates, then exports the exact step pattern as MIDI or audio.Open Online Arpeggiator & MIDI Export
- I want toMove a melody into a DAWAudio to MIDI converts a clear monophonic line into editable notes, procedural playback and a Standard MIDI File.Open voice-to-instrument
- I want toCheck tempo variants and stabilityBPM Detector presents half/original/double interpretations, segment evidence and exportable analysis instead of hiding octave-like tempo ambiguity.Open BPM Detector
Useful browser-audio workflows
- Blind-check a processing choice
- Loudness Normalizer β ABX Audio Test & Comparator β Stereo Phase & Mono Compatibility Checker
- Null-check two mix revisions
- Audio Difference Checker β Audio File Analyzer β ABX Audio Test & Comparator
- Inspect a live input
- Microphone Level Meter β Online Audio Oscilloscope β Instrument Tuner
- Trace one signal three ways
- Online Audio Oscilloscope β Audio Waveform Generator β Spectrogram Analyzer
- Plan and prepare a DJ set
- DJ Set Planner β DJ Transition Maker β Loudness Normalizer
- Build a sound from scratch
- Beat Maker β Granular Synthesizer β BalanceDAW
- Document a recording
- Audio File Analyzer β Audio Waveform Generator β Spectrogram Analyzer
- Diagnose a stereo mix
- Audio File Analyzer β Stereo Phase & Mono Compatibility Checker β Spectrogram Analyzer
- Transcribe melody and harmony
- Audio to MIDI & Voice to Instrument β Online Chord Progression Detector β BalanceDAW
- Sketch harmony for a DAW
- Song Key Finder β Chord Progression Generator & MIDI Maker β BalanceDAW
- Write melody, bass and movement
- Melody Generator & MIDI Maker β Bassline Generator & MIDI Maker β Online Arpeggiator & MIDI Export
- Turn harmony into playable parts
- Chord Progression Generator & MIDI Maker β Online Arpeggiator & MIDI Export β Bassline Generator & MIDI Maker
- Measure and prepare a tempo edit
- BPM Detector β Tempo Changer β Audio File Analyzer
- Generate a rotating percussion idea
- Euclidean Rhythm Generator β Beat Maker β BalanceDAW
- Create and organize game SFX
- Procedural SFX Generator β Sample Pack Builder β Soundboard
- Quality-check an album delivery
- Album Loudness Analyzer β Loudness Normalizer β Mastering Studio
- Match a podcast or playlist batch
- Album Loudness Analyzer β Batch Loudness Matcher β Metadata Editor
- Humanize a generated MIDI part
- Melody Generator & MIDI Maker β MIDI Humanizer β BalanceDAW
- Drive MIDI CC from recorded dynamics
- Audio Envelope Extractor β MIDI Humanizer β BalanceDAW
- Capture a live groove for a DAW
- Groove Template Extractor β MIDI Humanizer β BalanceDAW
- Conform a DAW grid to live tempo
- Tempo Map Generator β Groove Template Extractor β BalanceDAW
- Rebuild a drum loop as MIDI
- Drum Loop to MIDI β Groove Template Extractor β Beat Maker
- Build and package a sampled instrument
- SFZ Sampler Builder β Sample Pack Builder β Song Key Finder
- Clean and document an audio archive
- Audio Duplicate Finder β Audio File Analyzer β BWF Metadata Editor
Limits and privacy
Core browser DSP keeps selected audio on the device and avoids an upload queue. Optional model-based or system-speech modes are disclosed on their own pages. Practical limits come from decoded duration, channel count, algorithm memory and the current device; compressed audio can expand substantially in memory.