A native, cross-platform waveform audio editor written in Rust. The workspace follows the layout of a professional waveform editor: menu bar, toolbar, Files / Effects / Markers panel on the left, the editor in the centre, Selection/View and History on the right, transport and level meters along the bottom. It runs on Windows, macOS and Linux from one codebase.
Audemo is an independent project and is not affiliated with Adobe.
The interface uses Adobe's open-source Source Sans 3 and Source Code Pro typefaces, bundled under the SIL Open Font License (see assets/fonts/).
- Open WAV, AIFF, FLAC, MP3, OGG/Vorbis, M4A/AAC, ALAC, CAF and MKV/WebM audio (drag files onto the window, or pass them on the command line).
- Save as WAV (16/24/32-bit integer or 32-bit float), FLAC (16/24-bit, lossless), MP3 (32–320 kbps CBR or V0–V9 VBR, via LAME) or AAC in M4A (64–320 kbps, via Fraunhofer FDK AAC), with optional TPDF dither. Saving runs in the background with a progress bar and Cancel, and writes to a temporary file first so a failed save never damages the original. MP3 and M4A files are gapless (encoder delay and padding are recorded and removed on open).
- Plug-ins: VST3 effects on Windows, macOS and Linux, and Audio Units on macOS, from Effects > Audio Units / VST 3 and in every effects rack (waveform rack, track, bus and master racks), batch processing and previews. Effects > Audio Plug-In Manager scans the standard folders (plus any you add) in a separate process, so a plug-in that crashes is listed instead of closing Audemo, and lets you enable or disable each one. Each plug-in's effect window shows its parameters, and Show Plug-In Window opens the plug-in's own interface (Windows and macOS). Plug-in settings are saved with sessions and rack slots; a session whose plug-in isn't installed keeps the slot and its settings and passes audio through until it's available. Plug-in latency is compensated when applying effects.
- Metadata panel: title, artist, album, album artist, genre, year, track number, composer, comment and copyright, read from and written to every format (RIFF INFO, ID3v2, Vorbis comments, iTunes tags). WAV files also keep their markers as cue points.
- Workspace laid out like Audition's default: Files / Favorites, then Media Browser / Effects Rack / Markers / Properties, then History down the left; the Editor in the centre with its transport bar; Levels / Frequency Analysis / Phase Meter and Selection/View along the bottom; History / Match Loudness at the bottom left. Panel groups resize, and Window > Workspace > Reset to Default restores the layout.
- Multitrack editor (toolbar Multitrack, or 0): sessions of tracks with volume, pan, mute, solo and record-arm; drag files from the Files panel (or the desktop) onto tracks; move clips between tracks, trim their edges, drag fade handles, set clip gain, split at the playhead (Ctrl+K), with snapping to clip edges, the cursor and the selection. The mix plays live as you edit. Arm a track and record onto it while the other tracks play. Volume and pan automation: press A on a track to show its yellow (volume) and blue (pan) lines; drag or double-click a line to add points, drag points, double-click one to delete it, right-click to clear. Overlapping clips on a track crossfade automatically (equal-power). Peak meters on every track. Recording latency compensation (Preferences) lines overdubs up with what you heard. Track effects racks: every track, bus and the master has a 16-slot rack of real-time effects (EQs and filters, compressors, limiter, gate, de-esser, delay, echo, chorus/flanger, reverb, distortion, stereo tools), edited in the Effects Rack panel and heard live as the session plays. Bus tracks (Alt+B) take tracks routed to them (Out) and sends (pre- or post-fader) and have their own rack and fader. A Mixer view with faders, pan, meters, sends, output routing and rack access for every track, bus and the master. Mixdown Session to New File (entire session or time selection). Clips stay linked to their files, so edits made in the Waveform editor (double-click a clip) are heard in the session. Sessions save as
.audemofiles, with any unsaved audio written to a folder beside them. - Waveform editor with an overview/zoom navigator, time ruler, per-channel lanes, amplitude ruler in dB, sample-level zoom and channel enable toggles (edit L or R only).
- Spectral frequency display (Shift+D) shown under the waveform, with spectral editing: Marquee (E), Lasso (D) and Paintbrush (P) tools select an area of time × frequency; any effect then changes only that area, Delete silences it, and Auto Heal (Ctrl+U) rebuilds it from the sound around it. The Spot Healing Brush (B) repairs whatever you paint over (clicks, coughs, chair squeaks, phone beeps) as soon as you let go.
- Diagnostics panel: scan a file or selection for clicks, clipping, silence or audio; jump to each finding, then Repair, Delete or Mark one or all.
- Batch Process panel: run the Effects Rack chain, Match Loudness or a Favorite over a list of files and save them as WAV, FLAC, MP3 or AAC (sample rate, folder, name suffix; tags and markers carried over), never overwriting anything.
- Edit: cut, copy, paste, paste to new, delete, crop, select all, convert sample rate and channel count.
- Unlimited-style history: 60-step undo/redo plus a History panel you can click to jump to any state.
- Fade handles in the top corners of the waveform and a floating clip gain control.
- Markers (M), with rename, jump and delete in the Markers panel.
- Playback through the system output (WASAPI, CoreAudio, ALSA/PulseAudio/PipeWire), looping, monitor volume, peak meters with hold and clip indicator.
- Recording (Shift+Space) with the waveform drawn live as it records; Stop or Space ends it. Records into the selection or at the cursor, or into a new file if none is open.
- Preferences (Edit > Preferences, Ctrl+, / ⌘,) with Audition's 17 pages: General (startup, tool tips, zoom factors, auto-scroll), Appearance (presets, element colours with hue/saturation, brightness from darkest to light, gradients, interface scale), Audio Channel Mapping (which device channels Audemo's L/R play and record on), Audio Hardware (device class/audio API, input and output devices, I/O buffer size, sample rate, force hardware to the file's sample rate, system audio settings), Auto Save (timed backups of sessions and edited files, how many to keep, where), Data (dither default, smoothing delete/cut and paste boundaries, sample rate conversion quality), Effects (open plug-in windows automatically, scan at startup), Markers & Metadata, Memory (installed RAM, undo levels), Multitrack (pan mode: L/R cut or equal power; recording latency), Multitrack Clips (automatic crossfades and their curve, default clip fades, clip names), Playback and Recording (return playhead on stop, follow, pre-roll/post-roll for View > Play with Pre-roll and Post-roll, Alt+Space), Spectral Displays (window function, resolution, decibel range, logarithmic frequency scale) and Time Display (decimal, CD 75 fps, SMPTE 30/29.97 drop/29.97/25/24, samples, bars and beats, custom fps). Control Surface, Media & Disk Cache and Video are there too, saying what Audemo does instead.
- Real-time Effects Rack: chain up to 16 effects with power switches, reordering, input/output gain and dry/wet mix. With the rack's master power on, normal playback (Space, looping, seeking) is heard through the chain as you adjust it; Apply renders it into the file.
- Analysis: Frequency Analysis (live FFT at the playhead, 1k–32k sizes, scan-selection average, hover readout), Phase Meter (goniometer and correlation), and Window > Amplitude Statistics (peak, true peak, RMS, clipping, DC offset, integrated loudness and loudness range).
- Match Loudness panel: measure integrated loudness (ITU-R BS.1770 / EBU R128), true peak and LRA for open files and match them to EBU R128, ATSC A/85, podcast or streaming targets in one run.
- Media Browser to navigate folders, audition files with Auto-Play and double-click to open; Favorites panel; Properties panel with peak and RMS.
- File and Edit menus with Open Append, Open Recent, Close All, Save Selection As, Save All, Copy to New, Mix Paste (insert / overlap / overwrite / modulate) and Repeat Previous Command.
- Effect windows with presets, live looping preview (Space) and bypass, plus a draggable frequency-response curve for the EQs and filters.
- Favorites menu for one-click common jobs.
| Menu | Effects |
|---|---|
| Effects | Invert, Reverse, Silence |
| Amplitude and Compression | Amplify, Normalize, Fade In, Fade Out, Dynamics Processing, Hard Limiter, Single-band Compressor, Tube-modeled Compressor, Multiband Compressor, DeEsser, DC Offset Correction, Match Loudness, Noise Gate, Speech Volume Leveler |
| Delay and Echo | Delay, Echo (with ping-pong), Analog Delay (tape / tube / BBD), Multitap Delay |
| Filter and EQ | Parametric Equalizer (5 bands + cut filters), Graphic Equalizer (10, 20 and 30 bands), Notch Filter, Scientific Filter (Butterworth LP/HP/BP/BS, up to 8-pole) |
| Modulation | Chorus, Flanger, Chorus/Flanger, Phaser |
| Noise Reduction / Restoration | Capture Noise Print, Noise Reduction (process), Adaptive Noise Reduction, DeHummer (50/60 Hz + harmonics), Click/Pop Eliminator, DeClipper, Hiss Reduction, Delete Silence |
| Reverb | Studio Reverb (algorithmic), Full Reverb (convolution with a synthesised impulse response) |
| Special | Distortion (soft/hard/tube/foldback/bit-crush), Doppler Shifter, Guitar Suite, Mastering, Vocal Enhancer |
| Stereo Imagery | Channel Mixer, Stereo Expander, Centre Channel Extractor, Automatic Phase Correction, Pan |
| Time and Pitch | Stretch and Pitch (phase vocoder with phase locking), Pitch Shifter, Varispeed |
| Generate | Tones (sine/square/triangle/saw, sweeps), Noise (white/pink/brown), DTMF Tones, Silence |
All processing is 32-bit float. Effects run on a background thread, so the window stays responsive on long files.
- Select a stretch of audio that contains only the noise.
- Effects > Noise Reduction / Restoration > Capture Noise Print (Shift+P).
- Select the audio to clean (or nothing, for the whole file) and open Noise Reduction (process).
- Preview, adjust Noise reduction and Reduce by, then Apply.
| Action | Keys |
|---|---|
| Play / stop | Space |
| Record (Stop or Space ends it) | Shift+Space |
| Undo / redo | Ctrl+Z / Ctrl+Shift+Z (Ctrl+Y) |
| Cut / copy / paste | Ctrl+X / Ctrl+C / Ctrl+V |
| Copy to New / Paste to New | Alt+Shift+C / Ctrl+Alt+V |
| Mix Paste | Ctrl+Shift+V |
| Repeat previous command | Shift+R |
| Delete / crop | Delete / Ctrl+T |
| Select all / deselect | Ctrl+A / Esc |
| Add marker / previous / next | M / ← / → |
| Zoom in / out / full | = / - / \ |
| Zoom time at pointer | Mouse wheel |
| Scroll | Shift+wheel, middle-drag, or the Hand tool |
| Zoom amplitude | Alt+wheel |
| Spectral display | Shift+D |
| Capture noise print | Shift+P |
| Tools: Time Selection / Hand / Marquee / Lasso / Paintbrush / Spot Healing | T / H / E / D / P / B |
| Auto Heal spectral selection | Ctrl+U |
| New multitrack session / new audio file | Ctrl+N / Ctrl+Shift+N |
| Waveform / Multitrack editor | 9 / 0 |
| Add audio track / bus track (Multitrack) | Alt+A / Alt+B |
| Split clip at playhead (Multitrack) | Ctrl+K |
| Snap off while dragging clips | hold Alt |
| Scroll tracks | wheel over the track headers, or Alt+wheel |
| Show automation (Multitrack) | A on the track header |
| Add / delete automation point | double-click the line / double-click the point |
| Shape a fade | drag the fade handle up (fast rise) or down (slow rise); hold Ctrl (⌘) for a cosine S-curve |
On macOS use ⌘ instead of Ctrl.
Install Rust (stable, 1.80 or newer) from https://rustup.rs, then:
cargo run --release # build and launch
cargo run --release -- file.wav # open a file at start-up
cargo test --release # DSP and editing testsThe binary is target/release/audemo (audemo.exe on Windows).
Windows needs nothing extra (MSVC toolchain from the Visual Studio Build Tools, which rustup prompts for).
macOS needs the Xcode command line tools (xcode-select --install). To build an .app bundle with the microphone permission prompt, follow the macOS steps in .github/workflows/build.yml. The CI build is ad-hoc signed but not notarised, so the first launch needs right-click > Open (or xattr -dr com.apple.quarantine Audemo.app).
Linux (Debian/Ubuntu package names):
sudo apt install build-essential pkg-config libasound2-dev libxkbcommon-dev libwayland-dev \
libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev libgtk-3-devFedora: sudo dnf install alsa-lib-devel libxkbcommon-devel wayland-devel gtk3-devel.
Open/save dialogs use the XDG desktop portal, which every mainstream desktop provides.
Push the repository to GitHub. The workflow in .github/workflows/build.yml runs the tests and builds,
for every push:
| Platform | Installer | Portable |
|---|---|---|
| Windows | Audemo-<version>-x64.msi (Program Files, Start menu entry, uninstall from Settings > Apps) |
audemo-windows-x64-portable.zip |
| macOS | Audemo.dmg (drag to Applications; universal Apple silicon + Intel) |
audemo-macos-universal.zip |
| Linux | audemo_<version>_amd64.deb (sudo apt install ./audemo_*.deb) and Audemo-x86_64.AppImage |
audemo-linux-x64.tar.gz |
Download them from the run's Artifacts section on the Actions tab. Push a tag such as v0.1.0 to
publish them on a GitHub Release instead.
To package locally: bash scripts/package-macos.sh on a Mac, or cargo build --release && bash scripts/package-linux.sh
on Linux. The Windows MSI needs the WiX v5 CLI (dotnet tool install --global wix --version 5.0.2); see the
Windows step in the workflow for the exact command.
The installers are not code-signed. Windows SmartScreen will warn on first run (More info > Run anyway), and on macOS right-click the app and choose Open the first time.
src/
main.rs window setup and panel layout
app.rs documents, undo history, actions, background jobs
editor.rs waveform / spectral editor, selection, fades, gain HUD
panels.rs menus, toolbar, docked panel layout, transport, levels, status bar
workspace.rs Favorites, Media Browser, Effects Rack and Properties panels
analysis_ui.rs Frequency Analysis, Phase Meter, Match Loudness, Amplitude Statistics
liverack.rs real-time Effects Rack renderer (and the shared stream renderer)
tools_ui.rs Diagnostics and Batch Process panels
dsp/spectral.rs spectral selections: masks, apply-inside-selection, healing
dsp/effects/diagnose.rs click / clipping / silence / audio detection and repair
dsp/effects/rt.rs streaming versions of 24 effects for track, bus and master racks
session.rs multitrack sessions: tracks, clips, mixing, undo, .audemo files
mt_ui.rs Multitrack editor, Mixer, recording to tracks, mixdown
prefs.rs saved preferences (every setting, key=value file)
prefs_ui.rs the Preferences window
autosave.rs timed backups (Preferences > Auto Save)
dialogs.rs effect windows (presets, preview, EQ curve) and other dialogs
engine.rs cpal playback and recording
io.rs symphonia decoding, tags, markers, MP4 edit lists
export/ WAV, FLAC (own encoder), MP3 (LAME) and M4A (FDK AAC) writers; tags
plugin/ VST3 host (interfaces written from the MIT-licensed SDK headers), Audio Units
(macOS), plug-in windows, scanning, the Plug-In Manager's registry
theme.rs palette and hand-drawn transport icons
assets/ app icon, macOS Info.plist, Linux .desktop file, WiX installer source
scripts/ macOS and Linux packaging scripts
dsp/ dependency-free DSP: FFT, biquads, STFT, resampler,
peak cache, spectrogram, loudness (BS.1770), analysis
and every effect (+ tests)
Adding an effect means writing one fn(&[Vec<f32>], &Ctx, &Params) -> Result<Vec<Vec<f32>>, String>
and registering it with its parameters in src/dsp/effects/; the menu entry, dialog, presets and
preview are generated from that definition.
Recording fixes, Audio Hardware preferences, Audition workspace layout(done)Real-time Effects Rack, remaining Audition effects, Match Loudness, analysis panels(done)- Multitrack sessions:
tracks, clips, Mixer, mixdown, recording(0.6),automation, crossfades, track meters, latency compensation(0.6.5),track/bus/master effects racks, bus tracks, sends(0.7) — done Spectral selection/healing tools, Diagnostics panel, batch processing(0.8)MP3/FLAC/AAC export, metadata(0.9),VST3 and Audio Unit plug-in hosting(0.10)
The VST3 interface definitions are written from Steinberg's VST3 SDK headers, which are MIT-licensed. VST is a registered trademark of Steinberg Media Technologies GmbH.
MP3 encoding uses LAME (LGPL 2.0) and AAC encoding uses the
Fraunhofer FDK AAC library (FDK AAC
licence), both compiled from source into the binary through the mp3lame-encoder and fdk-aac
crates. The FLAC encoder is Audemo's own. Decoding uses Symphonia (MPL 2.0).