Audio Editor Online - User Guide
A multitrack audio editor (sequencer) with 6 independent tracks, a mixer, a master equalizer, a maximizer, and an individual effects chain on each track. All processing happens directly in your browser.
Tracks and Loading Audio
The editor has 6 tracks. Each track has: a name (double-click to rename), "Mute" and "Solo" (S) buttons, an "FX" (effects) button, a record "●" button, and a volume control (from -100 to +10 dB) with a numeric field. To load audio, drag files onto a track or click "Choose file" (you can select multiple files at once; supported formats include MP3, WAV, FLAC, M4A, AAC, OGG and others). Each loaded file becomes a separate clip on the track's timeline.
Transport, Tempo and Ruler
The "Play" / "Pause" / "Stop" buttons control playback of the whole project. The "Bpm" field (40-300) sets the project tempo - it's used for grid snapping and for syncing the delay. Clicking anywhere on the bar ruler above the timeline moves the playback cursor to that point - this is the only way to seek in the editor. The ruler also shows the save zone (export range) with two triangular markers - drag them to set the start and end of the section that will be saved to the file.
Recording
To record audio from your microphone, click "●" on the desired track - the track switches to record mode (armed). Then click the main record "●" button on the transport bar - recording starts, and the other tracks play back at the same time from the current cursor position (for recording over a backing track). The recorded fragment is added to the track as a new clip.
Cursor and Scissors Tools, Grid Snapping
The "Cursor" tool (default) - select and move clips. The "Scissors" tool - clicking a clip splits it at that point into two separate clips. The magnet "Snap to grid" button turns snapping on or off; next to it a menu opens with the grid step - 1/1, 1/2, 1/4, 1/8 or 1/16 of a beat (calculated from the BPM). When snapping is enabled, moving and trimming clips, fades, splits and save-zone markers all "snap" to the grid.
Working with Clips
- Selection - clicking a clip selects it; Ctrl/Cmd+click adds or removes a clip from a multi-selection (selected clips are highlighted in blue).
- Moving - dragging a clip (or a group of selected clips) changes its position in time. If all selected clips are on the same track, they can also be dragged to a different track; a group with clips on different tracks can only be moved in time.
- Trimming - drag the left or right edge of a clip to shorten or lengthen it within the original recording.
- Fades - triangular markers in the top corners of a clip set the fade-in and fade-out of the volume.
- Clip volume - the square marker and horizontal line across the top center of a clip - dragging it changes the clip's own volume separately from the track volume.
- Splitting - "Scissors" tool: clicking a clip splits it into two clips at the click point.
- Deleting - select clip(s) and press Delete or Backspace.
- Copy and paste - Ctrl/Cmd+C copies the active clip, Ctrl/Cmd+V pastes a copy.
- Undo and redo - the ↺ / ↻ buttons in the left panel undo and redo any clip changes (moving, trimming, fades, volume, splitting, deleting, pasting, moving to another track).
Mixer
The "Mixer" button opens a panel with a vertical volume fader (from -100 to +10 dB with a numeric field) and a pan control for each of the 6 tracks, "Mute" and "Solo" (S) buttons, a signal level meter, and a separate master channel (fader and pan for the overall bus).
Master Equalizer (Master EQ)
The "Master EQ" button opens an 18-band graphic equalizer at fixed frequencies from 20 Hz to 20 kHz. Each band is adjusted with a vertical fader within a ±12 dB range; double-click a fader to reset the band to 0 dB. The power button switches the entire master equalizer on and off (bypass).
Maximizer
The "Maximizer" button opens master bus processing with three parameters: "Loudness" (overall level, 0-100), "Character" (compression style, 0-100) and "Ceiling" (maximum level in dBTP, from -6.0 to 0.0).
Track Effects (FX)
The "FX" button on a track opens a modal window with a chain of 6 plugins: Gate, Channel EQ, Compressor, Vocal, Delay and Reverb. Plugins can be dragged in the list to change their processing order in the chain. Each plugin has its own power button - it can be switched on and off independently of the others.
- Gate - Threshold, Range (attenuation depth), Attack and Release parameters - attenuates the signal below the threshold.
- Channel EQ - a high-pass filter (HPF), 4 parametric bands (Peak / L-Shelf / H-Shelf type, frequency, gain, Q) and a low-pass filter (LPF).
- Compressor - Threshold, Ratio, Attack, Release, Makeup (with an Auto mode), a Knee switch (hard/soft) and Lookahead.
- Vocal - 4 independent modules, each with its own switch and Amount control: De-esser (cuts sibilance), Exciter (adds harmonics), Saturation (warm overdrive) and Air (boosts high frequencies).
- Delay - delay time (manual or tempo-synced to note values 1/4, 1/8, 1/16, 1/4., 1/8., 1/4T, 1/8T), Feedback, Filter, Mix and Normal / Ping-pong mode.
- Reverb - Pre-Delay, Decay, Size, Damp, Mix, room type (Hall / Plate / Room) and tone (Bright / Normal / Dark).
Zoom, Scrolling and Saving the Result
The "+" and "−" buttons at the bottom right change the timeline's horizontal zoom (the label shows the current multiplier, e.g. x1, x2). The scrollbar at the bottom left lets you move around the project. The "Download as WAV" and "Download as MP3" buttons at the top save the section of the project defined by the save zone on the ruler, with all track effects, the mixer, the master equalizer and the maximizer applied.
Keyboard Shortcuts
- Space - play / stop
- Delete / Backspace - delete the selected clip
- Ctrl/Cmd + click on a clip - add or remove a clip from a multi-selection
- Ctrl/Cmd + C - copy the active clip
- Ctrl/Cmd + V - paste the copied clip
- Enter - confirm the new track name while renaming
- Esc - cancel renaming a track
Keyboard shortcuts work while the "Audio Editor Online" tab is open and focus is not in a text field.