Audio Editor

The file opens in the same studio player as ToolBuddy's other audio tools: one waveform lane per channel, a time ruler, zoom with an overview, and a level meter and spectrum while it plays. Drag to select a range, drag its handles to adjust it, or type an exact start and end.

The keyboard covers playback: Space plays, the arrows move the playhead, [ and ] (or I and O) set the selection at the playhead, and L loops it.

Cut, copy, paste, silence, trim and insert silence work on the selection, and every step can be undone. Selection edges snap to the nearest zero crossing, so a cut does not leave the step in the waveform that is heard as a click.

Press M to drop a marker at the playhead, then comma and period to jump between markers; with Shift, the selection runs to the marker. Seamless loop crossfades the end of the selection into its start, for game music, video beds and sound effects that repeat without a gap.

The Effects tab holds gain, fade in and out, normalize, a compressor, a hard limiter, graphic and parametric EQ with a response curve, noise reduction, remove silence, change speed, delay, reverb, distortion, reverse and invert, each with its own named controls, plus presets for the compressor, reverb, delay and graphic EQ.

Preview plays the selection with the effect before anything changes; Apply makes it part of the edit, and Cmd or Ctrl+Z takes it back.

The Export tab sets the format (MP3, WAV and FLAC everywhere, M4A, AAC and OGG where supported), the bitrate, the channel layout (as the source, mono or stereo) and the bit depth, and can export only the selection.

Select a folder to edit several files in turn: each file keeps its own edits while you switch between them. The Tools tab adds a tap tempo, a metronome and a tag reader.

For a single cut, the Audio Trimmer is quicker; to join several files, use the Audio Joiner. To level loudness to a target, use the Audio Normalizer, and to remove pauses or background noise across a whole file, the Silence Remover and the Noise Remover.

To change only the format, the Audio Converter handles many files at once, and the Audio Compressor makes them smaller.