Maronaskar Windows / macOS / Linux
Delivering hundreds of sound effects means checking every file for level and format — one at a time, that does not scale.
a9a lists waveform, loudness, true peak, LRA, crest factor, sample rate, bit depth, and channel count together, so inconsistency is visible at a glance.
Select files and apply loudness, target peak, and fade adjustments in one pass. The GUI and the CLI run the same processing, so the same workflow covers single-file checks and large batches alike.
Key Features
Waveform, loudness, true peak, LRA, crest factor, sample rate, bit depth, channel count, and length are listed as columns. Loop, fade, and trim state appear as icons, so files still missing those settings are easy to spot.
Loudness, target peak, and fade settings can be applied to the selected files or to every file loaded. Values you use often can be saved as named presets and recalled in one step.
Set a target integrated loudness and a true peak ceiling, and bring the files in line with it. Enable the true peak limiter to reach the target while keeping peaks under the ceiling.
Choose a curve and a length to remove clicks at the start and end of playback.
Select a range on the waveform and keep only that part, cutting away everything before and after it. Trimming is non-destructive, never touches the source file, and can be cleared at any time.
Set loop start and end positions, snap them to nearby zero crossings, and export with loop metadata so BGM and ambience repeat seamlessly.
Choose WAV, FLAC, AIFF, Ogg Vorbis, MP3, or AAC, and set sample rate and bit depth on export, bringing mismatched source material in line with a delivery spec.
The steps confirmed in the GUI run identically from the CLI. Processing can be written to a TOML job file and dropped into a batch or build step.
Requirements
On Linux, only the CLI is available.
The main GUI window for checking, adjusting, and exporting audio files.
