Editing software for Mac that will help you deal with popular audio file formats

Fission for Mac

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Fission for Mac

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With Fission for Mac, audio editing is no longer a chore. You can join files, crop and trim audio, and rapidly split up long files.

The tool is streamlined for fast editing, and it works without the quality loss other audio editors cause.

If you need to convert between audio formats, Fission for macOS can do that too. Rapidly export or batch convert files to the MP3, AAC, Apple Lossless, FLAC, AIFF, and WAV formats.

The app has all your audio needs covered. Finally, simple audio editing has arrived.

Features and Highlights

Fade, Cut, Crop & Edit Metadata
Fission offers all the standard audio editing options you need right at your fingertips. Unlike overly complicated competitors, there's no clutter or bloat.

Edit Audio with No Quality Loss
The tool never causes quality loss when it edits, even with the MP3 and AAC formats. It's like magic, and it's something only Fission offers!

Batch Convert Between Formats
The app's batch convertor lets you convert dozens of files at once, to any of the most popular formats: MP3, AAC, Apple Lossless, FLAC, AIFF, and WAV.

Cross-Format Conversions
Any file the app can open can be saved directly to MP3, AAC, Apple Lossless, FLAC, AIFF, or WAV.

Chapterized AAC & MP3 Files
Make enhanced podcasts with AAC or MP3 chapters using the app. Your listeners will love you for it!

Quick Audio Removal
Cutting out audio couldn't be easier. Just select and cut!

Full FLAC Support
If you need to edit FLAC files, look no further than the tool.

Crop It Out
Got a small portion of audio to save? Highlight it, click Crop and you're done.

File Joining
With a simple drag and drop or copy and paste, you can join two or more files into one.

Smart Split
Automatically split files based on silence. It's perfect for LP and DVD recordings.

Inline Gain Adjustment
Highlight a section of audio then adjust the gain with the Gain slider.

Cue Sheet Support
Split files using cue sheets, or export your edits to a cue sheet file.

Fade Away
Fade audio in and out to create pleasing transitions.

Why Be Normal?
Give audio files a constant volume level with the Normalize function.

Split Points
With the app's Split Points, you can split and save to get multiple files.

How to Use
  • Import an audio file
  • Use the selection tool to highlight audio
  • Apply edits like cut, crop, fade, or normalize
  • Adjust gain if needed
  • Use Smart Split to divide audio by silence
  • Join files by dragging and dropping
  • Edit metadata as required
  • Preview the edited audio
  • Export the file in desired format
System Requirements

macOS 11 (Big Sur) to macOS 15 (Sequoia)

PROS
  • Lossless audio editing
  • User-friendly interface
  • Supports multiple formats
  • Batch conversion feature
  • Smart Split functionality
CONS
  • Limited zoom for precision edits
  • No multi-track editing
  • Basic effects options
  • No support for VST/AU plugins
  • Occasional stability issues
Note: In the demo version, the quality of audio files saved with Fission will be degraded with a series of random audio fades.

Download Fission for Mac Latest Version
Why is this app published on FileHorse? (More info)

  • Fission 2.9.5 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    Fission 2.9.5 Screenshot 1
  • Fission 2.9.5 Screenshot 2
  • Fission 2.9.5 Screenshot 3

What's new in this version:

Preliminary Support for MacOS 27 (Golden Gate) Betas:
- Fission no longer warns on launch when run on MacOS 27 (Golden Gate). There are no known issues on Golden Gate at present.
- Do note that Apple’s betas remain in flux. We always encourage users to stick with official (non-beta) OS releases for the best experience.

Adjust Gain by Scrolling:
- When audio is selected in Fission, option-scrolling now acts just like the gain slider, adjusting the gain up or down. When these adjustments are in progress, the gain slider’s “dB” indicator will be highlighted.

Unobtrusive Update Notifications:
- Fission’s software update notifications have been modified to be less obtrusive, in the hopes of avoiding disruptions. When the timed automated check detects a newer version, it will no longer pop a dialog in front of your work. Instead, a small “Update Available” indicator will appear in Fission’s file windows, as well as the Start window. This change makes it easier for you to control when you update to newer versions.
- The backend `ffmpeg` component, used to handle importing audio, has been updated from a very old version 2.6.2 to version 8.1.2, to ensure outstanding flaws and bugs are addressed.
- Minor updates have been made to cue sheets. Saving a cue sheet will now just save the cue sheet, without requiring the entire audio file to be written as well. In addition, Fission also now uses REM GENRE for the genre field (but will read both GENRE and REM GENRE).
- Focusing on text labels in the “Summary” tab no longer incorrectly prevents keyboard-based control over audio playback.

Easier Access to Test Releases:
- It’s now easier to be notified about pre-release versions of Fission. In the “Settings” window, you can adjust the new “Check for” menu from its default “Official Releases” option to “Official and Test Releases”. More details on test releases can be found in this support article.
- This setting was previously found in the app’s hidden “Debugging” window. It has now been promoted to the main interface.

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