How to Make AT3 Files Loop

AT3 files are audio files that play music on Sony devices, like the PlayStation Portable and Sony MP3 players. The AT3 file is created with Sony's Adaptive Transform Acoustic Coding 3, also called ATRAC3. AT3 file types are often used in video games for the PSP. If you want to create your own looping AT3 file you can use Sony’s Sound Forge software. Other types of audio software don’t allow the looping or creation of AT3 files.

Things You'll Need

• Sony Sound Forge

Instructions

1. Open Sound Forge and select “File.” Click “Open” to open your sound file in Sound Forge.

2. Select “Copy” from the Edit menu. Click “New” in the File menu and select “Paste” from the Edit menu to paste your audio into the Sound Forge file.

3. Select “Save” and choose “wav” as the audio format. Click “Custom Format” and select “ATRAC3.” Select “Save.”

4. Drag your mouse over the sections of audio you want to loop to select them. Click “Special” and choose “Insert Sample Loop.”

5. Click “Indefinite Loop” and click “OK.” Select “Save.”

References

• File Info: .AT3 File Extension
• "Sony Sound Forge Pro 10 Help;" Sony; n.d.