Convert AT3 to FRG

Understanding AT3 and FRG file formats

AT3 files are audio files encoded using the ATRAC3 codec, developed by Sony. These files are commonly found in PlayStation Portable (PSP) games and other Sony devices, offering efficient compression for high-quality audio playback.

FRG files, on the other hand, are less common and can refer to various proprietary formats depending on the software or device. In some contexts, FRG files are used for audio or soundbank data in specific games or applications, often as a container for sound effects or music.

How to convert AT3 to FRG

Direct conversion from AT3 to FRG is not widely supported due to the proprietary nature of both formats. Typically, the process involves two steps:

1. Extract and decode the AT3 file to a common audio format such as WAV or MP3.
2. Re-encode or package the audio into the FRG format using the specific tool or editor associated with the target application or game.

Recommended software for conversion

• VGMToolbox: Useful for extracting and decoding AT3 files to WAV.
• GoldWave: Can open and convert ATRAC3 files if the proper codec is installed.
• Game-specific modding tools: For FRG packaging, use the editor or tool designed for the game or application that uses FRG files. Check the modding community or official documentation for guidance.

Step-by-step conversion process

1. Use VGMToolbox to extract and decode the AT3 file to WAV:
   • Open VGMToolbox and navigate to Misc Tools → Stream Tools → ATRAC3/ATRAC3plus.
   • Load your AT3 file and extract to WAV.
2. Convert the WAV file to FRG using the appropriate tool for your target application:
   • Refer to the game or software's modding tools or documentation for instructions.

Important considerations

• FRG is not a standard audio format; its structure varies by application.
• Always back up your original files before attempting conversion or modification.
• Check compatibility with your target software to ensure the converted FRG file works as intended.