Understanding AT9Tool.exe: The Essential Guide to AT9 Audio Conversion
Used for game audio, system notifications, and custom homebrew themes ( theme.xml structures).
When working with command-line audio conversion, formatting discrepancies can cause errors. Below are the most common failures and how to fix them. Error: "Unsupported Input Format"
For background music (BGM) that loops, you can specify loop points using the -loop parameter. This requires the start and end sample numbers of the loop. A simpler -wholeloop parameter is also available for files that loop from the very beginning.
If you have the file from a trusted source (e.g., a game modding SDK), please provide:
Converts standard, uncompressed Linear PCM audio files (typically in .wav format) into compressed .at9 files.
⚠️ Downloaded at9tool.exe from unknown sources may be malware. Always scan with VirusTotal or use open-source alternatives.
(Here, -e stands for encode, and -br sets the bitrate).
: Converts standard, uncompressed 16-bit linear PCM Wave ( .wav ) files into the compressed .at9 format required by Sony hardware.
The tool relies on MSVCR90.DLL . If the tool crashes immediately, you likely need to install both the x86 and x64 versions of this package.
To ensure a successful conversion without errors, your source .wav files must strictly adhere to the following hardware-compatible specifications: Mono (1CH) or Stereo (2CH). Sampling Rate: Typically 44.1 kHz or 48 kHz. Bit Depth: 16-bit PCM. How to Use AT9Tool.exe: A Step-by-Step Guide
If you want to dive deeper into custom audio implementation, tell me: What are you targeting? (PS Vita, PS4, etc.)
