: Reverses the compression process, extracting the .at9 asset back into an editable .wav layout. Game preservationists and asset rippers rely heavily on this functionality to listen to game sound effects or music on a PC. Fundamental Syntax and Commands
Because ATRAC9 is designed for streaming, at9tool.exe creates files that can be read chunk-by-chunk from the storage media without loading the entire file into RAM. This is essential for cutscenes and gameplay sequences where memory cannot be allocated to long audio buffers.
If your converted file is 0KB, the input audio file might not be in the correct format. Ensure your input .wav file is stereo .
Fix: This tool relies on older runtime libraries. Download and install the Microsoft Visual C++ 2010 Redistributable Package (x86 or x64 depending on your OS). at9tool.exe
Are you trying to a custom sound or decode an existing game asset? Are you encountering any specific error messages ? Share public link
Replacing in-game soundtracks, voice lines, or sound effects.
Legitimately, at9tool.exe is distributed as part of official Sony software development kits (SDKs), specifically the PlayStation Vita SDK and the PlayStation 4 SDK. Because SDKs are proprietary and protected by non-disclosure agreements (NDAs), the tool is technically not public domain software. : Reverses the compression process, extracting the
What are you targeting (PS Vita, PS4, or PS5)?
is a specialized command-line utility used primarily for converting and inspecting ATRAC9 audio files . This executable is a cornerstone for developers, modders, and audio enthusiasts working with Sony hardware, particularly the PlayStation Vita and PlayStation 4 . What is at9tool.exe?
To use at9tool.exe , you must navigate to its directory via your command line tool. The basic syntax follows an operation-based structure. How to Encode a WAV to AT9 This is essential for cutscenes and gameplay sequences
You can use batch scripts to convert all *.at9 files in a folder at once. For example, the following command in a .bat file will decode all AT9 files in the current directory:
ATRAC9 (Adaptive Transform Acoustic Coding 9) is an audio compression technology designed to provide high-quality sound while maintaining a tiny file footprint. Sony utilizes this format for: Background music (BGM) in console dashboards. System sound effects (UI clicks, notifications). In-game dialogue and ambient loops. PlayStation Vita theme audio ( theme.at9 ). Where Does AT9Tool.exe Come From?
: Type cmd into your Windows search bar, open the standard Command Prompt , navigate to your working folder using the cd command, and execute the utility there. Strict Input Format Constraints