At9tool.exe High Quality
The Complete Guide to at9tool.exe
3. Loop Information
For video games, background music often needs to loop seamlessly. at9tool.exe allows embedding loop points directly into the file header.
at9tool.exe -e -br 128000 -l 0 -L 1000000 music.wav music.at9
-l: Loop start point (in PCM samples).-L: Loop end point (in PCM samples).
Step 5 – Adjust Timing for Multi-GPU Setups (If Applicable)
If you have an AMD APU + dGPU, AT9Tool.exe may conflict. Force a fixed GPU order: at9tool.exe
- Open Radeon Software → Performance → Tuning.
- Disable Automatic Tuning.
- Set a static clock speed and voltage (e.g., 1000mV core).
Technical Characteristics of ATRAC9
| Feature | Details |
|---------|---------|
| Codec type | Perceptual transform coding (MDCT + Huffman) |
| Sampling rates | 8 kHz – 48 kHz (typically 44.1 kHz or 48 kHz in games) |
| Bitrates | 16 kbps – 320 kbps (common: 64, 128, 256 kbps) |
| Channels | Mono, Stereo, 5.1 |
| Low latency | Yes – designed for real-time game audio |
| Looping | Built-in seamless loop support (essential for background music) |
| Container | Usually raw .at9 or inside .awb (CRI Atom) or .psarc (PS4) | The Complete Guide to at9tool