Convert CRI ACB cue sheets to WAV online and get the sounds stored inside as separate files. Upload files up to 20GB and download the converted result in a few clicks.
Drag & Drop your ACB file here
ACB files, up to 20GB
Files stay private.
Automatically deleted after 24 hours.
Link
20GB upload limit.
4.8/5
Trusted for 1,827,796+ conversions
HOW IT WORKS
Three steps, no account, nothing to install.
01
Upload your ACB file
Drag and drop a .acb file from a game's sound folder, or select it from your device.
02
Convert to WAV
Keep WAV as the output format and start. Each sound stored in the .acb is decoded to 16-bit PCM.
03
Download the WAVs
Each sound becomes one WAV, numbered in bank order and zipped on the download page.
ACB
ACB is the cue sheet format of CRI ADX2, the sound middleware used in many Sega, Atlus and mobile games. An .acb lists a game's sound cues and can store short sounds itself, usually as HCA or ADX audio. Longer music and voices are usually kept in a companion .awb streaming file.
WAV
WAV is a RIFF-based audio format commonly used for uncompressed PCM audio. It is easy to edit and broadly supported in recording, broadcast, and desktop audio workflows.
FILE FORMATS
SOURCE
An ACB is a CRI ADX2 cue sheet. It lists a game's sounds with their cue names and either stores short sounds inside itself or points to a companion .awb wave bank that holds the streamed audio. Sound effects, voices and jingles in many Japanese and mobile games live in ACB and AWB pairs.
TARGET
Microsoft and IBM defined WAV in 1991. It normally stores plain PCM audio with no compression, which is why editors, DAWs, broadcast systems and speech tools accept it without question. The price is size: CD-quality stereo takes about 10 MB per minute, and tagging support is limited.
| Feature | ACB | WAV |
|---|---|---|
| Developed by | CRI Middleware (ADX2) | Microsoft and IBM |
| File extension | .acb | .wav |
| Compression | HCA or ADX inside | None (PCM) |
| Size vs uncompressed WAV | About 1/4 to 1/10 | Same size (1:1) |
| Tags and cover art | Cue names | Basic text tags, no cover art |
| Best for | Sound banks in CRI games | Editing, mastering, speech tools |
| Plays on phones and browsers | No, needs vgmstream | Yes |
USE CASES
Practical workflows where ACB to WAV conversion is useful.
Sample game sound effects
Load the WAVs of a Sega, Atlus or mobile game's effect bank into a sampler or DAW.
Edit sounds for a game mod
Decode the original effects or voices to WAV, edit them in an audio editor, then rebuild the bank with a CRI modding tool.
Clean up voice lines
Run noise reduction or level matching on voice lines stored in an .acb, starting from uncompressed PCM.
Find out which .awb holds the audio
When an .acb only lists cues, the message says the sounds are in a separate .awb and usually names it, so you know what to look for in the game folder.
Build a sound effect library
Sound designers can keep a game's jingles and UI sounds as numbered WAVs for reference.
Use game sounds as a video source
Import the WAVs into Premiere Pro or DaVinci Resolve as clean audio for an edit.
Study a game's sound design
Sound design students can open the waveform and spectrum of each stored effect in any audio editor to see how it was built.
Archive a game's cue sheets as PCM
Keep uncompressed WAV copies of the sounds stored in a game's .acb files so they open in any audio software later on.
Re-encode to another format once
Use the WAVs as a clean intermediate for FLAC, AAC or Opus in your own encoder, so the audio is compressed only one more time.
Compare sounds between game versions
Convert the same .acb from two releases and line the WAVs up in an editor to hear what changed.
SUPPORTED FILES
CRI ADX2 cue sheets with sounds stored inside are supported.
ACB files that store their sounds inside.
The usual CRI codecs.
Decoded when the game's key is built in.
Usually point to an .awb, which the message names.
Only the sounds stored inside the .acb are converted.
Only convert audio from games you own or have permission to use.
TROUBLESHOOTING
Game audio works differently from normal music files, which explains most surprises.
01
Upload the .awb named in the message instead.
02
Streamed sounds live in the .awb. Convert it as well.
03
The file held several sounds, so each one became its own WAV, numbered in bank order. Sounds have numbers, not names.
04
Some games encrypt their audio with their own key. Files from the many games whose keys are built in decode normally; others can't be converted.
05
Looping game music is rendered the way the game plays it: the looped section plays once more, then fades out over 10 seconds. A loop covering the whole track plays once.
06
The file is damaged, isn't really ACB audio, or was extracted with the wrong tool. Extract it again from the game files and retry.
vgmstream is the reference decoder for game audio, used through foobar2000 or the command line. dragdropdo runs the same decoder in the browser, so you can turn ACB into WAV on any device.
| What matters | dragdropdo | vgmstream and Desktop Tools |
|---|---|---|
| Nothing to install | ✓Yes. Runs in any modern browser. | ~foobar2000 plus the vgmstream plugin, or vgmstream-cli. |
| Works on phones and tablets | ✓Yes. Desktop, Android, iPhone and iPad. | ~No. Windows and command-line tools. |
| Batch conversion | ✓Yes. Add many files and download one ZIP. | ~Yes, with scripts or foobar2000's converter. |
| Share finished files | ✓Yes. Send a unique link from the result page. | ~You upload and share the files yourself. |
| Pricing | ✓Free with daily limits. $2.99 or $6.99 passes for unlimited use, no monthly plan. | ~Free. |
| Choosing loop count and fade | ✓Fixed: an inner loop plays twice, then fades over 10 seconds. | ~Yes. vgmstream-cli sets the loop count and fade length. |
Other tools use different pricing, limits and workflows. This comparison describes dragdropdo's own features without assuming every other tool works the same way.
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WHY DRAGDROPDO
Convert ACB to WAV in your browser, with nothing to install and nothing kept after 24 hours.
Private by default
Files are encrypted in transit and deleted from our servers automatically after 24 hours.
No install required
Convert in any modern browser on Windows, Mac, Linux, Android, iPhone or iPad. No app and no sign-up wall.
Big files and batches
Upload files up to 20GB each, add several at once, and download the results one by one or as a ZIP.
Share & download
Save finished files to your device or pass them on with a share link from the result page.
MORE ACB TOOLS
In games, an .acb file is a cue sheet of CRI ADX2, the CRIWARE sound middleware used in many Japanese console, PC and mobile games. It lists the game's sound cues and can contain short sounds itself, usually as HCA or ADX audio, while longer music and voices are usually streamed from a companion .awb file.
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FAQ
Answers to common questions about dragdropdo's ACB to WAV converter.
