Audio tool

Convert PCM Files to AU on Your Device

Convert PCM to AU in your browser for legacy workstation exchange. The source remains on your device throughout local processing.

Route PCM → AU

or drop here · up to 500 MB

Max 50 MB per file

Preview (optional)

When your browser supports it, your audio plays here. You can still convert your file if preview does not load.

Ready

Use upload name

Adapt uncompressed sample data to a workflow built for legacy workstation exchange
Supply AU when an editor, player, or delivery form will not accept PCM
Create a AU copy from PCM for Unix workstations and older audio software

The device processor performs decoding and encoding during the job during this PCM-to-AU job.
Available memory can limit very large PCM conversion jobs.
Keep the source until the AU result passes a full playback check.

AU serves Unix workstations and older audio software, whereas PCM commonly serves audio engineering, interchange, and analysis.
For PCM-to-AU delivery, plan for limited modern consumer support.
After leaving PCM, the receiving app must support the streams encoded inside AU, not only its extension.

PCM to AU taking too long? Try a small source first to separate a performance issue from a format issue.
AU converted from PCM not opening? Test a compatible player and inspect the output streams.
A AU extension alone may not be enough; verify the required internal codec.

When does PCM to AU conversion make sense?

It is useful when PCM media created for uncompressed sample data must enter a AU system designed for legacy workstation exchange.

Where is the PCM source processed?

The browser prepares AU from PCM on this device instead of sending the source to a remote conversion server.

How can I approve AU converted from PCM?

Test the AU file in the receiving app and compare duration, channels and loudness with the PCM source.

Quick use cases