How to convert AU to WAV
- Add your .AU file - drop it in the box above or click to browse.
- Convert it to .WAV in a few seconds.
- Download your new .WAV file.
What to expect
- Classic
.aufiles are often 8-bit µ-law at 8000 Hz (telephone quality); converting to.wavpreserves that quality exactly but cannot improve it. - µ-law encoding in
.aufiles is decoded to linear PCM during conversion - no audio data is lost in the process itself. - Text annotations in the
.auheader are not carried over to the.wavoutput and will be silently dropped.
Frequently asked questions
Is AU to WAV conversion lossless?
Yes - both formats store PCM audio, so the conversion changes only the container. µ-law AU is decoded to linear PCM correctly by all standard tools.
Why does my converted WAV sound low quality?
The source
.au file is likely 8-bit µ-law at 8 kHz, which is telephone-grade audio by design. Conversion cannot improve the original recording quality.Does ffmpeg handle all AU encoding variants?
It handles the common ones - µ-law, A-law, and linear PCM. For unusual variants, try Audacity as a fallback.
What sample rate will the output WAV have?
The same as the source
.au file. If you need a different rate (e.g. 44100 Hz), resample during export in Audacity.
