WAV Audio to AU Audio conversion is the process of transforming an audio file stored in the WAV (Waveform Audio File) container—typically uncompressed PCM—into the AU format, a simple audio file format originally developed by Sun Microsystems that supports a variety of encodings. This conversion repackages or re-encodes the audio so it plays correctly in applications or systems that expect .au files while preserving sample rate, bit depth, and channel layout when possible.
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Read guide →Drag your .WAV file from your computer or use the browse function.
Confirm .au as the selected destination format.
Click "Convert" and download your converted .AU file once ready.
WAV files use the MIME type audio/wav and typically contain uncompressed PCM audio data. AU files use the MIME type audio/basic or audio/au and often employ u-law, PCM, or ADPCM codecs. WAV is common in Windows environments, while AU is favored in UNIX and Sun Microsystems systems.
The AU Audio (.AU) format is commonly used for audio. Understanding its characteristics can be helpful when converting to or from other formats like WAV Audio.
While specific technical details aren't available here, AU Audio files generally serve the purpose of storing audio effectively within their domain.
Easily convert your WAV audio files to AU format using our fast and reliable online converter. No downloads or installations required, making it perfect for quick audio format changes.
WAV Audio is a popular uncompressed format known for high quality but larger file sizes. AU Audio, while still maintaining good quality, typically uses simpler codecs and is more efficient for UNIX-based systems. Choosing AU can enhance compatibility where WAV is unsupported or too large.
Keep files under 250 MB for free web-based converters; for large archives consider desktop tools or premium services to avoid upload limits.
To preserve quality, choose linear PCM AU output and match the original WAV’s sample rate and bit depth; avoid unnecessary re-sampling or bit-depth reductions.
For batch conversion, use a dedicated audio converter or command-line tools (ffmpeg, sox) to maintain consistent settings and speed up processing.
Be aware AU historically favors μ-law/A-law in telephony and older Unix systems; some players may not support all AU encodings, so test playback after conversion.
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Large or high-resolution WAV files (96 kHz/24-bit+) may produce very large AU files in PCM—use lossless compression or downsample if storage/bandwidth is a concern.