W64 to AU Audio conversion is the process of transforming Sony's 64-bit Waveform Audio file (W64), which supports very large uncompressed PCM audio and high channel counts, into the AU audio format, a simple headered audio container originally from Sun/NeXT that stores PCM and μ-law audio. This conversion rewraps or re-encodes audio data so it can be played or edited in tools that prefer the AU format while preserving sample rate, bit depth, and channel layout where possible.
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Drag your .W64 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.
W64 files use the audio/w64 MIME type and often contain 64-bit floating-point PCM audio data suited for professional editing. AU files have the audio/basic or audio/au MIME type and commonly use μ-law or PCM codecs, making them ideal for Unix-based playback and telephony applications. Both formats serve specific niches in audio processing but differ in codec and platform support.
The AU Audio (.AU) format is commonly used for audio. Understanding its characteristics can be helpful when converting to or from other formats like W64.
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 W64 audio files to AU format using our online converter. Designed for audio professionals and enthusiasts alike, our tool ensures a smooth and high-quality conversion experience without the need for complicated software.
The W64 format is a high-resolution, 64-bit audio format primarily used for professional recording, offering excellent audio fidelity. AU Audio is a simpler, more universally supported format often used in Unix environments and legacy systems. While W64 files are typically larger and more detailed, AU files provide greater compatibility and easier playback across different platforms.
Keep original bit depth and sample rate when possible to preserve audio fidelity; converting 24-bit/96kHz W64 to 16-bit/44.1kHz AU will reduce quality.
For very large W64 files, consider chunking or using a tool that supports streaming conversion to avoid running out of memory; ideal single-file sizes depend on system but aim under 2–4 GB for desktop utilities.
Use lossless PCM AU output if you need edit-friendly files; choose μ-law/a-law only when file size and compatibility with legacy systems matter.
For batch conversion, use command-line tools or batch-capable converters to maintain consistent metadata and channel mapping; test a single file first to verify settings.
This converter made switching from W64 to AU effortless and fast.
James L.
Audio Engineer
Perfect quality retention after converting to AU for my editing software.
Emily R.
Podcaster
Reliable and easy to use—saved me hours in format conversion.
Mark D.
Sound Designer
Start your free W64 to AU conversion now.
Drag your file here to to upload.
Up to 250MB
Note format limitation: AU headers may not support all extended metadata or some uncommon channel layouts from W64, so confirm metadata and channel order after conversion.