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VOC at a glance
VOC
VOC belongs to the DOS and early Windows multimedia period, when sound-card vendors heavily influenced both audio capabilities and file-format habits in software distribution.
AU at a glance
AU
AU belongs to an earlier multimedia era where workstation and Unix vendors often had their own practical audio defaults.
Format comparison
| Feature | VOC | AU |
|---|---|---|
| File type | Audio | Audio |
| Extensions |
|
|
| MIME type |
|
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| Created year | 1989 | 1987 |
| Inventor | Creative Technology (Creative Labs) | Sun Microsystems |
| Status | legacy | active |
| Primary use cases |
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| Multitrack support | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use VOC
- Your source file is already in VOC.
- Preserve source expectations before exporting to AU.
- VOC is commonly used in audio workflows.
When to use AU
- Your target workflow expects AU.
- Improve delivery compatibility with AU.
- AU is commonly used in audio workflows.
FAQs
Why convert VOC to AU?
Convert to AU when preserving compatibility with older Unix or workstation software, educational assets, or historical multimedia archives.
In most present-day workflows the practical task is to decode AU content and move it to WAV, AIFF, or a modern compressed format.
Use AU only when downstream compatibility makes it necessary.
What changes when converting VOC to AU?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting VOC to AU?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.