Which audio file gives better vocal-removal results?
The short answer
Use the cleanest source you already have. A lossless recording avoids an extra lossy encoding stage, but separation still depends mainly on the arrangement and mix. Converting a low-quality MP3 into WAV does not restore details that were removed during compression.
Try this workflow
- Use an original WAV or a good-quality compressed file when available.
- Avoid screen recordings with added notification sounds or distortion.
- Preview the same passage when comparing different copies.
What to check before you finish
Listen to the source before separating it. If cymbals already sound metallic or the voice is distorted, the model receives that damage too. Do not enlarge a file just to make it look higher quality; the additional bytes may not contain additional information.
A practical example
Compare two copies of one song using the identical chorus start. A larger copy may sound no better if it was simply converted from the smaller one. Choose the copy with clearer source audio rather than the larger extension label. Keeping the same preview passage makes differences in separation easier to judge fairly.
More questions
Does WAV guarantee perfect separation?
No. WAV is a container for audio data, not a guarantee about how that audio was recorded or mixed.
Can a noisy live recording still be useful?
Yes, but audience noise, room reflections and overlapping instruments can complicate separation. Preview it for your intended purpose instead of expecting studio-isolated parts.
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