Add your files
Drop one OPUS or two hundred. Batch conversion is not a paid feature here.
Convert OPUS to WAV
A voice note or a WebRTC recording has to go into an editor or a transcription tool that only reads PCM.
Runs on your deviceFreeNo sign-upBatch supported
Audio is re-encoded on your device. The engine downloads once, then works offline.
Waiting for files/Engine: on-device/Network requests made: 0
What actually changes
OPUS and WAV are not the same picture in two wrappers.
The Opus stream is decoded to PCM at 48 kHz and written as WAV. No further loss occurs after this point.
Worth knowing first
Opus decodes at 48 kHz regardless of what the original recording used, so a 16 kHz voice note comes out as a 48 kHz file containing 16 kHz worth of information. Downsampling it afterwards for a speech model is safe and makes the file three times smaller.
Questions
OPUS to WAV, answered
Why is the WAV so large compared with the Opus?
Opus at 24 kbps against uncompressed PCM at over 700 kbps. A factor of thirty is normal.
Is any detail recovered?
No. Decoding never restores what the encoder discarded.
How to convert OPUS to WAV
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Choose your settings
Waveform Audio is lossless, so nothing is thrown away in the conversion.
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Download
Instant, because the file never went anywhere. Nothing expires, since nothing was stored.