Mid / Side Stereo Converter
Convert exactly two-channel decoded audio between Left/Right and orthonormal Mid/Side representation, then export WAV.
What this tool does
Mid/Side conversion is reversible with the same orthonormal matrix. It is useful for stereo analysis and processing workflows, but this tool does not widen, master or improve audio automatically.
How it works
Audio is decoded with the browser Web Audio API. Processing is deterministic and local in the browser. Generated audio exports are 16-bit PCM WAV; marker exports are text sidecars.
Limitations
Browser codec support varies. Files that cannot be decoded are rejected. This utility does not claim mastering, forensic analysis, certified metering, or restoration beyond its stated operation.
Privacy
Processing stays in your browser for this tool. The selected file is not intentionally uploaded by this page.
FAQ
Does it change the original file? No. It creates a new export. Does metadata carry over? WAV processing exports do not preserve source metadata.