How to extract left or right audio channel — free, no upload
- Step 1Upload your stereo recording — Drop your stereo file.
- Step 2Confirm channel split — JAD extracts both L and R as separate mono files.
- Step 3Download L and R as separate mono files — Download the channel you need.
Frequently asked questions
Why do some podcast recordings have different audio on each stereo channel?+
Many remote interview recording setups (Zencastr, Riverside.fm local recordings, Skype two-track recording) capture each speaker on a separate channel: the host on the left channel and the guest on the right channel. This is called 'dual-mono stereo'. Splitting lets you process each voice independently.
Can I split a stereo music track to process left and right separately?+
Yes. For music production, you might split to check for phase issues, process mid and side content, or isolate panned instruments. However, most stereo music uses correlated mid content not hard-panned separation — you may not get clean instrument isolation from channel splitting alone.
What format do the split files come out in?+
Each channel is output as a mono WAV or MP3 (your choice) at the original sample rate. They are labelled filename_left.wav and filename_right.wav. You can then process each independently and re-merge with the audio merger or in a DAW.
Privacy first
All audio processing runs locally in your browser using FFmpeg compiled to WebAssembly. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.