SonaFactEvidence from audio
SonaFactEvidence from audio

Convert stereo to mono

Both channels are mixed into one, and you can lower the sample rate as well — 16 kHz is a common choice for speech. The file gets smaller, and the single channel plays the same in both ears.

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How to do it

  1. Choose a recording.
  2. Choose the sample rate and the format: MP3 for the smallest file, WAV without compression.
  3. Click “Convert to mono” and download the result.

Questions

Will I lose anything by converting to mono?
The difference between left and right disappears, because both channels are mixed together. For speech this rarely matters; music loses its sense of space.
Which sample rate should I choose?
16 kHz is a common choice for speech and gives the smallest file; choose 44.1 or 48 kHz for music. Rates higher than the file's own are not offered — they would only make it bigger.
How much smaller will the file be?
The tool shows an estimate before you start. A mono WAV is half the size of a stereo WAV at the same sample rate, and a lower rate makes it smaller still.

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