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Multi-channel support

Audio files can contain multiple channels. In this feature, two channels are treated as two independent inputs in one file rather than stereo left/right.

With multi-channel support, when each speaker is recorded on a separate channel, the API transcribes per channel and labels utterances accordingly.

  • Channel 1: Speaker 1
  • Channel 2: Speaker 2

The result format is the same as normal; the spk field indicates channel ids.

caution
  • Multi-channel usage is billed as the sum of per-channel durations. See Pricing.
  • Channel durations may differ; both are supported.