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Types of Errors from Mono Transcripts

The following list describes four types of errors that may occur when transcribing mono audio with diarization applied.

Overtalk Word Error

Overtalk word errors are caused by two people speaking at the same time. This creates an unintelligible audio region that cannot be transcribed reliably. Overtalk negatively impacts accuracy whether or not diarization is used.

Diarization Word Error

Diarization word errors are caused by the diarizer splitting channels within a word instead of between words. When this incorrect splitting occurs, each word fragment is transcribed independently, resulting in error.

Diarization Side Error

Diarization side errors occur when the diarizer makes an incorrect assignment and places speech on the wrong channel.

Side Classification Error

Side classification errors are caused by failures to correctly identify the side of the conversation containing the majority of the contact center agent’s speech.


The errors mentioned above do not apply to channel-separated audio.