Diarization versus speaker identification: Speaker A is not a name
Distinguish time-based speaker grouping from matching known identities, and check meeting labels, reference audio and overlapping speech.
Choose an approach
Use diarization to group speech by different speakers; matching known people additionally needs identity references and verification. Speaker A is a label for this result, not a name or necessarily the same person across files. Identity matching may follow segmentation but requires its own validation rather than one combined accuracy figure.
Speaker grouping differs from comparing known voices
pyannote provides diarization components for who-spoke-when grouping; SpeechBrain compares whether recordings contain the same speaker. A similarity decision does not provide a name, which needs a trusted reference association. Noise, short segments and overlap affect use. Familiar-sounding speech is not identity evidence, and an attendee list does not establish speaking order.
Validate boundaries and identity separately on one recording
Use permitted samples with known identities, manually mark speaker changes and check false merges. Test identity against verified references and include unknown speakers to avoid forced naming. Preserve overlap instead of attributing an entire passage to one person. Record timing and naming errors separately. No real meeting was processed and no voice-identity test was run here.
Maintain label mappings and reference scope over time
Save each export’s label-to-confirmed-name mapping instead of expecting Speaker A to persist across requests. Recheck difficult examples after reference changes and retain unknown outcomes. Segmentation can narrow listening effort, but important commitments need original-audio checks. Include reference preparation and attribution corrections, not just segment counts. Voice similarity is not definite identity and does not replace human confirmation.
Checked sources
These sources support the concepts and methods described here. Examples and test scope are labeled separately; check the version of the tools you use.