Rohan Paul
@rohanpaul_ai
VoiceArena launched Diarization Bench to compare 12 diarization systems on the same real-world audio and scoring rules.
It exposes how quickly accuracy drops with overlap and more speakers.
STT, TTS, conversational agents, and now diarization, all on @voicearena_ai
The number that got me is the collar effect: the collar is simply the timing tolerance around a speaker change.
NVIDIA Nemotron 3 scores 4.29% DER with a 250 ms collar. Score the exact same output at 0 ms and it becomes 14.72%.
