This paper describes the TSUP team's submission to the ISCSLP 2022
conversational short-phrase speaker diarization (CSSD) challenge which
particularly focuses on short-phrase conversations with a new evaluation metric
called conversational diarization error rate (CDER). In this challenge, we
explore three kinds of typical speaker diarization systems, which are spectral
clustering(SC) based diarization, target-speaker voice activity
detection(TS-VAD) and end-to-end neural diarization(EEND) respectively. Our
major findings are summarized as follows. First, the SC approach is more
favored over the other two approaches under the new CDER metric. Second, tuning
on hyperparameters is essential to CDER for all three types of speaker
diarization systems. Specifically, CDER becomes smaller when the length of
sub-segments setting longer. Finally, multi-system fusion through DOVER-LAP
will worsen the CDER metric on the challenge data. Our submitted SC system
eventually ranks the third place in the challenge.

该论文描述了 TSUP 团队在 ISCSLP 2022 CSSD 挑战赛中的参赛表现和关键研究成果，侧重于短话语音者分离与新的评价指标 CDER。SC 方法是最受欢迎的方法并且所有的三种语音者分离系统都需要调参，最后 SC 系统的表现居于第三名。