[Submitted on 24 Jul 2026]
Title:Transsion's Speaker-Attributed Multilingual ASR System for the MLC-SLM 2026 Challenge
View a PDF of the paper titled Transsion's Speaker-Attributed Multilingual ASR System for the MLC-SLM 2026 Challenge, by Zhecheng Ren and 7 other authors
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Abstract:This paper presents the Transsion Speech Team submission to Task 1 of the MLC-SLM 2026 Challenge, which focuses on speaker-attributed transcription for multilingual conversational speech. We propose a cascaded framework consisting of three components: a speaker diarization module, a long-form multilingual ASR module, and a speaker-transcription fusion module. The diarization module is built upon DiariZen and produces speaker-homogeneous segments through local speaker activity estimation and global speaker clustering. The ASR module is based on Qwen3-Omni and generates multilingual transcriptions, while an external CTC-based alignment model provides precise word- and character-level timestamps. Finally, the fusion module combines diarization outputs with timestamped transcriptions to generate speaker-attributed STM outputs. Experimental results on the official evaluation set demonstrate the effectiveness of the proposed framework. The submitted system achieves a tcpMER of 15.41% and ranks second among all participating teams.
Subjects:
Computation and Language (cs.CL)
Cite as: arXiv:2609.20833 [cs.CL]
(or arXiv:2609.20833v1 [cs.CL] for this version)
https://doi.org/10.48550/arXiv.2609.20833
arXiv-issued DOI via DataCite
Submission history
From: Xiaoxiao Li [view email] [v1] Fri, 24 Jul 2026 09:42:54 UTC (1,072 KB)
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