Transsion's Speaker-Attributed Multilingual ASR System for the MLC-SLM 2026 Challenge
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Computer Science > Computation and Language
arXiv:2609.20833 (cs)
[Submitted on 24 Jul 2026]
Title:Transsion's Speaker-Attributed Multilingual ASR System for the MLC-SLM 2026 Challenge
Authors:Zhecheng Ren, Xuanji He, Xiaoxiao Li, Zhichen Han, Gaoyang Dong, Gaosheng Zhang, Minchuan Chen, Fengjie Zhu
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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
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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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