arXiv Computation and Language

OSynth: A Longitudinal, Context-Sensitive Evaluation of Meeting Understanding

OSynth is a large-scale synthetic dataset that simulates organizations, providing 570 hours of meeting audio along with related artifacts and a latent ground-truth state. Human raters can only distinguish OSynth meetings from real transcripts 56% of the time when given short excerpts, indicating the dataset’s realism. When tested with state-of-the-art large language models, adding contextual information from OSynth significantly improves performance on entity-sensitive tasks, highlighting both current limitations and the dataset’s potential for advancing contextual meeting understanding.

arXiv Computation and Language
Sep 25

Interactive In-Meeting Speaker Correction with Human Feedback

The paper introduces an LLM-assisted system for correcting speaker attribution errors during meetings. It combines streaming ASR, diarization, and concise LLM-generated summaries to guide users in providing brief corrective feedback, which updates the transcript and adds online speaker enrollments. The approach includes mechanisms to accurately interpret user corrections and a simulation for large-scale evaluation, achieving significant reductions in DER and speaker substitution error on the AMI headset test set, with a pilot usability study highlighting further improvements.

By Xinlu He, Yiwen Guan, Badrivishal Paurana, Pitipat Kongsomjit, Zilin Dai, Jacob Whitehill
arXiv Computation and Language
Sep 11

Beyond Prompting: Efficient and Robust Contextual Biasing for Speech LLMs via Logit-Space Integration (LOGIC)

The paper introduces LOGIC (Logit‑Space Integration for Contextual Biasing), a new framework that injects contextual entity information directly into the decoding layer of Speech Large Language Models, bypassing the limitations of prompt‑based methods. LOGIC operates with constant‑time complexity regardless of the size of the entity list, and experiments with the Phi‑4‑MM model across 11 multilingual locales show an average 9% relative reduction in Entity WER while adding only a 0.30% increase in False Alarm Rate.

By Peidong Wang, Jian Xue, Jinyu Li
arXiv AI
Oct 15

Generating Synthetic Doctor-Patient Conversations for Long-form Audio Summarization

The paper introduces a synthetic data generation pipeline for long‑context audio reasoning, focusing on first‑visit doctor‑patient conversations and SOAP note generation. The pipeline consists of persona‑driven dialogue creation, multi‑speaker audio synthesis with realistic acoustics, and LLM‑based reference note production, all built with open‑weight models. The authors release 8,800 synthetic conversations, 1.3k hours of audio, and reference notes, and show that cascaded approaches still outperform end‑to‑end models on current open‑weight systems.

By Yanis Labrak, David Gr\"unert, S\'everin Baroudi, Jiyun Chun, Pawel Cyrta, Sergio Burdisso, Ahmed Hassoon, David Liu, Adam Rothschild, Reed Van Deusen, Petr Motlicek, Andrew Perrault, Ricard Marxer, Thomas Schaaf
arXiv AI
Sep 25

A Harness for Synthesizing Diverse Naturalistic Full-Duplex Conversations

The paper introduces a pipeline that generates intent‑labeled, two‑channel conversational speech from relational event lists, enabling controlled synthesis of full‑duplex dialogue with 42 phenomena across eight families in English and Mandarin. By having an LLM author each event’s speaker, text, conversational act, and attachment, and then aligning and timing these events independently, the system produces diverse, realistic turn‑taking signals. Experiments show that models trained on this synthetic corpus achieve higher floor‑occupancy accuracy and better start‑speaking/listening F1 scores compared to models trained on prior data.

By Matthew Sun, Vinay Kothapally, Meng Yu, Chao Huang, Hao Zhang, Yixuan Zhang, Steve Yves
arXiv AI
Oct 7

PERSIST: Who-What-When Memory Across Sessions for Full-Duplex Spoken Dialogue

PERSIST is a persistent memory system designed for multi-session, multi-speaker spoken dialogue, explicitly modeling Who, What, and When to enable voice assistants to recall past conversations and adapt to individual users. It structures cross-session histories into readable event records and retrieves them using a 3W joint scoring mechanism that combines semantic content, acoustic speaker identity, and temporal state. By reusing intermediate representations from the dialogue backbone, PERSIST reduces retrieval latency from 578.42 ms to 7.03 ms and achieves 85.08% end‑to‑end task accuracy on the SpokenTrace benchmark, improving EM@3 from 49.01% to 82.10%.

By Achira Lin, Siyuan Hou, Wenyi Yu, Xinnian Zhao, Haoyu Niu, Wang Geng, Longshuai Xiao, Shihai Xiao, Mangsuo Zhao, Chao Zhang