Duplex Conversation: Towards Human-like Interaction in Spoken Dialogue Systems
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Abstract (arXiv)
In this paper, we present Duplex Conversation, a multi-turn, multimodal spoken dialogue system that enables telephone-based agents to interact with customers like a human. We use the concept of full-duplex in telecommunication to demonstrate what a human-like interactive experience should be and how to achieve smooth turn-taking through three subtasks: user state detection, backchannel selection, and barge-in detection. Besides, we propose semi-supervised learning with multimodal data augmentation to leverage unlabeled data to increase model generalization. Experimental results on three sub-tasks show that the proposed method achieves consistent improvements compared with baselines. We deploy the Duplex Conversation to Alibaba intelligent customer service and share lessons learned in production. Online A/B experiments show that the proposed system can significantly reduce response latency by 50%.
Key facts. Cited by 28 papers in the map (data through 7 Oct 2026). Builds on 35 of its 72 references that are in the map. First posted on arXiv 30 May 2022.
Builds on
35 of 72 references.
References · 35
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Citing papers per year: 2022: 3; 2023: 7; 2024: 3; 2025: 10; 2026: 5.
28 papers.
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- 2024Language Model Can Listen While Speakingcited by 62
- 2022UniMSE: Towards Unified Multimodal Sentiment Analysis and Emotion Recognitioncited by 61
- 2024A Full-duplex Speech Dialogue Scheme Based On Large Language Modelscited by 40
- 2023Transformers in Speech Processing: A Surveycited by 38
- 2022Proton: Probing Schema Linking Information from Pre-trained Language Models for Text-to-SQL Parsingcited by 30
- 2023UniSA: Unified Generative Framework for Sentiment Analysiscited by 17
- 2024SSR: Alignment-Aware Modality Connector for Speech Language Modelscited by 16
- 2025FlexDuo: A Pluggable System for Enabling Full-Duplex Capabilities in Speech Dialogue Systemscited by 15
- 2023Speech-Text Dialog Pre-training for Spoken Dialog Understanding with Explicit Cross-Modal Alignmentcited by 13
- 2025Applying General Turn-taking Models to Conversational Human-Robot Interactioncited by 13
- 2025Chronological Thinking in Full-Duplex Spoken Dialogue Language Modelscited by 13
- 2023Unsupervised Dialogue Topic Segmentation with Topic-aware Utterance Representationcited by 11
16 more
- 2025Easy Turn: Integrating Acoustic and Linguistic Modalities for Robust Turn-Taking in Full-Duplex Spoken Dialogue Systemscited by 11
- 2025OpenOmni: Advancing Open-Source Omnimodal Large Language Models with Progressive Multimodal Alignment and Real-Time Self-Aware Emotional Speech Synthesiscited by 10
- 2022FCTalker: Fine and Coarse Grained Context Modeling for Expressive Conversational Speech Synthesiscited by 9
- 2025LLM-Enhanced Dialogue Management for Full-Duplex Spoken Dialogue Systemscited by 9
- 2023Empathetic Response Generation via Emotion Cause Transition Graphcited by 8
- 2025Voila: Voice-Language Foundation Models for Real-Time Autonomous Interaction and Voice Role-Playcited by 8
- 2023Self-Explanation Prompting Improves Dialogue Understanding in Large Language Modelscited by 5
- 2025Telephone Surveys Meet Conversational AI: Evaluating a LLM-Based Telephone Survey System at Scalecited by 5
- 2025Speculative End-Turn Detector for Efficient Speech Chatbot Assistantcited by 5
- 2025Affective and Conversational Predictors of Re-Engagement in Human-Robot Interactions -- A Student-Centered Study with A Humanoid Social Robotcited by 3
- 2026Hierarchical Acoustic-Semantic Modeling: Modality Separation and Semantic Coherence for Full-Duplex SLMscited by 3
- 2023Towards Objective Evaluation of Socially-Situated Conversational Robots: Assessing Human-Likeness through Multimodal User Behaviorscited by 0
- 2026From Transcripts to AI Agents: Knowledge Extraction, RAG Integration, and Robust Evaluation of Conversational AI Assistantscited by 0
- 2026Does Listening Matter? Backchanneling and Nodding in AI Clonecited by 0
- 2026Training Intelligent Voice Assistant Wakeup with Controllable Synthetic Conversationscited by 0
- 2026Neither Silence nor Overlap Is Failure: Intent-Conditioned Evaluation of Turn-Taking in Full-Duplex Spoken Dialogue Modelscited by 0
- 2026Neither Silence nor Overlap Is Failure: Intent-Conditioned Evaluation of Turn-Taking in Full-Duplex Spoken Dialogue Models23 Sep 2026
- 2026Training Intelligent Voice Assistant Wakeup with Controllable Synthetic Conversations22 Sep 2026
- 2026Does Listening Matter? Backchanneling and Nodding in AI Clone20 Aug 2026
- 2026Hierarchical Acoustic-Semantic Modeling: Modality Separation and Semantic Coherence for Full-Duplex SLMs7 Jul 2026
- 2026From Transcripts to AI Agents: Knowledge Extraction, RAG Integration, and Robust Evaluation of Conversational AI Assistants26 Jan 2026
- 2025Chronological Thinking in Full-Duplex Spoken Dialogue Language Models2 Oct 2025
- 2025Easy Turn: Integrating Acoustic and Linguistic Modalities for Robust Turn-Taking in Full-Duplex Spoken Dialogue Systems28 Sep 2025
- 2025Voila: Voice-Language Foundation Models for Real-Time Autonomous Interaction and Voice Role-Play5 May 2025
- 2025Speculative End-Turn Detector for Efficient Speech Chatbot Assistant30 Mar 2025
- 2025Telephone Surveys Meet Conversational AI: Evaluating a LLM-Based Telephone Survey System at Scale27 Feb 2025
- 2025LLM-Enhanced Dialogue Management for Full-Duplex Spoken Dialogue Systems19 Feb 2025
- 2025FlexDuo: A Pluggable System for Enabling Full-Duplex Capabilities in Speech Dialogue Systems19 Feb 2025
16 more
- 2025Affective and Conversational Predictors of Re-Engagement in Human-Robot Interactions -- A Student-Centered Study with A Humanoid Social Robot18 Feb 2025
- 2025Applying General Turn-taking Models to Conversational Human-Robot Interaction15 Jan 2025
- 2025OpenOmni: Advancing Open-Source Omnimodal Large Language Models with Progressive Multimodal Alignment and Real-Time Self-Aware Emotional Speech Synthesis8 Jan 2025
- 2024SSR: Alignment-Aware Modality Connector for Speech Language Models30 Sep 2024
- 2024Language Model Can Listen While Speaking5 Aug 2024
- 2024A Full-duplex Speech Dialogue Scheme Based On Large Language Models29 May 2024
- 2023Self-Explanation Prompting Improves Dialogue Understanding in Large Language Models22 Sep 2023
- 2023UniSA: Unified Generative Framework for Sentiment Analysis4 Sep 2023
- 2023Towards Objective Evaluation of Socially-Situated Conversational Robots: Assessing Human-Likeness through Multimodal User Behaviors21 Aug 2023
- 2023Speech-Text Dialog Pre-training for Spoken Dialog Understanding with Explicit Cross-Modal Alignment19 May 2023
- 2023Unsupervised Dialogue Topic Segmentation with Topic-aware Utterance Representation4 May 2023
- 2023Transformers in Speech Processing: A Survey21 Mar 2023
- 2023Empathetic Response Generation via Emotion Cause Transition Graph23 Feb 2023
- 2022UniMSE: Towards Unified Multimodal Sentiment Analysis and Emotion Recognition21 Nov 2022
- 2022FCTalker: Fine and Coarse Grained Context Modeling for Expressive Conversational Speech Synthesis27 Oct 2022
- 2022Proton: Probing Schema Linking Information from Pre-trained Language Models for Text-to-SQL Parsing28 Jun 2022
- 2024Language Model Can Listen While Speakingcited by 62
- 2022UniMSE: Towards Unified Multimodal Sentiment Analysis and Emotion Recognitioncited by 61
- 2024A Full-duplex Speech Dialogue Scheme Based On Large Language Modelscited by 40
- 2023Transformers in Speech Processing: A Surveycited by 38
- 2022Proton: Probing Schema Linking Information from Pre-trained Language Models for Text-to-SQL Parsingcited by 30
- 2023UniSA: Unified Generative Framework for Sentiment Analysiscited by 17
- 2024SSR: Alignment-Aware Modality Connector for Speech Language Modelscited by 16
- 2025FlexDuo: A Pluggable System for Enabling Full-Duplex Capabilities in Speech Dialogue Systemscited by 15
- 2023Speech-Text Dialog Pre-training for Spoken Dialog Understanding with Explicit Cross-Modal Alignmentcited by 13
- 2025Applying General Turn-taking Models to Conversational Human-Robot Interactioncited by 13
- 2023Unsupervised Dialogue Topic Segmentation with Topic-aware Utterance Representationcited by 11
- 2025Easy Turn: Integrating Acoustic and Linguistic Modalities for Robust Turn-Taking in Full-Duplex Spoken Dialogue Systemscited by 11
12 most cited of 25 All 25 (JSON)
- 2026Neither Silence nor Overlap Is Failure: Intent-Conditioned Evaluation of Turn-Taking in Full-Duplex Spoken Dialogue Models23 Sep 2026
- 2026Training Intelligent Voice Assistant Wakeup with Controllable Synthetic Conversations22 Sep 2026
- 2026Does Listening Matter? Backchanneling and Nodding in AI Clone20 Aug 2026
- 2026Hierarchical Acoustic-Semantic Modeling: Modality Separation and Semantic Coherence for Full-Duplex SLMs7 Jul 2026
- 2025Easy Turn: Integrating Acoustic and Linguistic Modalities for Robust Turn-Taking in Full-Duplex Spoken Dialogue Systems28 Sep 2025
- 2025Voila: Voice-Language Foundation Models for Real-Time Autonomous Interaction and Voice Role-Play5 May 2025
- 2025Speculative End-Turn Detector for Efficient Speech Chatbot Assistant30 Mar 2025
- 2025Telephone Surveys Meet Conversational AI: Evaluating a LLM-Based Telephone Survey System at Scale27 Feb 2025
- 2025LLM-Enhanced Dialogue Management for Full-Duplex Spoken Dialogue Systems19 Feb 2025
- 2025FlexDuo: A Pluggable System for Enabling Full-Duplex Capabilities in Speech Dialogue Systems19 Feb 2025
- 2025Affective and Conversational Predictors of Re-Engagement in Human-Robot Interactions -- A Student-Centered Study with A Humanoid Social Robot18 Feb 2025
- 2025Applying General Turn-taking Models to Conversational Human-Robot Interaction15 Jan 2025
12 newest of 25 All 25 (JSON)