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David Harwath

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#natural language process... Preprint Oct 2026

ASSET: Adaptive Speech Segmentation via Reinforcement Learning

Speech large language models (LLMs) are often built using pretrained acoustic encoders as an audio interface to an LLM decoder. However, LLMs scale poorly with input sequence length, while acoustic encoders tend to produce substantially longer sequences than typical textual inputs. This motivates learning to compress e...

Ci-Han Xiao, Yuan Tseng, Matthew Wiesner et al. · 0 citations
Preprint Sep 2026

SPADE: A Multilingual Dataset for Speech Partial Deepfake Detection and Localization

Recent improvements in voice-cloning speech generation systems raise concerns about misuse by malicious actors to impersonate others and spread misinformation. Detecting such tampering is difficult, since deepfakes in the wild may be created by different generative models in a wide range of languages. Furthermore, the...

Yuan Tseng, Aishwarya Fursule, Andrew Zijun Ma et al. · 0 citations
Preprint Sep 2026

Voices as Handles: Reasoning about Speaker Identity with Frozen Text LLMs

Multi-user voice agents must track who said what across dialogue sessions. Text LLMs are attractive backbones for such agents, but transcripts alone do not expose acoustic speaker identity, leaving the model without a persistent reference for linking information to speakers across sessions. We address this gap by intro...

Run-Qiu Xu, Zhi-Sheng Zheng, David Harwath · 0 citations
#natural language process... Preprint Sep 2026

Quantifying Consonant Contributions to Word Intelligibility via Acoustic Masking

This paper presents a scalable method that measures consonant contribution using acoustic masking, and relates MMR to two linguistic factors previously reported to correlate with consonant contribution, namely phoneme frequency and functional load.

Eunjung Yeo, Kwanghee Choi, K. Kothadia et al. · 0 citations
#artificial intelligence Preprint Sep 2026

MP-Bench: Evaluating Voice Agents as a Multiparty Conversation Participant

Multiparty Bench is introduced, the first benchmark specifically designed to objectively evaluate conversational speech systems as active participants within multi-party contexts and assesses agent behavior along two primary dimensions: turn-taking awareness and response appropriateness.

Yi-Jen Shih, Shih-Yun-Shan Kuan, Guan-Ting Lin et al. · 2 citations · ⚡1
Preprint Aug 2026

CtrlSpeech: Coarse-to-Fine Control for Expressive Speech Synthesis

Experimental results show that CtrlSpeech achieves competitive zero-shot TTS performance and improves controllability over expressive attributes, demonstrating its effectiveness for flexible and practical expressive speech synthesis.

Zhi-Sheng Zheng, Xiaohang Sun, Zhu Liu et al. · 0 citations
#artificial intelligence Preprint Sep 2026

RetroThinker: Enabling Retrospective Thinking in Speech LLMs

Speech large language models (SpeechLLMs) offer reduced latency and retain paralinguistic nuances that are typically lost in cascaded automatic speech recognition (ASR) and text-based LM architectures. However, they continue to lag behind text-only LLMs on complex reasoning tasks, while real-time spoken interaction imp...

Yi-Jen Shih, Pu-Yuan Peng, Abdel-rahman Mohamed et al. · 1 citation

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