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Existing rectified flow models are based on linear trajectories between data and noise distributions. This linearity enforces zero curvature, which can inadvertently force the image generation process through low-probability regions of the…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Yan Luo , Drake Du , Hao Huang , Yi Fang , Mengyu Wang

We consider the problem of single-channel audio source separation with the goal of reconstructing $K$ sources from their mixture. We address this ill-posed problem with FLOSS (FLOw matching for Source Separation), a constrained generation…

Sound · Computer Science 2025-07-21 Robin Scheibler , John R. Hershey , Arnaud Doucet , Henry Li

Coordinated audio generation based on video inputs typically requires a strict audio-visual (AV) alignment, where both semantics and rhythmics of the generated audio segments shall correspond to those in the video frames. Previous studies…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Shentong Mo , Yibing Song

Generative models have shown great potential in trajectory planning. Recent studies demonstrate that anchor-guided generative models are effective in modeling the uncertainty of driving behaviors and improving overall performance. However,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Junli Wang , Yinan Zheng , Xueyi Liu , Zebin Xing , Pengfei Li , Guang Li , Kun Ma , Guang Chen , Hangjun Ye , Zhongpu Xia , Long Chen , Qichao Zhang

We present StreamVC, a streaming voice conversion solution that preserves the content and prosody of any source speech while matching the voice timbre from any target speech. Unlike previous approaches, StreamVC produces the resulting…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-09 Yang Yang , Yury Kartynnik , Yunpeng Li , Jiuqiang Tang , Xing Li , George Sung , Matthias Grundmann

Autoregressive (AR) models with diffusion heads have recently achieved strong text-to-audio performance, yet their iterative decoding and multi-step sampling process introduce high-latency issues. To address this bottleneck, we propose a…

We present FlowLM, a flow matching language model transformed from pre-trained diffusion language models via efficient fine-tuning. By re-aligning the curved sampling trajectories of diffusion models into straight-line flows, FlowLM enables…

Computation and Language · Computer Science 2026-05-21 Runzhe Zhang , Letian Chen , Wenpeng Zhang , Zhouhan Lin , Peilin Zhao

Voice conversion (VC) modifies voice characteristics while preserving linguistic content. This paper presents the Stepback network, a novel model for converting speaker identity using non-parallel data. Unlike traditional VC methods that…

Sound · Computer Science 2025-01-28 Qian Yang , Calbert Graham

Recent progress of voice conversion~(VC) has achieved a new milestone in speaker cloning and linguistic preservation. But the field remains fragmented, relying on specialized models for linguistic-preserving, expressive, and singing…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-22 Zhichao Wang , Tao Li , Wenshuo Ge , Zihao Cui , Shilei Zhang , Junlan Feng

Although voice conversion (VC) systems have shown a remarkable ability to transfer voice style, existing methods still have an inaccurate pitch and low speaker adaptation quality. To address these challenges, we introduce Diff-HierVC, a…

Audio and Speech Processing · Electrical Eng. & Systems 2023-11-09 Ha-Yeong Choi , Sang-Hoon Lee , Seong-Whan Lee

Normalizing flows are a class of probabilistic generative models which allow for both fast density computation and efficient sampling and are effective at modelling complex distributions like images. A drawback among current methods is…

Computer Vision and Pattern Recognition · Computer Science 2020-10-28 Jason J. Yu , Konstantinos G. Derpanis , Marcus A. Brubaker

In real-world voice conversion applications, environmental noise in source speech and user demands for expressive output pose critical challenges. Traditional ASR-based methods ensure noise robustness but suppress prosody richness, while…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-11 Yuepeng Jiang , Ziqian Ning , Shuai Wang , Chengjia Wang , Mengxiao Bi , Pengcheng Zhu , Zhonghua Fu , Lei Xie

In this work, we propose a zero-shot voice conversion method using speech representations trained with self-supervised learning. First, we develop a multi-task model to decompose a speech utterance into features such as linguistic content,…

Sound · Computer Science 2023-02-17 Shehzeen Hussain , Paarth Neekhara , Jocelyn Huang , Jason Li , Boris Ginsburg

Recent advances in large multi-modal generative models have demonstrated impressive capabilities in multi-modal generation, including image and video generation. These models are typically built upon multi-step frameworks like diffusion and…

Computer Vision and Pattern Recognition · Computer Science 2026-01-29 Zhenglin Cheng , Peng Sun , Jianguo Li , Tao Lin

Voice conversion (VC) is a task that transforms voice from target audio to source without losing linguistic contents, it is challenging especially when source and target speakers are unseen during training (zero-shot VC). Previous…

Sound · Computer Science 2021-04-14 Shijun Wang , Damian Borth

Recent advances in generative models, such as diffusion and flow matching, have shown strong performance in audio tasks. However, speech enhancement (SE) models are typically trained on limited datasets and evaluated under narrow…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-24 Tianyu Cao , Helin Wang , Ari Frummer , Yuval Sieradzki , Adi Arbel , Laureano Moro Velazquez , Jesus Villalba , Oren Gal , Thomas Thebaud , Najim Dehak

Generating spoken dialogue is inherently more complex than monologue text-to-speech (TTS), as it demands both realistic turn-taking and the maintenance of distinct speaker timbres. While existing autoregressive (AR) models have made…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-15 Han Zhu , Wei Kang , Liyong Guo , Zengwei Yao , Fangjun Kuang , Weiji Zhuang , Zhaoqing Li , Zhifeng Han , Dong Zhang , Xin Zhang , Xingchen Song , Lingxuan Ye , Long Lin , Daniel Povey

Flow map models such as Consistency Models (CM) and Mean Flow (MF) enable few-step generation by learning the long jump of the ODE solution of diffusion models, yet training remains unstable, sensitive to hyperparameters, and costly.…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Zheyuan Hu , Chieh-Hsin Lai , Yuki Mitsufuji , Stefano Ermon

Diffusion models have achieved remarkable generation quality, but they suffer from significant inference cost due to their reliance on multiple sequential denoising steps, motivating recent efforts to distill this inference process into a…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Zihan Yang , Shuyuan Tu , Licheng Zhang , Qi Dai , Yu-Gang Jiang , Zuxuan Wu

Flow-matching models deliver state-of-the-art fidelity in image and video generation, but the inherent sequential denoising process renders them slower. Existing acceleration methods like distillation, trajectory truncation, and consistency…

Computer Vision and Pattern Recognition · Computer Science 2026-02-12 Divya Jyoti Bajpai , Dhruv Bhardwaj , Soumya Roy , Tejas Duseja , Harsh Agarwal , Aashay Sandansing , Manjesh Kumar Hanawal