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Flow matching offers a robust and stable approach to training diffusion models. However, directly applying flow matching to neural vocoders can result in subpar audio quality. In this work, we present WaveFM, a reparameterized flow matching…

Sound · Computer Science 2025-03-24 Tianze Luo , Xingchen Miao , Wenbo Duan

Building a single universal speech enhancement (SE) system that can handle arbitrary input is a demanded but underexplored research topic. Towards this ultimate goal, one direction is to build a single model that handles diverse audio…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-19 Wangyou Zhang , Jee-weon Jung , Shinji Watanabe , Yanmin Qian

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

Speech Bandwidth Extension improves clarity and intelligibility by restoring/inferring appropriate high-frequency content for low-bandwidth speech. Existing methods often rely on spectrogram or waveform modeling, which can incur higher…

Sound · Computer Science 2026-03-04 Bowen Zhang , Junchuan Zhao , Ian McLoughlin , Ye Wang , A S Madhukumar

Building a voice conversion system for noisy target speakers, such as users providing noisy samples or Internet found data, is a challenging task since the use of contaminated speech in model training will apparently degrade the conversion…

Sound · Computer Science 2022-07-05 Liumeng Xue , Shan Yang , Na Hu , Dan Su , Lei Xie

Automatic speech synthesis is a challenging task that is becoming increasingly important as edge devices begin to interact with users through speech. Typical text-to-speech pipelines include a vocoder, which translates intermediate audio…

Sound · Computer Science 2020-01-17 Bohan Zhai , Tianren Gao , Flora Xue , Daniel Rothchild , Bichen Wu , Joseph E. Gonzalez , Kurt Keutzer

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

While many recent any-to-any voice conversion models succeed in transferring some target speech's style information to the converted speech, they still lack the ability to faithfully reproduce the speaking style of the target speaker. In…

Audio and Speech Processing · Electrical Eng. & Systems 2023-12-18 Hyungseob Lim , Kyungguen Byun , Sunkuk Moon , Erik Visser

Audio domain transfer is the process of modifying audio signals to match characteristics of a different domain, while retaining the original content. This paper investigates the potential of Gaussian Flow Bridges, an emerging approach in…

Audio and Speech Processing · Electrical Eng. & Systems 2024-05-31 Eloi Moliner , Sebastian Braun , Hannes Gamper

The intrinsic link between facial motion and speech is often overlooked in generative modeling, where talking head synthesis and text-to-speech (TTS) are typically addressed as separate tasks. This paper introduces JAM-Flow, a unified…

Computer Vision and Pattern Recognition · Computer Science 2026-05-18 Mingi Kwon , Joonghyuk Shin , Jaeseok Jung , Jaesik Park , Youngjung Uh

Recently, sequence-to-sequence (seq-to-seq) models have been successfully applied in text-to-speech (TTS) to synthesize speech for single-language text. To synthesize speech for multiple languages usually requires multi-lingual speech from…

Sound · Computer Science 2022-11-18 Haitong Zhang , Yue Lin

Generative models are capable to address difficult problems with non-unique solutions like bandwidth extension and gap filling, removing highly non-linear artifacts from codecs, clipping and distortion, as opposed to removing linear…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-18 Sebastian Braun

Audio is an essential part of our life, but creating it often requires expertise and is time-consuming. Research communities have made great progress over the past year advancing the performance of large scale audio generative models for a…

This paper presents the design of Glow, a machine learning compiler for heterogeneous hardware. It is a pragmatic approach to compilation that enables the generation of highly optimized code for multiple targets. Glow lowers the traditional…

Normalizing flows (NFs) have become a prominent method for deep generative models that allow for an analytic probability density estimation and efficient synthesis. However, a flow-based network is considered to be inefficient in parameter…

Machine Learning · Computer Science 2020-10-26 Sang-gil Lee , Sungwon Kim , Sungroh Yoon

We introduce CAFLOW, a new diverse image-to-image translation model that simultaneously leverages the power of auto-regressive modeling and the modeling efficiency of conditional normalizing flows. We transform the conditioning image into a…

Computer Vision and Pattern Recognition · Computer Science 2021-06-07 Georgios Batzolis , Marcello Carioni , Christian Etmann , Soroosh Afyouni , Zoe Kourtzi , Carola Bibiane Schönlieb

Semi-structured interviews are a common method in qualitative research. However, conducting high-quality interviews is cognitively demanding and requires strong interviewing skills. To lower this bar, we propose InterFlow, an AI-powered…

Human-Computer Interaction · Computer Science 2026-03-03 Yi Wen , Yu Zhang , Sriram Suresh , Zhicong Lu , Can Liu , Meng Xia

This paper proposes a full-band and sub-band fusion model, named as FullSubNet, for single-channel real-time speech enhancement. Full-band and sub-band refer to the models that input full-band and sub-band noisy spectral feature, output…

Audio and Speech Processing · Electrical Eng. & Systems 2024-07-04 Xiang Hao , Xiangdong Su , Radu Horaud , Xiaofei Li

This paper proposes a general enhancement to the Normalizing Flows (NF) used in neural vocoding. As a case study, we improve expressive speech vocoding with a revamped Parallel Wavenet (PW). Specifically, we propose to extend the affine…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-17 Adam Gabryś , Yunlong Jiao , Viacheslav Klimkov , Daniel Korzekwa , Roberto Barra-Chicote

Zero-shot voice conversion aims to transfer the voice of a source speaker to that of a speaker unseen during training, while preserving the content information. Although various methods have been proposed to reconstruct speaker information…

Sound · Computer Science 2024-08-22 Anastasia Avdeeva , Aleksei Gusev