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The remarkable ability of diffusion models to generate high-fidelity images has led to their widespread adoption. However, concerns have also arisen regarding their potential to produce Not Safe for Work (NSFW) content and exhibit social…

Computation and Language · Computer Science 2025-05-22 Zhiwen Li , Die Chen , Mingyuan Fan , Cen Chen , Yaliang Li , Yanhao Wang , Wenmeng Zhou

Emotion Recognition in Conversation (ERC) is critical for enabling natural human-machine interactions. However, existing methods predominantly employ categorical or dimensional emotion annotations, which often fail to adequately represent…

Computation and Language · Computer Science 2026-03-10 Yoshiki Tanaka , Ryuichi Uehara , Koji Inoue , Michimasa Inaba

Recently, the application of diffusion probabilistic models has advanced speech enhancement through generative approaches. However, existing diffusion-based methods have focused on the generation process in high-dimensional waveform or…

Sound · Computer Science 2025-01-20 Shengkui Zhao , Zexu Pan , Kun Zhou , Yukun Ma , Chong Zhang , Bin Ma

Human emotional speech is, by its very nature, a variant signal. This results in dynamics intrinsic to automatic emotion classification based on speech. In this work, we explore a spectral decomposition method stemming from fluid-dynamics,…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-18 Shuiyang Mao , P. C. Ching , Tan Lee

Any-to-any singing voice conversion (SVC) aims to transfer a target singer's timbre to other songs using a short voice sample. However many diffusion model based any-to-any SVC methods, which have achieved impressive results, usually…

Audio and Speech Processing · Electrical Eng. & Systems 2024-08-23 Shihao Chen , Yu Gu , Jianwei Cui , Jie Zhang , Rilin Chen , Lirong Dai

A diffusion-based voice conversion (VC) model (e.g., VoiceGrad) can achieve high speech quality and speaker similarity; however, its conversion process is slow owing to iterative sampling. FastVoiceGrad overcomes this limitation by…

Sound · Computer Science 2025-08-26 Takuhiro Kaneko , Hirokazu Kameoka , Kou Tanaka , Yuto Kondo

In this work, we present DiffVoice, a novel text-to-speech model based on latent diffusion. We propose to first encode speech signals into a phoneme-rate latent representation with a variational autoencoder enhanced by adversarial training,…

Audio and Speech Processing · Electrical Eng. & Systems 2023-04-25 Zhijun Liu , Yiwei Guo , Kai Yu

Generating emotion-specific talking head videos from audio input is an important and complex challenge for human-machine interaction. However, emotion is highly abstract concept with ambiguous boundaries, and it necessitates disentangled…

Computer Vision and Pattern Recognition · Computer Science 2025-04-03 Xuli Shen , Hua Cai , Dingding Yu , Weilin Shen , Qing Xu , Xiangyang Xue

Emotional talking head generation has attracted growing attention. Previous methods, which are mainly GAN-based, still struggle to consistently produce satisfactory results across diverse emotions and cannot conveniently specify…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Yifeng Ma , Shiwei Zhang , Jiayu Wang , Xiang Wang , Yingya Zhang , Zhidong Deng

State-of-the-art speech synthesis models try to get as close as possible to the human voice. Hence, modelling emotions is an essential part of Text-To-Speech (TTS) research. In our work, we selected FastSpeech2 as the starting point and…

Audio and Speech Processing · Electrical Eng. & Systems 2023-07-04 Daria Diatlova , Vitaly Shutov

Recent methods in flow-based diffusion editing have enabled direct transformations between source and target image distribution without explicit inversion. However, the latent trajectories in these methods often exhibit accumulated velocity…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Zixiang Li , Yue Song , Jianing Peng , Ting Liu , Jun Huang , Xiaochao Qu , Luoqi Liu , Wei Wang , Yao Zhao , Yunchao Wei

We introduce \textbf{Evo}, a duality latent trajectory model that bridges autoregressive (AR) and diffusion-based language generation within a continuous evolutionary generative framework. Rather than treating AR decoding and diffusion…

Machine Learning · Computer Science 2026-03-10 Junde Wu , Minhao Hu , Jiayuan Zhu , Yuyuan Liu , Tianyi Zhang , Kang Li , Jingkun Chen , Jiazhen Pan , Min Xu , Yueming Jin

Recently large-scale language-image models (e.g., text-guided diffusion models) have considerably improved the image generation capabilities to generate photorealistic images in various domains. Based on this success, current image editing…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Wenkai Dong , Song Xue , Xiaoyue Duan , Shumin Han

Speech emotion recognition (SER) systems are constrained by existing datasets that typically cover only 6-10 basic emotions, lack scale and diversity, and face ethical challenges when collecting sensitive emotional states. We introduce…

Finding an initial noise vector that produces an input image when fed into the diffusion process (known as inversion) is an important problem in denoising diffusion models (DDMs), with applications for real image editing. The…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Bram Wallace , Akash Gokul , Nikhil Naik

We introduce a novel diffusion-based video generation method, generating a video showing multiple events given multiple individual sentences from the user. Our method does not require a large-scale video dataset since our method uses a…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Gyeongrok Oh , Jaehwan Jeong , Sieun Kim , Wonmin Byeon , Jinkyu Kim , Sungwoong Kim , Sangpil Kim

As large-scale language models become the standard for text generation, there is a greater need to tailor the generations to be more or less concise, targeted, and informative, depending on the audience/application. Existing control…

Computation and Language · Computer Science 2024-02-23 Samraj Moorjani , Adit Krishnan , Hari Sundaram

Transfer learning has been widely used in natural language processing through deep pretrained language models, such as Bidirectional Encoder Representations from Transformers and Universal Sentence Encoder. Despite the great success,…

Information Retrieval · Computer Science 2022-06-15 Maryam Hasan , Elke Rundensteiner , Emmanuel Agu

Voice conversion (VC) transforms an utterance to sound like another person without changing the linguistic content. A recently proposed generative adversarial network-based VC method, StarGANv2-VC is very successful in generating…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-15 Arnab Das , Suhita Ghosh , Tim Polzehl , Sebastian Stober

Emotion plays a pivotal role in video-based expression, but existing video generation systems predominantly focus on low-level visual metrics while neglecting affective dimensions. Although emotion analysis has made progress in the visual…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Zongyang Qiu , Bingyuan Wang , Xingbei Chen , Yingqing He , Zeyu Wang