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Diffusion-based text-to-image generative models, e.g., Stable Diffusion, have revolutionized the field of content generation, enabling significant advancements in areas like image editing and video synthesis. Despite their formidable…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Yanyu Li , Xian Liu , Anil Kag , Ju Hu , Yerlan Idelbayev , Dhritiman Sagar , Yanzhi Wang , Sergey Tulyakov , Jian Ren

Expressive text-to-speech systems have undergone significant advancements owing to prosody modeling, but conventional methods can still be improved. Traditional approaches have relied on the autoregressive method to predict the quantized…

Sound · Computer Science 2025-01-22 Hyung-Seok Oh , Sang-Hoon Lee , Seong-Whan Lee

Diffusion models have emerged as powerful deep generative techniques, producing high-quality and diverse samples in applications in various domains including audio. While existing reviews provide overviews, there remains limited in-depth…

Sound · Computer Science 2026-01-16 Ge Zhu , Yutong Wen , Zhiyao Duan

Audio language models have recently emerged as a promising approach for various audio generation tasks, relying on audio tokenizers to encode waveforms into sequences of discrete symbols. Audio tokenization often poses a necessary…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-11 Zhijun Liu , Shuai Wang , Sho Inoue , Qibing Bai , Haizhou Li

Diffusion models (DMs) have become the new trend of generative models and have demonstrated a powerful ability of conditional synthesis. Among those, text-to-image diffusion models pre-trained on large-scale image-text pairs are highly…

Computer Vision and Pattern Recognition · Computer Science 2023-03-06 Wenliang Zhao , Yongming Rao , Zuyan Liu , Benlin Liu , Jie Zhou , Jiwen Lu

This paper introduces WaveGrad 2, a non-autoregressive generative model for text-to-speech synthesis. WaveGrad 2 is trained to estimate the gradient of the log conditional density of the waveform given a phoneme sequence. The model takes an…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-22 Nanxin Chen , Yu Zhang , Heiga Zen , Ron J. Weiss , Mohammad Norouzi , Najim Dehak , William Chan

Video generation powers a vast array of downstream applications. However, while the de facto standard, i.e., latent diffusion models, typically employ heavily conditioned denoising networks, their decoders often remain unconditional. We…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Xiang Fan , Yuheng Wang , Bohan Fang , Zhongzheng Ren , Ranjay Krishna

Nowadays, scene text recognition has attracted more and more attention due to its diverse applications. Most state-of-the-art methods adopt an encoder-decoder framework with the attention mechanism, autoregressively generating text from…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Xiaomeng Yang , Zhi Qiao , Yu Zhou

We introduce SeeingSounds, a lightweight and modular framework for audio-to-image generation that leverages the interplay between audio, language, and vision-without requiring any paired audio-visual data or training on visual generative…

Diffusion models have significantly improved the quality and diversity of audio generation but are hindered by slow inference speed. Rectified flow enhances inference speed by learning straight-line ordinary differential equation (ODE)…

Sound · Computer Science 2025-05-29 Junqi Zhao , Jinzheng Zhao , Haohe Liu , Yun Chen , Lu Han , Xubo Liu , Mark Plumbley , Wenwu Wang

In this paper, we are interested in unsupervised (unknown noise) audio-visual speech enhancement based on variational autoencoders (VAEs), where the probability distribution of clean speech spectra is simulated using an encoder-decoder…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-10 Mostafa Sadeghi , Xavier Alameda-Pineda

The immense scale of the recent large language models (LLM) allows many interesting properties, such as, instruction- and chain-of-thought-based fine-tuning, that has significantly improved zero- and few-shot performance in many natural…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-30 Deepanway Ghosal , Navonil Majumder , Ambuj Mehrish , Soujanya Poria

In text-to-speech (TTS) and voice conversion (VC), acoustic features, such as mel spectrograms, are typically used as synthesis or conversion targets owing to their compactness and ease of learning. However, because the ultimate goal is to…

Sound · Computer Science 2025-08-28 Takuhiro Kaneko , Hirokazu Kameoka , Kou Tanaka , Yuto Kondo

Since the introduction of Generative Adversarial Networks (GANs) in speech synthesis, remarkable achievements have been attained. In a thorough exploration of vocoders, it has been discovered that audio waveforms can be generated at speeds…

Audio and Speech Processing · Electrical Eng. & Systems 2024-08-14 Yubing Cao , Yongming Li , Liejun Wang , Yinfeng Yu

Recently, diffusion models have emerged as a new paradigm for generative models. Despite the success in domains using continuous signals such as vision and audio, adapting diffusion models to natural language is under-explored due to the…

Computation and Language · Computer Science 2023-02-15 Shansan Gong , Mukai Li , Jiangtao Feng , Zhiyong Wu , Lingpeng Kong

Denoising diffusion probabilistic models (diffusion models for short) require a large number of iterations in inference to achieve the generation quality that matches or surpasses the state-of-the-art generative models, which invariably…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-10 Zehua Chen , Xu Tan , Ke Wang , Shifeng Pan , Danilo Mandic , Lei He , Sheng Zhao

As the basis of generative AI, an autoregressive model requires the generation of a new token depending on all the previously generated tokens, which brings high quality but also restricts the model to generate tokens one by one, forming a…

Computation and Language · Computer Science 2025-07-02 Zixian Huang , Chenxu Niu , Yu Gu , Gengyang Xiao , Xinwei Huang , Gong Cheng

Text-conditioned image generation models are a prevalent use of AI image synthesis, yet intuitively controlling output guided by an artist remains challenging. Current methods require multiple images and textual prompts for each object to…

Computer Vision and Pattern Recognition · Computer Science 2024-01-02 Shounak Chatterjee

Denoising Diffusion models have shown remarkable performance in generating diverse, high quality images from text. Numerous techniques have been proposed on top of or in alignment with models like Stable Diffusion and Imagen that generate…

Despite advancements in Text-to-Video (T2V) generation, producing videos with realistic motion remains challenging. Current models often yield static or minimally dynamic outputs, failing to capture complex motions described by text. This…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Penghui Ruan , Pichao Wang , Divya Saxena , Jiannong Cao , Yuhui Shi