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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…

声音 · 计算机科学 2025-01-22 Hyung-Seok Oh , Sang-Hoon Lee , Seong-Whan Lee

Lidar point cloud synthesis based on generative models offers a promising solution to augment deep learning pipelines, particularly when real-world data is scarce or lacks diversity. By enabling flexible object manipulation, this synthesis…

计算机视觉与模式识别 · 计算机科学 2025-07-01 Zhengkang Xiang , Zizhao Li , Amir Khodabandeh , Kourosh Khoshelham

Autoregressive (AR) models remain the standard for natural language generation but still suffer from high latency due to strictly sequential decoding. Recent diffusion-inspired approaches, such as LlaDA and Dream, mitigate this by…

计算与语言 · 计算机科学 2025-10-16 Qinglin Zhu , Yizhen Yao , Runcong Zhao , Yanzheng Xiang , Amrutha Saseendran , Chen Jin , Philip Teare , Bin Liang , Yulan He , Lin Gui

Online Speech Enhancement was mainly reserved for predictive models. A key advantage of these models is that for an incoming signal frame from a stream of data, the model is called only once for enhancement. In contrast, generative Speech…

音频与语音处理 · 电气工程与系统科学 2025-10-22 Bunlong Lay , Rostislav Makarov , Simon Welker , Maris Hillemann , Timo Gerkmann

Deep generative models can generate high-fidelity audio conditioned on various types of representations (e.g., mel-spectrograms, Mel-frequency Cepstral Coefficients (MFCC)). Recently, such models have been used to synthesize audio waveforms…

Despite imperfect score-matching causing drift in training and sampling distributions of diffusion models, recent advances in diffusion-based acoustic models have revolutionized data-sufficient single-speaker Text-to-Speech (TTS)…

音频与语音处理 · 电气工程与系统科学 2023-09-01 Heyang Xue , Shuai Guo , Pengcheng Zhu , Mengxiao Bi

Previous works (Donahue et al., 2018a; Engel et al., 2019a) have found that generating coherent raw audio waveforms with GANs is challenging. In this paper, we show that it is possible to train GANs reliably to generate high quality…

音频与语音处理 · 电气工程与系统科学 2019-12-10 Kundan Kumar , Rithesh Kumar , Thibault de Boissiere , Lucas Gestin , Wei Zhen Teoh , Jose Sotelo , Alexandre de Brebisson , Yoshua Bengio , Aaron Courville

Diffusion models have achieved state-of-the-art image generation. However, the random Gaussian noise used to start the diffusion process influences the final output, causing variations in image quality and prompt adherence. Existing…

计算机视觉与模式识别 · 计算机科学 2025-09-18 Harvey Mannering , Zhiwu Huang , Adam Prugel-Bennett

Diffusion models are a new class of generative models that have recently been applied to speech enhancement successfully. Previous works have demonstrated their superior performance in mismatched conditions compared to state-of-the art…

音频与语音处理 · 电气工程与系统科学 2024-09-10 Philippe Gonzalez , Zheng-Hua Tan , Jan Østergaard , Jesper Jensen , Tommy Sonne Alstrøm , Tobias May

We show that diffusion models can achieve image sample quality superior to the current state-of-the-art generative models. We achieve this on unconditional image synthesis by finding a better architecture through a series of ablations. For…

机器学习 · 计算机科学 2021-06-02 Prafulla Dhariwal , Alex Nichol

Neural vocoder using denoising diffusion probabilistic model (DDPM) has been improved by adaptation of the diffusion noise distribution to given acoustic features. In this study, we propose SpecGrad that adapts the diffusion noise so that…

音频与语音处理 · 电气工程与系统科学 2022-08-08 Yuma Koizumi , Heiga Zen , Kohei Yatabe , Nanxin Chen , Michiel Bacchiani

Joint machine learning models that allow synthesizing and classifying data often offer uneven performance between those tasks or are unstable to train. In this work, we depart from a set of empirical observations that indicate the…

机器学习 · 计算机科学 2023-04-06 Kamil Deja , Tomasz Trzcinski , Jakub M. Tomczak

Architectures such as Linformer and Mamba have recently emerged as competitive linear time replacements for transformers. However, corresponding large pretrained models are often unavailable, especially in non-text domains. To remedy this,…

计算与语言 · 计算机科学 2025-03-14 Mutian He , Philip N. Garner

Speech enhancement involves the distinction of a target speech signal from an intrusive background. Although generative approaches using Variational Autoencoders or Generative Adversarial Networks (GANs) have increasingly been used in…

音频与语音处理 · 电气工程与系统科学 2021-06-17 Martin Strauss , Bernd Edler

Diffusion models are rising as a powerful solution for high-fidelity image generation, which exceeds GANs in quality in many circumstances. However, their slow training and inference speed is a huge bottleneck, blocking them from being used…

计算机视觉与模式识别 · 计算机科学 2023-03-24 Hao Phung , Quan Dao , Anh Tran

We introduce LlamaGen, a new family of image generation models that apply original ``next-token prediction'' paradigm of large language models to visual generation domain. It is an affirmative answer to whether vanilla autoregressive…

计算机视觉与模式识别 · 计算机科学 2024-06-11 Peize Sun , Yi Jiang , Shoufa Chen , Shilong Zhang , Bingyue Peng , Ping Luo , Zehuan Yuan

A fundamental objective of manipulation policy design is to endow robots to comprehend human instructions, reason about scene cues, and execute generalized actions in dynamic environments. Recent autoregressive vision-language-action (VLA)…

In this work, we propose DiffWave, a versatile diffusion probabilistic model for conditional and unconditional waveform generation. The model is non-autoregressive, and converts the white noise signal into structured waveform through a…

音频与语音处理 · 电气工程与系统科学 2021-04-01 Zhifeng Kong , Wei Ping , Jiaji Huang , Kexin Zhao , Bryan Catanzaro

In recent years generative adversarial network (GAN) based models have been successfully applied for unsupervised speech-to-speech conversion.The rich compact harmonic view of the magnitude spectrogram is considered a suitable choice for…

音频与语音处理 · 电气工程与系统科学 2020-05-20 Mohammad Asif Khan , Fabien Cardinaux , Stefan Uhlich , Marc Ferras , Asja Fischer

In speech synthesis and speech enhancement systems, melspectrograms need to be precise in acoustic representations. However, the generated spectrograms are over-smooth, that could not produce high quality synthesized speech. Inspired by…

音频与语音处理 · 电气工程与系统科学 2019-12-04 Leyuan Sheng , Dong-Yan Huang , Evgeniy N. Pavlovskiy