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Computational fluid dynamics (CFD) provides high-fidelity simulations of fluid flows but remains computationally expensive for many-query applications. In recent years deep learning (DL) has been used to construct data-driven fluid-dynamic…

Machine Learning · Computer Science 2026-04-13 David Ramos , Lucas Lacasa , Fermín Gutiérrez , Eusebio Valero , Gonzalo Rubio

Recent advances in deep learning for sequential data have given rise to fast and powerful models that produce realistic videos of talking humans. The state of the art in talking face generation focuses mainly on lip-syncing, being…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Georgios Milis , Panagiotis P. Filntisis , Anastasios Roussos , Petros Maragos

Non-autoregressive text to speech (TTS) models such as FastSpeech can synthesize speech significantly faster than previous autoregressive models with comparable quality. The training of FastSpeech model relies on an autoregressive teacher…

Audio and Speech Processing · Electrical Eng. & Systems 2022-08-09 Yi Ren , Chenxu Hu , Xu Tan , Tao Qin , Sheng Zhao , Zhou Zhao , Tie-Yan Liu

This paper proposes a modeling-by-generation (MbG) excitation vocoder for a neural text-to-speech (TTS) system. Recently proposed neural excitation vocoders can realize qualified waveform generation by combining a vocal tract filter with a…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-04 Eunwoo Song , Min-Jae Hwang , Ryuichi Yamamoto , Jin-Seob Kim , Ohsung Kwon , Jae-Min Kim

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

In this work, we propose WaveFlow, a small-footprint generative flow for raw audio, which is directly trained with maximum likelihood. It handles the long-range structure of 1-D waveform with a dilated 2-D convolutional architecture, while…

Sound · Computer Science 2020-06-26 Wei Ping , Kainan Peng , Kexin Zhao , Zhao Song

While generative Text-to-Speech (TTS) systems leverage vast ``in-the-wild" data to achieve remarkable success, speech-to-speech processing tasks like enhancement face data limitations, which lead data-hungry generative approaches to distort…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-19 Justin Lovelace , Rithesh Kumar , Jiaqi Su , Ke Chen , Kilian Q Weinberger , Zeyu Jin

Recent studies suggest utilizing generative models instead of traditional auto-regressive algorithms for time series forecasting (TSF) tasks. These non-auto-regressive approaches involving different generative methods, including GAN,…

Machine Learning · Computer Science 2025-03-19 Jiangxuan Long , Zhao Song , Chiwun Yang

Classical parametric speech coding techniques provide a compact representation for speech signals. This affords a very low transmission rate but with a reduced perceptual quality of the reconstructed signals. Recently, autoregressive deep…

Audio and Speech Processing · Electrical Eng. & Systems 2019-07-02 Ahmed Mustafa , Arijit Biswas , Christian Bergler , Julia Schottenhamml , Andreas Maier

Recent speech synthesis systems based on sampling from autoregressive neural networks models can generate speech almost undistinguishable from human recordings. However, these models require large amounts of data. This paper shows that the…

Computation and Language · Computer Science 2018-11-26 Javier Latorre , Jakub Lachowicz , Jaime Lorenzo-Trueba , Thomas Merritt , Thomas Drugman , Srikanth Ronanki , Klimkov Viacheslav

We present a novel approach to data-to-text generation based on iterative text editing. Our approach maximizes the completeness and semantic accuracy of the output text while leveraging the abilities of recent pre-trained models for text…

Computation and Language · Computer Science 2021-01-29 Zdeněk Kasner , Ondřej Dušek

Textless spoken language models (SLMs) are generative models of speech that do not rely on text supervision. Most textless SLMs learn to predict the next semantic token, a discrete representation of linguistic content, and rely on a…

Computation and Language · Computer Science 2025-10-23 Ju-Chieh Chou , Jiawei Zhou , Karen Livescu

Neural sequence-to-sequence text-to-speech synthesis (TTS), such as Tacotron-2, transforms text into high-quality speech. However, generating speech with natural prosody still remains a challenge. Yasuda et. al. show that unlike natural…

Sound · Computer Science 2021-04-12 Mahsa Elyasi , Gaurav Bharaj

It is desirable for a text-to-speech system to take into account the environment where synthetic speech is presented, and provide appropriate context-dependent output to the user. In this paper, we present and compare various approaches for…

Audio and Speech Processing · Electrical Eng. & Systems 2021-01-15 Qiong Hu , Tobias Bleisch , Petko Petkov , Tuomo Raitio , Erik Marchi , Varun Lakshminarasimhan

The design of mean and variance schedules for the perturbed signal is a fundamental challenge in generative models. While score-based and Schr\"odinger bridge-based models require careful selection of the stochastic differential equation to…

Sound · Computer Science 2025-09-10 Taihui Wang , Rilin Chen , Tong Lei , Andong Li , Jinzheng Zhao , Meng Yu , Dong Yu

Talking face generation has gained immense popularity in the computer vision community, with various applications including AR, VR, teleconferencing, digital assistants, and avatars. Traditional methods are mainly audio-driven, which have…

Computer Vision and Pattern Recognition · Computer Science 2024-11-21 Xingjian Diao , Ming Cheng , Wayner Barrios , SouYoung Jin

This paper integrates a classic mel-cepstral synthesis filter into a modern neural speech synthesis system towards end-to-end controllable speech synthesis. Since the mel-cepstral synthesis filter is explicitly embedded in neural waveform…

Audio and Speech Processing · Electrical Eng. & Systems 2022-11-22 Takenori Yoshimura , Shinji Takaki , Kazuhiro Nakamura , Keiichiro Oura , Yukiya Hono , Kei Hashimoto , Yoshihiko Nankaku , Keiichi Tokuda

Modern neural text-to-speech (TTS) synthesis can generate speech that is indistinguishable from natural speech. However, the prosody of generated utterances often represents the average prosodic style of the database instead of having wide…

Audio and Speech Processing · Electrical Eng. & Systems 2020-09-16 Tuomo Raitio , Ramya Rasipuram , Dan Castellani

Neural text-to-speech systems are often optimized on L1/L2 losses, which make strong assumptions about the distributions of the target data space. Aiming to improve those assumptions, Normalizing Flows and Diffusion Probabilistic Models…

This work introduces Focused-Variation Network (FVN), a novel model to control language generation. The main problems in previous controlled language generation models range from the difficulty of generating text according to the given…

Computation and Language · Computer Science 2020-09-28 Lei Shu , Alexandros Papangelis , Yi-Chia Wang , Gokhan Tur , Hu Xu , Zhaleh Feizollahi , Bing Liu , Piero Molino
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