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We propose an adversarial learning approach for generating multi-turn dialogue responses. Our proposed framework, hredGAN, is based on conditional generative adversarial networks (GANs). The GAN's generator is a modified hierarchical…

Computation and Language · Computer Science 2019-06-27 Oluwatobi Olabiyi , Alan Salimov , Anish Khazane , Erik T. Mueller

Neural vocoders often struggle with aliasing in latent feature spaces, caused by time-domain nonlinear operations and resampling layers. Aliasing folds high-frequency components into the low-frequency range, making aliased and original…

Sound · Computer Science 2025-12-08 Reo Yoneyama , Atsushi Miyashita , Ryuichi Yamamoto , Tomoki Toda

Generative models such as the variational autoencoder (VAE) and the generative adversarial networks (GAN) have proven to be incredibly powerful for the generation of synthetic data that preserves statistical properties and utility of…

Signal Processing · Electrical Eng. & Systems 2022-04-29 Moustafa Alzantot , Luis Garcia , Mani Srivastava

Existing deep learning real denoising methods require a large amount of noisy-clean image pairs for supervision. Nonetheless, capturing a real noisy-clean dataset is an unacceptable expensive and cumbersome procedure. To alleviate this…

Computer Vision and Pattern Recognition · Computer Science 2022-09-16 Yuanhao Cai , Xiaowan Hu , Haoqian Wang , Yulun Zhang , Hanspeter Pfister , Donglai Wei

Generative Adversarial Networks (GANs) for producing realistic signals, have substantially improved fault diagnosis algorithms in various Internet of Things (IoT) systems. However, challenges such as training instability and dynamical…

Signal Processing · Electrical Eng. & Systems 2023-11-02 Xuan Liu , Jinglong Chen , Jingsong Xie , Yuanhong Chang

In speech synthesis, a generative adversarial network (GAN), training a generator (speech synthesizer) and a discriminator in a min-max game, is widely used to improve speech quality. An ensemble of discriminators is commonly used in recent…

Sound · Computer Science 2023-03-27 Takuhiro Kaneko , Hirokazu Kameoka , Kou Tanaka , Shogo Seki

The goal of this paper is to generate realistic audio with a lightweight and fast diffusion-based vocoder, named FreGrad. Our framework consists of the following three key components: (1) We employ discrete wavelet transform that decomposes…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-19 Tan Dat Nguyen , Ji-Hoon Kim , Youngjoon Jang , Jaehun Kim , Joon Son Chung

The mainstream neural text-to-speech(TTS) pipeline is a cascade system, including an acoustic model(AM) that predicts acoustic feature from the input transcript and a vocoder that generates waveform according to the given acoustic feature.…

Audio and Speech Processing · Electrical Eng. & Systems 2024-10-25 Chenpeng Du , Yiwei Guo , Xie Chen , Kai Yu

Generative adversarial networks have seen rapid development in recent years and have led to remarkable improvements in generative modelling of images. However, their application in the audio domain has received limited attention, and…

Voice conversion has gained increasing popularity in many applications of speech synthesis. The idea is to change the voice identity from one speaker into another while keeping the linguistic content unchanged. Many voice conversion…

Sound · Computer Science 2021-06-03 Bac Nguyen , Fabien Cardinaux

Rapid advances in speech synthesis and audio editing have made realistic forgeries increasingly accessible, yet existing detection methods remain vulnerable to tampering or depend on visual/wearable sensors. In this paper, we present…

Human-Computer Interaction · Computer Science 2026-03-31 Mingda Han , Huanqi Yang , Chaoqun Li , Wenhao Li , Guoming Zhang , Yanni Yang , Yetong Cao , Weitao Xu , Pengfei Hu

Metasurfaces have widespread applications in fifth-generation (5G) microwave communication. Among the metasurface family, free-form metasurfaces excel in achieving intricate spectral responses compared to regular-shape counterparts.…

Machine Learning · Computer Science 2024-01-09 Manna Dai , Yang Jiang , Feng Yang , Joyjit Chattoraj , Yingzhi Xia , Xinxing Xu , Weijiang Zhao , My Ha Dao , Yong Liu

Conditional waveform synthesis models learn a distribution of audio waveforms given conditioning such as text, mel-spectrograms, or MIDI. These systems employ deep generative models that model the waveform via either sequential…

Audio and Speech Processing · Electrical Eng. & Systems 2022-03-07 Max Morrison , Rithesh Kumar , Kundan Kumar , Prem Seetharaman , Aaron Courville , Yoshua Bengio

In a recent paper, we have presented a generative adversarial network (GAN)-based model for unconditional generation of the mel-spectrograms of singing voices. As the generator of the model is designed to take a variable-length sequence of…

Audio and Speech Processing · Electrical Eng. & Systems 2021-05-13 Jen-Yu Liu , Yu-Hua Chen , Yin-Cheng Yeh , Yi-Hsuan Yang

Language models (LMs) have recently flourished in natural language processing and computer vision, generating high-fidelity texts or images in various tasks. In contrast, the current speech generative models are still struggling regarding…

Sound · Computer Science 2023-10-13 Xinfa Zhu , Yuanjun Lv , Yi Lei , Tao Li , Wendi He , Hongbin Zhou , Heng Lu , Lei Xie

Discrete Audio codecs (or audio tokenizers) have recently regained interest due to the ability of Large Language Models (LLMs) to learn their compressed acoustic representations. Various publicly available trainable discrete tokenizers…

Audio and Speech Processing · Electrical Eng. & Systems 2024-10-14 Slava Shechtman , Avihu Dekel

We present VoloGAN, an adversarial domain adaptation network that translates synthetic RGB-D images of a high-quality 3D model of a person, into RGB-D images that could be generated with a consumer depth sensor. This system is especially…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Sascha Kirch , Rafael Pagés , Sergio Arnaldo , Sergio Martín

Generative Adversarial Networks (GANs) are currently the method of choice for generating visual data. Certain GAN architectures and training methods have demonstrated exceptional performance in generating realistic synthetic images (in…

Computer Vision and Pattern Recognition · Computer Science 2019-03-26 Shiyang Cheng , Michael Bronstein , Yuxiang Zhou , Irene Kotsia , Maja Pantic , Stefanos Zafeiriou

Cycle-consistent generative adversarial networks have been widely used in non-parallel voice conversion (VC). Their ability to learn mappings between source and target features without relying on parallel training data eliminates the need…

Sound · Computer Science 2025-06-24 Dominik Wagner , Ilja Baumann , Tobias Bocklet

We propose a novel method for generating high-resolution videos of talking-heads from speech audio and a single 'identity' image. Our method is based on a convolutional neural network model that incorporates a pre-trained StyleGAN…

Computer Vision and Pattern Recognition · Computer Science 2022-09-12 Mohammed M. Alghamdi , He Wang , Andrew J. Bulpitt , David C. Hogg