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We propose a GAN-based image compression method working at extremely low bitrates below 0.1bpp. Most existing learned image compression methods suffer from blur at extremely low bitrates. Although GAN can help to reconstruct sharp images,…

Image and Video Processing · Electrical Eng. & Systems 2023-06-01 Shoma Iwai , Tomo Miyazaki , Yoshihiro Sugaya , Shinichiro Omachi

Recent convolutional object detectors exploit multi-scale feature representations added with top-down pathway in order to detect objects at different scales and learn stronger semantic feature responses. In general, during the top-down…

Computer Vision and Pattern Recognition · Computer Science 2020-11-18 Seong-Ho Lee , Seung-Hwan Bae

Denoising diffusion probabilistic models (DDPMs) and generative adversarial networks (GANs) are popular generative models for neural vocoders. The DDPMs and GANs can be characterized by the iterative denoising framework and adversarial…

Audio and Speech Processing · Electrical Eng. & Systems 2022-10-04 Yuma Koizumi , Kohei Yatabe , Heiga Zen , Michiel Bacchiani

In recent years, Generative Adversarial Networks (GANs) have become a hot topic among researchers and engineers that work with deep learning. It has been a ground-breaking technique which can generate new pieces of content of data in a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Parthak Mehta , Sarthak Mishra , Nikhil Chouhan , Neel Pethani , Ishani Saha

Existing dominant methods for audio generation include Generative Adversarial Networks (GANs) and diffusion-based methods like Flow Matching. GANs suffer from slow convergence during training, while diffusion methods require multi-step…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-10 Zengwei Yao , Wei Kang , Han Zhu , Liyong Guo , Lingxuan Ye , Fangjun Kuang , Weiji Zhuang , Zhaoqing Li , Zhifeng Han , Long Lin , Daniel Povey

In our previous work, we proposed a neural vocoder called APNet, which directly predicts speech amplitude and phase spectra with a 5 ms frame shift in parallel from the input acoustic features, and then reconstructs the 16 kHz speech…

Audio and Speech Processing · Electrical Eng. & Systems 2023-11-21 Hui-Peng Du , Ye-Xin Lu , Yang Ai , Zhen-Hua Ling

In this paper we demonstrate that it is possible to generate more meaningful electroencephalography (EEG) features from raw EEG features using generative adversarial networks (GAN) to improve the performance of EEG based continuous speech…

Audio and Speech Processing · Electrical Eng. & Systems 2020-06-03 Gautam Krishna , Co Tran , Mason Carnahan , Ahmed Tewfik

The advent of learning-based methods in speech enhancement has revived the need for robust and reliable training features that can compactly represent speech signals while preserving their vital information. Time-frequency domain features,…

Audio and Speech Processing · Electrical Eng. & Systems 2020-07-28 Farnood Faraji , Yazid Attabi , Benoit Champagne , Wei-Ping Zhu

The paper presents a novel approach of spoofing wireless signals by using a general adversarial network (GAN) to generate and transmit synthetic signals that cannot be reliably distinguished from intended signals. It is of paramount…

Signal Processing · Electrical Eng. & Systems 2019-05-09 Yi Shi , Kemal Davaslioglu , Yalin E. Sagduyu

Generative adversarial networks (GANs), e.g., StyleGAN2, play a vital role in various image generation and synthesis tasks, yet their notoriously high computational cost hinders their efficient deployment on edge devices. Directly applying…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Yuchen Liu , Zhixin Shu , Yijun Li , Zhe Lin , Federico Perazzi , S. Y. Kung

We introduce the GANformer, a novel and efficient type of transformer, and explore it for the task of visual generative modeling. The network employs a bipartite structure that enables long-range interactions across the image, while…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Drew A. Hudson , C. Lawrence Zitnick

Influenced by the field of Computer Vision, Generative Adversarial Networks (GANs) are often adopted for the audio domain using fixed-size two-dimensional spectrogram representations as the "image data". However, in the (musical) audio…

Sound · Computer Science 2021-08-02 Javier Nistal , Cyran Aouameur , Stefan Lattner , Gaël Richard

Most neural vocoders are limited to one type: either GAN or diffusion-based. While state-of-the-art models like Vocos and WaveNeXt use powerful ConvNeXt-based generators, they have only been used in GAN frameworks and have limited…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-26 Wangzixi Zhou , Takuma Okamoto , Yamato Ohtani , Sakriani Sakti , Hisashi Kawai

While pre-trained automatic speech recognition (ASR) systems demonstrate impressive performance on matched domains, their performance often degrades when confronted with channel mismatch stemming from unseen recording environments and…

Sound · Computer Science 2025-01-09 Chien-Chun Wang , Li-Wei Chen , Cheng-Kang Chou , Hung-Shin Lee , Berlin Chen , Hsin-Min Wang

The rapid advancement of generative models has enabled highly realistic audio deepfakes, yet current detectors suffer from a critical bias problem, leading to poor generalization across unseen datasets. This paper proposes Artifact-Focused…

The state-of-the-art approaches in Generative Adversarial Networks (GANs) are able to learn a mapping function from one image domain to another with unpaired image data. However, these methods often produce artifacts and can only be able to…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Hao Tang , Dan Xu , Nicu Sebe , Yan Yan

In recent years, neural vocoders have surpassed classical speech generation approaches in naturalness and perceptual quality of the synthesized speech. Computationally heavy models like WaveNet and WaveGlow achieve best results, while…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-15 Ahmed Mustafa , Nicola Pia , Guillaume Fuchs

Generative speech enhancement methods based on generative adversarial networks (GANs) and diffusion models have shown promising results in various speech enhancement tasks. However, their performance in very low signal-to-noise ratio (SNR)…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-29 Shrishti Saha Shetu , Emanuël A. P. Habets , Andreas Brendel

Face Anti-Spoofing (FAS) algorithms, designed to secure face recognition systems against spoofing, struggle with limited dataset diversity, impairing their ability to handle unseen visual domains and spoofing methods. We introduce the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Seungjin Jung , Yonghyun Jeong , Minha Kim , Jimin Min , Youngjoon Yoo , Jongwon Choi

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…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-17 Martin Strauss , Bernd Edler