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Compression artifacts from standard video codecs often degrade perceptual quality. We propose a lightweight, semantic-aware pre-processing framework that enhances perceptual fidelity by selectively addressing these distortions. Our method…

Image and Video Processing · Electrical Eng. & Systems 2026-02-02 Han-Yu Lin , Li-Wei Chen , Hung-Shin Lee

Conventional audio coding technologies commonly leverage human perception of sound, or psychoacoustics, to reduce the bitrate while preserving the perceptual quality of the decoded audio signals. For neural audio codecs, however, the…

Sound · Computer Science 2021-01-05 Kai Zhen , Mi Suk Lee , Jongmo Sung , Seungkwon Beack , Minje Kim

In recent years, the introduction of neural networks (NNs) into the field of speech enhancement has brought significant improvements. However, many of the proposed methods are quite demanding in terms of computational complexity and memory…

Audio and Speech Processing · Electrical Eng. & Systems 2024-04-19 Ernst Seidel , Pejman Mowlaee , Tim Fingscheidt

Deep-learning based methods have shown their advantages in audio coding over traditional ones but limited attention has been paid on real-time communications (RTC). This paper proposes the TFNet, an end-to-end neural speech codec with low…

Sound · Computer Science 2022-02-16 Xue Jiang , Xiulian Peng , Chengyu Zheng , Huaying Xue , Yuan Zhang , Yan Lu

This paper explores the integration of model-based and data-driven approaches within the realm of neural speech and audio coding systems. It highlights the challenges posed by the subjective evaluation processes of speech and audio codecs…

Sound · Computer Science 2025-01-08 Minje Kim , Jan Skoglund

Multi-bit watermarking has emerged as a promising solution for embedding imperceptible binary messages into Large Language Model (LLM)-generated text, enabling reliable attribution and tracing of malicious usage of LLMs. Despite recent…

Computation and Language · Computer Science 2026-04-17 Jiahao Xu , Rui Hu , Olivera Kotevska , Zikai Zhang

This study aims to present an adaptive audio watermarking method using ideas of wavelet-based entropy (WBE). The method converts low-frequency coefficients of discrete wavelet transform (DWT) into the WBE domain, followed by the…

Cryptography and Security · Computer Science 2011-04-04 Shuo-Tsung Chen , Huang-Nan Huang , Chur-Jen Chen

Deepfakes generated by modern generative models pose a serious threat to information integrity, digital identity, and public trust. Existing detection methods are largely reactive, attempting to identify manipulations after they occur and…

Artificial Intelligence · Computer Science 2026-03-25 Bibek Das , Chandranath Adak , Soumi Chattopadhyay , Zahid Akhtar , Soumya Dutta

Speech 'in-the-wild' is a handicap for speaker recognition systems due to the variability induced by real-life conditions, such as environmental noise and the emotional state of the speaker. Taking advantage of the principles of…

Audio and Speech Processing · Electrical Eng. & Systems 2022-05-17 Esther Rituerto-González , Carmen Peláez-Moreno

Due to costly efforts during data acquisition and model training, Deep Neural Networks (DNNs) belong to the intellectual property of the model creator. Hence, unauthorized use, theft, or modification may lead to legal repercussions.…

Machine Learning · Computer Science 2023-10-26 Torsten Krauß , Jasper Stang , Alexandra Dmitrienko

Unauthorized screen capturing and dissemination pose severe security threats such as data leakage and information theft. Several studies propose robust watermarking methods to track the copyright of Screen-Camera (SC) images, facilitating…

Computer Vision and Pattern Recognition · Computer Science 2025-11-13 Yufeng Wu , Xin Liao , Baowei Wang , Han Fang , Xiaoshuai Wu , Mingyue Chen , Guiling Wang

Watermarking is the process of embedding information into an image that can survive under distortions, while requiring the encoded image to have little or no perceptual difference from the original image. Recently, deep learning-based…

Multimedia · Computer Science 2020-01-15 Xiyang Luo , Ruohan Zhan , Huiwen Chang , Feng Yang , Peyman Milanfar

Recent advancements in audio generation have been significantly propelled by the capabilities of Large Language Models (LLMs). The existing research on audio LLM has primarily focused on enhancing the architecture and scale of audio…

Audio and Speech Processing · Electrical Eng. & Systems 2024-11-28 Zhen Ye , Peiwen Sun , Jiahe Lei , Hongzhan Lin , Xu Tan , Zheqi Dai , Qiuqiang Kong , Jianyi Chen , Jiahao Pan , Qifeng Liu , Yike Guo , Wei Xue

Preserving speech intelligibility is a minimum requirement for speech codecs in communication. Recently, very low-bitrate neural codecs have gained interest for replacing classical codecs, reinforcing the need to evaluate whether…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-06 Lyonel Behringer , Anna Leschanowsky , Anjana Rajasekhar , Emily Kratsch , Guillaume Fuchs

Invisible watermarking of AI-generated images can help with copyright protection, enabling detection and identification of AI-generated media. In this work, we present a novel approach to watermark images of T2I Latent Diffusion Models…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Naresh Kumar Devulapally , Mingzhen Huang , Vishal Asnani , Shruti Agarwal , Siwei Lyu , Vishnu Suresh Lokhande

With the rapid rise of large models, copyright protection for generated image content has become a critical security challenge. Although deep learning watermarking techniques offer an effective solution for digital image copyright…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Shaowu Wu , Liting Zeng , Wei Lu , Xiangyang Luo

Watermarking is an important tool for promoting the responsible use of large language models (LLMs). Existing watermarks insert a signal into generated tokens that either flags LLM-generated text (zero-bit watermarking) or encodes more…

Machine Learning · Computer Science 2026-05-25 Atefeh Gilani , Sajani Vithana , Carol Xuan Long , Oliver Kosut , Lalitha Sankar , Flavio P. Calmon

With recent advances in machine learning, researchers are now able to solve traditional problems with new solutions. In the area of digital watermarking, deep-learning-based watermarking technique is being extensively studied. Most existing…

Multimedia · Computer Science 2022-06-28 Han Fang , Zhaoyang Jia , Yupeng Qiu , Jiyi Zhang , Weiming Zhang , Ee-Chien Chang

Recent advances in Large Language Models (LLMs) have raised urgent concerns about LLM-generated text authenticity, prompting regulatory demands for reliable identification mechanisms. Although watermarking offers a promising solution,…

Computation and Language · Computer Science 2025-08-26 Xiaoyan Feng , He Zhang , Yanjun Zhang , Leo Yu Zhang , Shirui Pan

With the proliferation of Large Language Model (LLM) based deepfake audio, there is an urgent need for effective detection methods. Previous deepfake audio generation methods typically involve a multi-step generation process, with the final…

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