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We present an optimized weighted finite-state transducer (WFST) decoder capable of online streaming and offline batch processing of audio using Graphics Processing Units (GPUs). The decoder is efficient in memory utilization, input/output…

Computation and Language · Computer Science 2020-02-17 Hugo Braun , Justin Luitjens , Ryan Leary , Tim Kaldewey , Daniel Povey

Recently, deep learning-based Text-to-Speech (TTS) systems have achieved high-quality speech synthesis results. Recurrent neural networks have become a standard modeling technique for sequential data in TTS systems and are widely used.…

Sound · Computer Science 2024-03-19 Ziqi Liang , Haoxiang Shi , Jiawei Wang , Keda Lu

Guided source separation (GSS) is a type of target-speaker extraction method that relies on pre-computed speaker activities and blind source separation to perform front-end enhancement of overlapped speech signals. It was first proposed…

Audio and Speech Processing · Electrical Eng. & Systems 2023-08-15 Desh Raj , Daniel Povey , Sanjeev Khudanpur

Various sources have reported the WaveNet deep learning architecture being able to generate high-quality speech, but to our knowledge there haven't been studies on the interpretation or visualization of trained WaveNets. This study…

Sound · Computer Science 2018-02-26 Kanru Hua

In recent years, speech generation has seen remarkable progress, now achieving one-shot generation capability that is often virtually indistinguishable from real human voice. Integrating such advancements in speech generation with large…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-08 Paweł Budzianowski , Taras Sereda , Tomasz Cichy , Ivan Vulić

Unconstrained lip-to-speech synthesis aims to generate corresponding speeches from silent videos of talking faces with no restriction on head poses or vocabulary. Current works mainly use sequence-to-sequence models to solve this problem,…

Sound · Computer Science 2022-07-14 Yongqi Wang , Zhou Zhao

State-of-the-art models for high-resolution image generation, such as BigGAN and VQVAE-2, require an incredible amount of compute resources and/or time (512 TPU-v3 cores) to train, putting them out of reach for the larger research…

Image and Video Processing · Electrical Eng. & Systems 2020-10-27 Seungwook Han , Akash Srivastava , Cole Hurwitz , Prasanna Sattigeri , David D. Cox

Recent years have witnessed significant advancements in self-supervised learning (SSL) methods for speech-processing tasks. Various speech-based SSL models have been developed and present promising performance on a range of downstream tasks…

Computation and Language · Computer Science 2023-10-02 Guanrou Yang , Ziyang Ma , Zhisheng Zheng , Yakun Song , Zhikang Niu , Xie Chen

We present SoundStorm, a model for efficient, non-autoregressive audio generation. SoundStorm receives as input the semantic tokens of AudioLM, and relies on bidirectional attention and confidence-based parallel decoding to generate the…

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

Building efficient and effective generative models for neural network weights has been a research focus of significant interest that faces challenges posed by the high-dimensional weight spaces of modern neural networks and their…

Machine Learning · Computer Science 2026-05-01 Saumya Gupta , Scott Biggs , Moritz Laber , Zohair Shafi , Robin Walters , Ayan Paul

This paper presents a neural vocoder named HiNet which reconstructs speech waveforms from acoustic features by predicting amplitude and phase spectra hierarchically. Different from existing neural vocoders such as WaveNet, SampleRNN and…

Sound · Computer Science 2020-02-06 Yang Ai , Zhen-Hua Ling

This paper describes a novel approach for on demand volumetric texture synthesis based on a deep learning framework that allows for the generation of high quality 3D data at interactive rates. Based on a few example images of textures, a…

Graphics · Computer Science 2020-01-15 Jorge Gutierrez , Julien Rabin , Bruno Galerne , Thomas Hurtut

Audio-driven talking head generation is crucial for applications in virtual reality, digital avatars, and film production. While NeRF-based methods enable high-fidelity reconstruction, they suffer from low rendering efficiency and…

Sound · Computer Science 2025-09-23 Tianheng Zhu , Yinfeng Yu , Liejun Wang , Fuchun Sun , Wendong Zheng

Denoising in the sRGB image space is challenging due to large noise variability. Although end-to-end methods perform well, their effectiveness in real-world scenarios is limited by the scarcity of real noisy-clean image pairs, which are…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Jaekyun Ko , Dongjin Kim , Soomin Lee , Guanghui Wang , Tae Hyun Kim

In recent years, synthetic speech generated by advanced text-to-speech (TTS) and voice conversion (VC) systems has caused great harms to automatic speaker verification (ASV) systems, urging us to design a synthetic speech detection system…

Sound · Computer Science 2021-08-16 Youxuan Ma , Zongze Ren , Shugong Xu

Recently, the application of diffusion models has facilitated the significant development of speech and audio generation. Nevertheless, the quality of samples generated by diffusion models still needs improvement. And the effectiveness of…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-13 Wenhao Guan , Kaidi Wang , Wangjin Zhou , Yang Wang , Feng Deng , Hui Wang , Lin Li , Qingyang Hong , Yong Qin

In recent years, machine learning (ML) methods have become increasingly popular in wireless communication systems for several applications. A critical bottleneck for designing ML systems for wireless communications is the availability of…

Signal Processing · Electrical Eng. & Systems 2025-06-03 Satyavrat Wagle , Akshay Malhotra , Shahab Hamidi-Rad , Aditya Sant , David J. Love , Christopher G. Brinton

In recent years, the burgeoning interest in diffusion models has led to significant advances in image and speech generation. Nevertheless, the direct synthesis of music waveforms from unrestricted textual prompts remains a relatively…

Sound · Computer Science 2023-09-22 Pengfei Zhu , Chao Pang , Yekun Chai , Lei Li , Shuohuan Wang , Yu Sun , Hao Tian , Hua Wu

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…

Audio and Speech Processing · Electrical Eng. & Systems 2019-12-04 Leyuan Sheng , Dong-Yan Huang , Evgeniy N. Pavlovskiy