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Wav2vec2 has achieved success in applying Transformer architecture and self-supervised learning to speech recognition. Recently, these have come to be used not only for speech recognition but also for the entire speech processing. This…

Sound · Computer Science 2023-09-12 Harunori Kawano , Sota Shimizu

Automatic transcription of monophonic/polyphonic music is a challenging task due to the lack of availability of large amounts of transcribed data. In this paper, we propose a data augmentation method that converts natural speech to singing…

Sound · Computer Science 2021-02-18 Sakya Basak , Shrutina Agarwal , Sriram Ganapathy , Naoya Takahashi

There are two types of methods for non-autoregressive text-to-speech models to learn the one-to-many relationship between text and speech effectively. The first one is to use an advanced generative framework such as normalizing flow (NF).…

Audio and Speech Processing · Electrical Eng. & Systems 2023-02-28 Yoonhyung Lee , Jinhyeok Yang , Kyomin Jung

Recently, voice conversion (VC) without parallel data has been successfully adapted to multi-target scenario in which a single model is trained to convert the input voice to many different speakers. However, such model suffers from the…

Machine Learning · Computer Science 2019-08-23 Ju-chieh Chou , Cheng-chieh Yeh , Hung-yi Lee

Voice Conversion (VC) aims to modify a speaker's timbre while preserving linguistic content. While recent VC models achieve strong performance, most struggle in real-time streaming scenarios due to high latency, dependence on ASR modules,…

Sound · Computer Science 2025-10-13 Zhao Guo , Ziqian Ning , Guobin Ma , Lei Xie

We propose a CTC alignment-based single step non-autoregressive transformer (CASS-NAT) for speech recognition. Specifically, the CTC alignment contains the information of (a) the number of tokens for decoder input, and (b) the time span of…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-15 Ruchao Fan , Wei Chu , Peng Chang , Jing Xiao

Augmenting the training data of automatic speech recognition (ASR) systems with synthetic data generated by text-to-speech (TTS) or voice conversion (VC) has gained popularity in recent years. Several works have demonstrated improvements in…

Audio and Speech Processing · Electrical Eng. & Systems 2025-03-13 Sewade Ogun , Vincent Colotte , Emmanuel Vincent

Current speech generation research can be categorized into two primary classes: non-autoregressive and autoregressive. The fundamental distinction between these approaches lies in the duration prediction strategy employed for…

Audio and Speech Processing · Electrical Eng. & Systems 2025-05-16 Linhan Ma , Dake Guo , He Wang , Jin Xu , Lei Xie

We present Deep Voice 3, a fully-convolutional attention-based neural text-to-speech (TTS) system. Deep Voice 3 matches state-of-the-art neural speech synthesis systems in naturalness while training ten times faster. We scale Deep Voice 3…

Voice conversion (VC) could be used to improve speech recognition systems in low-resource languages by using it to augment limited training data. However, VC has not been widely used for this purpose because of practical issues such as…

Audio and Speech Processing · Electrical Eng. & Systems 2022-06-22 Matthew Baas , Herman Kamper

Neural audio codecs (NACs) provide compact latent speech representations in the form of sequences of continuous vectors or discrete tokens. In this work, we investigate how these two types of speech representations compare when used as…

Sound · Computer Science 2026-03-12 Sofiene Kammoun , Xavier Alameda-Pineda , Simon Leglaive

Speech to speech translation (S2ST) is a transformative technology that bridges global communication gaps, enabling real time multilingual interactions in diplomacy, tourism, and international trade. Our review examines the evolution of…

Computation and Language · Computer Science 2025-03-10 Mohammad Sarim , Saim Shakeel , Laeeba Javed , Jamaluddin , Mohammad Nadeem

We propose a neural text-to-speech (TTS) model that can imitate a new speaker's voice using only a small amount of speech sample. We demonstrate voice imitation using only a 6-seconds long speech sample without any other information such as…

Sound · Computer Science 2018-06-05 Younggun Lee , Taesu Kim , Soo-Young Lee

Recently Transformer and Convolution neural network (CNN) based models have shown promising results in Automatic Speech Recognition (ASR), outperforming Recurrent neural networks (RNNs). Transformer models are good at capturing…

Audio and Speech Processing · Electrical Eng. & Systems 2020-05-19 Anmol Gulati , James Qin , Chung-Cheng Chiu , Niki Parmar , Yu Zhang , Jiahui Yu , Wei Han , Shibo Wang , Zhengdong Zhang , Yonghui Wu , Ruoming Pang

End-to-end (E2E) models fold the acoustic, pronunciation and language models of a conventional speech recognition model into one neural network with a much smaller number of parameters than a conventional ASR system, thus making it suitable…

Audio and Speech Processing · Electrical Eng. & Systems 2020-05-14 Bo Li , Shuo-yiin Chang , Tara N. Sainath , Ruoming Pang , Yanzhang He , Trevor Strohman , Yonghui Wu

Current text-to-speech (TTS) models face a persistent limitation: autoregressive (AR) models suffer from low generation efficiency, while modern non-autoregressive (NAR) models experience high latency due to their unordered temporal nature.…

Sound · Computer Science 2026-03-17 Zhengyan Sheng , Zhihao Du , Shiliang Zhang , Zhijie Yan , Liping Chen

This paper focuses on using voice conversion (VC) to improve the speech intelligibility of surgical patients who have had parts of their articulators removed. Due to the difficulty of data collection, VC without parallel data is highly…

Audio and Speech Processing · Electrical Eng. & Systems 2019-08-26 Li-Wei Chen , Hung-Yi Lee , Yu Tsao

Voice conversion for highly expressive speech is challenging. Current approaches struggle with the balancing between speaker similarity, intelligibility and expressiveness. To address this problem, we propose Expressive-VC, a novel…

Audio and Speech Processing · Electrical Eng. & Systems 2022-11-10 Ziqian Ning , Qicong Xie , Pengcheng Zhu , Zhichao Wang , Liumeng Xue , Jixun Yao , Lei Xie , Mengxiao Bi

Recent advances in large language models (LLMs) have attracted significant interest in extending their capabilities to multimodal scenarios, particularly for speech-to-speech conversational systems. However, existing multimodal models…

Computation and Language · Computer Science 2026-03-26 Tianqiao Liu , Xueyi Li , Hao Wang , Haoxuan Li , Zhichao Chen , Weiqi Luo , Zitao Liu

We present a method for transferring pre-trained self-supervised (SSL) speech representations to multiple languages. There is an abundance of unannotated speech, so creating self-supervised representations from raw audio and fine-tuning on…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-08 Samuel Kessler , Bethan Thomas , Salah Karout