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Modern approaches to text to speech require the entire input character sequence to be processed before any audio is synthesised. This latency limits the suitability of such models for time-sensitive tasks like simultaneous interpretation.…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-16 Devang S Ram Mohan , Raphael Lenain , Lorenzo Foglianti , Tian Huey Teh , Marlene Staib , Alexandra Torresquintero , Jiameng Gao

In recent years, there has been significant progress in Text-to-Speech (TTS) synthesis technology, enabling the high-quality synthesis of voices in common scenarios. In unseen situations, adaptive TTS requires a strong generalization…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-10 Zhipeng Li , Xiaofen Xing , Jun Wang , Shuaiqi Chen , Guoqiao Yu , Guanglu Wan , Xiangmin Xu

Task-oriented dialogue (TOD) system is designed to accomplish user-defined tasks through dialogues. The TOD system has progressed towards end-to-end modeling by leveraging pre-trained large language models. Fine-tuning the pre-trained…

Computation and Language · Computer Science 2024-11-11 Dharmendra Prajapat , Durga Toshniwal

Current emotional text-to-speech (TTS) models predominantly conduct supervised training to learn the conversion from text and desired emotion to its emotional speech, focusing on a single emotion per text-speech pair. These models only…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-17 Xiaoxue Gao , Chen Zhang , Yiming Chen , Huayun Zhang , Nancy F. Chen

As an endangered language, Manchu presents unique challenges for speech synthesis, including severe data scarcity and strong phonological agglutination. This paper proposes ManchuTTS(Manchu Text to Speech), a novel approach tailored to…

Computation and Language · Computer Science 2025-12-30 Suhua Wang , Zifan Wang , Xiaoxin Sun , D. J. Wang , Zhanbo Liu , Xin Li

Direct Preference Optimisation (DPO) has emerged as a powerful method for aligning Large Language Models (LLMs) with human preferences, offering a stable and efficient alternative to approaches that use Reinforcement learning via Human…

Artificial Intelligence · Computer Science 2025-05-06 Sarvesh Shashidhar , Ritik , Nachiketa Patil , Suraj Racha , Ganesh Ramakrishnan

In recent years, text-to-speech (TTS) technology has witnessed impressive advancements, particularly with large-scale training datasets, showcasing human-level speech quality and impressive zero-shot capabilities on unseen speakers.…

Computation and Language · Computer Science 2024-06-04 Chen Chen , Yuchen Hu , Wen Wu , Helin Wang , Eng Siong Chng , Chao Zhang

Despite imperfect score-matching causing drift in training and sampling distributions of diffusion models, recent advances in diffusion-based acoustic models have revolutionized data-sufficient single-speaker Text-to-Speech (TTS)…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-01 Heyang Xue , Shuai Guo , Pengcheng Zhu , Mengxiao Bi

Text-to-speech (TTS) systems offer the opportunity to compensate for a hearing loss at the source rather than correcting for it at the receiving end. This removes limitations such as time constraints for algorithms that amplify a sound in a…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-23 Josef Schlittenlacher , Thomas Baer

Emotional text-to-speech seeks to convey affect while preserving intelligibility and prosody, yet existing methods rely on coarse labels or proxy classifiers and receive only utterance-level feedback. We introduce Emotion-Aware Stepwise…

Computation and Language · Computer Science 2026-02-10 Jiacheng Shi , Hongfei Du , Yangfan He , Y. Alicia Hong , Ye Gao

We present the first text-to-speech (TTS) system tailored to second language (L2) speakers. We use duration differences between American English tense (longer) and lax (shorter) vowels to create a "clarity mode" for Matcha-TTS. Our…

Sound · Computer Science 2025-09-04 Paige Tuttösí , H. Henny Yeung , Yue Wang , Jean-Julien Aucouturier , Angelica Lim

This paper proposes a zero-shot text-to-speech (TTS) conditioned by a self-supervised speech-representation model acquired through self-supervised learning (SSL). Conventional methods with embedding vectors from x-vector or global style…

Sound · Computer Science 2023-12-19 Kenichi Fujita , Takanori Ashihara , Hiroki Kanagawa , Takafumi Moriya , Yusuke Ijima

Recent trends in neural network based text-to-speech/speech synthesis pipelines have employed recurrent Seq2seq architectures that can synthesize realistic sounding speech directly from text characters. These systems however have complex…

Computation and Language · Computer Science 2019-03-19 Gary Wang

Language Model (LM)-based speech enhancement (SE) has recently emerged as a promising direction, but existing approaches predominantly rely on token-level likelihood objectives that weakly reflect human perception. This mismatch limits…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-21 Haoyang Li , Nana Hou , Yuchen Hu , Jixun Yao , Sabato Marco Siniscalchi , Xuyi Zhuang , Deheng Ye , Wei Yang , Eng Siong Chng

Large-scale latent diffusion models (LDMs) excel in content generation across various modalities, but their reliance on phonemes and durations in text-to-speech (TTS) limits scalability and access from other fields. While recent studies…

Audio and Speech Processing · Electrical Eng. & Systems 2025-02-18 Keon Lee , Dong Won Kim , Jaehyeon Kim , Seungjun Chung , Jaewoong Cho

In recent years, speech diffusion models have advanced rapidly. Alongside the widely used U-Net architecture, transformer-based models such as the Diffusion Transformer (DiT) have also gained attention. However, current DiT speech models…

Current text to speech (TTS) systems usually leverage a cascaded acoustic model and vocoder pipeline with mel-spectrograms as the intermediate representations, which suffer from two limitations: 1) the acoustic model and vocoder are…

Sound · Computer Science 2022-07-12 Yanqing Liu , Ruiqing Xue , Lei He , Xu Tan , Sheng Zhao

Current non-autoregressive (NAR) text-to-speech (TTS) systems still struggle to model diverse and speaker-dependent duration variation. We further observe that richer duration variation can increase the synthesis difficulty of existing…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-29 Qingliang Meng , Yuqing Deng , Wei Liang , Limei Yu , Huizhi Liang , Tian Li

Explicit duration modeling is a key to achieving robust and efficient alignment in text-to-speech synthesis (TTS). We propose a new TTS framework using explicit duration modeling that incorporates duration as a discrete latent variable to…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-21 Yusuke Yasuda , Xin Wang , Junichi Yamagishi

Temporal reasoning over long, multi-session dialogues is a critical capability for conversational agents. However, existing works and our pilot study have shown that as dialogue histories grow in length and accumulate noise, current…

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