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In this work, we present DiffVoice, a novel text-to-speech model based on latent diffusion. We propose to first encode speech signals into a phoneme-rate latent representation with a variational autoencoder enhanced by adversarial training,…

Audio and Speech Processing · Electrical Eng. & Systems 2023-04-25 Zhijun Liu , Yiwei Guo , Kai Yu

We propose a lightweight end-to-end text-to-speech model using multi-band generation and inverse short-time Fourier transform. Our model is based on VITS, a high-quality end-to-end text-to-speech model, but adopts two changes for more…

Audio and Speech Processing · Electrical Eng. & Systems 2023-02-22 Masaya Kawamura , Yuma Shirahata , Ryuichi Yamamoto , Kentaro Tachibana

Machine recognition of an atypical speech like whispered speech, is a challenging task. We introduce whisper-to-natural-speech conversion using sequence-to-sequence approach by proposing enhanced transformer architecture, which uses both…

Audio and Speech Processing · Electrical Eng. & Systems 2021-04-06 Abhishek Niranjan , Mukesh Sharma , Sai Bharath Chandra Gutha , M Ali Basha Shaik

To advance continuous-valued token modeling and temporal-coherence enforcement, we propose FELLE, an autoregressive model that integrates language modeling with token-wise flow matching. By leveraging the autoregressive nature of language…

Computation and Language · Computer Science 2025-09-04 Hui Wang , Shujie Liu , Lingwei Meng , Jinyu Li , Yifan Yang , Shiwan Zhao , Haiyang Sun , Yanqing Liu , Haoqin Sun , Jiaming Zhou , Yan Lu , Yong Qin

Existing Large Language Model (LLM) based autoregressive (AR) text-to-speech (TTS) systems, while achieving state-of-the-art quality, still face critical challenges. The foundation of this LLM-based paradigm is the discretization of the…

How to model distribution of sequential data, including but not limited to speech and human motions, is an important ongoing research problem. It has been demonstrated that model capacity can be significantly enhanced by introducing…

Machine Learning · Computer Science 2018-06-19 Guokun Lai , Bohan Li , Guoqing Zheng , Yiming Yang

We present an end-to-end deep network model that performs meeting diarization from single-channel audio recordings. End-to-end diarization models have the advantage of handling speaker overlap and enabling straightforward handling of…

Sound · Computer Science 2021-05-06 Soumi Maiti , Hakan Erdogan , Kevin Wilson , Scott Wisdom , Shinji Watanabe , John R. Hershey

We introduce a novel method for emotion conversion in speech that does not require parallel training data. Our approach loosely relies on a cycle-GAN schema to minimize the reconstruction error from converting back and forth between emotion…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-12 Ravi Shankar , Jacob Sager , Archana Venkataraman

In this paper we propose Flowtron: an autoregressive flow-based generative network for text-to-speech synthesis with control over speech variation and style transfer. Flowtron borrows insights from IAF and revamps Tacotron in order to…

Sound · Computer Science 2020-07-17 Rafael Valle , Kevin Shih , Ryan Prenger , Bryan Catanzaro

The slow, sequential nature of autoregressive (AR) language models has driven the adoption of parallel decoding methods. However, these non-AR models often sacrifice generation quality as they struggle to model the complex joint…

Computation and Language · Computer Science 2026-03-24 Chi Zhang , Xixi Hu , Bo Liu , Qiang Liu

Neural waveform models such as WaveNet have demonstrated better performance than conventional vocoders for statistical parametric speech synthesis. As an autoregressive (AR) model, WaveNet is limited by a slow sequential waveform generation…

Audio and Speech Processing · Electrical Eng. & Systems 2019-11-19 Xin Wang , Shinji Takaki , Junichi Yamagishi

We propose a linear prediction (LP)-based waveform generation method via WaveNet vocoding framework. A WaveNet-based neural vocoder has significantly improved the quality of parametric text-to-speech (TTS) systems. However, it is…

Audio and Speech Processing · Electrical Eng. & Systems 2020-03-05 Min-Jae Hwang , Frank Soong , Eunwoo Song , Xi Wang , Hyeonjoo Kang , Hong-Goo Kang

In this work, we introduce a framework for cross-lingual speech synthesis, which involves an upstream Voice Conversion (VC) model and a downstream Text-To-Speech (TTS) model. The proposed framework consists of 4 stages. In the first two…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-18 Dariusz Piotrowski , Renard Korzeniowski , Alessio Falai , Sebastian Cygert , Kamil Pokora , Georgi Tinchev , Ziyao Zhang , Kayoko Yanagisawa

Diffusion language models (DLMs) promise parallel, order-agnostic generation, but on standard benchmarks they have historically lagged behind autoregressive models in sample quality and diversity. Recent continuous flow and diffusion…

Computation and Language · Computer Science 2026-05-11 Georgios Batzolis , Mark Girolami , Luca Ambrogioni

Multimedia generation approaches occupy a prominent place in artificial intelligence research. Text-to-image models achieved high-quality results over the last few years. However, video synthesis methods recently started to develop. This…

Computer Vision and Pattern Recognition · Computer Science 2023-12-21 Vladimir Arkhipkin , Zein Shaheen , Viacheslav Vasilev , Elizaveta Dakhova , Andrey Kuznetsov , Denis Dimitrov

Text-to-speech (TTS) methods have shown promising results in voice cloning, but they require a large number of labeled text-speech pairs. Minimally-supervised speech synthesis decouples TTS by combining two types of discrete speech…

Sound · Computer Science 2023-12-19 Chunyu Qiang , Hao Li , Yixin Tian , Yi Zhao , Ying Zhang , Longbiao Wang , Jianwu Dang

Speech synthesis is an important practical generative modeling problem that has seen great progress over the last few years, with likelihood-based autoregressive neural models now outperforming traditional concatenative systems. A downside…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-26 Alexey A. Gritsenko , Tim Salimans , Rianne van den Berg , Jasper Snoek , Nal Kalchbrenner

Recent joint audio-visual diffusion models achieve remarkable generation quality but suffer from high latency due to their bidirectional attention dependencies, hindering real-time applications. We propose OmniForcing, the first framework…

Multimedia · Computer Science 2026-03-16 Yaofeng Su , Yuming Li , Zeyue Xue , Jie Huang , Siming Fu , Haoran Li , Ying Li , Zezhong Qian , Haoyang Huang , Nan Duan

Although neural text-to-speech (TTS) models have attracted a lot of attention and succeeded in generating human-like speech, there is still room for improvements to its naturalness and architectural efficiency. In this work, we propose a…

Audio and Speech Processing · Electrical Eng. & Systems 2021-04-06 Myeonghun Jeong , Hyeongju Kim , Sung Jun Cheon , Byoung Jin Choi , Nam Soo Kim

We propose InsNet, an expressive insertion-based text generator with efficient training and flexible decoding (parallel or sequential). Unlike most existing insertion-based text generation works that require re-encoding of the context after…

Computation and Language · Computer Science 2022-10-18 Sidi Lu , Tao Meng , Nanyun Peng