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Neural transducers (NT) provide an effective framework for speech streaming, demonstrating strong performance in automatic speech recognition (ASR). However, the application of NT to speech translation (ST) remains challenging, as existing…

Computation and Language · Computer Science 2025-06-04 Amir Hussein , Cihan Xiao , Matthew Wiesner , Dan Povey , Leibny Paola Garcia , Sanjeev Khudanpur

Current ASR systems are mainly trained and evaluated at the utterance level. Long range cross utterance context can be incorporated. A key task is to derive a suitable compact representation of the most relevant history contexts. In…

Audio and Speech Processing · Electrical Eng. & Systems 2023-06-27 Mingyu Cui , Jiawen Kang , Jiajun Deng , Xi Yin , Yutao Xie , Xie Chen , Xunying Liu

End-to-end text-to-speech (TTS) synthesis is a method that directly converts input text to output acoustic features using a single network. A recent advance of end-to-end TTS is due to a key technique called attention mechanisms, and all…

Audio and Speech Processing · Electrical Eng. & Systems 2019-09-02 Yusuke Yasuda , Xin Wang , Junichi Yamagishi

Most existing audio-text retrieval (ATR) approaches typically rely on a single-level interaction to associate audio and text, limiting their ability to align different modalities and leading to suboptimal matches. In this work, we present a…

Sound · Computer Science 2025-05-06 Yifei Xin , Zhihong Zhu , Xuxin Cheng , Xusheng Yang , Yuexian Zou

This paper presents a novel data augmentation technique for text-to-speech (TTS), that allows to generate new (text, audio) training examples without requiring any additional data. Our goal is to increase diversity of text conditionings…

Although neural end-to-end text-to-speech models can synthesize highly natural speech, there is still room for improvements to its efficiency and naturalness. This paper proposes a non-autoregressive neural text-to-speech model augmented…

Sound · Computer Science 2020-10-23 Isaac Elias , Heiga Zen , Jonathan Shen , Yu Zhang , Ye Jia , Ron Weiss , Yonghui Wu

We explore training attention-based encoder-decoder ASR in low-resource settings. These models perform poorly when trained on small amounts of transcribed speech, in part because they depend on having sufficient target-side text to train…

Audio and Speech Processing · Electrical Eng. & Systems 2019-08-06 Matthew Wiesner , Adithya Renduchintala , Shinji Watanabe , Chunxi Liu , Najim Dehak , Sanjeev Khudanpur

In end-to-end speech translation, acoustic representations learned by the encoder are usually fixed and static, from the perspective of the decoder, which is not desirable for dealing with the cross-modal and cross-lingual challenge in…

Computation and Language · Computer Science 2025-03-19 Wuwei Huang , Dexin Wang , Deyi Xiong

Direct speech-to-speech translation (S2ST) has achieved impressive translation quality, but it often faces the challenge of slow decoding due to the considerable length of speech sequences. Recently, some research has turned to…

Computation and Language · Computer Science 2024-06-12 Qingkai Fang , Zhengrui Ma , Yan Zhou , Min Zhang , Yang Feng

Accent conversion aims to convert the accent of a source speech to a target accent, meanwhile preserving the speaker's identity. This paper introduces a novel non-autoregressive framework for accent conversion that learns accent-agnostic…

Computation and Language · Computer Science 2024-01-09 Xi Chen , Jiakun Pei , Liumeng Xue , Mingyang Zhang

End-to-end (E2E) automatic speech recognition (ASR) systems often have difficulty recognizing uncommon words, that appear infrequently in the training data. One promising method, to improve the recognition accuracy on such rare words, is to…

Computation and Language · Computer Science 2021-11-08 Feng-Ju Chang , Jing Liu , Martin Radfar , Athanasios Mouchtaris , Maurizio Omologo , Ariya Rastrow , Siegfried Kunzmann

Context plays an important role in human language understanding, thus it may also be useful for machines learning vector representations of language. In this paper, we explore an asymmetric encoder-decoder structure for unsupervised…

Neural and Evolutionary Computing · Computer Science 2018-06-04 Shuai Tang , Hailin Jin , Chen Fang , Zhaowen Wang , Virginia R. de Sa

The dominant neural machine translation models are based on the encoder-decoder structure, and many of them rely on an unconstrained receptive field over source and target sequences. In this paper we study a new architecture that breaks…

Computation and Language · Computer Science 2019-05-17 José A. R. Fonollosa , Noe Casas , Marta R. Costa-jussà

Despite the progress made in sentence-level NMT, current systems still fall short at achieving fluent, good quality translation for a full document. Recent works in context-aware NMT consider only a few previous sentences as context and may…

Computation and Language · Computer Science 2019-05-27 Sameen Maruf , André F. T. Martins , Gholamreza Haffari

We propose a cross-modal transformer-based neural correction models that refines the output of an automatic speech recognition (ASR) system so as to exclude ASR errors. Generally, neural correction models are composed of encoder-decoder…

Computation and Language · Computer Science 2021-07-06 Tomohiro Tanaka , Ryo Masumura , Mana Ihori , Akihiko Takashima , Takafumi Moriya , Takanori Ashihara , Shota Orihashi , Naoki Makishima

Recent advances in text-to-speech have significantly improved the expressiveness of synthetic speech. However, a major challenge remains in generating speech that captures the diverse styles exhibited by professional narrators in audiobooks…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-13 Dake Guo , Xinfa Zhu , Liumeng Xue , Yongmao Zhang , Wenjie Tian , Lei Xie

Neural text-to-speech (TTS) synthesis can generate speech that is indistinguishable from natural speech. However, the synthetic speech often represents the average prosodic style of the database instead of having more versatile prosodic…

Audio and Speech Processing · Electrical Eng. & Systems 2022-03-24 Tuomo Raitio , Jiangchuan Li , Shreyas Seshadri

We introduce Matcha-TTS, a new encoder-decoder architecture for speedy TTS acoustic modelling, trained using optimal-transport conditional flow matching (OT-CFM). This yields an ODE-based decoder capable of high output quality in fewer…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-11 Shivam Mehta , Ruibo Tu , Jonas Beskow , Éva Székely , Gustav Eje Henter

This paper presents the use of non-autoregressive (NAR) approaches for joint automatic speech recognition (ASR) and spoken language understanding (SLU) tasks. The proposed NAR systems employ a Conformer encoder that applies connectionist…

Audio and Speech Processing · Electrical Eng. & Systems 2023-04-24 Mohan Li , Rama Doddipatla

Non-autoregressive (NAR) text-to-speech synthesis relies on length alignment between text sequences and audio representations, constraining naturalness and expressiveness. Existing methods depend on duration modeling or pseudo-alignment…

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