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To realize robust end-to-end Automatic Speech Recognition(E2E ASR) under radio communication condition, we propose a multitask-based method to joint train a Speech Enhancement (SE) module as the front-end and an E2E ASR model as the…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-23 Duo Ma , Nana Hou , Van Tung Pham , Haihua Xu , Eng Siong Chng

End-to-end (E2E) multi-channel ASR systems show state-of-the-art performance in far-field ASR tasks by joint training of a multi-channel front-end along with the ASR model. The main limitation of such systems is that they are usually…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-24 Marco Gaudesi , Felix Weninger , Dushyant Sharma , Puming Zhan

Recently cross-channel attention, which better leverages multi-channel signals from microphone array, has shown promising results in the multi-party meeting scenario. Cross-channel attention focuses on either learning global correlations…

Sound · Computer Science 2022-10-12 Fan Yu , Shiliang Zhang , Pengcheng Guo , Yuhao Liang , Zhihao Du , Yuxiao Lin , Lei Xie

Continual learning for end-to-end automatic speech recognition has to contend with a number of difficulties. Fine-tuning strategies tend to lose performance on data already seen, a process known as catastrophic forgetting. On the other…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-18 Peter Plantinga , Jaekwon Yoo , Chandra Dhir

Conventional speech-to-text translation (ST) systems are trained on single-speaker utterances, and they may not generalize to real-life scenarios where the audio contains conversations by multiple speakers. In this paper, we tackle…

Automatic speech recognition (ASR) models are typically designed to operate on a single input data type, e.g. a single or multi-channel audio streamed from a device. This design decision assumes the primary input data source does not change…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-30 Gokce Keskin , Minhua Wu , Brian King , Harish Mallidi , Yang Gao , Jasha Droppo , Ariya Rastrow , Roland Maas

In this work, we exploit speech enhancement for improving a recurrent neural network transducer (RNN-T) based ASR system. We employ a dense convolutional recurrent network (DCRN) for complex spectral mapping based speech enhancement, and…

Sound · Computer Science 2020-11-10 Ashutosh Pandey , Chunxi Liu , Yun Wang , Yatharth Saraf

Discretized representations of speech signals are efficient alternatives to continuous features for various speech applications, including automatic speech recognition (ASR) and speech language models. However, these representations, such…

Sound · Computer Science 2026-02-05 Takanori Ashihara , Shota Horiguchi , Kohei Matsuura , Tsubasa Ochiai , Marc Delcroix

The rising interest in single-channel multi-speaker speech separation sparked development of End-to-End (E2E) approaches to multi-speaker speech recognition. However, up until now, state-of-the-art neural network-based time domain source…

Audio and Speech Processing · Electrical Eng. & Systems 2020-04-14 Thilo von Neumann , Keisuke Kinoshita , Lukas Drude , Christoph Boeddeker , Marc Delcroix , Tomohiro Nakatani , Reinhold Haeb-Umbach

This paper presents a method to train end-to-end automatic speech recognition (ASR) models using unpaired data. Although the end-to-end approach can eliminate the need for expert knowledge such as pronunciation dictionaries to build ASR…

Computation and Language · Computer Science 2019-05-24 Takaaki Hori , Ramon Astudillo , Tomoki Hayashi , Yu Zhang , Shinji Watanabe , Jonathan Le Roux

Pre-trained models, especially self-supervised learning (SSL) models, have demonstrated impressive results in automatic speech recognition (ASR) task. While most applications of SSL models focus on leveraging continuous representations as…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-03 Zehan Li , Yan Yang , Xueqing Li , Jian Kang , Xiao-Lei Zhang , Jie Li

Spectral mask estimation using bidirectional long short-term memory (BLSTM) neural networks has been widely used in various speech enhancement applications, and it has achieved great success when it is applied to multichannel enhancement…

Audio and Speech Processing · Electrical Eng. & Systems 2018-03-28 Aswin Shanmugam Subramanian , Szu-Jui Chen , Shinji Watanabe

Recent works showed that end-to-end neural approaches tend to become very popular for spoken language understanding (SLU). Through the term end-to-end, one considers the use of a single model optimized to extract semantic information…

Computation and Language · Computer Science 2022-04-05 Salima Mdhaffar , Jarod Duret , Titouan Parcollet , Yannick Estève

Recently, there has been growing interest in multi-speaker speech recognition, where the utterances of multiple speakers are recognized from their mixture. Promising techniques have been proposed for this task, but earlier works have…

Sound · Computer Science 2018-05-16 Hiroshi Seki , Takaaki Hori , Shinji Watanabe , Jonathan Le Roux , John R. Hershey

It has been shown that the intelligibility of noisy speech can be improved by speech enhancement (SE) algorithms. However, monaural SE has not been established as an effective frontend for automatic speech recognition (ASR) in noisy…

Sound · Computer Science 2024-03-12 Yufeng Yang , Ashutosh Pandey , DeLiang Wang

Single-channel speech enhancement is utilized in various tasks to mitigate the effect of interfering signals. Conventionally, to ensure the speech enhancement performs optimally, the speech enhancement has needed to be tuned for each task.…

Audio and Speech Processing · Electrical Eng. & Systems 2025-07-11 Hiroshi Sato , Tsubasa Ochiai , Marc Delcroix , Takafumi Moriya , Takanori Ashihara , Ryo Masumura

For automatic speech translation (AST), end-to-end approaches are outperformed by cascaded models that transcribe with automatic speech recognition (ASR), then translate with machine translation (MT). A major cause of the performance gap is…

Computation and Language · Computer Science 2019-10-23 Juan Pino , Liezl Puzon , Jiatao Gu , Xutai Ma , Arya D. McCarthy , Deepak Gopinath

Despite successful applications of end-to-end approaches in multi-channel speech recognition, the performance still degrades severely when the speech is corrupted by reverberation. In this paper, we integrate the dereverberation module into…

Audio and Speech Processing · Electrical Eng. & Systems 2021-11-18 Wangyou Zhang , Aswin Shanmugam Subramanian , Xuankai Chang , Shinji Watanabe , Yanmin Qian

Recently, end-to-end ASR based either on sequence-to-sequence networks or on the CTC objective function gained a lot of interest from the community, achieving competitive results over traditional systems using robust but complex pipelines.…

Computation and Language · Computer Science 2019-10-24 Florian Boyer , Jean-Luc Rouas

End-to-end diarization presents an attractive alternative to standard cascaded diarization systems because a single system can handle all aspects of the task at once. Many flavors of end-to-end models have been proposed but all of them…

Audio and Speech Processing · Electrical Eng. & Systems 2023-02-27 Federico Landini , Mireia Diez , Alicia Lozano-Diez , Lukáš Burget