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This paper describes the winning systems developed by the BUT team for the four tracks of the Second DIHARD Speech Diarization Challenge. For tracks 1 and 2 the systems were mainly based on performing agglomerative hierarchical clustering…

This technical report outlines our submission system for the CHiME-8 NOTSOFAR-1 Challenge. The primary difficulty of this challenge is the dataset recorded across various conference rooms, which captures real-world complexities such as high…

In real-world applications, automatic speech recognition (ASR) systems must handle overlapping speech from multiple speakers and recognize rare words like technical terms. Traditional methods address multi-talker ASR and contextual biasing…

Audio and Speech Processing · Electrical Eng. & Systems 2025-06-17 Jiajun He , Naoki Sawada , Koichi Miyazaki , Tomoki Toda

The paper describes the BUT's speech translation systems. The systems are English$\longrightarrow$German offline speech translation systems. The systems are based on our previous works \cite{Jointly_trained_transformers}. Though End-to-End…

Computation and Language · Computer Science 2020-10-23 Hari Krishna Vydana , Lukas Burget , Jan Cernocky

Speech separation has been successfully applied as a frontend processing module of conversation transcription systems thanks to its ability to handle overlapped speech and its flexibility to combine with downstream tasks such as automatic…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-06 Jian Wu , Zhuo Chen , Sanyuan Chen , Yu Wu , Takuya Yoshioka , Naoyuki Kanda , Shujie Liu , Jinyu Li

Automatic Speech Recognition (ASR) systems in real-world settings need to handle imperfect audio, often degraded by hardware limitations or environmental noise, while accommodating diverse user groups. In human-robot interaction (HRI),…

Robotics · Computer Science 2025-08-26 Theresa Pekarek Rosin , Julia Gachot , Henri-Leon Kordt , Matthias Kerzel , Stefan Wermter

Thanks to the rise of self-supervised learning, automatic speech recognition (ASR) systems now achieve near-human performance on a wide variety of datasets. However, they still lack generalization capability and are not robust to domain…

Machine Learning · Computer Science 2023-03-15 Lucas Maison , Yannick Estève

With the growing adoption of wearable devices such as smart glasses for AI assistants, wearer speech recognition (WSR) is becoming increasingly critical to next-generation human-computer interfaces. However, in real environments,…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-19 Yufeng Yang , Yiteng Huang , Yong Xu , Li Wan , Suwon Shon , Yang Liu , Yifeng Fan , Zhaojun Yang , Olivier Siohan , Yue Liu , Ming Sun , Florian Metze

We introduce the Universal Speech Model (USM), a single large model that performs automatic speech recognition (ASR) across 100+ languages. This is achieved by pre-training the encoder of the model on a large unlabeled multilingual dataset…

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

Supervised models for speech enhancement are trained using artificially generated mixtures of clean speech and noise signals. However, the synthetic training conditions may not accurately reflect real-world conditions encountered during…

We present state-of-the-art automatic speech recognition (ASR) systems employing a standard hybrid DNN/HMM architecture compared to an attention-based encoder-decoder design for the LibriSpeech task. Detailed descriptions of the system…

Computation and Language · Computer Science 2019-10-02 Christoph Lüscher , Eugen Beck , Kazuki Irie , Markus Kitza , Wilfried Michel , Albert Zeyer , Ralf Schlüter , Hermann Ney

Recently, the end-to-end training approach for multi-channel ASR has shown its effectiveness, which usually consists of a beamforming front-end and a recognition back-end. However, the end-to-end training becomes more difficult due to the…

Audio and Speech Processing · Electrical Eng. & Systems 2022-10-11 Keyu An , Ji Xiao , Zhijian Ou

This work presents our end-to-end (E2E) automatic speech recognition (ASR) model targetting at robust speech recognition, called Integraded speech Recognition with enhanced speech Input for Self-supervised learning representation (IRIS).…

Sound · Computer Science 2022-04-04 Xuankai Chang , Takashi Maekaku , Yuya Fujita , Shinji Watanabe

In general, the performance of automatic speech recognition (ASR) systems is significantly degraded due to the mismatch between training and test environments. Recently, a deep-learning-based image-to-image translation technique to…

Audio and Speech Processing · Electrical Eng. & Systems 2019-04-15 Jong-Hyeon Park , Myungwoo Oh , Hyung-Min Park

The paper describes BUT's English to German offline speech translation(ST) systems developed for IWSLT2021. They are based on jointly trained Automatic Speech Recognition-Machine Translation models. Their performances is evaluated on…

Computation and Language · Computer Science 2021-07-14 Hari Krishna Vydana , Martin Karafi'at , Luk'as Burget , "Honza" Cernock'y

Automatic Speech Recognition (ASR) technologies have transformed human-computer interaction; however, low-resource languages in Africa remain significantly underrepresented in both research and practical applications. This study…

Automatic Speech Recognition (ASR) has undergone a profound transformation over the past decade, driven by advances in deep learning. This survey provides a comprehensive overview of the modern era of ASR, charting its evolution from…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-16 Md. Nayeem , Md Shamse Tabrej , Kabbojit Jit Deb , Shaonti Goswami , Md. Azizul Hakim

This paper presents the BUT submission to the WildSpoof Challenge, focusing on the Spoofing-robust Automatic Speaker Verification (SASV) track. We propose a SASV framework designed to bridge the gap between general audio understanding and…

Audio and Speech Processing · Electrical Eng. & Systems 2025-12-16 Junyi Peng , Jin Li , Johan Rohdin , Lin Zhang , Miroslav Hlaváček , Oldrich Plchot

This paper describes joint effort of BUT and Telef\'onica Research on development of Automatic Speech Recognition systems for Albayzin 2020 Challenge. We compare approaches based on either hybrid or end-to-end models. In hybrid modelling,…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-01 Martin Kocour , Guillermo Cámbara , Jordi Luque , David Bonet , Mireia Farrús , Martin Karafiát , Karel Veselý , Jan ''Honza'' Ĉernocký