Automation of system building for state-of-the-art large vocabulary speech recognition using evolution strategy. - Takafumi Moriya; Tomohiro Tanaka; Takahiro Shinozaki; Shinji Watanabe 001; Kevin Duh (ASRU, 2015)

Automated structure discovery and parameter tuning of neural network language model based on evolution strategy. - Tomohiro Tanaka; Takafumi Moriya; Takahiro Shinozaki; Shinji Watanabe 001; Takaaki Hori; Kevin Duh (SLT, 2016)

Relevant Phonetic-aware Neural Acoustic Models using Native English and Japanese Speech for Japanese-English Automatic Speech Recognition. - Ryo Masumura; Suguru Kabashima; Takafumi Moriya; Satoshi Kobashikawa; Yoshikazu Yamaguchi; Yushi Aono (APSIPA, 2018)

Progressive Neural Network-based Knowledge Transfer in Acoustic Models. - Takafumi Moriya; Ryo Masumura; Taichi Asami; Yusuke Shinohara; Marc Delcroix; Yoshikazu Yamaguchi; Yushi Aono (APSIPA, 2018)

Neural Speech-to-Text Language Models for Rescoring Hypotheses of DNN-HMM Hybrid Automatic Speech Recognition Systems. - Tomohiro Tanaka; Ryo Masumura; Takafumi Moriya; Yushi Aono (APSIPA, 2018)

Multi-task Learning with Augmentation Strategy for Acoustic-to-word Attention-based Encoder-decoder Speech Recognition. - Takafumi Moriya; Sei Ueno; Yusuke Shinohara; Marc Delcroix; Yoshikazu Yamaguchi; Yushi Aono (INTERSPEECH, 2018)

Encoder Transfer for Attention-based Acoustic-to-word Speech Recognition. - Sei Ueno; Takafumi Moriya; Masato Mimura; Shinsuke Sakai; Yusuke Shinohara; Yoshikazu Yamaguchi; Yushi Aono; Tatsuya Kawahara (INTERSPEECH, 2018)

Automatic DNN Node Pruning Using Mixture Distribution-based Group Regularization. - Tsukasa Yoshida; Takafumi Moriya; Kazuho Watanabe; Yusuke Shinohara; Yoshikazu Yamaguchi; Yushi Aono (INTERSPEECH, 2018)

Efficient Building Strategy with Knowledge Distillation for Small-Footprint Acoustic Models. - Takafumi Moriya; Hiroki Kanagawa; Kiyoaki Matsui; Takaaki Fukutomi; Yusuke Shinohara; Yoshikazu Yamaguchi; Manabu Okamoto; Yushi Aono (SLT, 2018)

Revisiting Dynamic Adjustment of Language Model Scaling Factor for Automatic Speech Recognition. - Hiroshi Sato; Takafumi Moriya; Yusuke Shinohara; Ryo Masumura; Takaaki Fukutomi; Kiyoaki Matsui; Takanori Ashihara; Yoshikazu Yamaguchi; Yushi Aono (APSIPA, 2019)

Disfluency Detection Based on Speech-Aware Token-by-Token Sequence Labeling with BLSTM-CRFs and Attention Mechanisms. - Tomohiro Tanaka; Ryo Masumura; Takafumi Moriya; Takanobu Oba; Yushi Aono (APSIPA, 2019)

Large Context End-to-end Automatic Speech Recognition via Extension of Hierarchical Recurrent Encoder-decoder Models. - Ryo Masumura; Tomohiro Tanaka; Takafumi Moriya; Yusuke Shinohara; Takanobu Oba; Yushi Aono (ICASSP, 2019)

Neural Whispered Speech Detection with Imbalanced Learning. - Takanori Ashihara; Yusuke Shinohara; Hiroshi Sato; Takafumi Moriya; Kiyoaki Matsui; Takaaki Fukutomi; Yoshikazu Yamaguchi; Yushi Aono (INTERSPEECH, 2019)

End-to-End Automatic Speech Recognition with a Reconstruction Criterion Using Speech-to-Text and Text-to-Speech Encoder-Decoders. - Ryo Masumura; Hiroshi Sato; Tomohiro Tanaka; Takafumi Moriya; Yusuke Ijima; Takanobu Oba (INTERSPEECH, 2019)

Joint Maximization Decoder with Neural Converters for Fully Neural Network-Based Japanese Speech Recognition. - Takafumi Moriya; Jian Wang; Tomohiro Tanaka; Ryo Masumura; Yusuke Shinohara; Yoshikazu Yamaguchi; Yushi Aono (INTERSPEECH, 2019)

A Joint End-to-End and DNN-HMM Hybrid Automatic Speech Recognition System with Transferring Sharable Knowledge. - Tomohiro Tanaka; Ryo Masumura; Takafumi Moriya; Takanobu Oba; Yushi Aono (INTERSPEECH, 2019)

Does Speaking Training Application with Speech Recognition Motivate Junior High School Students in Actual Classroom? - A Case Study. - Satoshi Kobashikawa; Atushi Odakura; Takao Nakamura; Takeshi Mori; Kimitaka Endo; Takafumi Moriya; Ryo Masumura; Yushi Aono; Nobuaki Minematsu (SLaTE, 2019)

Evolution-Strategy-Based Automation of System Development for High-Performance Speech Recognition. - Takafumi Moriya; Tomohiro Tanaka; Takahiro Shinozaki; Shinji Watanabe 001; Kevin Duh (IEEE ACM Trans. Audio Speech Lang. Process., 2019)

Sequence-Level Consistency Training for Semi-Supervised End-to-End Automatic Speech Recognition. - Ryo Masumura; Mana Ihori; Akihiko Takashima; Takafumi Moriya; Atsushi Ando; Yusuke Shinohara (ICASSP, 2020)

Distilling Attention Weights for CTC-Based ASR Systems. - Takafumi Moriya; Hiroshi Sato; Tomohiro Tanaka; Takanori Ashihara; Ryo Masumura; Yusuke Shinohara (ICASSP, 2020)

Self-Distillation for Improving CTC-Transformer-Based ASR Systems. - Takafumi Moriya; Tsubasa Ochiai; Shigeki Karita; Hiroshi Sato; Tomohiro Tanaka; Takanori Ashihara; Ryo Masumura; Yusuke Shinohara; Marc Delcroix (INTERSPEECH, 2020)

Speech Emotion Recognition Based on Listener Adaptive Models. - Atsushi Ando; Ryo Masumura; Hiroshi Sato; Takafumi Moriya; Takanori Ashihara; Yusuke Ijima; Tomoki Toda (ICASSP, 2021)

Simpleflat: A Simple Whole-Network Pre-Training Approach for RNN Transducer-Based End-to-End Speech Recognition. - Takafumi Moriya; Takanori Ashihara; Tomohiro Tanaka; Tsubasa Ochiai; Hiroshi Sato; Atsushi Ando; Yusuke Ijima; Ryo Masumura; Yusuke Shinohara (ICASSP, 2021)

Investigating the Impact of Spectral and Temporal Degradation on End-to-End Automatic Speech Recognition Performance. - Takanori Ashihara; Takafumi Moriya; Makio Kashino (Interspeech, 2021)

Streaming End-to-End Speech Recognition for Hybrid RNN-T/Attention Architecture. - Takafumi Moriya; Tomohiro Tanaka; Takanori Ashihara; Tsubasa Ochiai; Hiroshi Sato; Atsushi Ando; Ryo Masumura; Marc Delcroix; Taichi Asami (Interspeech, 2021)

Should We Always Separate?: Switching Between Enhanced and Observed Signals for Overlapping Speech Recognition. - Hiroshi Sato; Tsubasa Ochiai; Marc Delcroix; Keisuke Kinoshita; Takafumi Moriya; Naoyuki Kamo (Interspeech, 2021)

Cross-Modal Transformer-Based Neural Correction Models for Automatic Speech Recognition. - Tomohiro Tanaka; Ryo Masumura; Mana Ihori; Akihiko Takashima; Takafumi Moriya; Takanori Ashihara; Shota Orihashi; Naoki Makishima (Interspeech, 2021)

Customer Satisfaction Estimation Using Unsupervised Representation Learning with Multi-Format Prediction Loss. - Atsushi Ando; Yumiko Murata; Ryo Masumura; Satoshi Suzuki; Naoki Makishima; Takafumi Moriya; Takanori Ashihara; Hiroshi Sato (ICASSP, 2022)

Hybrid RNN-T/Attention-Based Streaming ASR with Triggered Chunkwise Attention and Dual Internal Language Model Integration. - Takafumi Moriya; Takanori Ashihara; Atsushi Ando; Hiroshi Sato; Tomohiro Tanaka; Kohei Matsuura; Ryo Masumura; Marc Delcroix; Takahiro Shinozaki (ICASSP, 2022)

Learning to Enhance or Not: Neural Network-Based Switching of Enhanced and Observed Signals for Overlapping Speech Recognition. - Hiroshi Sato; Tsubasa Ochiai; Marc Delcroix; Keisuke Kinoshita; Naoyuki Kamo; Takafumi Moriya (ICASSP, 2022)

Deep versus Wide: An Analysis of Student Architectures for Task-Agnostic Knowledge Distillation of Self-Supervised Speech Models. - Takanori Ashihara; Takafumi Moriya; Kohei Matsuura; Tomohiro Tanaka (INTERSPEECH, 2022)

End-to-End Joint Modeling of Conversation History-Dependent and Independent ASR Systems with Multi-History Training. - Ryo Masumura; Yoshihiro Yamazaki; Saki Mizuno; Naoki Makishima; Mana Ihori; Mihiro Uchida; Hiroshi Sato; Tomohiro Tanaka; Akihiko Takashima; Satoshi Suzuki; Shota Orihashi; Takafumi Moriya; et al. (INTERSPEECH, 2022)

Streaming Target-Speaker ASR with Neural Transducer. - Takafumi Moriya; Hiroshi Sato; Tsubasa Ochiai; Marc Delcroix; Takahiro Shinozaki (INTERSPEECH, 2022)

Strategies to Improve Robustness of Target Speech Extraction to Enrollment Variations. - Hiroshi Sato; Tsubasa Ochiai; Marc Delcroix; Keisuke Kinoshita; Takafumi Moriya; Naoki Makishima; Mana Ihori; Tomohiro Tanaka; Ryo Masumura (INTERSPEECH, 2022)

Domain Adversarial Self-Supervised Speech Representation Learning for Improving Unknown Domain Downstream Tasks. - Tomohiro Tanaka; Ryo Masumura; Hiroshi Sato; Mana Ihori; Kohei Matsuura; Takanori Ashihara; Takafumi Moriya (INTERSPEECH, 2022)

On the Use of Modality-Specific Large-Scale Pre-Trained Encoders for Multimodal Sentiment Analysis. - Atsushi Ando; Ryo Masumura; Akihiko Takashima; Satoshi Suzuki; Naoki Makishima; Keita Suzuki; Takafumi Moriya; Takanori Ashihara; Hiroshi Sato (SLT, 2022)

Exploration of Language Dependency for Japanese Self-Supervised Speech Representation Models. - Takanori Ashihara; Takafumi Moriya; Kohei Matsuura; Tomohiro Tanaka (ICASSP, 2023)

Zero-Shot Text-to-Speech Synthesis Conditioned Using Self-Supervised Speech Representation Model. - Kenichi Fujita; Takanori Ashihara; Hiroki Kanagawa; Takafumi Moriya; Yusuke Ijima (ICASSP Workshops, 2023)

Leveraging Large Text Corpora For End-To-End Speech Summarization. - Kohei Matsuura; Takanori Ashihara; Takafumi Moriya; Tomohiro Tanaka; Atsunori Ogawa; Marc Delcroix; Ryo Masumura (ICASSP, 2023)

Improving Scheduled Sampling for Neural Transducer-Based ASR. - Takafumi Moriya; Takanori Ashihara; Hiroshi Sato; Kohei Matsuura; Tomohiro Tanaka; Ryo Masumura (ICASSP, 2023)

Iterative Shallow Fusion of Backward Language Model for End-To-End Speech Recognition. - Atsunori Ogawa; Takafumi Moriya; Naoyuki Kamo; Naohiro Tawara; Marc Delcroix (ICASSP, 2023)

Leveraging Language Embeddings for Cross-Lingual Self-Supervised Speech Representation Learning. - Tomohiro Tanaka; Ryo Masumura; Mana Ihori; Hiroshi Sato; Taiga Yamane; Takanori Ashihara; Kohei Matsuura; Takafumi Moriya (ICASSP, 2023)

SpeechGLUE: How Well Can Self-Supervised Speech Models Capture Linguistic Knowledge? - Takanori Ashihara; Takafumi Moriya; Kohei Matsuura; Tomohiro Tanaka; Yusuke Ijima; Taichi Asami; Marc Delcroix; Yukinori Honma (INTERSPEECH, 2023)

VC-T: Streaming Voice Conversion Based on Neural Transducer. - Hiroki Kanagawa; Takafumi Moriya; Yusuke Ijima (INTERSPEECH, 2023)

End-to-End Joint Target and Non-Target Speakers ASR. - Ryo Masumura; Naoki Makishima; Taiga Yamane; Yoshihiko Yamazaki; Saki Mizuno; Mana Ihori; Mihiro Uchida; Keita Suzuki; Hiroshi Sato; Tomohiro Tanaka; Akihiko Takashima; Satoshi Suzuki; et al. (INTERSPEECH, 2023)

Transfer Learning from Pre-trained Language Models Improves End-to-End Speech Summarization. - Kohei Matsuura; Takanori Ashihara; Takafumi Moriya; Tomohiro Tanaka; Takatomo Kano; Atsunori Ogawa; Marc Delcroix (INTERSPEECH, 2023)

Knowledge Distillation for Neural Transducer-based Target-Speaker ASR: Exploiting Parallel Mixture/Single-Talker Speech Data. - Takafumi Moriya; Hiroshi Sato; Tsubasa Ochiai; Marc Delcroix; Takanori Ashihara; Kohei Matsuura; Tomohiro Tanaka; Ryo Masumura; Atsunori Ogawa; Taichi Asami (INTERSPEECH, 2023)

Downstream Task Agnostic Speech Enhancement with Self-Supervised Representation Loss. - Hiroshi Sato; Ryo Masumura; Tsubasa Ochiai; Marc Delcroix; Takafumi Moriya; Takanori Ashihara; Kentaro Shinayama; Saki Mizuno; Mana Ihori; Tomohiro Tanaka; Nobukatsu Hojo (INTERSPEECH, 2023)

Streaming End-to-End Target-Speaker Automatic Speech Recognition and Activity Detection. - Takafumi Moriya; Hiroshi Sato; Tsubasa Ochiai; Marc Delcroix; Takahiro Shinozaki (IEEE Access, 2023)

What Do Self-Supervised Speech and Speaker Models Learn? New Findings from a Cross Model Layer-Wise Analysis. - Takanori Ashihara; Marc Delcroix; Takafumi Moriya; Kohei Matsuura; Taichi Asami; Yusuke Ijima (ICASSP, 2024)

Noise-Robust Zero-Shot Text-to-Speech Synthesis Conditioned on Self-Supervised Speech-Representation Model with Adapters. - Kenichi Fujita; Hiroshi Sato; Takanori Ashihara; Hiroki Kanagawa; Marc Delcroix; Takafumi Moriya; Yusuke Ijima (ICASSP, 2024)

Factor-Conditioned Speaking-Style Captioning. - Atsushi Ando; Takafumi Moriya; Shota Horiguchi; Ryo Masumura (INTERSPEECH, 2024)

Pre-training Neural Transducer-based Streaming Voice Conversion for Faster Convergence and Alignment-free Training. - Hiroki Kanagawa; Takafumi Moriya; Yusuke Ijima (INTERSPEECH, 2024)

Unified Multi-Talker ASR with and without Target-speaker Enrollment. - Ryo Masumura; Naoki Makishima; Tomohiro Tanaka; Mana Ihori; Naotaka Kawata; Shota Orihashi; Kazutoshi Shinoda; Taiga Yamane; Saki Mizuno; Keita Suzuki; Satoshi Suzuki; Nobukatsu Hojo; et al. (INTERSPEECH, 2024)

Sentence-wise Speech Summarization: Task, Datasets, and End-to-End Modeling with LM Knowledge Distillation. - Kohei Matsuura; Takanori Ashihara; Takafumi Moriya; Masato Mimura; Takatomo Kano; Atsunori Ogawa; Marc Delcroix (INTERSPEECH, 2024)

Boosting Hybrid Autoregressive Transducer-based ASR with Internal Acoustic Model Training and Dual Blank Thresholding. - Takafumi Moriya; Takanori Ashihara; Masato Mimura; Hiroshi Sato; Kohei Matsuura; Ryo Masumura; Taichi Asami (INTERSPEECH, 2024)

SpeakerBeam-SS: Real-time Target Speaker Extraction with Lightweight Conv-TasNet and State Space Modeling. - Hiroshi Sato; Takafumi Moriya; Masato Mimura; Shota Horiguchi; Tsubasa Ochiai; Takanori Ashihara; Atsushi Ando; Kentaro Shinayama; Marc Delcroix (INTERSPEECH, 2024)

Investigation of Speaker Representation for Target-Speaker Speech Processing. - Takanori Ashihara; Takafumi Moriya; Shota Horiguchi; Junyi Peng; Tsubasa Ochiai; Marc Delcroix; Kohei Matsuura; Hiroshi Sato (SLT, 2024)

Recursive Attentive Pooling For Extracting Speaker Embeddings From Multi-Speaker Recordings. - Shota Horiguchi; Atsushi Ando; Takafumi Moriya; Takanori Ashihara; Hiroshi Sato; Naohiro Tawara; Marc Delcroix (SLT, 2024)

Applying LLMs for Rescoring N-best ASR Hypotheses of Casual Conversations: Effects of Domain Adaptation and Context Carry-over. - Atsunori Ogawa; Naoyuki Kamo; Kohei Matsuura; Takanori Ashihara; Takafumi Moriya; Takatomo Kano; Naohiro Tawara; Marc Delcroix (CoRR, 2024)

Guided Speaker Embedding. - Shota Horiguchi; Takafumi Moriya; Atsushi Ando; Takanori Ashihara; Hiroshi Sato; Naohiro Tawara; Marc Delcroix (ICASSP, 2025)

Advancing Streaming ASR with Chunk-wise Attention and Trans-chunk Selective State Spaces. - Masato Mimura; Takafumi Moriya; Kohei Matsuura (ICASSP, 2025)

Alignment-Free Training for Transducer-based Multi-Talker ASR. - Takafumi Moriya; Shota Horiguchi; Marc Delcroix; Ryo Masumura; Takanori Ashihara; Hiroshi Sato; Kohei Matsuura; Masato Mimura (ICASSP, 2025)

Generic Speech Enhancement with Self-Supervised Representation Space Loss. - Hiroshi Sato; Tsubasa Ochiai; Marc Delcroix; Takafumi Moriya; Takanori Ashihara; Ryo Masumura (CoRR, 2025)

Microphone array geometry-independent multi-talker distant ASR: NTT system for DASR task of the CHiME-8 challenge. - Naoyuki Kamo; Naohiro Tawara; Atsushi Ando; Takatomo Kano; Hiroshi Sato; Rintaro Ikeshita; Takafumi Moriya; Shota Horiguchi; Kohei Matsuura; Atsunori Ogawa; Alexis Plaquet; Takanori Ashihara; et al. (Comput. Speech Lang., 2026)