Agricultural robots in Japan. - Nobutaka Ito (IROS, 1990)

A blind noise decorrelation approach with crystal arrays on designing post-filters for diffuse noise suppression. - Nobutaka Ito; Nobutaka Ono; Shigeki Sagayama (ICASSP, 2008)

Blind alignment of asynchronously recorded signals for distributed microphone array. - Nobutaka Ono; Hitoshi Kohno; Nobutaka Ito; Shigeki Sagayama (WASPAA, 2009)

Crystal-MUSIC: Accurate Localization of Multiple Sources in Diffuse Noise Environments Using Crystal-Shaped Microphone Arrays. - Nobutaka Ito; Emmanuel Vincent 001; Nobutaka Ono; Rémi Gribonval; Shigeki Sagayama (LVA/ICA, 2010)

Designing the Wiener post-filter for diffuse noise suppression using imaginary parts of inter-channel cross-spectra. - Nobutaka Ito; Nobutaka Ono; Emmanuel Vincent 001; Shigeki Sagayama (ICASSP, 2010)

Diffuse Noise Suppression Using Crystal-Shaped Microphone Arrays. - Nobutaka Ito; Hikaru Shimizu; Nobutaka Ono; Shigeki Sagayama (IEEE Trans. Speech Audio Process., 2011)

Robust microphone array signal processing against diffuse noise. - Nobutaka Ito (2012)

Permutation-free convolutive blind source separation via full-band clustering based on frequency-independent source presence priors. - Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (ICASSP, 2013)

General algorithms for estimating spectrogram and transfer functions of target signal for blind suppression of diffuse noise. - Nobutaka Ito; Emmanuel Vincent 001; Nobutaka Ono; Shigeki Sagayama (MLSP, 2013)

Source number estimation based on clustering of speech activity sequences for microphone array processing. - Ingrid Jafari; Nobutaka Ito; Mehrez Souden; Shoko Araki; Tomohiro Nakatani (MLSP, 2013)

The 2013 Signal Separation Evaluation Campaign. - Nobutaka Ono; Zbynek Koldovský; Shigeki Miyabe; Nobutaka Ito (MLSP, 2013)

Defeating reverberation: Advanced dereverberation and recognition techniques for hands-free speech recognition. - Marc Delcroix; Takuya Yoshioka; Atsunori Ogawa; Yotaro Kubo; Masakiyo Fujimoto; Nobutaka Ito; Keisuke Kinoshita; Miquel Espi; Shoko Araki; Takaaki Hori; Tomohiro Nakatani (GlobalSIP, 2014)

Probabilistic integration of diffuse noise suppression and dereverberation. - Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (ICASSP, 2014)

Relaxed disjointness based clustering for joint blind source separation and dereverberation. - Nobutaka Ito; Shoko Araki; Takuya Yoshioka; Tomohiro Nakatani (IWAENC, 2014)

The NTT CHiME-3 system: Advances in speech enhancement and recognition for mobile multi-microphone devices. - Takuya Yoshioka; Nobutaka Ito; Marc Delcroix; Atsunori Ogawa; Keisuke Kinoshita; Masakiyo Fujimoto; Chengzhu Yu; Wojciech J. Fabian; Miquel Espi; Takuya Higuchi; Shoko Araki; Tomohiro Nakatani (ASRU, 2015)

Permutation-free clustering of relative transfer function features for blind source separation. - Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (EUSIPCO, 2015)

The 2015 Signal Separation Evaluation Campaign. - Nobutaka Ono; Zafar Rafii; Daichi Kitamura; Nobutaka Ito; Antoine Liutkus (LVA/ICA, 2015)

Strategies for distant speech recognitionin reverberant environments. - Marc Delcroix; Takuya Yoshioka; Atsunori Ogawa; Yotaro Kubo; Masakiyo Fujimoto; Nobutaka Ito; Keisuke Kinoshita; Miquel Espi; Shoko Araki; Takaaki Hori; Tomohiro Nakatani (EURASIP J. Adv. Signal Process., 2015)

Blind Suppression of Nonstationary Diffuse Acoustic Noise Based on Spatial Covariance Matrix Decomposition. - Nobutaka Ito; Emmanuel Vincent 001; Tomohiro Nakatani; Nobutaka Ono; Shoko Araki; Shigeki Sagayama (J. Signal Process. Syst., 2015)

Complex angular central Gaussian mixture model for directional statistics in mask-based microphone array signal processing. - Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (EUSIPCO, 2016)

Robust MVDR beamforming using time-frequency masks for online/offline ASR in noise. - Takuya Higuchi; Nobutaka Ito; Takuya Yoshioka; Tomohiro Nakatani (ICASSP, 2016)

Modeling audio directional statistics using a complex bingham mixture model for blind source extraction from diffuse noise. - Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (ICASSP, 2016)

Modeling audio directional statistics using a probabilistic spatial dictionary for speaker diarization in real meetings. - Mahmoud Fakhry; Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (IWAENC, 2016)

Human coded orchestra: a system for extemporary group singing performance. - Yuzu Saijo; Kenta Suzuki; Nobutaka Ito; Amy Koike; Yoichi Ochiai (SIGGRAPH Asia Posters, 2016)

Gushed light field: design method for aerosol-based fog display. - Ippei Suzuki; Shuntarou Yoshimitsu; Keisuke Kawahara; Nobutaka Ito; Atsushi Shinoda; Akira Ishii; Takatoshi Yoshida; Yoichi Ochiai (SIGGRAPH Asia Posters, 2016)

Gushed Diffusers: Fast-moving, Floating, and Lightweight Midair Display. - Ippei Suzuki; Shuntarou Yoshimitsu; Keisuke Kawahara; Nobutaka Ito; Atsushi Shinoda; Akira Ishii; Takatoshi Yoshida; Yoichi Ochiai (UIST (Adjunct Volume), 2016)

Multichannel Speech Enhancement Approaches to DNN-Based Far-Field Speech Recognition. - Marc Delcroix; Takuya Yoshioka; Nobutaka Ito; Atsunori Ogawa; Keisuke Kinoshita; Masakiyo Fujimoto; Takuya Higuchi; Shoko Araki; Tomohiro Nakatani (New Era for Robust Speech Recognition, Exploiting Deep Learning, 2017)

Design method for gushed light field: aerosol-based aerial and instant display. - Ippei Suzuki; Shuntarou Yoshimitsu; Keisuke Kawahara; Nobutaka Ito; Atsushi Shinoda; Akira Ishii; Takatoshi Yoshida; Yoichi Ochiai (AH, 2017)

Gushed Light Field: Video Showcase of Aerosol-Based Fog Display. - Ippei Suzuki; Shuntarou Yoshimitsu; Keisuke Kawahara; Nobutaka Ito; Atsushi Shinoda; Akira Ishii; Takatoshi Yoshida; Yoichi Ochiai (CHI Extended Abstracts, 2017)

Data-driven and physical model-based designs of probabilistic spatial dictionary for online meeting diarization and adaptive beamforming. - Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (EUSIPCO, 2017)

Online meeting recognition in noisy environments with time-frequency mask based MVDR beamforming. - Shoko Araki; Nobutaka Ito; Marc Delcroix; Atsunori Ogawa; Keisuke Kinoshita; Takuya Higuchi; Takuya Yoshioka; Dung T. Tran; Shigeki Karita; Tomohiro Nakatani (HSCMA, 2017)

The 2016 Signal Separation Evaluation Campaign. - Antoine Liutkus; Fabian-Robert Stöter; Zafar Rafii; Daichi Kitamura; Bertrand Rivet; Nobutaka Ito; Nobutaka Ono; Julie Fontecave (LVA/ICA, 2017)

Probabilistic spatial dictionary based online adaptive beamforming for meeting recognition in noisy and reverberant environments. - Nobutaka Ito; Shoko Araki; Marc Delcroix; Tomohiro Nakatani (ICASSP, 2017)

Integrating DNN-based and spatial clustering-based mask estimation for robust MVDR beamforming. - Tomohiro Nakatani; Nobutaka Ito; Takuya Higuchi; Shoko Araki; Keisuke Kinoshita (ICASSP, 2017)

Demo hour. - Nobutaka Ito; Akira Ishii; Yoichi Ochiai (Interactions, 2017)

Online MVDR Beamformer Based on Complex Gaussian Mixture Model With Spatial Prior for Noise Robust ASR. - Takuya Higuchi; Nobutaka Ito; Shoko Araki; Takuya Yoshioka; Marc Delcroix; Tomohiro Nakatani (IEEE ACM Trans. Audio Speech Lang. Process., 2017)

FastFCA: Joint Diagonalization Based Acceleration of Audio Source Separation Using a Full-Rank Spatial Covariance Model. - Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (EUSIPCO, 2018)

Noisy cGMM: Complex Gaussian Mixture Model with Non-Sparse Noise Model for Joint Source Separation and Denoising. - Nobutaka Ito; Christopher Schymura; Shoko Araki; Tomohiro Nakatani (EUSIPCO, 2018)

Multiplicative Updates and Joint Diagonalization Based Acceleration for Under-Determined BSS Using a Full-Rank Spatial Covariance Model. - Nobutaka Ito; Tomohiro Nakatani (GlobalSIP, 2018)

The 2018 Signal Separation Evaluation Campaign. - Fabian-Robert Stöter; Antoine Liutkus; Nobutaka Ito (LVA/ICA, 2018)

Permutation-Free Cgmm: Complex Gaussian Mixture Model with Inverse Wishart Mixture Model Based Spatial Prior for Permutation-Free Source Separation and Source Counting. - Juan Azcarreta; Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (ICASSP, 2018)

Frame-by-Frame Closed-Form Update for Mask-Based Adaptive MVDR Beamforming. - Takuya Higuchi; Keisuke Kinoshita; Nobutaka Ito; Shigeki Karita; Tomohiro Nakatani (ICASSP, 2018)

Maximum-Likelihood Online Speaker Diarization in Noisy Meetings Based on Categorical Mixture Model and Probabilistic Spatial Dictionary. - Nobutaka Ito; Takashi Makino; Shoko Araki; Tomohiro Nakatani (ICASSP, 2018)

Fastfca-As: Joint Diagonalization Based Acceleration of Full-Rank Spatial Covariance Analysis for Separating any Number of Sources. - Nobutaka Ito; Tomohiro Nakatani (IWAENC, 2018)

Online Integration of DNN-Based and Spatial Clustering-Based Mask Estimation for Robust MVDR Beamforming. - Yutaro Matsui; Tomohiro Nakatani; Marc Delcroix; Keisuke Kinoshita; Nobutaka Ito; Shoko Araki; Shoji Makino (IWAENC, 2018)

FastFCA: A Joint Diagonalization Based Fast Algorithm for Audio Source Separation Using A Full-Rank Spatial Covariance Model. - Nobutaka Ito; Shoko Araki; Tomohiro Nakatani (CoRR, 2018)

A Unifying Framework for Blind Source Separation Based on A Joint Diagonalizability Constraint. - Rintaro Ikeshita; Nobutaka Ito; Tomohiro Nakatani; Hiroshi Sawada (EUSIPCO, 2019)

Computational Acceleration and Smart Initialization of Full-RANK Spatial Covariance Analysis. - Hiroshi Sawada; Rintaro Ikeshita; Nobutaka Ito; Tomohiro Nakatani (EUSIPCO, 2019)

FastMNMF: Joint Diagonalization Based Accelerated Algorithms for Multichannel Nonnegative Matrix Factorization. - Nobutaka Ito; Tomohiro Nakatani (ICASSP, 2019)

Independent Low-Rank Matrix Analysis with Decorrelation Learning. - Rintaro Ikeshita; Nobutaka Ito; Tomohiro Nakatani; Hiroshi Sawada (WASPAA, 2019)

A Multi-Target Track-Before-Detect Particle Filter Using Superpositional Data in Non-Gaussian Noise. - Nobutaka Ito; Simon J. Godsill (IEEE Signal Process. Lett., 2020)

A Joint Diagonalization Based Efficient Approach to Underdetermined Blind Audio Source Separation Using the Multichannel Wiener Filter. - Nobutaka Ito; Rintaro Ikeshita; Hiroshi Sawada; Tomohiro Nakatani (IEEE ACM Trans. Audio Speech Lang. Process., 2021)

Audio Signal Enhancement with Learning from Positive and Unlabelled Data. - Nobutaka Ito; Masashi Sugiyama (CoRR, 2022)

Audio Signal Enhancement with Learning from Positive and Unlabeled Data. - Nobutaka Ito; Masashi Sugiyama (ICASSP, 2023)

30+ Years of Source Separation Research: Achievements and Future Challenges. - Shoko Araki; Nobutaka Ito; Reinhold Haeb-Umbach; Gordon Wichern; Zhong-Qiu Wang; Yuki Mitsufuji (ICASSP, 2025)