Kenta Niwa

Publication Activity (10 Years)

Years Active: 2008-2024
Publications (10 Years): 60

Top Topics

Speech Enhancement

Top Venues

IEEE Trans. Signal Inf. Process. over Networks

IEEE ACM Trans. Audio Speech Lang. Process.

Publications

Takumi Fukami, Tomoya Murata, Kenta Niwa, Iifan Tyou
DP-Norm: Differential Privacy Primal-Dual Algorithm for Decentralized Federated Learning. IEEE Trans. Inf. Forensics Secur. 19 (2024)
Tomoya Murata, Kenta Niwa, Takumi Fukami, Iifan Tyou
Simple Minimax Optimal Byzantine Robust Algorithm for Nonconvex Objectives with Uniform Gradient Heterogeneity. ICLR (2024)
Haimin Zhang, Min Xu, Guoqiang Zhang, Kenta Niwa
SSFG: Stochastically Scaling Features and Gradients for Regularizing Graph Convolutional Networks. IEEE Trans. Neural Networks Learn. Syst. 35 (2) (2024)
Iifan Tyou, Tomoya Murata, Takumi Fukami, Yuki Takezawa, Kenta Niwa
A Localized Primal-Dual Method for Centralized/Decentralized Federated Learning Robust to Data Heterogeneity. IEEE Trans. Signal Inf. Process. over Networks 10 (2024)
Yuki Takezawa, Han Bao, Ryoma Sato, Kenta Niwa, Makoto Yamada
Polyak Meets Parameter-free Clipped Gradient Descent. CoRR (2024)
Shoichiro Takeda, Yasunori Akagi, Naoki Marumo, Kenta Niwa
Optimal Transport with Cyclic Symmetry. AAAI (2024)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
On Accelerating Diffusion-Based Sampling Processes via Improved Integration Approximation. ICLR (2024)
Kenta Niwa, Hiro Ishii, Hiroshi Sawada, Akinori Fujino, Noboru Harada, Rio Yokota
Natural Gradient Primal-Dual Method for Decentralized Learning. IEEE Trans. Signal Inf. Process. over Networks 10 (2024)
Ryoma Sato, Yuki Takezawa, Han Bao, Kenta Niwa, Makoto Yamada
Embarrassingly Simple Text Watermarks. CoRR (2023)
Yuki Takezawa, Ryoma Sato, Han Bao, Kenta Niwa, Makoto Yamada
Necessary and Sufficient Watermark for Large Language Models. CoRR (2023)
Yuki Takezawa, Ryoma Sato, Han Bao, Kenta Niwa, Makoto Yamada
Beyond Exponential Graph: Communication-Efficient Topologies for Decentralized Learning via Finite-time Convergence. NeurIPS (2023)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
A DNN Optimizer that Improves over AdaBelief by Suppression of the Adaptive Stepsize Range. Trans. Mach. Learn. Res. 2023 (2023)
Yuki Takezawa, Han Bao, Kenta Niwa, Ryoma Sato, Makoto Yamada
Momentum Tracking: Momentum Acceleration for Decentralized Deep Learning on Heterogeneous Data. Trans. Mach. Learn. Res. 2023 (2023)
Yuki Takezawa, Kenta Niwa, Makoto Yamada
Communication Compression for Decentralized Learning With Operator Splitting Methods. IEEE Trans. Signal Inf. Process. over Networks 9 (2023)
Yuki Takezawa, Ryoma Sato, Han Bao, Kenta Niwa, Makoto Yamada
Beyond Exponential Graph: Communication-Efficient Topologies for Decentralized Learning via Finite-time Convergence. CoRR (2023)
Shoichiro Takeda, Yasunori Akagi, Naoki Marumo, Kenta Niwa
Optimal Transport with Cyclic Symmetry. CoRR (2023)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
Lookahead Diffusion Probabilistic Models for Refining Mean Estimation. CoRR (2023)
Kenta Niwa, Naonori Ueda, Hiroshi Sawada, Akinori Fujino, Shoichiro Takeda, Guoqiang Zhang, W. Bastiaan Kleijn
CoordiNet: Constrained Dynamics Learning for State Coordination Over Graph. IEEE Trans. Signal Inf. Process. over Networks 9 (2023)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
Lookahead Diffusion Probabilistic Models for Refining Mean Estimation. CVPR (2023)
Yuki Takezawa, Kenta Niwa, Makoto Yamada
Theoretical Analysis of Primal-Dual Algorithm for Non-Convex Stochastic Decentralized Optimization. CoRR (2022)
Yuki Takezawa, Han Bao, Kenta Niwa, Ryoma Sato, Makoto Yamada
Momentum Tracking: Momentum Acceleration for Decentralized Deep Learning on Heterogeneous Data. CoRR (2022)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
Revisiting the Primal-Dual Method of Multipliers for Optimisation Over Centralised Networks. IEEE Trans. Signal Inf. Process. over Networks 8 (2022)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
On Exploiting Layerwise Gradient Statistics for Effective Training of Deep Neural Networks. CoRR (2022)
Yuki Takezawa, Kenta Niwa, Makoto Yamada
Communication Compression for Decentralized Learning with Operator Splitting Methods. CoRR (2022)
Shoichiro Takeda, Kenta Niwa, Mariko Isogawa, Shinya Shimizu, Kazuki Okami, Yushi Aono
Bilateral Video Magnification Filter. CVPR (2022)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
Revisiting the Primal-Dual Method of Multipliers for Optimisation over Centralised Networks. CoRR (2021)
Kenta Imaizumi, Kenta Niwa, Kimitaka Tsutsumi
Loudspeaker Array to Maximize Acoustic Contrast Using Proximal Splitting Method. EUSIPCO (2021)
Kenta Niwa, Guoqiang Zhang, W. Bastiaan Kleijn, Noboru Harada, Hiroshi Sawada, Akinori Fujino
Asynchronous Decentralized Optimization With Implicit Stochastic Variance Reduction. ICML (2021)
Ryotaro Sato, Kenta Niwa, Kazunori Kobayashi
Ambisonic Signal Processing DNNs Guaranteeing Rotation, Scale and Time Translation Equivariance. IEEE ACM Trans. Audio Speech Lang. Process. 29 (2021)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
Extending AdamW by Leveraging Its Second Moment and Magnitude. CoRR (2021)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
Projected Weight Regularization to Improve Neural Network Generalization. ICASSP (2020)
Kenta Niwa, Hironobu Chiba, Noboru Harada, Guoqiang Zhang, W. Bastiaan Kleijn
Microphone Array Wiener Post Filtering Using Monotone Operator Splitting. IEEE ACM Trans. Audio Speech Lang. Process. 28 (2020)
Shoichiro Takeda, Kenta Niwa, Shinya Shimizu
Differentiable Max-Directivity Beamforming Normalization for Independent Vector Analysis. EUSIPCO (2020)
Kenta Niwa, Noboru Harada, Guoqiang Zhang, W. Bastiaan Kleijn
Edge-consensus Learning: Deep Learning on P2P Networks with Nonhomogeneous Data. KDD (2020)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
Rapidly Adapting Moment Estimation. CoRR (2019)
Kenta Niwa, Noboru Harada
Non-negative Matrix Factorization Using Bregman Monotone Operator Splitting. ICASSP (2019)
Guoqiang Zhang, Kenta Niwa, W. Bastiaan Kleijn
Approximated Orthonormal Normalisation in Training Neural Networks. CoRR (2019)
Yusuke Hioka, Kei Kobayashi, Kenta Niwa
Improving speech intelligibility using microphones on behind the ear hearing aids. MMSP (2019)
Kenta Niwa, Guoqiang Zhang, W. Bastiaan Kleijn
Fast Edge-consensus Computing Based on Bregman Monotone Operator Splitting. ICASSP (2019)
Ryotaro Sato, Kenta Niwa, Noboru Harada
Function Designable Beamformer Based on Probabilistic Assumptions on Filter and Its Auxiliary Variables. ICASSP (2019)
Kenta Niwa, Guoqiang Zhang, W. Bastiaan Kleijn
Edge Consensus Computing for Heterogeneous Data Sets. SSP (2018)
Kenta Niwa, Yusuke Hioka, Hisashi Uematsu
Efficient Audio Rendering Using Angular Region-Wise Source Enhancement for 360° Video. IEEE Trans. Multim. 20 (11) (2018)
Yuma Koizumi, Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi, Yoichi Haneda
DNN-Based Source Enhancement to Increase Objective Sound Quality Assessment Score. IEEE ACM Trans. Audio Speech Lang. Process. 26 (10) (2018)
Yuma Koizumi, Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi, Yoichi Haneda
DNN-based Source Enhancement to Increase Objective Sound Quality Assessment Score. CoRR (2018)
Kento Ohtani, Kenta Niwa, Kazuya Takeda
A Single-Dimensional Interface for Arranging Multiple Audio Sources in Three-Dimensional Space. IEICE Trans. Inf. Syst. (10) (2017)
Kenta Niwa, Yuma Koizumi, Tomoko Kawase, Kazunori Kobayashi, Yusuke Hioka
Supervised source enhancement composed of nonnegative auto-encoders and complementarity subtraction. ICASSP (2017)
Tomoko Kawase, Kenta Niwa, Masakiyo Fujimoto, Kazunori Kobayashi, Shoko Araki, Tomohiro Nakatani
Integration of Spatial Cue-Based Noise Reduction and Speech Model-Based Source Restoration for Real Time Speech Enhancement. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (5) (2017)
Yuma Koizumi, Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi, Hitoshi Ohmuro
Informative Acoustic Feature Selection to Maximize Mutual Information for Collecting Target Sources. IEEE ACM Trans. Audio Speech Lang. Process. 25 (4) (2017)
Yuma Koizumi, Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi, Yoichi Haneda
DNN-based source enhancement self-optimized by reinforcement learning using sound quality measurements. ICASSP (2017)
Manabu Tsukada, Keiko Ogawa, Masahiro Ikeda, Takuro Sone, Kenta Niwa, Shoichiro Saito, Takashi Kasuya, Hideki Sunahara, Hiroshi Esaki
Software Defined Media: Virtualization of Audio-Visual Services. CoRR (2017)
Kenta Niwa, Kento Ohtani, Kazuya Takeda
Music staging AI. ICASSP (2017)
Manabu Tsukada, Keiko Ogawa, Masahiro Ikeda, Takuro Sone, Kenta Niwa, Shoichiro Saito, Takashi Kasuya, Hideki Sunahara, Hiroshi Esaki
Software defined media: Virtualization of audio-visual services. ICC (2017)
Kenta Niwa, Tomoko Kawase, Kazunori Kobayashi, Yusuke Hioka
PSD estimation in beamspace using property of M-matrix. IWAENC (2016)
Tomoko Kawase, Kenta Niwa, Masakiyo Fujimoto, N. Kamado, Kazunori Kobayashi, Shoko Araki, Tomohiro Nakatani
Real-time integration of statistical model-based speech enhancement with unsupervised noise PSD estimation using microphone array. ICASSP (2016)
Kenta Niwa, Yuma Koizumi, Kazunori Kobayashi, Hisashi Uematsu
Binaural sound generation corresponding to omnidirectional video view using angular region-wise source enhancement. ICASSP (2016)
Yuma Koizumi, Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi, Hitoshi Ohmuro
Integrated approach of feature extraction and sound source enhancement based on maximization of mutual information. ICASSP (2016)
Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi
Optimal Microphone Array Observation for Clear Recording of Distant Sound Sources. IEEE ACM Trans. Audio Speech Lang. Process. 24 (10) (2016)
Kenta Niwa, Yuma Koizumi, Tomoko Kawase, Kazunori Kobayashi, Yusuke Hioka
Pinpoint extraction of distant sound source based on DNN mapping from multiple beamforming outputs to prior SNR. ICASSP (2016)
Yusuke Hioka, Kenta Niwa
Estimating direct-to-reverberant ratio mapped from power spectral density using deep neural network. ICASSP (2016)
Tomoko Kawase, Kenta Niwa, Kazunori Kobayashi, Yusuke Hioka
Application of neural network to source PSD estimation for wiener filter based array sound source enhancement. IWAENC (2016)
Yusuke Hioka, Kenta Niwa
PSD estimation in Beamspace for Estimating Direct-to-Reverberant Ratio from A Reverberant Speech Signal. CoRR (2015)
Daisuke Ochi, Kenta Niwa, Akio Kameda, Yutaka Kunita, Akira Kojima
Dive into Remote Events: Omnidirectional Video Streaming with Acoustic Immersion. ACM Multimedia (2015)
Kenta Niwa, Tatsuya Kako, Kazunori Kobayashi
Microphone array for increasing mutual information between sound sources and observation signals. ICASSP (2015)
Kenta Niwa, Takayoshi Yamada, Hidehiko Yamamoto, Haruhisa Kawasaki, Tetsuya Mouri
Optimization of grasp positions using the partial differentiation of the grasp stiffness matrix. SII (2015)
Tatsuya Kako, Kenta Niwa, Kazunori Kobayashi, Hitoshi Ohmuro
Wiener filter design by estimating sensitivities between distributed asynchronous microphones and sound sources. WASPAA (2015)
Yuma Koizumi, Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi, Hitoshi Ohmuro
Informative acoustic feature selection on microphone array wiener filtering for collecting target source on sports ground. WASPAA (2015)
Yoichi Haneda, Ken'ichi Furuya, Shoichi Koyama, Kenta Niwa
Close-talking spherical microphone array using sound pressure interpolation based on spherical harmonic expansion. ICASSP (2014)
Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi
Post-filter design for speech enhancement in various noisy environments. IWAENC (2014)
Yusuke Hioka, Kenta Niwa
PSD estimation in beamspace for source separation in a diffuse noise field. IWAENC (2014)
Kenta Niwa, Yusuke Hioka, Ken'ichi Furuya, Yoichi Haneda
Diffused Sensing for Sharp Directive Beamforming. IEEE Trans. Speech Audio Process. 21 (11) (2013)
Kenta Niwa, Yusuke Hioka, Sumitaka Sakauchi, Ken'ichi Furuya, Yoichi Haneda
An Estimation Method of Sound Source Orientation Using Eigenspace Variation of Spatial Correlation Matrix. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (9) (2013)
Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi
Wave intensity estimation over broad wavelengths based on diffused sensing. ICST (2013)
Yusuke Hioka, Ken'ichi Furuya, Kazunori Kobayashi, Kenta Niwa, Yoichi Haneda
Underdetermined Sound Source Separation Using Power Spectrum Density Estimated by Combination of Directivity Gain. IEEE Trans. Speech Audio Process. 21 (6) (2013)
Kenta Niwa, Yusuke Hioka, Kazunori Kobayashi, Ken'ichi Furuya, Yoichi Haneda
Evaluation of microphone array based on diffused sensing with various filter design methods. EUSIPCO (2013)
Kenta Niwa, Sumitaka Sakauchi, Ken'ichi Furuya, Manabu Okamoto, Yoichi Haneda
Diffused sensing for sharp directivity microphone array. ICASSP (2012)
Satoshi Esaki, Kenta Niwa, Takanori Nishino, Kazuya Takeda
Estimating sound source depth using a small-size array. ICASSP (2012)
Kenta Niwa, Sumitaka Sakauchi, Ken'ichi Furuya, Manabu Okamoto, Yoichi Haneda
Superdirective beamforming using microphone array and single reflector. ICCE (2012)
Kenta Niwa, Yusuke Hioka, Sumitaka Sakauchi, Ken'ichi Furuya, Yoichi Haneda
Telescopic microphone array using reflector for segregating target source from noises in same direction. ICASSP (2012)
Yusuke Hioka, Ken'ichi Furuya, Kenta Niwa, Yoichi Haneda
Estimation of Direct-to-Reverberation Energy Ratio Based On Isotropic and Homogeneous Propagation Model. IWAENC (2012)
Yusuke Hioka, Kenta Niwa, Sumitaka Sakauchi, Ken'ichi Furuya, Youichi Haneda
Estimating Direct-to-Reverberant Energy Ratio Using D/R Spatial Correlation Matrix Model. IEEE ACM Trans. Audio Speech Lang. Process. 19 (8) (2011)
Kenta Niwa, Yusuke Hioka, Sumitaka Sakauchi, Ken'ichi Furuya, Youichi Haneda
Estimation of sound source orientation using eigenspace of spatial correlation matrix. ICASSP (2010)
Yusuke Hioka, Kenta Niwa, Sumitaka Sakauchi, Ken'ichi Furuya, Youichi Haneda
Estimating direct-to-reverberant energy ratio based on spatial correlation model segregating direct sound and reverberation. ICASSP (2010)
Kenta Niwa, Takanori Nishino, Kazuya Takeda
Selective Listening Point Audio Based on Blind Signal Separation and Stereophonic Technology. IEICE Trans. Inf. Syst. (3) (2009)
Kenta Niwa, Takanori Nishino, Kazuya Takeda
Encoding large array signals into a 3D sound field representation for selective listening point audio based on blind source separation. ICASSP (2008)
Mehrdad Panahpour Tehrani, Kenta Niwa, Norishige Fukushima, Yasushi Hirano, Toshiaki Fujii, Masayuki Tanimoto, Kazuya Takeda, Kenji Mase, Akio Ishikawa, Shigeyuki Sakazawa, Atsushi Koike
3DAV integrated system featuring arbitrary listening-point and viewpoint generation. MMSP (2008)