Search Results for author: Rintaro Ikeshita

Found 11 papers, 0 papers with code

How does end-to-end speech recognition training impact speech enhancement artifacts?

no code implementations20 Nov 2023 Kazuma Iwamoto, Tsubasa Ochiai, Marc Delcroix, Rintaro Ikeshita, Hiroshi Sato, Shoko Araki, Shigeru Katagiri

Jointly training a speech enhancement (SE) front-end and an automatic speech recognition (ASR) back-end has been investigated as a way to mitigate the influence of \emph{processing distortion} generated by single-channel SE on ASR.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +2

ISS2: An Extension of Iterative Source Steering Algorithm for Majorization-Minimization-Based Independent Vector Analysis

no code implementations2 Feb 2022 Rintaro Ikeshita, Tomohiro Nakatani

Although the time complexity per iteration of ISS is $m$ times smaller than that of IP, the conventional ISS converges slower than the current fastest IP (called $\text{IP}_2$) that updates two rows of $W$ in each iteration.

Independent Vector Extraction for Fast Joint Blind Source Separation and Dereverberation

no code implementations9 Feb 2021 Rintaro Ikeshita, Tomohiro Nakatani

We address a blind source separation (BSS) problem in a noisy reverberant environment in which the number of microphones $M$ is greater than the number of sources of interest, and the other noise components can be approximated as stationary and Gaussian distributed.

blind source separation

Neural Network-based Virtual Microphone Estimator

no code implementations12 Jan 2021 Tsubasa Ochiai, Marc Delcroix, Tomohiro Nakatani, Rintaro Ikeshita, Keisuke Kinoshita, Shoko Araki

Developing microphone array technologies for a small number of microphones is important due to the constraints of many devices.

Speech Enhancement

Block Coordinate Descent Algorithms for Auxiliary-Function-Based Independent Vector Extraction

no code implementations18 Oct 2020 Rintaro Ikeshita, Tomohiro Nakatani, Shoko Araki

We also newly develop a BCD for a semiblind IVE in which the transfer functions for several super-Gaussian sources are given a priori.

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