Faculty Database - MURAKAMI Takahiro

■ Books and Papers

1.	2021/12	Article	Learning the statistical model of the NMF using the deep multiplicative update algorithm with applications Proc. APSIPA ASC 2021 pp.205-211 (Collaboration)
2.	2020/05	Article	An analytical solution to Jacobsen estimator for windowed signals Proc. ICASSP 2020 pp.5950-5954 (Collaboration)
3.	2019/11	Article	A generalization of Laplace nonnegative matrix factorization and its multichannel extension Proc. APSIPA ASC 2019 pp.1694-1699 (Collaboration)
4.	2019/09	Article	Laplace nonnegative matrix factorization with application to semi-supervised audio denoising Proc. EUSIPCO 2019 (Collaboration)
5.	2019/05	Article	A nonparametric Bayesian model for system identification based on a super-Gaussian distribution Electronics and Communications in Japan 102(7),pp.32-40 (Collaboration)
6.	2018/11	Article	Blind system identification for acoustic impulse responses based on maximum likelihood estimation Proc. ISPACS 2018 pp.189-194 (Collaboration)
7.	2018/11	Article	Robust FIR system identification for super-Gaussian noise based on hyperbolic secant Distribution Proc. ISPACS 2018 pp.195-199 (Collaboration)
8.	2017/12	Article	Array shape calibration using near field pilot sources with unknown distance Proc. APSIPA ASC 2017 pp.TA-P3.4 (Collaboration)
9.	2017/08	Article	Time-scale and pitch-scale modification by the phase vocoder without occurring the phase unwrapping problem Proc. DSP 2017 pp.1-5 (Collaboration)
10.	2016/09	Article	FIR system identification based on a nonparametric Bayesian model using the Indian buffet process Signal, Image and Video Processing 10(6),pp.1105-1112 (Collaboration)
11.	2016/07	Article	A linear programming-based approach to I-PD controller design for a multi-input-multi-output system Proc. CCC2016 pp.284-291 (Collaboration)
12.	2016/03	Article	Nonparametric Bayesian models for AR and ARX identification Proc. CSPA 2016 pp.94-99 (Collaboration)
13.	2016/01	Article	Generalized sliding discrete Fourier transform IEICE Trans. Fundamentals E99-A(1),pp.338-345 (Collaboration)
14.	2015/12	Article	Model matching control based on discrete-time improved ADRC considering plant input-side disturbance Proc. AIMS2015 pp.202-207 (Collaboration)
15.	2015/09	Article	Minimum length of a signal for fundamental frequency estimation and its application IEICE Trans. Fundamentals E98-A(9),pp.1914-1923 (Collaboration)
16.	2014/11	Article	Derivation of update rules for convolutive NMF based on squared Euclidean distance, KL divergence, and IS divergence IEICE Trans. Fundamentals E97-A(11),pp.2121-2129 (Collaboration)
17.	2014/10	Article	Estimation of an impulse response using kurtosis Proc. AsiaSim 2014 pp.26-34 (Collaboration)
18.	2013/11	Article	Controller design approach based on linear programming ISA Transactions 52(6),pp.744-751 (Collaboration)
19.	2013/10	Article	Convolutive NMF based on squared Euclidean distance, KL divergence, and IS divergence Proc. SISA2013 pp.67-72 (Collaboration)
20.	2011/07	Article	An approach to multi-pitch estimation using a support vector machine International Journal of Computers and Applications 33(3) (Collaboration)
21.	2011/07	Article	Sinusoidal parameter estimation using roots of an algebraic equation IEICE Trans. Fundamentals E94-A(7),pp.1487-1496 (Collaboration)
22.	2009/03	Article	Measurement of similarity between latent variables IEICE Trans. Fundamentals E92-A(3),pp.824-831 (Collaboration)
23.	2009/03	Article	Time-domain blind signal separation of convolutive mixtures via multidimensional independent component analysis IEICE Trans. Fundamentals E92-A(3),pp.733-744 (Collaboration)
24.	2008/12	Article	Pitch shifting of music based on adaptive order estimation of linear predictor Proc. PCM2008 pp.40-49 (Collaboration)
25.	2006/09	Article	A fast algorithm for ICA deduced from a closed-form solution of kurtosis maximization Proc. MLSP2006 pp.223-228 (Collaboration)
26.	2006/09	Article	Adaptive filtering for attenuating musical noise caused by spectral subtraction Proc. Interspeech2006-ICSLP pp.1443-1446 (Collaboration)
27.	2005/09	Article	Directionally constrained minimization of power algorithm for speech signals Proc. Interspeech2005-Eurospeech pp.2333-2336 (Collaboration)
28.	2005/05	Article	Stereophonic noise reduction using a combined sliding subspace projection and adaptive signal enhancement IEEE Trans. Speech and Audio Processing 13(3),pp.309-320 (Collaboration)
29.	2005/03	Article	Speech enhancement by spectral subtraction based on subspace decomposition IEICE Trans. Fundamentals E88-A(3),pp.690-701 (Collaboration)
30.	2004/11	Article	Blind speech extraction using subband independent component analysis with scale adjustment function and neural memory Proc. TENCON2004 pp.665-668 (Collaboration)
31.	2004/11	Article	Spoken digits recognition by subspace decomposition method Proc. TENCON2004 pp.72-75 (Collaboration)
32.	2004/08	Article	Stereophonic noise reduction by a combined non-recursive multi-stage sliding subspace projection and adaptive signal enhancement Proc. ALCOSP-2004 pp.421-426 (Collaboration)
33.	2003/04	Article	A combined cascading subspace and adaptive signal enhancement method for stereophonic noise reduction Proc. ICA2003 pp.573-578 (Collaboration)
34.	2002/10	Article	Recovery of broadband speech from narrowband speech by radial basis function neural networks Proc. TENCON2002 pp.469-472 (Collaboration)
35.	2002/10	Article	Speech enhancement base on a combined higher frequency regeneration technique and RBF networks Proc. TENCON2002 pp.457-460 (Collaboration)
36.	2002/09	Article	Pitch extraction of speech signals using an eigen-based subspace method Proc. ICSLP2002 pp.1729-1732 (Collaboration)
37.	2002/09	Article	Transformation of spectral envelope for voice conversion based on radial basis function networks Proc. ICSLP2002 pp.285-288 (Collaboration)
38.	2001/07	Article	Fundamental frequency estimation of speech signals using MUSIC algorithm Journal of the Acoustical Society of Japan (E) 22(4),pp.293-297 (Collaboration)
39.	2001/07	Article	Speech enhancement using MUSIC algorithm Proc. SPPRA2001 pp.213-216 (Collaboration)
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■ Conference Presentations

1.	2017/03/03	An approach to a model following sliding mode controller design based on a Takagi-Sugeno fuzzy model (NCSP'17)
2.	2016/11/29	The largest Cramer-Rao Lower Bound for variance estimation of acoustic signals (5th ASA/ASJ)
3.	2016/03/07	Polyphonic music transcription using supervised nonnegative matrix factorization combined with musical key estimation (NCSP'16)
4.	2014/10/29	Improvement of the histogram in the DUET algorithm (168th ASA)
5.	2014/10/29	Start point estimation of a signal in a frame (168th ASA)
6.	2003/11	A speech enhancement method using the sliding DFT (146th ASA)
7.	2003/11	Musical noise reduction using an adaptive filter (146th ASA)
8.	2003/11	Spoken digits recognition using DP matching combined with a subspace decomposition method (146th ASA)
9.	2003/11	Target sound source extraction using spectral subtraction with a two-channel microphone array (146th ASA)
10.	2003/11	Voice conversion using the radial basis function network and the frequency-domain pitch modification technique (146th ASA)
11.	2001/09	Noise reduction of speech signals using MUSIC algorithm (17th ICA)
12.	2001/09	Pitch estimation of speech signals using MUSIC algorithm (17th ICA)
13.	2000/12	Pitch determination by fundamental-harmonic extraction using MUSIC algorithm (140th ASA)
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■ Academic Qualifications

1.	2002/04～2005/03	〔Doctorial Course〕 Electrical Engineering Program, Graduate School of Science and Technology, Meiji University, Completed, Doctor of Engineering
2.	2000/04～2002/03	〔Master Course〕 Electrical Engineering Program, Graduate School of Science and Technology, Meiji University, Completed, Master of Engineering
3.	1996/04～2000/03	Department of Electronics and Communication Engineering, School of Science and Technology, Meiji University, Graduated,

■ Career History

1.	2012/04～	Meiji University School of Science and Technology Assistant Professor
2.	2009/04～2012/03	Tokyo Metropolitan College of Industrial Technology Assistant Professor at the Department of Monozukuri Engineering
3.	2006/04～2009/03	JSPS Research Fellow
4.	2005/04～2006/03	Meiji University Research Assistant at the School of Science and Technology

■ Academic Associations Membership

1.

2000/04～

Institute of Electronics, Information and Communication Engineers (IEICE)

■ Research Topics, Consignment Studies & KAKENHI Researches

1.		Pitch estimation for automatic music transcription (Key Word : pitch estimation, fundamental frequency estimation, automatic music transcription)
2.		Signal separation for a super directional microphone array (Key Word : signal separation, super directivity, microphone array)
3.		System identification for measurement of an acoustic impulse response (Key Word : acoustic impulse response, system identification)
4.		Time-scale/pitch-scale modification for the elderly (Key Word : time scale modification, pithc scale modification, hearing aid)

■ Email Addresses

■ Award History

1.	2016/03	CSPA 2016 CSPA 2016 Best Paper Award (Nonparametric Bayesian models for AR and ARX identification)
2.	2015/12	AIMS 2015 AIMS 2015 Best Paper Award (Model matching control based on discrete-time improved ADRC considering plant input-side disturbance)
3.	2014/10	ISA ISA Transactions Best Paper Award (Controller design approach based on linear programming)
4.	2013/09	SISA 2013 SISA 2013 Best Paper Award (Convolutive NMF based on squared Euclidean distance, KL divergence, and IS divergence)

■ Current Specialized Field

Rehabilitation science