Faculty Information - Nakayama Masashi |

Nakayama Masashi

Department / Course

Hiroshima City University Graduate School Graduate School of Information Sciences Major in Systems Engineering

Hiroshima City University Faculty of Information Sciences Department of Systems Engineering

Job Associate Professor

Academic conference presentation
2025/02	Acoustic Feature Analysis of Diagnoses of Heart Failure Using LLD (2025 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'25))
2025/02	Duration Controlled Non-negative Matrix Factorization for Monosyllables on Diagnosis of Heart Failure (2025 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'25))
2025/02	Detection of Heart Failure with Voice Biomarkers Utilizing Deep Metric Learning (2025 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'25))
2025/02	Acoustic Feature Analysis of Diagnoses of Heart Failure Using MFCC (2025 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'25))
2025/02	Fundamental Study on a Heart Failure Diagnosis Evaluation System with MFCC Using Multilayer Perceptron (2025 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'25))
2024/09	Fundamental Study of the Number of Bases Estimation in Nonnegative Matrix Factorization (18th International Conference on Innovative Computing, and Information and Control (ICICIC2024))
2023/11	Initialization for Cepstral-basis-decomposed Nonnegative Matrix Factorization by Gaussian Mixture Distribution (17th International Conference on Innovative Computing, and Information and Control (ICICIC2023))
2022/09	Analysis for Skin Propagation Speech with Three Dimensional Dsplacemanet Measurment (16th International Conference on Innovative Computing, Information and Control (ICICIC2022))
2022/03	Detection of Adenoid Hypertrophy and Nasal Obstruction Using Mel-Filter Bank (5th International Symposium on Information and Knowledge Management (ISIKIM2022))
2021/07	Frequency characteristics of skin-propagation speech measuring with three dimensional displacement measurement (27th International Congres on Sound and Vibration (ICSV27))
2020/12	Improvement of speech recognition performance using model estimation for hearing-impaired speech (4th International Symposium on Information and Knowledge Management (ISIKM2020))
2020/12	Study on disease-detection methods using body-conducted sounds in pigs (4th International Symposium on Information and Knowledge Management (ISIKM2020))
2019/07	Frequency Characteristics of Skin Propagation (27th International Congress on Sound and Vibration（Online）)
2019/07	Study on skin propagation of speech using three dimensional displacement measurement (26th International Congress on Sound and Vibration)
2018/08	Effects of Gaze Angle on Vocalization (The 13th International Conference on Innovative Computing, Information and Control)
2018/08	An Early Detection System to Find Respiratory Diseases for Pigs with Body-Conducted Sound (The 13th International Conference on Innovative Computing, Information and Control (ICICIC2018))
2018/07	FUNDAMENTAL RESEARCH OF AN EARLY DETECTIVE RESPIRATORY SYSTEM FOR FINDING PIG DISEASE (The 25th International Congress on Sound Vibration)
2018/07	DEVELOPMENT OF A RESPIRATORY DISEASE DETECTION SYSTEM FOR LIVESTOCK USING BODY-CONDUCTED SOUND (The 25th International Congress on Sound Vibration)
2018/07	STUDY OF PHARYNGEAL TONSIL HYPERTROPHY DETECTION BY USING PHONETIC SOUND (The 25th International Congress on Sound Vibration)
2018/03	Fundamental research for an early detection system to find respiratory diseases in pigs (2018 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing)
2017/08	Influence of the Lombard Effect, Fletcher Effect and Band-Emphasized Auditory Feedback on Singing Voice (12th International Conference on Innovative Computing, Information and Control,)
2017/07	FUNDAMENTAL RESEARCH OF SPEECH DISCRIMINATION FOR TONGUE THRUST ARTICULATION USING ZERO-CROSSING AND MEL-FREQUENCY CEPSTRUM COEFFICIENTS (The 24nd International Congress on Sound and Vibration (ICSV24))
2017/07	Effects of auditory feedback on singing (The 24nd International Congress on Sound and Vibration (ICSV24))
2016/08	Frame-by-Frame Speech Signal Processing for FPGA Devices (11th International Conference on Innovative Computing, Information and Control)
2016/07	INVESTIGATION OF QUANTIZATION SIZE FOR SOUND QUALITY IMPROVEMENT ON BODY-CONDUCTED SPEECH USING THE DIFFERENCE CALCULATION (The 23nd International Congress on Sound and Vibration (ICSV23))
2015/12	Frame-by-frame speech recognition as hardware decoding on FPGA devices (The 9th International Conference on Sensing Technology (ICST 2015))
2015/08	Living Support System Consisting of IC Card Interface and Embedded System (The Tenth International Conference on Innovative Computing, Information and Control (ICICIC2015))
2015/08	Effects of High-Pass Filtered and Pitch-Shifted Auditory Feedback on a Shinger's Pitch (The Tenth International Conference on Innovative Computing, Information and Control (ICICIC2015))
2015/07	IMPROVEMENT OF BODY‐CONDUCTED SPEECH SOUND QUALITY USING THE ACCELERATION DIFFERENCE ‐ EVALUATION BY A WORD INTELLIGIBILITY TEST (The 22nd International Congress on Sound and Vibration (ICSV22))
2015/07	STUDY ON SOUND QUALITY EVALUATION USING HEART RATE VARIABILITY ANALYSIS (The 22nd International Congress on Sound and Vibration (ICSV22))
2015/07	EFFECTS OF AUDITORY FEEDBACK ON A SINGER’S　PITCH (The 22nd International Congress on Sound and Vibration (ICSV22))
2014/11	Improvement of body-conducted speech recognition using modelestimation (43rd International Congress on Noise Control Engineering (Inter-noise2014))
2013/07	Formant frequencies of sung vowels intonated by six traditional Japanese Shigin singers. Part I: Dataset construction and analysis method (SMAC Stockholm Music Acoustics Conference 2013 (SMAC13))
2013/07	Formant frequencies of sung vowels intonated by six traditional Japanese Shigin singers. Part II: Results of analysis and statistical investigations (SMAC Stockholm Music Acoustics Conference 2013 (SMAC13))
2013/05	Extension of the living support system using IC card and Ethernet for informing the status of devices and disaster prevention systems (The 12th Joint Seminar on Geo-Environmental Engineering 2013)
2013/03	Extracting the fundamental frequency of steady-state portions of traditional Japanese singing Shigin (2013 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing)
2012/10	The living support system using IC card interface with disaster prevention system (The 1st IEEE Global Conference on Consumer Electronics 2012(IEEE GCCE2012))
2012/08	Design and practice of an acoustic education program to increase vocational awareness (IEEE International Conference on Teaching, Assessment and Learning for Engineering 2012 (IEEE TALE2012))
2012/07	Sound quality improvement for the body-conducted speech of a sentence unit using differential acceleration (2012 ICME International Conference on Complex Medical Engineering (ICME CME 2012))
2012/05	The Living Support System Using IC Card and Embedded Technology for Improvement of Daily Life with Disaster Preventions (The 11th Joint Seminar on Geo-Environmental Engineering 2012)
2012/03	An IC Card Interface Using Embedded Technology with Universal Remote Controller for Living Support System (The 16th IEEE Mediterranean Electrotechnical Conference (IEEE MELECON))
2012/03	Fundamental research on a singing training support system for Shigin: Japanese traditional singing (IEEE SoutheastCon 2012)
2011/09	Improvement for program of creative sensor systems using embedded technology (The 5th International Symposium on Advances in Technology Education (ISATE2011))
2011/09	Fundamental research on a body-conducted speech microphone using an Optical Fiber Bragg Grating for high magnetic field and noisy environments (Inter-noise 2011)
2011/08	The IC card interface using embedded technology for the living support system (The 54th International Midwest Symposium on Circuits and Systems (IEEE MWSCAS 2011))
2011/07	Body-conducted speech microphone using an Optical Fiber Bragg Grating for high magnetic field and noisy environments (Forum Acusticum 2011)
2010/09	Education for creative sensor system using embedded technology (The 4th International Symposium on Advances in Technology Education (ISATE2010))
2010/07	Education for embedded technology for college of technology students (The international symposium on Innovative Technology towards Sustainable Society (ITSS2010))
2009/12	Body-conducted speech recognition in speech support system for disorders (Fourth International Conference on Innovative Computing, Information and Control (ICICIC2009))
2009/08	Speech estimation using body-conducted speech microphone in noisy environment (Inter-noise2009)
2009/03	Speech Estimation from Body-conducted Speech with Differential Acceleration (The 2009 IEEE International Conference on Networking, Sensing and Control (IEEE ICNSC'09))
2008/07	Speech recognition with body-conducted speech using differential acceleration (Acoustics'08 Paris)
2008/06	Construction of Speech Support System Using Body-Conducted Speech Recognition for Disorders (The Third International Conference on Innovative Computing, Information and Control (ICICIC2008))
2007/09	Construction of the Noise-Robust Body-Conducted Speech Recognition System (The Second International Conference on Innovative Computing, Information and Control (ICICIC2007))
2007/05	NOISE-ROBUST RECOGNITION SYSTEM MAKING USE OF BODY-CONDUCTED SPEECH MICROPHONE (AES 122nd Convention)
2025/03	Voice biomarker for diagnosis of heart failure: Voice-BNP
2025/03	Fundamental study of blind source separation for leak sound in air-controlled equipment for Tokaido Shinkansen
2025/03	Acoustic feature analysis of occlusal conditions due to differences in maxillofacial morphology using speech separation
2024/09	The future opening for body/bone-conducted speech using blind speech processing
2024/09	Investigation of recognition accuracy for training data in speaker identification using deep metric learning.
2024/09	Singer’s Formant on Traditional Shigin Singing
2024/09	A study on acoustic feature differences in vertical occlusal conditions for different maxillofacial geometries.
2024/09	Speech separation by Cepstral-Basis-Decomposed Independent Low-Rank Matrix Analysis using dynamic lifter.
2024/03	Active Sound Automatic Coffee Roasting System-Acoustic analysis and sound source separation of coffee roasting sounds-
2023/09	Basic study of visualization for acoustic variation based on nonnegative matrix factorization.
2023/09	Improvement on sound quality of optical-body-conducted speech using U-Net.
2022/12	Improvement on sound quality of optical-body-conducted speech using convolutional neural network
2022/09	Independent low-rank matrix analysis introduced convlolutive source model.
2022/03	Fundamental research for detection of Adenoid hypertrophy using Mel-filter bank
2021/09	Basic study on basis-decomposed nonnegative matrix factorization for nonstationary source.
2020/03	Study on bio-information extraction from body-conducted sound in pig ear tags
2018/11	A FUNDAMENTAL RESEARCH ON AN EARLY DETECTIVE SYSTEM FOR FINDING PIG DISEASE BY BODY-CONDUCTED SOUND (第20回IEEE広島支部学生シンポジウム)
2016/11	COMPARISONS OF CONTEXT-DEPENDENT SUB-WORD TRANSFER FUNCTIONS FOR THE SPEECH SUPPORT SYSTEM (第18回IEEE広島支部学生シンポジウム)