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Browsing 国際会議発表論文 / Proceedings by Title

Now showing items 436-455 of 823

Manipulating Speech Pitch Periods According to Optimal Insertion/Deletion Position in Residual Signal for Intonation Control in Speech Synthesis

Toshio Hirai; Seiichi Tenpaku; Kiyohiro Shikano (2000-10)

This paper describes the investigation of manipulating positions in a speech pitch when lengthening or shortening the pitch period, that is, lowering or raising fundamental frequency of speech. The experimental results ...
Many-to-Many Eigenvoice Conversion with Reference Voice

Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (2009-09)

In this paper, we propose many-to-many voice conversion (VC) techniques to convert an arbitrary source speaker's voice into an arbitrary target speaker's voice. We have proposed one-to-many eigenvoice conversion (EVC) and ...
Maximizing Lifetime of Wireless Sensor Networks with Mobile Sensor Nodes

Katsuma, Ryo; Murata, Yoshihiro; Shibata, Naoki; Yasumoto, Keiichi; Ito, Minoru (IEEE, 2008)

In this paper, we propose a new method utilizing mobile sensor nodes to prolong WSN lifetime while maintaining a large sensing area. We formulate this problem as a problem in finding the best positions for mobile sensor ...
Maximum A Posteriori Adaptation for Many-to-One Eigenvoice Conversion

Daisuke Tani; Tomoki Toda; Yamato Ohtani; Hiroshi Saruwatari; Kiyohiro Shikano (2008-09)

Many-to-one eigenvoice conversion (EVC) allows the conversion from an arbitrary speaker's voice into the pre-determined target speaker's voice. In this method, a canonical eigenvoice Gaussian mixture model is effectively ...
Maximum Likelihood Successive State Splitting Algorithm for Tied-Mixture HMNET

Alexandre Girardi; Harald Singer; Kiyohiro Shikano; Satoshi Nakamura (1997-09)

This paper describes a new approach to ML-SSS (Maximum Likelihood Successive State Splitting) algorithm that uses tied- mixture representation of the output probability density function instead of a single Gaussian during ...
Maximum Likelihood Voice Conversion Based on GMM with STRAIGHT Mixed Excitation

Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (2006-09)

The performance of voice conversion has been considerably improved through statistical modeling of spectral sequences. However, the converted speech still contains traces of artificial sounds. To alleviate this, it is ...
Memory block based scan-BIST architecture for application-dependent FPGA testing

Ito, Keita; Yoneda, Tomokazu; Yamato, Yuta; Hatayama, Kazumi; Inoue, Michiko (ACM, 2014)

This paper presents a scan-based BIST architecture for FPGAs used as application-specific embedded devices for low-volume products. The proposed architecture efficiently utilizes memory blocks, instead of logic elements, ...
A Method for Improving Data Delivery Efficiency in Delay Tolerant VANET with Scheduled Routes of Cars

Nakamura, Masato; Kitani, Tomoya; Sun, Weihua; Shibata, Naoki; Yasumoto, Keiichi; Ito, Minoru (IEEE, 2010)

In vehicular ad hoc networks (VANETs), delivering messages to a specific location is difficult due to the high mobility of vehicles. In this paper, we propose a method for efficient message delivery in VANETs utilizing the ...
A Method for Overlay Network Latency Estimation from Previous Observation

Sun, Weihua; Shibata, Naoki; Yasumoto, Keiichi; Mori, Masaaki (IARIA, 2013)

Estimation of the qualities of overlay links is useful for optimizing overlay networks on the Internet. Existing estimation methods requires sending large quantities of probe packets between two nodes, and the software for ...
A Method for Pedestrian Position Estimation using Inter-Vehicle Communication

Sawa, Yuta; Kitani, Tomoya; Shibata, Naoki; Yasumoto, Keiichi; Ito, Minoru (IEEE, 2008)

In this paper, we propose a method for detecting the positions of pedestrians by cooperation of multiple cars with directional antennas to support drivers for pedestrian safety. In the method, each pedestrian carries a ...
A Method for Sharing Traffic Jam Information using Inter-Vehicle Communication

Shibata, Naoki; Terauchi, Takashi; Kitani, Tomoya; Yasumoto, Keiichi; Ito, Minoru; Higashino, Teruo (IEEE, 2006)

In this paper, we propose a method for cars to autonomously and cooperatively collect traffic jam statistics to estimate arrival time to destination for each car using inter-vehicle communication. In the method, the target ...
A method of designing inverse system for multi-channel sound reproduction-system using least-norm-solution

Atsunobu Kaminuma; Shiro Ise; Kiyohiro Shikano (Inst of Noise Control Engineer, 1999-12)
A Method to Plan Group Tours with Joining and Forking

Nagata, Munenobu; Murata, Yoshihiro; Shibata, Naoki; Yasumoto, Keiichi; Ito, Minoru (Springer, 2006)

Group sightseeing has some advantages in terms of required budget and so on. Some travel agents provide package tours of group sightseeing, but participants have to follow a predetermined schedule in tour, and thus there ...
Methods of fitting a nonaudible murmur microphone for daily use and development of urethane elastmer duplex structure type nonaudible murmur microphone

Yoshitaka Nakajima; Kiyohiro Shikano (2006-11)
Microphone Array Design Measures for Hands-Free Speech Recognition

Masaaki Inoue; Satoshi Nakamura; Takeshi Yamada; Kiyohiro Shikano (1997-09)

One of the key technologies for natural man-machine interface is hands-free speech recognition. The performance of hands-free distant- talking speech recognition will be seriously degraded by noise and reverberation in ...
A Microphone Array-Based 3-D N-Best Search Algorithm for the Simultaneous Recognition of Multiple Sound Sources in Real Environments

Panikos Heracleous; Satoshi Nakamura; Kiyohiro Shikano (IEEE, 2001-05)

Deals with the recognition of distant talking speech and, particularly, with the simultaneous recognition of multiple sound sources. A problem that must be solved in the recognition of distant talking speech is talker ...
Mining Source Code Improvement Patterns from Similar Code Review Works

Ueda, Yuki; Ishio, Takashi; Ihara, Akinori; Matsumoto, Kenichi (IEEE, 2019)

Code review is key to ensuring the absence of potential issues in source code. Code reviewers spend a large amount of time to manually check submitted patches based on their knowledge. Since a number of patches sometimes ...
A mixed reality telepresence system with limited DOF motion base and immersive display

Hori, Maiya; Kanbara, Masayuki; Yokoya, Naokazu (ACM, 2009)

This paper describes a mixed reality (MR) telepresence system for a ride to provide users with a highly realistic sensation. To make a realistic scene in a virtual environment, it is necessary to combine visual information ...
MLSP 2007 Data Analysis Competition: Two-Stage Blind Source Separation Combining SIMO-Model-Based ICA and Binary Masking

Yoshimitsu Mori; Keiichi Osako; Shigeki Miyabe; Yu Takahashi; Hiroshi Saruwatari; Kiyohiro Shikano (IEEE, 2007-08)

This paper reviews a real-time two-stage blind source separation (BSS) method for convolutive mixtures of speech, in which a single-input multiple-output (SIMO)-model-based independent component analysis (ICA) and a ...
MMSE STSA estimator with nonstationary noise estimation based on ICA for high-quality speech enhancement

Ryoi Okamoto; Yu Takahashi; Hiroshi Saruwatari; Kiyohiro Shikano (IEEE, 2010-03)

In this paper, we propose a new blind speech extraction method consisting of a minimum mean-square error short-time spectral amplitude (MMSE STSA) estimator and noise estimation based on independent component analysis ...

Now showing items 436-455 of 823

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