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Kazumasa Yamamoto 的论文(48) 排序方式:
AURORA-2J: An Evaluation Framework for Japanese Noisy Speech Recognition  
Satoshi Nakamura , Kazuya Takeda , Kazumasa Yamamoto , Takeshi Yamada , Shingo Kuroiwa , Norihide Kitaoka , Takanobu Nishiura , Akira Sasou , Mitsunori Mizumachi , Chiyomi Miyajima , Masakiyo Fujimoto , Toshiki Endo
Ieice Transactions  2005
12次引用 0 0
DATA COLLECTION AND EVALUATION OF AURORA-2 JAPANESE CORPUS  
Satoshi Nakamura , Kazumasa Yamamoto , Kazuya Takeda , Shingo Kuroiwa , Norihide Kitaoka , Takeshi Yamada , Mitsunori Mizumachi , Takanobu Nishiura , Masakiyo Fujimoto , Akira Saso , Toshiki Endo
Speech recognition systems must still be improved when they are exposed to noisy environments. For this improvement, develop- ments of the standard evaluation corpus and assessment technolo- gies are ......
 2003
5次引用 0 0
Integration of noise reduction algorithms for Aurora2 task  
Takeshi Yamada , Jiro Okada , Kazuya Takeda , Norihide Kitaoka , Masakiyo Fujimoto , Shingo Kuroiwa , Kazumasa Yamamoto , Takanobu Nishiura , Mitsunori Mizumachi , Satoshi Nakamura
Abstract To achieve high recognition performance,for a wide variety of noise and for a wide range of signal-to-noise ratios, this pa- per presents the integration of four noise reduction algorithms: s......
 2003
4次引用 0 0
Automatic speech recognition using Hidden Conditional Neural Fields  
Yasuhisa Fujii , Kazumasa Yamamoto , Seiichi Nakagawa
Hidden Conditional Random Fields(HCRF) is a very promising approach to model speech. However, because HCRF computes the score of a hypothesis by summing up linearly weighted features, it cannot consid......
International Conference on Acoustics, Speech, and Signal Processing  2011
3次引用 0 0
DIRECTIONAL ACOUSTIC SOURCE'S POSITION AND ORIENTATION ESTIMATION APPROACH BY A MICROPHONE ARRAY NETWORK  
Alberto Yoshihiro Nakano , Kazumasa Yamamoto , Seiichi Nakagawa
In this paper we present a directional acoustic source's position and orientation estimation approach by a microphone array network in an enclose environment. In this work we assumed that at least one......
 2009
2次引用 0 0
Mel-LSP Parameterization for HMM-based Speech Synthesis  
Naotoshi Nakatani , Kazumasa Yamamoto , Hiroshi Matsumoto
In HMM-based speech synthesis using mel-cepstral parameters, it has been observed that formant peaks tend to be flattened in the synthetic speech. To alleviate this problem this paper in- vestigates M......
 2006
2次引用 0 0
Auditory perception of speaker's position, distance and fac- ing angle in a real enclosed environment  
Alberto Yoshihiro Nakano , Kazumasa Yamamoto , Seiichi Nakagawa
In this work we investigate the auditory percep- tion of the position, distance and facing angle of a directional acoustic source in a real enclosed envi- ronment by blindfolded listeners. A human spe......
 2008
2次引用 0 0
Privacy Protection for Speech Information  
Kazumasa Yamamoto , Seiichi Nakagawa
Ubiquitous network society will be achieved soon. In the society, all electronic equipments including "sensors" are connected to the network and communicate each other to share information. Sensor inf......
Intelligent Autonomous Systems  2009
2次引用 0 0
DEVELOPMENT OF VAD EVALUATION FRAMEWORK CENSREC-1-C AND INVESTIGATION OF RELATIONSHIP BETWEEN VAD AND SPEECH RECOGNITION PERFORMANCE  
Norihide Kitaoka , Kazumasa Yamamoto , Tomohiro Kusamizu , Seiichi Nakagawa , Takeshi Yamada , Satoru Tsuge , Chiyomi Miyajima , Takanobu Nishiura , Masato Nakayama , Yuki Denda , Masakiyo Fujimoto , Tetsuya Takiguchi
ABSTRACT Voice activity detection (VAD) plays an important role in speech processing including speech recognition, speech enhancement, and speech coding in noisy environments. We developed an evaluati......
1次引用 0 0
Acoustic source's position and orientation estimation by a microphone array network  
Alberto Yoshihiro Nakano , Kazumasa Yamamoto , Seiichi Nakagawa
In this work, a microphone array network is em- ployed to investigate the position and orientation of an acoustic source in an enclosed environment. For each array, the source's position and energy re......
 2008
1次引用 0 0

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