Hands-free speech recognition and communication on PDAS using microphone array technology

被引：0
|
作者：
Herbordt, W [1 ]
Horiuchi, T [1 ]
Fujimoto, M [1 ]
Jitsuhiro, T [1 ]
Nakamura, S [1 ]
机构：
[1] ATR, Spoken Language Commun Res Labs, Kyoto 6190288, Japan
来源：
2005 IEEE WORKSHOP ON AUTOMATIC SPEECH RECOGNITION AND UNDERSTANDING (ASRU) | 2005年
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
In this paper, a personal digital assistant (PDA) for handsfree speech recognition and communication with a microphone array mounted on the PDA is presented. An outlier-robust generalized sidelobe canceller (RGSC) and a minimum mean-squared error (MMSE) estimator for log Mel-spectral energy coefficients using a Gaussian mixture model (GMM) for clean speech are implemented in real-time and evaluated for speech recognition based on a small experimental multichannel database. It is shown that the joint system of beamformer and single-channel noise suppression highly improves the noise-robustness of a large-vocabulary speech recognizer so that down to SNR= 5 dB more than 91 % word accuracy is obtained.
引用
收藏
页码：302 / 307
页数：6
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