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

页码：302 / 307

页数：6

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