Human-Centric Interfaces for Ambient Intelligence

CHAPTER 6 Robust Speech Recognition Under Noisy Ambient Conditions

Kuldip K. Paliwal

School of Microelectronic Engineering, Griffith University, Brisbane, Australia

Kaisheng Yao

Speech Component Group, Microsoft Corporation, Redmond, Washington

• 6.1 Introduction 136
• 6.2 Speech Recognition Overview 138
• 6.3 Variability in the Speech Signal 141
• 6.4 Robust Speech Recognition Techniques 142
  • 6.4.1 Speech Enhancement Techniques 143
  • 6.4.2 Robust Feature Selection and Extraction Methods 145
  • 6.4.3 Feature Normalization Techniques 147
  • 6.4.4 Stereo Data-Based Feature Enhancement 147
  • 6.4.5 The Stochastic Matching Framework 148
  • 6.4.6 Special Transducer Arrangement to Solve the Cocktail Party Problem 155
• 6.5 Summary 155
• References 156

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