Download e-book for kindle: Acoustic Signal Processing for Telecommunication (The by Steven L. Gay,Jacob Benesty

By Steven L. Gay,Jacob Benesty

158 2. Wiener Filtering 159 three. Speech Enhancement by way of Short-Time Spectral amendment three. 1 Short-Time Fourier research and Synthesis 159 one hundred sixty three. 2 Short-Time Wiener clear out 161 three. three energy Subtraction three. four value Subtraction 162 three. five Parametric Wiener Filtering 163 164 three. 6 evaluation and dialogue Averaging recommendations for Envelope Estimation 169 four. 169 four. 1 relocating regular one hundred seventy four. 2 Single-Pole Recursion a hundred and seventy four. three Two-Sided Single-Pole Recursion four. four Nonlinear facts Processing 171 five. instance Implementation 172 five. 1 Subband filter out financial institution structure 172 173 five. 2 A-Posteriori-SNR Voice job Detector five. three instance a hundred seventy five 6. end a hundred seventy five half IV Microphone Arrays 10 Superdirectional Microphone Arrays 181 Gary W. Elko 1. creation 181 2. Differential Microphone Arrays 182 three. Array Directional achieve 192 four. optimum Arrays for Spherically Isotropic Fields 193 four. 1 greatest achieve for Omnidirectional Microphones 193 four. 2 greatest Directivity Index for Differential Microphones 195 four. three Maximimum Front-to-Back Ratio 197 four. four minimal top Directional reaction two hundred four. five Beamwidth 201 five. layout Examples 201 five. 1 First-Order Designs 202 five. 2 Second-Order Designs 207 five. three Third-Order Designs 216 five. four Higher-Order designs 221 6. optimum Arrays for Cylindrically Isotropic Fields 222 6. 1 greatest achieve for Omnidirectional Microphones 222 6. 2 optimum Weights for optimum Directional achieve 224 6. three resolution for optimum Weights for max Front-to-Back Ratio for Cylindrical Noise 225 7. Sensitivity to Microphone Mismatch and Noise 230 8.

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