Integrated Microsystems

11Micropower Adaptive VLSI Systems for Acoustic Source Localization and Separation

Milutin Stanaćević

Gert Cauwenberghs

CONTENTS

1. 11.1 Introduction
2. 11.2 Micropower Acoustic Localizer
   1. 11.2.1 Gradient Flow Principle
   2. 11.2.2 Mixed-Signal VLSI Implementation
      1. 11.2.2.1 Gradient Computation
      2. 11.2.2.2 Common-Mode Suppression
      3. 11.2.2.3 Bearing Estimation
3. 11.2.3 Localization Performance
   1. 11.2.3.1 Ground-Based Vehicles Localization
   2. 11.2.3.2 Speaker Localization
4. 11.3 Gradient Flow ICA
   1. 11.3.1 ICA Processor Architecture
      1. 11.3.1.1 Vector Matrix Multiplication
      2. 11.3.1.2 Update Rule Implementation
   2. 11.3.2 Real-World Speech Separation and Localization Experiments
5. 11.4 Conclusions
6. References

11.1 Introduction

Blind separation of real-world acoustic sources ...