A Practical Acoustic Scene Analysis System

Abstract

This chapter describes a practical real-time capable system designed to verify the claim developed throughout the previous chapters that acoustic scene analysis tasks can be tackled by wavefield decomposition methods using microphone arrays. In this chapter and in Appendix F, it will be shown that a circular microphone array mounted into a rigid cylindrical baffle is capable of performing waveform estimation and parameter estimation in the sense of Chapter 5 in real acoustic environments. The remainder of this chapter is organized as follows. Section 6.1 discusses hardware, software, and algorithmic details utilized throughout the evaluation process. The measurements to be presented in Section 6.2 were performed in a real room allowing for varying degrees of reverberation.