Audio Array Processing For Telepresence

This chapter presents embedded implementations of two audio array processing algorithms for a telepresence application as usage examples of the hArtes tool-chain and platform.The first algorithm, multi-channel wide-band beamforming, may be used to record an acoustic field in a room with an array of microphones, the second one, wave-field synthesis, to render an acoustic field with an array of loudspeakers. While these algorithms have parallelisms and kernel functions typical for their algorithm class, they are chosen to be simple in structure, which makes it easier to follow implementation considerations.Starting from an overview of the application and structure of the algorithms in question, several implementations on different levels of hardware abstraction are presented, along with empirical results on both the design process supported and the processing performance achieved.