Models, Measurement and Evaluation

摘要: It is the science of room acoustics that offers an understanding physical processes by which sound waves propagate in enclosed spaces and manner acoustic reflections combine to give effect we refer as reverberation. This chapter aims summarize some main concepts are relevant subsequent material. In particular, this discussion will focus on models simulation techniques for aid description reverberation development dereverberation algorithms. Examples be given involving both simulated impulse responses measured real rooms. The issue evaluation processing then addressed. Measures aim characterize quantity perceived a speech signal described discussed. ends considering well known delay-and-sum beamformer, often considered baseline spatial filtering approach, presents analysis performance levels can expected at such baseline.