ABSTRACT
Recently, metal roofs have been widely utilized in rainwater harvesting, and noise produced by rain pouring on metal roofs cannot be ignored. The goal of this paper is to demonstrate the effects of rain noise resulting from metal roofs on speech identification. Two recordings of rain noise from metal roofs and a speech corpus simulated two actual acoustical listening environments. Two experiments were conducted to investigate the interference of rain noise on speech identification in two different acoustic listening environments. Two different simplified ordinary classroom models were established in this paper. Experiment 1 was conducted in a classroom with a metal roof and Experiment 2 in a two-point simplified ordinary classroom close to a building with metal roofs. Some results showed that speech identification dropped significantly with SNR reduction while correct rates in Experiment 2 are significantly better than those of the experiment.
