jaue2021-009: Study On The Simulation Of Electroacoustic Environment In The Classroom

Abstract

With the development of educational informatization, which has led to the electro-acoustic environment of classrooms becoming a new topic in the field of architectural acoustics. This article summarized the basic evaluation indicators of the electro-acoustic environment . Secondly, took the classroom to be built in Tianjin Weiming Middle School with a size of 9.6m × 8.1m × 4.5m for example, and the electronic blackboard, one of the main sound sources in the current teaching process, was taken into consideration. Based on Electro-acoustical Simulator for Engineers(EASE) software, the classroom model was built and its electro-acoustic environment was simulated. Then compared the acoustic parameter data obtained from the simulation with the evaluation criteria. The results show that the RT under the current design conditions meets the needs of classroom use; the SPL non-uniformity at 4000Hz is 13.07dB, which cannot meet the requirements of the specification, and the transmission frequency characteristics are not within the standard range; when the C50 is at 500Hz, the degree is -10.2dB, which is far less than the normative standard; the rapid speech transmission index and articulation loss are at a poor level on both sides of the classroom far from the speaker.