Study On Assessment And Improvement Of Classroom Electroacoustic Environment

As a result of college expansion, the school of classroom increases, the new and retrofit classrooms are equipped with multimedia, computers, projectors, speakers, etc from soup to nuts. Classrooms equipped with a complete set of multimedia equipment, and people often ignore the problems existing in the system of electroacoustic, especially big class teaching ladder classroom with acoustic defects problem. In this study a modified experiment classroom as the research object, focuses on the study of classroom electroacoustic systems, architectural acoustics research is complementary, and conducted the following research:First of all, through reading literature, carding the research status of the acoustic environment in classroom, putting forward the research problem, summarized the research content and research methods.Secondly, according to the research of the classroom building parameters, using professional electric acoustic simulation software EASE to model the classroom, set up sound absorption material, the arrangement of the speaker, collecting maximum sound pressure level, sound field nonuniformity and reverberation time parameters,etc, comparing and analyzing above parameters with the relevant national standard and determining whether meet the standard requirements.Then, after the EASE simulation, using a sound level meter, oscilloscope, signal generator, such as equipment, Measure to collect above parameters again. Comparing with EASE simulation data at the same time, according to the standard of the acoustic environment to carry on the comprehensive evaluation, find out the classroom acoustic defects existing in the sound field. According to the acoustic defects, analyzing the reason and putting forward acoustic and build sound improvement scheme.Finally, summarizing the whole research process, reflect deficiencies, and putting forward future research on the basis of the present study goal and improve direction, to further advance the implementation of the improved scheme and related design and development of measuring equipment.