The Study Of Middle And Small Size Classroom's Acoustical Environment

With the development of education, the classroom acoustical environment has become one of the important objects in the research of acoustics. For excellent acoustics environment, suitable reverberation time, enough loudness and homogeneous sound field distribution; excellent speech articulation; no echo, sound focusing and obvious noise jamming etc are needed by the classroom. The value and objective of this article are that, based on the national condition, analysis has been proposed in details to guarantee the high quality acoustics environment of the classroom.Firstly, two evaluative parameters of classroom acoustic environment are put forward: reverberation time and early reflected sound. Some important physical variables, such as reverberation time, early reflected sound, early decay time and speech articulation, have been analyzed according to the theories of the statistic /geometric acoustics by use of software Ecotect. Then, some conclusions have been drawn. Consulting tothe conclusions of acoustics analysis, some feasible projects have been discussed. Some attentions are given to such projects to meet the requirement of economy and decoration. Finally, the conclusion of analysis is validated by an examination design.The architectural acoustics has close relationship with other subjects, it is very important to consider other factors in the study of special classroom acoustics environment.