The acoustic environment of the classroom is one of the most important factors influencing the teaching and learning effects of the teacher and students.It is critical to ensure good speech intelligibility in classroo...The acoustic environment of the classroom is one of the most important factors influencing the teaching and learning effects of the teacher and students.It is critical to ensure good speech intelligibility in classrooms.However,due to some factors,it may not be easy to achieve an ideal classroom acoustic environment,especially in large-scale multimedia classrooms.In a real renovation project of 39 multimedia classrooms in a university,seven typical rooms were selected,and the acoustic environment optimisation design and verification for these multimedia classrooms were performed based on simulation.First,the acoustic and sound reinforcement design schemes were determined based on the room acoustics software ODEON.Next,the effects of the optimisation design were analysed,and the simulated and measured results were compared;the accuracy of using the reduced sound absorption coefficients,which were determined empirically,was also examined.Finally,the recommended reverberation times(RTs)in multimedia classrooms corresponding to speech intelligibility were discussed,the effectiveness of the speech transmission index(STI)as a primary parameter for classroom acoustic environment control was considered,and the acoustic environment under the unoccupied and occupied statuses was compared.The results revealed that although there are many factors influencing the effect of classroom acoustic environment control,an adequate result can be expected on applying the appropriate method.Considering both the acoustic design and visual requirements also makes the classroom likely to have a good visual effect in addition to having a good listening environment.展开更多
Since there are many different ways to carrying out Multimedia Corpus Based Approach,the author chooses a typical classroom pattern to demonstrate its implementation procedures.Owing to the outstanding advantages of M...Since there are many different ways to carrying out Multimedia Corpus Based Approach,the author chooses a typical classroom pattern to demonstrate its implementation procedures.Owing to the outstanding advantages of Multimedia Corpus and the instruction of language functions,the corresponding classroom implementation procedures are presented from aspects of pre-class preparation,in-class procedures and after-class learning instruction in the Multimedia Corpus Based Approach.展开更多
教室是青少年在学校内活动的主要场所,其照明质量对于青少年的视觉健康、生理和心理健康有着重大影响。随着多媒体教室在中国基本普及,针对多媒体教学方式的教室照明相关研究受到高度重视,研究热度逐步提高。本文基于中国知网CNKI和Web ...教室是青少年在学校内活动的主要场所,其照明质量对于青少年的视觉健康、生理和心理健康有着重大影响。随着多媒体教室在中国基本普及,针对多媒体教学方式的教室照明相关研究受到高度重视,研究热度逐步提高。本文基于中国知网CNKI和Web of Science数据库,以“教室照明”相关主题的核心文献为研究对象,利用CiteSpace软件进行文献计量和可视化分析,并通过梳理代表性文献,综述该领域所取得的研究成果,总结其研究现状并提出未来展望。结果表明:多媒体教室照明领域研究热度呈上升趋势,“多媒体教室照明光环境研究”及“多媒体教室照明对健康的影响研究”是现状的两大研究方向。国内教室照明研究领域逐渐从“视觉效应”发展到“光生物效应”,目前正处于健康照明的起步阶段,进一步向智慧照明发展。国外则侧重将光环境与其他物理环境结合研究。通过综述多媒体教室照明研究进展,为未来教室照明设计及光环境优化提供参考。展开更多
基金This study was supported by the National Natural Science Foundation of China(No.51778100,No.11774266,No.51878110,No.51278078).
文摘The acoustic environment of the classroom is one of the most important factors influencing the teaching and learning effects of the teacher and students.It is critical to ensure good speech intelligibility in classrooms.However,due to some factors,it may not be easy to achieve an ideal classroom acoustic environment,especially in large-scale multimedia classrooms.In a real renovation project of 39 multimedia classrooms in a university,seven typical rooms were selected,and the acoustic environment optimisation design and verification for these multimedia classrooms were performed based on simulation.First,the acoustic and sound reinforcement design schemes were determined based on the room acoustics software ODEON.Next,the effects of the optimisation design were analysed,and the simulated and measured results were compared;the accuracy of using the reduced sound absorption coefficients,which were determined empirically,was also examined.Finally,the recommended reverberation times(RTs)in multimedia classrooms corresponding to speech intelligibility were discussed,the effectiveness of the speech transmission index(STI)as a primary parameter for classroom acoustic environment control was considered,and the acoustic environment under the unoccupied and occupied statuses was compared.The results revealed that although there are many factors influencing the effect of classroom acoustic environment control,an adequate result can be expected on applying the appropriate method.Considering both the acoustic design and visual requirements also makes the classroom likely to have a good visual effect in addition to having a good listening environment.
文摘Since there are many different ways to carrying out Multimedia Corpus Based Approach,the author chooses a typical classroom pattern to demonstrate its implementation procedures.Owing to the outstanding advantages of Multimedia Corpus and the instruction of language functions,the corresponding classroom implementation procedures are presented from aspects of pre-class preparation,in-class procedures and after-class learning instruction in the Multimedia Corpus Based Approach.
文摘教室是青少年在学校内活动的主要场所,其照明质量对于青少年的视觉健康、生理和心理健康有着重大影响。随着多媒体教室在中国基本普及,针对多媒体教学方式的教室照明相关研究受到高度重视,研究热度逐步提高。本文基于中国知网CNKI和Web of Science数据库,以“教室照明”相关主题的核心文献为研究对象,利用CiteSpace软件进行文献计量和可视化分析,并通过梳理代表性文献,综述该领域所取得的研究成果,总结其研究现状并提出未来展望。结果表明:多媒体教室照明领域研究热度呈上升趋势,“多媒体教室照明光环境研究”及“多媒体教室照明对健康的影响研究”是现状的两大研究方向。国内教室照明研究领域逐渐从“视觉效应”发展到“光生物效应”,目前正处于健康照明的起步阶段,进一步向智慧照明发展。国外则侧重将光环境与其他物理环境结合研究。通过综述多媒体教室照明研究进展,为未来教室照明设计及光环境优化提供参考。
