学校多功能厅音响系统的设计与实现

文档编号:JD592 文档字数:30415,页数:60

[摘要] 人们对现代电子技术,的强烈依赖，推动了现代电子技术飞速的发展，使得一个多功能厅的系统功能，需要从多媒体声光像多系统的配合才能满足观众交流欣赏的需求。本文主要介绍的是音响系统的设计方法，其主要设计工作包括考察现场确定工程性质、选择合适的供声方式、建立声场并设计出一套满足相应功能要求的音响系统等。文中详细展示了音响系统的设计流程、各种参数的定义与计算以及多种相关器材的技术指标和选择方案。其中最为重要也是最为复杂的就是声场的设计，此设计不仅涉及到多种参数的计算还要参考国家对相关参数的规定，才能建成即符合校方要求又达到国家设计标准的声场。然后根据声场的建设条件以及扬声器的特点综合考虑选择扬声器系统和与之配套的功率放大器，最后确定调音台和其他周边设备的选择。
[关键词] 供声方式；建立声场；混响时间；扬声器；功率放大器
The Design and Implementation of Sound System
of a Multi-function Hall of School
[Abstract] Nowadays people are strongly dependent on modern electronic technology，it promoted the modern electronic technology's rapid development. A multi-function hall in the system need to meet a variety of system functions to meet the needs of the audience to enjoy and share, which includes a multimedia, sound, light, images and other systems. This paper presents a sound system design. The main work was to study the scene，, determine the nature of projects, choose a suitable way for the sound, the establishment of sound field and design a sound system which meets the requirements of sound field. This paper demonstrated the sound system design process，including the various parameters of the definition and calculation, a variety of related equipment, technical indicators and choosing the project. One of the most important thing is the design of sound field, which involves the calculation of various parameters and state requirements. In order to establish sound field., it is in line with the requirements of the school and national design standards. Then choice of speaker systems and its accompanying power amplifier according to the construction of sound field conditions and the characteristics of speakers. Finally, determine mixer and other peripheral equipment models.

[Key words] Sound manner; The establishment of sound field; Reverberation time; Loudspeakers; Power amplification

目录
0  前言 1
1  声场的定位与供声方式的选择 2
1.1 声场的定位 2
1.2 供声方式的选择 2
1.2.1 集中供声 2
1.2.2 分散式供声 3
1.2.3 分区式供声 3
2  声场设计 4
2.1 混响时间与混响半径 4
2.2 声压级与最大声压级的估算与确定 6
2.3 传输频率特性 7
2.4 传声增益 8
2.5 声场不均匀性 8
2.6 额定噪声 9
2.6.1 物理意义 9
2.6.2 测量与计算 9
2.7 各项声学特性总结 10
3  扩声系统的设计 13
3.1 扬声器的指标及选择 13
3.1.1 扬声器的技术指标 14
3.1.2 扬声器的选择 21
3.2 功率放大器的指标及选择： 23
3.2.1 功率放大器的工作原理 23
3.2.2 功率放大器的主要性能指标 26
3.2.3 功率放大器的选择 27
3.3 调音台的性能指标及选择 30
3.3.1 调音台的构成和简要工作原理 30
3.3.2 调音台的选择 31
3.3.3 频率衡器的主要指标与选择 31
3.3.4 混响效果器 32
3.3.5 其他周边设备的考虑 33
4  总体设计 37
4.1 设计系统框图 37
4.2 音控室的布置 37
结论 38
致谢语 39
参考文献 40
附录一  英文原文 41
附录二  中文译文 50

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