學校多功能廳音響系統的設計與實現

電子機電論文編號:JD592 論文字數:30415,頁數:60

目錄
0  前言 1
1  聲場的定位與供聲方式的選擇 2
1.1 聲場的定位 2
1.2 供聲方式的選擇 2
1.2.1 集中供聲 2
1.2.2 分散式供聲 3
1.2.3 分區式供聲 3
2  聲場設計 4
2.1 混響時間與混響半徑 4
2.2 聲壓級與最大聲壓級的估算與確定 6
2.3 傳輸頻率特性 7
2.4 傳聲增益 8
2.5 聲場不均勻性 8
2.6 額定噪聲 9
2.6.1 物理意義 9
2.6.2 測量與計算 9
2.7 各項聲學特性總結 10
3  擴聲系統的設計 13
3.1 揚聲器的指標及選擇 13
3.1.1 揚聲器的技術指標 14
3.1.2 揚聲器的選擇 21
3.2 功率放大器的指標及選擇： 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標 26
3.2.3 功率放大器的選擇 27
3.3 調音臺的性能指標及選擇 30
3.3.1 調音臺的構成和簡要工作原理 30
3.3.2 調音臺的選擇 31
3.3.3 頻率衡器的主要指標與選擇 31
3.3.4 混響效果器 32
3.3.5 其他周邊設備的考慮 33
4  總體設計 37
4.1 設計系統框圖 37
4.2 音控室的布置 37
結論 38
致謝語 39
參考文獻 40
附錄一  英文原文 41
附錄二  中文譯文 50

[摘要] 人們對現代電子技術,的強烈依賴，推動了現代電子技術飛速的發展，使得一個多功能廳的系統功能，需要從多媒體聲光像多系統的配合才能滿足觀眾交流欣賞的需求。本文主要介紹的是音響系統的設計方法，其主要設計工作包括考察現場確定工程性質、選擇合適的供聲方式、建立聲場并設計出一套滿足相應功能要求的音響系統等。文中詳細展示了音響系統的設計流程、各種參數的定義與計算以及多種相關器材的技術指標和選擇方案。其中最為重要也是最為復雜的就是聲場的設計，此設計不僅涉及到多種參數的計算還要參考國家對相關參數的規定，才能建成即符合校方要求又達到國家設計標準的聲場。然后根據聲場的建設條件以及揚聲器的特點綜合考慮選擇揚聲器系統和與之配套的功率放大器，最后確定調音臺和其他周邊設備的選擇。
[關鍵詞] 供聲方式；建立聲場；混響時間；揚聲器；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