基于Smaart 多通路声学测量系统的电声系统调试与优.docx

PAGE \* MERGEFORMAT 2基于Smaart 7多通路声学测量系统的电声系统调试与优化信息工程专业 2010级信工（1）班 麦文聪指导教师：蔡阳生摘要 扩声系统作为一种信号实时放大系统，被广泛运用于各种文化场所。扩声系统设计搭建完成后，需要求其进行测量调试。随着电声领域的发展，电声测量工具由硬件仪器逐渐被测量软件所代替。本文运用声场测量软件Smaart 7对所设计的测量系统的频谱、延时等进行测量。考虑声场环境的整体声学特性，设立了三个测量点。综合分析三个测量点所得到的数据，运用数字处理器对该系统进行调试优化，主要包括分频设置、延时调整、均衡补偿等。最后，通过调试后的放音对比，发现运用Smaart 7进行测量调试后，扩声系统性能有了明显的提升。关键词 实时频谱；延时；分频；均衡补偿 ABSTRACT Audio system as a real-time signal amplification system, is widely used in a variety of cultural venues. After the audio system set up completely, request it be measured and debugging. With the development of acoustic field, acoustic measurement tools by the hardware instrument is gradually replaced by measurement software. In this paper, we use Smaart 7 to measure the spectrum and delay of audio system. Consider the overall sound field acoustic characteristics of the environment, the establishment of three measurement points. Comprehensive analysis of the data obtained in the three measurement points, the use of digital processors optimized for debugging the system, including the crossover settings, delay adjustment, EQ compensation. Finally, through the contrast before and after debugging, found the use of Smaart 7 debugging , the audio system performance has been significantly improved.KEYWORDS Real-time spectrum；time delay； frequency division；EQ compensation目录 TOC \o 1-3 \u 前言 PAGEREF _Toc387698639 \h 12. 扩声系统调试与优化 PAGEREF _Toc387698640 \h 32.1 分频设置 PAGEREF _Toc387698641 \h 32.2 延时设置 PAGEREF _Toc387698642 \h 42.3均衡补偿 PAGEREF _Toc387698643 \h 52.4 本章小结 PAGEREF _Toc387698644 \h 63. Smaart 7的主要测量功能 PAGEREF _Toc387698645 \h 73.1 Smaart 7测量配置与设置 PAGEREF _Toc387698646 \h 73.2 Smaart 7的主要功能 PAGEREF _Toc387698647 \h 93.2.1实时频谱测量 PAGEREF _Toc387698648 \h 93.2.2传递函数测量 PAGEREF _Toc387698649 \h 103.2.3多通路声学测量数据处理 PAGEREF _Toc387698650 \h 113.3 本章小结 PAGEREF _Toc387698651 \h 124. 多通路声学测量系统的搭建 PAGEREF _Toc387698652 \h 134.1 系统连接图及设备清单 PAGEREF _Toc387698653 \h 134.2各设备功能介绍 PAGEREF _Toc387698654 \h