Universal multi-channel acoustic measurement and analysis system

所要求的设备是便携式、通用、多用途声学测量和分析系统，具有声强测量能力和多用途分析软件。 软件选项将允许声级计功能、实时和FFT分析、声音强度测量、建筑声学分析、传递函数分析和使用伪随机噪声信号确定混响时间。 该系统将为UBC声学与噪声研究集团提供可靠、便携、先进的测量和分析能力，并大大改善现有过时设备的功能。 它将支持所有当前和未来的研究，包括室内声场特性，测量房间的脉冲响应，测量“绿色”建筑中的消声器和噪声控制措施的插入损耗，以及测量有源噪声控制系统的有效性。 它将成为目前正在规划的UBC/BCIT绿色屋顶声音传输测量设施的基本设备。 工作室的声环境对工人的健康、舒适和生产力有直接影响。 这些问题的直接和间接社会经济代价可能是巨大的。 “绿色”建筑对世界可持续发展至关重要。 “绿色”建筑物具有特殊的声学问题，导致居住者非常不满。 这些问题必须加以调查和解决。 “绿色”屋顶具有噪音控制的潜力，必须加以研究。 噪声控制传统上涉及被动方法。 噪声控制的未来涉及主动方法。 拟议的研究将提供知识，预测工具和噪声控制措施，使工作室的声学环境在设计阶段得到优化。

The equipment requested is a portable, universal, multi-purpose, acoustical measurement and analysis system with sound-intensity measurement capability and multi-purpose analysis software.  Software options will allow sound-level-meter functionality, real-time and FFT analysis, sound-intensity measurement, building-acoustics analysis, transfer-function analysis, and reverberation time determination using pseudo-random noise signals.  This system will give the UBC Acoustics & Noise Research Group a reliable, portable, state-of-the-art measurement and analysis capability with greatly improved functionality over existing, obsolete equipment.  It will support all current and future research, including room sound-field characterization, measurement of the impulse response of rooms, measurement of the insertion loss of ventilators and noise-control measures in 'green' buildings,  and measurement of the effectiveness of active-noise control systems.  It will form the basic equipment for a UBC/BCIT green-roof sound-transmission-measurement facility currently being planned.       The acoustical environment in a workroom has a direct effect on the health, well-being and productivity of the workers.  The direct and indirect socio-economic costs of such problems can be enormous.  'Green' building is essential to world sustainability.  'Green' buildings have particular acoustical problems which lead to great occupant dissatisfaction.  The problems must be investigated and resolved.  'Green' roofs have potential for noise control that must be investigated.  Noise control traditionally involves passive methods.  The future of noise control involves active methods.  The proposed research will provide the knowledge, predictive tools and noise-control measures to allow the acoustical environment in workrooms to be optimized at the design stage.