Noise Criteria(NC) and Measurement of Natural Gas-fired Combined Cycle Power Plant 级联循环,阶式循环天然气联合循环电厂的噪声值及测量
Through analyzing and computing satisfy environmental noise criteria, a sort of noise absorption wall and sound insulation wall are introduced, which obtained good effect. It has reference value for outdoor machine design in air conditioning system. 在分析和计算了要满足环境允许噪声标准(NC)后,给出了一种吸音墙体和隔声挡墙的设计实例,达到了良好的治理效果,对空调系统室外机设计有参考价值。
Presents several proposals as how to specify the noise criteria, noise source point and measurement method for air conditioning equipment. 对如何确定空气调节设备噪声的标准、声源点及测定方法提出若干建议。
An Opinion on the Noise Criteria(NC) of Dredgers 挖泥船噪声标准(NC)刍议
And the present work discusses the shortage of A-weighted sound level in noise evaluation, applicability of interior noise evaluation for high-speed trains using other noise evaluation criteria, and sound quality objective evaluation based on psychoacoustic parameters. 讨论使用A声级评价车内噪声时的不足,研究其他噪声评价指标的适用性并用于评价车内噪声。最后,基于心理声学参量对高速列车车内声品质进行初步探讨。