Investigation on low-frequency measurement method of sound insulation for underwater acoustical material; 详细地阐述了舰船用水声材料的概念、性能、测量方法、发展现状及其应用。
Acoustics& Measurement method of insertion loss and echo reduction for the underwater acoustical material sample GB/T14369-1993声学水声材料样品插入损失和回声降低的测量方法
Acoustical transmission property of the material cured at parameter < 1 was better than that of others. 固化参数<1时,样品透声性能较好;
Measuring acoustical impedance of material by two transducers method in standing wave tube 双换能器法测定管内声阻抗
Design of monitoring and measurement system for the supersonic diffuser of COIL DEPENDENCE OF SOUND ABSORPTION COEFFICENTS UPON THE AREA OF SUSPENDED DIFFUSER AND ACOUSTICAL MATERIAL COIL超扩段监测系统的研制混响室中悬挂扩散板和试件面积对吸声测量结果的影响
Investigation on Sound Insulation Measurement for Underwater Acoustical Material based on Virtual Instrument Technology Acoustical properties of Erhu 虚拟仪器技术在水声材料隔声测试中的应用研究二胡的声学特性
After managing pressure data of multipoints in the tube, this paper has achieved incident and reflected wave components along the tube, acoustical parameters of test material and the impedance of the tube in quantity. 在一维传播的管道声学测量中,通过对多点测量数据的处理可定量求出入射声场和反射声场,并进一步得到声学材料的声学参数和管道的声阻抗。
Measurement of acoustical characteristics of material in duct 管道中测量材料的声学性能
This paper discussed the practical significance of developing fibers and nonwovens composite material for acoustical absorption and sound insulation, introduced simply the application of fibers ( vegetable fiber, inorganic fiber synthetic fiber metal fiber) and nonwovens composite material in noise-reducing. 简介几类纺织纤维(植物纤维、无机纤维、合成纤维、金属纤维)及其非织造布复合材料在降噪领域的应用,说明了开发吸声隔音用纺织纤维与非织造布复合材料的现实意义。
In this paper, virtual instrument technology is introduced simply. Based on B& K PULSE system, sound insulation measurement for underwater acoustical material by virtual instrument technology is investigated detailedly. 对虚拟仪器技术的含义、优势、发展概况及应用程度等作了介绍,并基于B&KPULSE系统,对虚拟仪器技术在水声材料隔声测试中的应用开展了实验研究。
Sound absorption and insulation is the acoustical characteristic of material. Measurement of sound absorption and insulation has an important significance in noise control and acoustical design. 吸声与隔声是材料的声学特性,吸声与隔声测量对噪声控制与声学设计具有重要意义。