The Architectural Acoustic Design for the Grand Theatre of Suzhou Technique Center 苏州科技文化艺术中心大剧场的建筑声学设计
For an acoustic system with multiple spheres, the addition formulae permit the field expansions all referred to the center of one of the spheres, whose boundary conditions can be consequently used to study the acoustic scattering from multiple spheres easily. 对于多球体声学系统,可应用该加法公式将空间声场相对于每一个球体中心展开,这样可以很方便地利用每个球体的边界条件来研究多球体系统的声学散射问题。
Acoustic Design of the Concert Hall of Hebei Arts Center 河北艺术中心音乐厅的声学设计
Active noise control ( ANC) is a new high technology integrated with acoustic, adaptive control and digital signal process and it has become the research focus center of noise control. 主动噪声控制是集声学、自适应控制及数字信号处理等技术为一体的高新技术,已成为国内外噪声控制界的研究热点。
Acoustic Design of Studious of Dalian Broadcast and TV Center 大连广电中心录音、播音、配音室的声学设计
The acoustic densitometry was performed with a 41 × 41 pixel sample volume within the center of the LV cavity or anterior myocardium. 将41×41像素的取样区置于左空腔和左室前壁心肌,用声学密度法进行定量分析。
Phonons have complicated dispersion relations which generally have several acoustic and optical branches, the phonons in acoustic branches called acoustic phonons. The dispersion of acoustic phonons are linear around the center of the first Brillouin zone. 声学声子是声子的一个分支,它在第一布里渊区具有线性的色散关系,并且具有许多特性。
The acoustic emission signal will be the weakest in the top and bottom dead center in reciprocating movement cycle, while the signal is the strongest around the central area. A trend of decline of acoustic emission signals is showed in the central area. 在往复运动周期内,上、下止点处,声发射信号最弱;行程中部附近区域,声发射信号最强;行程中部时,声发射信号呈下降趋势。
Also studied the cylindrical fluid region and two-phase medium with the acoustic pressure within the region to increase the distance from the cylinder center was studied. 还研究了圆柱流体区域和双相介质区域内声压随离圆柱中心的距离增加的变化规律。