声学与建筑

建筑声学技术已有100多年的历史，上海市声学学会也已成立20年，但建筑声学在许多建筑工程的设计和建设中仍未受到足够的重视，出现了很多不应有的遗憾。文章阐述了声学与建筑的密切关系及其对建筑设计技术、工程质量及城市人居环境的重要作用，以期引起人们对建筑声学技术的更多重视。     

一款不应忽略的书架箱

在我的印象中，欧美名牌器材大多是来自美国、法国、瑞士、德国、英国、意大利、丹麦等国，而音乐圣地奥地利除了AKG耳机外还有什么Hi-End级器材呢？本文要介绍的是舍下所用的奥地利名牌音箱。奥地利的确不是一个盛产音响器材的国家，但他们的产品却是精良过人，例如历史悠久、备受专业界推崇的AKG和皇牌 LP唱头，还有笔者目前所用的Vienna Acoustics维也纳音箱，都是奥地利音响器材的菁华。奥地利音响器材不为人知，也和该国那种较为低调不事张扬的人文风格有关，其产品广告投入很少，因此它们也理所当然地没有其他国家品牌器材那么知…     

Acoustics of boiling solutions

The possibility of an anomalous effect of the component composition on disturbance propagation in boiling solutions has been established. A criterion defining the cases in which the monotonic behavior of binary systems with respect to concentration is disturbed during sound propagation in them has been derived.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 56, No. 5, pp. 709–715, May, 1989.     

音箱喇叭喷涂制模初探

介绍了电弧喷涂工艺制作塑料模具的工艺过程。简要叙述了喷涂制模法的特点、工序步骤,以及模具结构的设计过程。音箱产品具有类型多、产品型号更新快的特点,采用喷涂法制作音箱喇叭模具工艺简单,制模周期短,成本低,适合于新产品开发和小批量多品种生产。     

声学和人的生活质量

２１世纪将是和平繁荣的世纪，科学将主要为提高人的生活质量而比２０世纪更高的速度发展，声学主要是和平的科学，将对人们的健康，舒适生活作出更大贡献。     

大厅声学发展中若干热点的管见

1962年纽约林肯中心新建音乐厅(Philharmonic Hall),由于存在严重音质缺陷而引起了一场骇然大波。以后虽屡请国际声学名家改进,仍未见效,甚至更糟[1]。于是有人对音乐厅音质设计产生了一些消极思想。认为音质设计中经验艺术重于科学技术,成功与否要碰运气。也有人认为音质设计规则早在五十年代初就己成熟,照章办事,可保无虞,如要别出心裁搞些新玩意儿,则必出毛病。1976年该厅拆掉内部重建,就采用传统“鞋匣”式,音乐界的尖锐意见也就此平息了。 结局难道就这样完了吗?作为一项工程的改建,在没有其它把握时,采取这一办法无可非议,但是作为科…     

声学和人的生活质量

二十一世纪将是和平繁荣的世纪。科学将主要为提高人的生活质量而比二十世纪更高的速度发展。声学主要是和平的科学，将对人们的健康、舒适生活作出更大贡献。     

Integration of Mechanics and Acoustics in a Sandwich Fuselage. Part IV

Until now only the stiffened skin structural concept has been discussed. A different structural concept is the sandwich concept. Sandwiches consist out of layers. The outer layers are called facings and are generally thin and of high density. These facings are supposed to resist most of the edgewise loads and flat-wise bending moments. The inner layer is called the core and is generally rather thick and of low density. The task of the core is to separate and stabilize the two facings, transmit shear between the facings and provide most of the shear rigidity. For sandwich panels no stiffeners are needed. Therefore no mass will be lost in stiffeners resulting in a relative high value of mass per unit area of the skin which results in a better TL according to the mass law. Also the core can be made of a material with high insulation properties (acoustic and thermal). The number of discrete stiffeners can then be minimized, since they are only required at places where high concentrated forces have to be introduced (wing, landing gear, etc.) or diverted (from cut-outs). This can reduce the production and maintenance cost. So it can be concluded that the sandwich concept offers great potential for multidisciplinary fuselage design. In this part the integration of structural and acoustical aspects will be discussed. First the structural aspect will be discussed followed by the acoustical aspect. Finally the possibilities to integrate these aspects are explained.     

关于社会声学研究的回顾

社会声学概念的明确提出是本世纪初的事情，尽管关于这方面的研究由来已久。通过回顾系统介绍了社会声学研究内容的变迁和研究方法改进的历程，明确了社会声学所面临的问题和应承担的使命。希望这篇综述能够对我国社会声学基础性研究提供新的借鉴和研究思路。     

Integration of Acoustics and Mechanics in a Stiffened Shell Fuselage. Part III

To explore the possibilities of a multidisciplinary fuselage design, first the mechanical properties of a stiffened fuselage are discussed. This gives an idea of the available room to vary the structural parameters of such a fuselage. Section 1 describes the design window of a CFRP stiffened fuselage. This design window is created by the possible CFRP fuselage designs (by varying the frame pitch and skin thickness) which are lighter than the lightest aluminium stiffened fuselage. In the remainder of Part III the integration of acoustical insulation in a stiffened shell fuselage is discussed resulting in a design strategy for optimal integration.     

非协调单元在声学边界元法中的应用

利用非协调元离散Helmholtz边界积分方程,有效地解决协调元计算中的角点问题。为消除积分奇异性,提出了非协调元法中的极坐标变换方法。采用CHIEF法加Lagrange乘子法进行处理特征频率处解的不唯一性。解线性代数方程组获得结点处声压,网格点处的声压通过结点平均或单元平均的方法计算。通过计算脉动球和立方体的表面辐射声压,并将协调元和非协调元的计算结果做了比较,证明本文方法的有效性和对非光滑表面的适应性。     

《声学技术》编辑委员会

名誉主编(Honorary Editors in Chief):冯绍松(FENG Shaosong)中国科学院声学研究所东海研究站王季卿(WANG Jiqing)同济大学声学研究所主编(Editors in Chief):张叔英(ZHANG Shuying)中国科学院声学研究所东海研究站姚蓝(YAO Lan)中国船舶重工集团公司第726研究所副主编(Associ