体育馆声学设计探讨

本文分析了我国综合性体育馆共同的体形特征及其所导致的运用建筑本学时出现的若干问题，探讨了有关的声学标准，并以工程实践为例，说明必须依靠建筑产学设计和电声设计的结合，才能作好体育馆的声学设计．     

中型多功能体育馆声学设计的探讨

本文从应用角度探讨了中型多功能体育馆声学设计中的一些问题，并提出了一些有用的经验数据和建议。     

《演艺建筑声学装修设计》简介

《演艺建筑声学装修设计》一书是由项端祈教授 和王峥、陈金京、项昆三位高级工程师合著、有关声学 装修的专著(2004年1月由机械工业出版社出版)。 该书是以内装修设计满足声学要求,使声学功能 与装修艺术融为一体为宗旨,简要阐述内装修设计必 须具备的声学基础知识、业务范围、装修设计(传统与 现代)与声学功能结合的实践活动,以及各类演艺建筑 声学装修设计的概况。     

2010建筑未来·声学工程技术论坛邀请函

<正>声学工程技术论坛旨在总结与交流已经完成或在建工程的设计与施工经验,探讨建筑声学、扩声系统、工程施工、声学材料及声学设备等一系列声学专题。     

第八届西太平洋声学大会2003年4月在墨尔本召开

第八届西太平洋声学大会于2003年4月7日—9日在澳大利亚墨尔本召开。19个国家和地区的声学家参加了这次大会。此次会议覆盖了大部分与声学有关的学科,包括生物声学、语音、建筑声学、噪声与振动、电子设备、水声学、音乐、主动噪声控制、环境声学测量、换能器、心理声学、信号处理、超声等。     

《实用建筑声学》评价

近十几年来,已经出版的有关建筑声学方面的书籍为数不少。但至今缺少一本以建筑师为主要对象、建筑工程设计程序为主导,分述各类建筑声学设计的专著。项端祈同志编著的《实用建筑声学》一书的出版(中国建筑工业出版社,1992,12,115万字)填补了这一空白。该书由著名科学家马大猷教授执笔作序,并给予很高的评价。这是我国第一部由建筑师编写、全面论述各类建筑声学设计的专著,是一本集国内外声学设计经验之大成的好书,值得推荐。     

国际声学联合会议在欧洲举行

１９９９年３月１４日至１９日,在德国柏林举行了第１３７届美国声学学会大会暨第二届欧洲声学大会（声学论坛）及第２５届德国声学大会．此次国际声学联合大会是由美国声学学学会（ＡＳＡ）、欧洲声学学会（ＥＡＡ）、及德国声学学会（ＤＥＧＡ）三家共同举办的．来自世界３４个国家或地区的近２０００人参加了会议．分１４个大主题,１９８个分会、收到论文１９５５篇．本次大会旨在推动国际声学各领域的研究,虽称地区性会议,但会议内容涉及声学的各个方面,可称本世纪最后一次全球性的声学会议．会议分的１４个大主题分别为：建筑声学…     

演艺建筑声学设计面临的机遇和挑战

在经济建设取得巨大成就的同时,随之兴起了演艺建筑和文体建筑的高潮,2008年奥运申办 成功,促进了发展的势头。为确保各类厅堂具有良好的音质,声学工程师肩负着设计的重任。本文简 述建筑声学面临的机遇和挑战。     

国家奥林匹克体育中心综合体育馆和游泳馆的声学设计

国家奥林匹克体育中心包括综合体育馆、游泳馆、两个练习馆和体育场等五项工程.本文着重介绍体育中心两个主馆的声学设计、竣工后的调试和取得的成果,以及笔者对今后大型体育馆声学设计的建议.     

美国声学学会75周年暨147届学术会议建筑声学论文评介

美国声学学会最初是于1928年7月30日由F．R．Watson，V．O．Kundsen以及W．Waterfall倡议作为建筑声学工程师的组织而成立的。1928年12月27日在纽约贝尔电话实验室举行成立会议，至今已走过了75周年的历程。     

An analytical model to evaluate the cocktail party effect in restaurant dining rooms: A case study

This paper proposes the use of a simplified analytical model to evaluate acoustic conditions in restaurant dining rooms required for ensuring the intelligibility of conversations. The model is useful for design applications and is suitable for evaluating the maximum number of speakers present in a restaurant room in order to ensure intelligibility of conversations taking place at each table in the presence of background noise caused by conversations at other tables. The maximum number of speakers is studied in relation to the sound level difference between useful and disturbing sound, sound absorption of the room, and the average speaker–listener distance. The model is applied to the case of a dining hall in a multipurpose centre, which is currently in the planning stage.     

Measurement of sound absorption coefficients of flat surfaces in a workshop

To improve the acoustic treatment of facings and provide appropriate solutions for noise control at workplace, it is necessary to develop methods of acoustic characterization of the walls in industrial halls. Sound absorption coefficient measurement in industrial rooms is however quite a difficult task because of the partially reverberant conditions. This work describes the measurement of the sound absorption coefficient of flat panels subject to small angle sound incidence, in an industrial hall using an experimental device equipped with an acoustic array. The directivity of this array has been optimized so that the major part of the received acoustic energy would come from one portion only of the investigated facing, this, in turn attenuating the reflected beams due to the reverberation. This new device includes an impulse sound source targeting the panels. The present article focuses mainly on the sound source design and implementation. It also describes some sound absorption measurements carried in a semi-anechoic chamber and in an industrial hall in order to examine the performance of the device. Sound absorption coefficients of several standard liners obtained through this device have been compared to those resulted from the two microphone technique.     

Sound strength and reverberation time in small concert halls

Sound strength and reverberation time measurements have been carried out in six small concert halls in Cambridge, UK. The sound strength G is a measure of the physical sound level in a concert hall and is closely related to the subjective sensation of loudness. It compares integrated impulse responses at a point in the measured room with that measured at ten metres distance in the free field.The aim of the measurements is to investigate the acoustic characteristics of the halls concerning sound strength and reverberation time. Furthermore the effect of the variable acoustics in the halls on these parameters is discussed in this paper. Especially for bigger ensembles it is often desirable to reduce the sound level in a small concert hall. The measurement results show that for a fixed hall volume, this can primarily be achieved by decreasing the reverberation time in the hall. However, with regard to the sound quality of a hall and the recommended reverberation times for chamber music, reverberation time cannot be reduced by an arbitrary extent. Therefore reverberation time and strength have to be balanced very carefully in order to obtain sufficient reverberation whilst at the same time avoiding excessive loudness. Finally the measured strength levels are compared to values derived from traditional and revised theory [Barron M, Lee L-J. Energy relations in concert auditoriums. J Acoust Soc Am 1988;84(2):618-28] on strength calculations in order to assess the accuracy of the theory for small chamber music halls. Possible reasons for the low measured strength levels observed are discussed with reference to related design features and objective acoustic parameters.     

广东星海音乐厅室内乐厅的声学设计

室内乐厅是以演奏室内乐为主、兼供独奏(唱)、音乐讲座、文娱演出和立体电影所用的多功能厅堂。为使各项功能均具有最佳的声学条件,设置了用计算机调控混响时间的装置。本文概要介绍室内乐厅的声学设计、但侧重于计算机调控混响时间所取得的成效。     

BLENDING ARCHITECTURAL AND ACOUSTICAL FACTORS IN DESIGNING A ROUND EVENT HALL

A design process consisting of temporal and spatial factors aspects is proposed that blends architectural design with acoustic design. Using this design process, a multi-purpose event hall, which is a part of a complex architecture, was designed. Acoustic measurements were conducted to obtain temporal and spatial factors in the sound field after construction had been completed, the results of which were favourable. One goal of this project was to solve acoustic problems caused by the round shape of the event hall, where the architectural design had already been determined by the theme and concept of the complex. The process is considered to be successful, since the acoustic problems were solved without unduly affecting the architecture of the hall in this worst-case scenario. In addition, new knowledge of methods for solving acoustic problems caused by the round architecture was gained during the design work.     

厅堂声学测量中不同激励声源的比较

基於脉冲响应积分的音乐厅和剧院观众厅声学特性的测量目前有三种使用不同激励声源的测试方法:人工脉冲声源、伪随机噪声序列(MLS)、以及用正弦扫频信号。这些技术各有其优缺点,在实际应用中为了方便根据具体情况选择不同的激励声源,通过在一个音乐厅现场的实测数据比较丁三种声源的实测结果,发现对混响时间测量三种不同的激励声源给出的结果基本一致,但是对明晰度和一些其他的指标,脉冲声源给出的结果与用MLS和扫频信号给出的结果有较明显的差别。对实际中如何选择具体的技术也做了建议。     

Acoustical remodeling of a large fan-type auditorium to enhance sound strength and spatial responsiveness for symphonic music

The Grand Theater in the Sejong Performing Arts Center in Seoul, Korea is a proscenium hall with 3022 seats. Originally built in 1978, the Grand Theater was remodeled in 2004 to provide variable reverberation time (RT) using a sound system. Recently, a second remodeling was scheduled to enhance the hall’s acoustic quality, especially its RT, sound strength (G) and binaural quality index (BQI = 1-IACCE3), based on architectural acoustic analysis. In the remodeling plan, the wall covering and chair materials were changed to produce longer RT and higher G. For the remodeling design, side balconies were added to the first and third floors to provide lateral reflections to the audience area. The orchestra shell and various ceiling/wall reflectors were planned to provide more early reflections to the audience area. To verify the design, the effects of these structures on the sound pressure levels and spatial parameters of early sound in the audience area were investigated by open-type 1:10 scale model measurement. In addition, the acoustical qualities of the remodeled hall were evaluated using computer simulations and 1:50 scale model measurement. The results show that G was improved by 5 dB and BQI by 0.24, whereas the occupied RT at mid-frequencies became variable from 1.47 to 2.24 s.     

声悬浮及声速测定实验仪的设计

《声速测定》是大学物理实验中比较普遍的一个综合性实验。在声速测定实验仪的基础上,改进了信号源,并制作了声悬浮配件,使其实现既可以用多种方式测量声速,又可演示声悬浮实验现象。声悬浮及声速测定实验仪悬浮稳定性强,声速测定准确,仪器造价低,使用方便,这样设计节省了实验室资源和空间。