EASE声场分析说明
EASE吸声材料名称中文说明及吸声系数表
EASE3.0吸声材料名称、说明及吸声系数表 序号 吸声材料名称 材料英文说明 材料中文说明 在下列频率下的吸声系数（f:Hz）
125 250 500 1000 2000 4000 8000 1 10% 10%SoundAbsorbing 吸声系数为0.1的理想表面材料 0.10 0.10 0.10 0.10 0.10 0.10 0.10 2 20% 20%SoundAbsorbing 吸声系数为0.2的理想表面材料 0.20 0.20 0.20 0.20 0.20 0.20 0.20 3 2DGYPDIFF RPG2DEMENSIONALGYPSUMDIFFUSOR RPG二维石膏扩散体 0.30 0.21 0.28 0.63 0.21 0.36 0.30 4 2"LAPNDRY 2"THK.75LB3MILPERFPLASCOVER 2"厚0.75磅3密耳完美的灰膏涂层 0.99 0.97 0.92 0.99 0.99 0.99 0.99 5 30% 30%SoundAbsorbing 吸声系数为0.3的理想表面材料 0.30 0.30 0.30 0.30 0.30 0.30 0.30 6 3"FIBINSL FIBGLSFACEDWKRAFTPAPER3.5"THK 3.6"牛皮纸板 0.38 0.98 0.99 0.62 0.36 0.24 0.20 7 40% 40%SoundAbsorbing 吸声系数为0.4的理想表面材料 0.40 0.40 0.40 0.40 0.40 0.40 0.40 8 4"LAPNDRY 4"THK.75LB3MILPERFPLASCOVER 4"厚0.75磅3密耳完美的灰膏涂层 0.99 0.99 0.99 0.99 0.99 0.99 0.99 9 50% 50%SoundAbsorbing 吸声系数为0.5的理想表面材料 0.50 0.50 0.50 0.50 0.50 0.50 0.50 10 500HZPANEL 500HzHelmholtzResonatorw/fg 500HZ赫尔姆兹共振器W/fg 0.17 0.51 0.70 0.15 0.07 0.05 0.04 11 60% 60%SoundAbsorbing 吸声系数为0.6的理想表面材料 0.60 0.60 0.60 0.60 0.60 0.60 0.60 12 6"FIBINSL FIBGLSFACEDWKRAFTPAPER6"THK 背贴6"厚玻璃纤维的牛皮纸板 0.71 0.99 0.85 0.61 0.41 0.26 0.20 13 70% 70%SoundAbsorbing 吸声系数为0.7的理想表面材料 0.70 0.70 0.70 0.70 0.70 0.70 0.70 14 80% 80%SoundAbsorbing 吸声系数为0.8的理想表面材料 0.80 0.80 0.80 0.80 0.80 0.80 0.80 15 90% 90%SoundAbsorbing 吸声系数为0.9的理想表面材料 0.90 0.90 0.90 0.90 0.90 0.90 0.90 16 ABBFUSOR RPGFABRICWRAPABS/DIFFPANEL RPG织物包裹的ABS扩散板 0.82 0.90 0.99 0.99 0.99 0.99 0.99 序号 吸声材料名称 材料英文说明 材料中文说明 在下列频率下的吸声系数（f:Hz）
教室声场计算机模拟分析
教室声场计算机模拟分析摘要本文利用EASE软件，建立某大学1#教学楼的101教室的声场模型，通过分析混响时间等声学指标，结果表明教室在满场情况下其混响时间有一定程度的减小，各个参量均与听音者在教室内的位置有关。
对各个频率的混响时间进行分析发现了阶梯教室室内的主要音质缺陷，为以后阶梯教室的音质改造和试验研究奠定了基础。
关键词EASE软件；混响时间；阶梯教室；音质评价1 概述准确预测房间的声学参数一直以来都是声学设计者的目的，声学模拟软件可以预测厅堂声学特性，评估和调整声学设计方案，因此，计算机声学辅助设计已成为当前声学领域的一种趋势[1]。
在教室声学方面，由于EASE软件在电声和建声相结合方面的优势，它被较多的应用于教室声学的计算模拟。
EASE是为声学工程师设计的计算机模拟软件，自从90年代被德国ADA声学设计公司开发以来，已经在许多国家被注册使用。
其主要功能为：扩声（特别是扬声器布置的方案设计）和建声的计算机辅助设计[1-2]。
2 多媒体阶梯教室的模拟2.1 1#101多媒体阶梯教室的基本情况本文以某大学1#教学楼的101阶梯教室为研究对象介绍EASE声学软件在教室声环境研究中的应用[2]。
101阶梯教室位于1#教学楼的东南角，其南面距体育场大概有10m的距离。
该教室平面形式为递增的长方形，其前部宽为12m，后部宽为12.8m，长为15.8m，教室前部净高为4.3m，后随台阶逐渐减小，有七个台阶，每个台阶高为0.12m，教室后部高为3.46m。
地面面积约为195.9m2，其中有126个座位，所占面积约为66.2m2，容积约为777.1m3。
2.2 教室的声场模型的建立首先我们对101教室进行了现场实测，得到建模所需的数据，然后针对教室声场的音质特点，进行实例建模得到三维立体模型。
如下图所示：其中绿色为听众区，红色座椅为试听位置，蓝色为扬声器，粉色为窗户，淡紫色为座席区，黑色为门，亮灰色为讲台和黑板。
计算机声学设计软件_EASE_隋星
和实际厅堂中测量得到的脉冲图在同一窗口中的比
较， 蓝色的脉冲是实际测量得到的， 红色的脉冲是在
EASE 中通过运算得到的模拟脉冲。 由于比较是在同
一窗口中显示，所以有很强的直观性。 EASE 软件是目
前世界上最好的声学设计软件之一， 要得到其具有参
考价值的模拟结果，需要将声场的几何数据、吸声参量
等准确输入，同时还要对 EASE 进行正确使用。
研究， 只需几百条声线以及低反射次数的设定 （一般 3~5 次），就可快速进行对声线反射方式的研究。 声探 测功能是 EASE JR 所不具备的，声探测功能是研究对 于 1 个 特 定 目 标 的 声 线 撞 击 （Impact），声 线 撞 击 与 声 线跟踪的区别在于声线撞击是研究撞击特定目标的声 线， 这个特定目标确切说是指在听声者周围直径 1 m 的球。 如要查看声线跟踪， 则需生成声线跟踪文件 （Trace File）；如需进行声探测，则需生成声线撞击文件 （Impact File）。 生成声线撞击文件需要更大量的声线以 及更高次的声反射，以形成声撞击，超过 95%的声撞击 发生率是好的。 如果说声线跟踪对于声线反射方式的 研究还显粗糙， 那么对于研究经过多次反射和能量损 失最后到达设定听声点的声线特性， 则需要更具体细 致的研究并且可用来进行试听（Auralization）。 那么怎 样采用声线跟踪和声探测解决实际工程中什么问题 呢？ 下举 1 例：给声源设定 200 万条声线，每条声线设 定 20 次反射， 形成声撞击率为 98%的声反射序列图 （如图 7 所示）， 当发现在声反射序列图中有异乎寻常 的脉冲突出时，说明声场中有回声存在，然后在观察项 目视窗（View Project Window）中（如图 8 所示），查看该 脉冲的声反射路线以找到产生回声的地方， 以便进行 适当的吸声补救。
EASE资料
工程方案设计为了达到并超过相关国家标准的技术指标，我们借助先进的计算机声场模拟软件EASE 4.1根据厅堂的实际尺寸对音响系统的扩声效果进行了模拟计算。
EASE4.1声场模拟软件是由德国SDA声学设计公司研制开发的，已经得到广泛推广和应用。
EASE声学模拟软件可调用（借助）AUTOCAD建立三维空间模型，进行设计、编辑和方案修改；利用其内置的可听化模拟软件模块，使用模拟计算的脉冲响应与音乐信号，通过外耳传输函数，使设计师能够听到实际的音响效果，以便修改。
根据多功能厅的实际使用功能需要，结合我们在多功能厅音响系统方面的丰富升级经验以及参考了EASE4.1声场模拟软件的计算结果。
我们选用了美国C-MARK音箱作为主要设备。
EASE图多功能厅三维效果图这是一个与实体相符的模型具有实际的参考意义多功能厅平面图多功能厅侧面图多功能厅剖面图多功能厅声线覆盖图此图显示了音箱的能量指向的主要覆盖面积多功能厅三维声线覆盖图此图从三维显示了音箱的能量指向的主要覆盖面积多功能厅声学效果图此图可让你感觉一个实体的厅堂及音箱摆放位置多功能厅室声学内视效果图此图从内部让你感觉一个实体的厅堂及音箱摆放位置多功能厅在500Hz时声压图此图可让你直观的知道声压级是否达到指标，在这里厅堂的大部分面积声压级达到102dB完全达到国家一级标准.多功能厅在1000Hz时声压图此图可让你直观的知道声压级是否达到指标，在这里厅堂的大部分面积声压级达到99dB完全达到国家一级标准.多功能厅在2000Hz时声压图此图可让你直观的知道声压级是否达到指标，在这里厅堂的大部分面积声压级达到96dB完全达到国家一级标准.多功能厅在4000Hz时声压图此图可让你直观的知道声压级是否达到指标，在这里厅堂的大部分面积声压级达到95dB完全达到国家一级标准.经过计算机对各项指标的测算，结果都表明应用美国C-MARK音箱能达到国家标准，这样对声音的高品质有了客观科学的保障。
AR蹦床EASE分析结果
声学模拟软件—EASE声学分析报告计算机模拟是现代扩声系统设计的重要手段，为了保证该房间的扩声效果，需要对声学设计方案进行全面地计算机声场模拟分析，验证声场设计是否达到预期指标。
我们采用目前国际通用的电声系统模拟软件EASE4.3，其主要功能是对封闭大型空间或者敞开空间以及半闭空间的各种声学行为加以模拟，它能够较准确地模拟出加入扬声器后各项声学特性指标。
该系统已经广泛应用于体育场馆，剧场剧院、演播室等扩声系统设计中。
它通过针对厅堂的建筑设计，建立与施工图纸精确度相同的三维立体模型，在软件中输入各种扬声器参数，确定扬声器的安装位置，通过计算机运算，十分准确的仿真出扩声声场分布和声学参数，预测声场效果。
通过模拟分析，验证和优化设计方案，达到最终的设计目标。
EASE软件可以准确地预测声场分布、直达声声场分布、快速语言传递指数STIPA，辅音损失度%ALcons等。
厅堂扩声系统由扩声设备和声场组成。
不同功能的厅堂扩声系统，国家设计规范都有相应的声学特性指标要求，要满足这些设计要求，传统的做法是采用经典的声学公式（建筑声学、电声学）对厅堂进行计算。
进行这样的计算工作量大，而且准确度小。
采用声学模拟设计软件，用计算机辅助设计的方法完成这一工作，能够达到事半功倍的效果，厅堂扩声系统应达到与其功能相当的厅堂扩声系统的声学特性指标。
在进行工程的深化设计时，需提供图文并茂的厅堂扩声系统工程专业设计方案。
除了电声系统设备组成设计外，还包括用声学模拟软件进行设计，提供厅堂建筑模型图、混响时间与频率关系曲线图、辅音清晰度损失率分布曲线图、快速语言传递指数分布曲线图、听音面7个频率下的声压级分布图等。
以便预计本工程达到相应声学指标的情况，对工程调试进行指导。
自20世纪70年代以来国际上一些著名的公司相继开发声学（建声、电声）模拟计算机辅助设计软件。
这些软件在不同的时期适应不同品牌扬声器数据库。
随着计算机硬件和操作系统的逐渐升级，其软件计算方法也在不断完善，建模方法和计算结果的显示也在不断地完善。
EASE专业建筑声学设计软件说明书Part0
1EASE Software © Copyright ADA (Acoustic Design Ahnert), GermanyTutorialRH 545 4/16/04 Version 4.1.0.6Thanks are due to the following individuals whoprepared this manual.Carl DorwaldtofRenkus-Heinz, Inc.Foothill Ranch, CaliforniaUSAWith the able assistance ofDr. Wolfgang AhnertStefan FeistelDr. Waldemar RichertFrank SiegmannKaren IrmscherEmad El-SaghirBruce OlsonofADA (Acoustic Design Ahnert)Berlin, Germany2Licensing AgreementThe software and/or databases described in this document are furnished under a license agreement or nondisclosure agreement. No part of this document and/or database may be reproduced or transmit-ted in any form or by any means, electronic or mechanical, including photocopying, recording, or information storage and retrieval systems, for any purpose other than the purchaser’s personal use, without the written permission of Renkus-Heinz, Inc. (hereinafter referred to as Renkus-Heinz.) Limited WarrantyRenkus-Heinz and ADA have made every effort to ensure the accuracy of this manual and make no warranties with respect to this documentation and disclaim any implied warranties of merchantabil-ity or fitness for a particular purpose. Information in this document is subject to change without notice. Renkus-Heinz and ADA make no warranties that such files and features as mentioned in this documentation exist on the distribution disks or as part of the materials distributed.The Loudspeaker DatabaseThe loudspeaker database supplied with your copy of EASE contains data from numerous loud-speaker manufacturers in addition to data from Renkus-Heinz. Renkus-Heinz and ADA have given all loudspeaker manufacturers equal opportunity and instructions for supplying loudspeaker data. If you require loudspeaker data not currently supplied with EASE, or if you have problems with the supplied data, please contact that manufacturer directly. As a matter of policy, Renkus-Heinz and ADA include data as supplied by the loudspeaker manufacturers and assume no responsibility for its accuracy.TrademarksEASE, EASE JR, EARS, AURA and ADA are registered trademarks of Acoustic Design Ahnert.Windows 98, 2000, XP & NT, DOS and DirectX are registered trademarks of Microsoft.AutoCAD is a registered trademark of Autodesk.LAKE Convolution is a registered trademark of Lake Technology Limited.CADP is a registered trademark of JBL Professional.VMAx Virtual Home Theater is a registered trademark of Harman International.CopyrightsRenkus-Heinz Inc. 2004. All rights reserved. Printed in the United States of AmericaADA (Acoustic Design Ahnert) Berlin, Germany34Processor RAMDisk Space Req. (for program)Disk Space Req.(for Databases)Graphics Screen Resolution Video Driver Sound CardEASE EASE JR300 MHz 128 MB 70 MB 500 MB 256 Colors 800 x 600Open GL**compatible 16-Bit StereoEARS EARS RT EASE EASE JR EARS EARS RT MINIMUMRECOMMENDED300 MHz 12870 MB 500 MB 256 Colors 800 x 600Open GL**compatible 16-Bit Stereo***Maximum Available Maximum Available 70 MB 500 MB True Colors (24-Bit)1024 x 768Open GL**compatible 16-Bit Stereo.Maximum Available Maximum Available 70 MB 500 MBTrue Colors (24-Bit)1024 x 768Open GL**compatible 16-Bit Stereo***OPERATING SYSTENSEASE 4.1, EARS 4.1, EARS RT 4.1 and AURA are designed to run on Windows 98, Windows 2000, Win-dows NT* and Windows XP. Windows 95 is not supported and Windows ME (Millennium Edition) is not recommended.EASE 4.1, EARS 4.1, EARS RT 4.1 and AURA will also run on Mac’s using Virtual PC software.* NT 4.0 must have Service Pack 4, version 4 installedNOTES** To use EASE & EASE JR, the OpenGL driver provided by the 3D graphics card must have the following characteristics:1. Full support of Open GL: Version 1.1 or later.2. An OpenGL Installable Client Driver (ICD): The 3D graphics card must provide a full ICD in its OpenGL driver software. The “miniGL” drivers provided by some 3D graphics cards are not adequate for EASE &EASE JR.*** DirectX7 or higher must be installed to use the Lake Convolution software. A full duplex sound card is needed to fully utilize EASE RT.Equipment RequirementsAURA 300 MHz Maximum Available 70 MB 500 MB 256 Colors 800 x 600Open GL**compatible 16-Bit StereoAURA Maximum Available Maximum Available 70 MB 500 MBTrue Colors (24-Bit)1024 X 768Open GL**compatible 16-Bit StereoProgram SupportIf you have a question about EASE / EASE JR / EARS / AURA or run into a problem and cannot find the answer in this manual or on our website, call our Technical Support staff. Before you call, please:Review the subject in this manual.Have your User ID number handy and know what version number you are using. You will find the User ID number on the rear of your EASE & EASE Guard CD jewel cases. The version number can be found in the About screen under the Help pull down menu.Have a clear description of the problem and the wording of any error messages.Call from a telephone located near your computer and have your computer running, so you can refer to the screen during the call.EASE / EARS/ AURA TECHNICAL SUPPORTPhone: 949 588 9997Monday through Friday between 8:00 AM and 5:00 PM Pacific Time.Ask for:Carl Dorwaldt (Extension 108)Jim Mobley (Extension 104)Jonas Domkus (Extension 135)E-mailCarl@Jim@Jonas@IR InfraRed Technical SupportIf you have a problem relating to the IR InfraRed Simulation Module,call Bruce Olson:Phone: 763-493-5835Monday through Friday between 8:30 AM and 5:00 PM Central TimeE-mail: bcolson@5TABLE OF CONTENTSGENERAL INFORMATIONLicensing & Trademark Information3Equipment Requirements4Program Support5Table of Contents6Installation Instructions11Registration Instructions13Online Licensing15Offline Licensing16Importing/Exporting License Keys17Termination Keys18 Protect License19Program Updates19Loudspeaker Database Updates19Recovering Lost License Keys19 PART 1. OVERVIEWGeneral Information22Program Structure23Brief Recap of Key Commands24Starting EASE26Option Settings29 Opening a Project31Project Data Files32 Project Options34Viewing a Project35Using The Walker39Calculation Setup Menus40Calculations Menu44Edit Project Menu Tool Bars46Vision52 PART 2. CONSTRUCTING A MODELNaming a Project57Loading Loudspeakers and Wall Materials61Printing Wall Material DataBase62Room Modeling Techniques63Room Entry666Edit Project Options68Entering V ertices71Entering Faces74Making Steps77Adding Seating Areas (Coat Feature)81Closing a Room83Reverb Times83Adding Audience Areas84Adding Listener Seats85Adding Loudspeakers86Setting Loudspeakers Power Levels87 Aiming Loudspeakers90Distance Calculations97Adding Edges98Adding Windows98Using Extrude99 Adding / Changing Face Colors100Using Vision103Making Global Material Changes109Finding And Fixing Holes110Finding Unknown Dimensions114 PART 3. ALTERNATE ROOM INPUT METHODSCreate Shape Examples120Creating Curved Surfaces124Using Extrude126Creating Rooms with Curved Ceilings and Walls128Cutting Faces into Two Faces (Using Fixed Cut)135Adding Interior Shapes137Using Extrude Faces139 Using Mirror Insertion140Using Sequence126Using Insert Audience Area147145 Adding Listener Seat Grids148Adding Loudspeaker Grids (distributed Loudspeaker Systems)149Adding Steps / Bleachers151Using Prototype Rooms154Prototype Room Models157Using Objects1687PART 4. CLUSTER BUILDINGUsing Main Speaker Base178Using Edit Project187Using Cluster Objects189Creating CASE Drawings190Creating New Loudspeaker Files193PART 5. USING OPTIMIZE RTOptimize RT196 PART 6. ROOM INVESTIGATIONSArea Mapping202Moving Audience Areas203 Setup Options / Direct Sound203Display Resolution208All Mapping210View Calculations Window210Displays Types:Direct SPL214ALcons / Articulation Loss215RASTI216C Measurements217Pressure Levels219Sum / Total SPL219D/R Ratio219Critical Distance220Arrival Time220Lspk Overlap221ITD Gap223Aiming222Local Decay Time224 Standard Mapping With Reflections226Room Mapping227Auralize Direct Sound228Local Ray Tracing230 PART 7. Import/Export Module - - DXF Import and ExportIntroduction234Import EASE 2.1234Export EASE 3.0 Project235Import CADP2235Import ASC112368Import ASCII (EASE 2.1)234Export ASCII234DXF File Transfer235Exporting DXF Files from EASE235Importing EASE DXF Files into AutoCAD236Importing AutoCAD DXF Files into EASE239Helpful Hints for non-AutoCAD users244 PART 8. VISIONIntroduction248Creating a New Light Source (Light Source Editor)248Creating a New Texture (Texture Editor)252Assigning Textures to the Model256Using EASE Vision258 PART 9. ADVANCED ACOUSTICAL INVESTIGATIONSRay Tracing264View Trace File269Movies274 Ray Tracing Impacts275View Impact File280Probe280Display Types281Schroeder RT287 Mirror Image Impacts292Split Impact File293Update Impact File293 PART 10. AURALIZATIONAuralization296Step 1. Creating the Reflectogram297Step 2. Adding a Tail to the Reflectogram299Using Add Random Tail299Using Predicted Impacts301 Step 3. Combining the Reflectogram with theCharacteristics of Hearing304Step 4. The Final Convolution3069EARS Options310EARS RT Real Time Auralization315 PART 11. AURAConstructing an Aura Room Model320AURA Introduction323AURA Mapping326Echograms332EDT (Early Decay Time)333T Measures334Definition335Articulation Loss (ALcons)336Speech Transmission Index (STI)337C Measures337Center Time338LF & LFC Measures339Sound Strength340Echo Speech340Echo Music341 Echograms341Echo Speech341Echo Music341 Histograms342Particle Loss Method344AURA Response347AURA Improvements353Scattering Wizard353PART 12. IR INFRAREDIR Infrared358Inserting Emitters359Calculations361Creating New IR Devices366Radiators367Modulators370PART 13. INDEX37310INSTALLATION INSTRUCTIONSImportant: Before you attempt to install EASE 4.1 on your computer, make sure you have read the equipment requirements on page 4 of this manual and have sufficient memory and hard disk space.The program and data bases will occupy almost 600 MB of hard disk space ( or more if you are not running a FAT32 system). Windows also likes to have open hard disk space at least equal to the amount of RAM for use as virtual memory. Thus, if you have 128 MB of RAM you need at least 728 MB of hard disk space just to load and operate the program.This assumes your machine is set up for FAT32 operation. If it isn't, your hard disk space requirements almost double! FAT32 (for NT systems NTFS) is an enhancement of the File Allocation Table (FAT and FAT16) file system format. It stores data much more efficiently and speeds up operation.You can check your machine's setup by selecting the hard drive (s) with your right mouse button and then selecting Properties from the Option menu. If your machine is set up for FAT32 operation, the Properties' window will show FAT32 as the File System. If you are running FAT16, either FAT or FAT16 will be listed as the File System. If you are not running FAT32, you most likely will be able to upgrade to FAT32. This change should be made on the drive (s) you intend to use for EASE 4.0 and/ or the data files. Select Program/Accessories/System Tools/Drive Converter (FAT32) and them follow the prompts.Note 1: If you have EASE 3.0 installed on your machine, you do not need to uninstall it before installing EASE 4.1. The two programs are compatible and can run side by side on the same machine. You will be asked by the 4.1 install program if you want to uninstall EASE 3.0, but you do not have to.Note 2: If you have EASE 4.0 installed on your machine, you do not need to uninstall 4.0 before installing 4.1. The 4.1 Install routine will automatically ask if you want to uninstall the previous version. Answer Yes to both uninstall prompts. You will also be asked about removing a number of “Shared Files.”’ We recommend answering Yes to All. Note that installing the newer version will not affect either your License Key or your project files.The Uninstall routine will not remove the EASE 4.0 Data folder. However, the Install routine will overwrite old data with new data during the installation. To save the old data files intact, rename them before beginning the installation. For example, change the existing EASE40Data folder name to EASE40DataOld.Note 3: If you are running Windows 2000, make sure you have local system Administrative Access Permissions to the EASE 4.0 Install folder, Windows System folder and System Registry before beginning the installation.EASE 4.1 requires that users be assigned either Power User or Administrative Permissions when Windows 2000 is used. Failure to assign these Permissions causes EASE 4.0 to perform incorrectly. Refer to your Windows 2000 Help system for information about assigning Administrative Permissions.Note 4: If you are using a Virus protection program, you should disable it before beginning the installation.Important: A complete EASE 4.1 installation is a 3-step procedure. First, you install the EASE program (from the EASE 4.1 Program CD), then you install EASE Guard (from the EASE Guard License Control CD) and then you obtain a License Key which unlocks the program.To install EASE 4.1:1.Insert the EASE 4.1 CD-ROM into your CD drive. The Install program should open automatically.If it doesn’t, proceed to steps 2 and 3.2.From the Start menu select Settings, then Control Panel and Add/Remove Programs.3.Click on Install and follow the prompts.Note: If for some reason Windows can not locate the EASE setup program, click on the Browse button to manually locate the Setup program on the EASE 4.1 CD. Double-click on the Setup.exe file to launch the Setup program.4.During the installation routine, you will be given 3 installation options:Complete will install the Program and the Speaker, Material and Example Databases plusadditional (Textures, Lights and Infrared devices) databases. You will be given theopportunity to select the location for the Program and the Databases. Note that the Program and the Databases may be stored on different drives. We recommend installing both on your C drive.You will also be given the chance to select the Material databases you want to install andwhich manufacturer's Loudspeaker Files will be installed.Program Only will install just the program; no databasesData Only will install only the Databases you select.The installation program will install the EASE Program and Databases and place an EASE shortcut icon on your desktop.NOTE: You will not be able to use the program, except in the Demo mode, until you have also installed the EASE Guard License Control program and obtained a License Key.Your EASE License allows you to install and run the program simultaneously on up to 5 machines. Use of the program is controlled by License Keys issued by ADA, with each EASE License entitling you to 5 License Keys.If you want to use the program on more than 5 machines, you must purchase additional Licenses. Each additional License allows you to use the program on 5 additional machines.License Keys are managed and controlled by the EASE Guard License Control program.Key elements of the EASE Guard program are the:USER ID NumberThe USER ID number is the identification number assigned to your company at the time you purchased the License. It includes details on any previous EASE licenses you owned and identifies what version of EASE you purchased; for example EASE or EASE JR. You cannot obtain a License Key without it. You will find your USER ID Number on the rear of the EASE and EASE Guard CD jewel cases.Reference FileThe Reference File (sometimes called Reference Key) is a file (an .erf, Ease Reference File) generated by the EASE Guard program and placed in the EaseLicenseFiles folder on your computer. It identifies your computer and its operating system in the EASE Guard License Control program and will be linked to your License Key. This file is different for each computer and, if you use the program on more than one computer, each will have its own unique Reference File.Note that any change in your computer’s operating system will be detected by EASE Guard, the link between your computer and the License Key will be broken and the program will revert to the Demo mode. You will have lost your License Key and will not be able to run EASE until you have obtained a replacement License Key from ADA.License FileThe License File (sometimes called License Key) is a file (an .elf Ease License File) generated by ADA. It is linked to your USER ID Number and to your computer’s Reference File and unlocks the specific EASE version you purchased.REGISTRATION INSTRUCTIONS1. Insert the EASE Guard CD-ROM into your CD drive. The Install program should openautomatically If it doesn’t, proceed to steps 2 and 3.2.From the Start menu select Settings, then Control Panel and Add/Remove Programs.3.Click on Install and follow the prompts.Note: If for some reason Windows can not locate the EASE Guard setup program, click on the browse button to manually locate the Setup program on the EASE Guard CD.Double-click on the Setup.exe file to launch the Setup program.4. As soon as the EASE Guard installation is completed, start EASE by double clicking on the EASE Icon.5.Then double click on the Register Icon in the EASE 4.0 desktop window or open theHelp pull down menu and select Register.6.This will open the EASE Registration prompt shown below.7.An affirmative answer will close EASE, launch the EASE Guard program and open thescreen shown below.EASE 4.1 offers 2 ways for you to obtain a License Key, Online and by File.The Online method is by far the fastest and the easiest, if you have access to the Web from your computer. It is the method recommended for everyone who has direct Web access from theircomputer. The File method is for those who do not have access to the Web from their computer. ONLINE LICENSING1.If you have automatic direct access to the Web, make sure that Online Licencing is selected andthen click on Download License.This will connect you to the EASE License website on the ADA FTP server, send your computer’s reference information to the website and, if everything checks out, generate your License Key and download and install it on your computer. The entire operation is automatic and takes only a few seconds. It’s that simple.Note that the Licence Status fields will now show the Version you have installed (for example, EASE or EASE JR), your company’s name and the number of Licences (License Keys) available on your computer. It will read 1, since you downloaded only 1 License Key.Note 1: If you do not have automatic access to the Web and must “log on” to gain access, be sure to “log on” to the Web before starting the Online Licensing procedure.Note 2: If you receive an Error message at this point and are unable to download a License Key, it’s probably because your “Firewall” is blocking it. Try turning off the Firewall or use your network browser to connect to a website and then try again. If you still are unable to download a License Key, use the Offline Licensing method to obtain a key.2.If at this point you press the Info button, it will show that you still have four Licenses available todownload. Do not download them unless you have a specific need for them. They are safer stored on the ADA FTP server than they would be stored on your computer.Downloading and storing additional License Keys on your computer is not recommended.Spare Keys are far safer stored on the ADA FTP server.3.If you have a second computer with Web access, you can download a License Key to it byfollowing the same procedure you used with the first computer.Other users within your company can, of course, obtain License Keys for their computers byfollowing the same procedure.4.If you have a second computer that doesn’t have access to the Web, you can download a secondLicense File (Key) onto your computer and then Export it to the computer that doesn’t have Web access. Exporting License Keys will be covered later in this section.Note 1: The Export procedure should be used only for computers that do not have Web access.The automated download procedure eliminates any human errors and is far more fool proof. It is recommended for any computer with Web access.OFFLINE LICENSING ( LICENSING BY FILE)1.If you do not have access to the Web, you will need to create a Reference File and send it to ADAby e-mail or regular mail. ADA will then generate the License File and return it to you in the same fashion.2.For Offline Licensing, click on the Licencing By File button. This will open the screen shownbelow.3.Click on Create Reference File to open a Save File window. Use the Save In window to select thestorage location for the Reference File; for example, Desktop or My Documents.4.Copy the Reference File onto a floppy and then either mail it to ADA or use a computer with e-mail capabilities to e-mail it to ADA.ADA Acoustic Design AhnertArkonastrasse 45-49D-13189 Berlin, GermanyFax: + 49 30 4670 9220E-mail: licence@ada-acousticdesign.de5. ADA will then return a License File to you.6.When you receive your Licence File, copy it onto your computer. Then open EASE and return tothe Licencing By File window.7.Select Install Licence, Browse to the Licence File and click on Open to install the License Key. Exporting License Keys (OffLine Licensing)The Import/Export folder in the Licencing By File window allows you to import or export License Keys from one computer to another computer.1. The first step in exporting a License Key to another computer, to your laptop for example, is to load EASE and EASE Guard onto that computer (EASE refers to it as the Target computer). Then open EASE on the Target computer and go to Register/Licenceing By File and Import/Export. Next, click on Create Reference File and follow the prompts to save it to a logical location, such as a floppy disk. Then, move it to your computer.2 The second step is to open EASE on your computer, the one having a valid license (EASE refers to it as the Source computer), and open the Import/Export section of the Licenceing By File window. 3. Next, select Export Licence. This will open an Open File Window. Browse to the Reference File you just moved to this computer, select it and then click on the Open button. This will generate a Licence Key export file and open a Save File window. Enter a logical location for the file and then click on Save.4. The fourth and final step is to move this file to the Target computer and then Import it into EASE. Select Import Licence from the Import/Export folder under the Register/Licensing By File window. This will open the Open File window, browse to the License Key file, select it and then clickon Open. This will install the License Key and you’ll be up and running.TERMINATING LICENSE KEYS (Offline Licensing)The proper procedure to follow if you decide to upgrade your old computer or replace it a new one is to officially Terminate your computer’s License Key. This protects you from losing your License Key in the transition. Remember, any change in your computer’s operating system will be detected by EASE Guard and the link between your computer and the License Key will be broken.To Terminate your computer’s License Key, select the Terminate folder under the Register/Licens-ing By File window. Then press the Terminate Licence button. This will open a Save File window.Enter a logical location for the file and then click on Save. A Send E-mail Now prompt will appear. If you have direct access to the Web, clicking on Yes will send the Termination file to ADA. If you don’t have direct access, Save the file and then either mail it to ADA or use a computer that has E-mail capabilities to E-Mail it to ADA.Note: Online users do not need to “Terminate” their License Keys. Instead, they can simply Upload them to the ADA website and then Download them again after they have made the computer changes.The Remove License button is used only to correct licensing problems resulting from software or hardware errors. Don’t use it unless you are having problems and ADA tells you to use it.Don’t use it without their knowledge and consent, as it will remove all licensing information from your computer and complicate the task of recovering the lost License Key. PROTECT LICENCEFor those who want to maintain tight control over their EASE License Keys, EASE 4.1 includes a Protect Licence feature. It is accessible under the Help pull down menu. Protect Licence, when activated, removes the EASE Guard program from that computer making it impossible for the user to access the EASE website to download additional License Keys.PROGRAM UPDATESThe latest EASE 4.1 program updates are also stored on the ADA FTP server and can be easily downloaded by any Licensed user having direct access to the Web. Open the Help pull down menu and select EASE Update. This will automatically connect you to the ADA FTP server and, if you are not running the latest version, automatically update your program to the latest version. SPEAKER DATABASE UPDATESLoudspeaker database updates are also stored on the EASE website and can be easily downloaded by any Licensed user having access to the web. Open the Help pull down menu and select Speaker Base Update. This will automatically connect you to the EASE Website and allow you to download any new loudspeaker Databases you want.RECOVERING LOST LICENSE KEYSAt some point in time, through no fault of your own, you may lose a License Key. Your hard drive will crash and burn and you will lose everything on it, or someone unfamiliar with EASE will decide it’s time to reformat your computer without your knowledge, or some other unforeseen event will occur.When you lose a License Key, it is imperative that you immediately get in touch with ADA at “licence@ada-acousticdesign.de” and let them know what happened. They are the only one who can issue a replacement for the lost License Key.To assist you in this process, EASE includes a License Information collection tool. It gathers all of your computer’s Licensing Files and compresses them into a single Zip file that you can either send to ADA for archive purposes or store on a floppy in a safe spot.We strongly recommend that you create this archive file as soon as you have obtained your License Key and update it whenever you make any alterations to your computer.To create this archive, go to the Help pull down menu and select Create Status Report. This will open the screen shown below.As you can see, it gives you the opportunity to just save the file on your hard drive or to also send it to ADA. The choice is yours. No matter which you choose, we suggest that you immediately use Windows to copy this file onto a Floppy and then store the Floppy in a safe place.Then, if you should ever lose your License Key, it is an easy matter to attach it to an E-mail to ADA. Your E-Mail should explain what happened and request a replacement License Key. The Ease40Info file will give them all the information they need.The correct E-mail address for ADA is licence@ada-acousticdesign.de.ADA will get back to you as quickly as possible.。
ease功能
ease软件 4.0版的特点和应用[摘要] 本文简述了声学模拟软件ease的发展历史，基本结构，功能,使用方法及可靠性。
特别介绍了ease4.0版相对于ease3.0版的改进，及ease由扩声系统设计软件向声学设计软件方向发展的趋势，最后给出该软件在工程上的一个应用实例。
[关键词] 声学设计模拟软件 ease[abstract][key words]1 引言ease是the enhanced acoustic simulator for engineers的缩写，意为增强的工程师声学模拟软件。
作为优秀的商品化扩声建声设计软件，ease使建筑师,音响工程师,声学顾问和建筑商可以预计建筑的声学特性和扩声系统（特别是扬声器布置方案设计）特性。
ease最早是在1990年，ada(ahnert声学设计公司)在montreux举行的88届aes大会上介绍的。
99年，该公司发布了esae3.0版。
此后不久，jbl公司便决定停止开发他们自己的声学设计软件cadp2而转向使用ease。
99年年末，ada公司开始致力于ease4.0的开发，并于2002年八月正式发布ease4.0及相关的使用手册和指南，这是ease目前的最新版。
本文主要介绍ease软件的基本结构，特点和使用，特别是ease4.0的相对于3.0版所作的改进。
2 ease4.0简介2．1 ease4.0结构简介ease4.0可以在window98, window2000, window nt和window xp的环境运行，不支持window95,也不推荐windowsme。
软件混合使用了声线跟踪法和声像法，结合了前者模拟速度快而后者精度高的特点。
由于ease4.0在出售时封装的不同，在主程序之外，会包括不同的计算模块，这些计算模块是ada向别的公司或大学购买的。
完整的计算模块包括aura, 房间声学分析软件（基于caesar算法）； ears 4.0 双耳试听模块4.0版，包含vmax ?transaural stereo imaging software； ears rt 4.0双耳试听模块4.0版，包括lake?convolution and vmax ?transaural stereo imaging software 。
计算机声学模拟分析(声学建模)
计算机声学模拟分析(声学建模)1.计算机模拟声场分析说明为了确保多功能厅会议扩声系统的设计符合实际效果，我们采用了当代先进的计算机模拟技术。
我们的技术人员进行了现场勘测并建立了计算机建筑模型（与现场比例为1：1），以验证方案设计的声场效果和现场施工、安装、调试情况的正确性。
这也为后期我们的测试提供了良好的参考依据，以确保达到预期效果。
我们使用声场分析软件EASE，模拟验算的声学参数包括声场声压的分布、声场清晰度的计算。
其中，声场声压的分布分析计算了声场的直达声、均匀度、声学射线跟踪和分布。
声场清晰度的计算分析了声音的清晰度，包括快速语言传输指数（STI）和辅音清晰度损失率（ALC）。
2.分析依据多功能厅的参与声学计算面积为2062平方米，声容积为3417立方米。
多功能厅扩声系统属于厅堂扩声，声学特性指标采用广播电影电视部标准《厅堂扩声系统设计规范》-2006标准特性。
在评估声学特性指标时，我们采用了快速语言传输指数（RASTI）和辅音清晰度损失率（ALC）。
RASTI是语言传输指数法（STI法）在某些条件下的一种简化形式，用于测定与可读懂度有关的语言传输质量。
我们使用普茨长公式，根据不同范围的参考值评价RASTI。
ALC是一种度量语言明晰度的方法，我们使用普茨长公式，根据不同范围的参考值评价ALC。
本文介绍了多功能厅的声学数据分析，包括建筑模型图、音箱声向图、3dB覆盖图、声压图、直达声分析图、RASTI分析图、ALCons%分析图、RT60图、声学射线跟踪图、瀑布图、45度视角扬声器布置图、鸟瞰声向图、立体声向图、3dB线声场覆盖图等十种图形。
其中，主扩全频扬声器和辅助扬声器参与了声学计算，而低音扬声器和返听扬声器则未参与。
数据分析表明，不同频率下全场总声压级的范围和平均声压值均有所不同。
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声场分析
计算机模拟声场分析 2
1. EASE 4.3电脑设计系统简介 2
2. 分析依据: 2
3. 电视电话会议室声场分析 4
4. 电视电话会议室分析结果 11
5. 作战指挥室声场分析 12
6. 作战指挥室分析结果 19
计算机模拟声场分析
为使武警水电会场声学方案设计更好地符合实际的效果，运用当代先进的计算机模拟技术，根据实际尺寸建立计算机建筑模型，对方案设计的音响效果进行计算机模拟验证，以确认设计的合理性，以及能满足技术要求，达到预期效果。
设计运用的是著名的声场分析软件——EASE4.3。
1. EASE 4.3电脑设计系统简介
EASE（全称ELECHO ACOUSTIC SIMNLATOR FOR ENGINEER）是由德国人在九十年代中期开发的通用数据库，现已成为世界上最为广泛使用的声学设计软件。
EASE是采用计算机CAD技术进行模拟声场的模型建设、声学设计、声学计算与声学分析的综合设计软件。
我们现在使用的是EASE 4.3版本，主要用它进行模拟验算的声学参数有：
• 声场声压的分布——对声场的均匀度、频率响应及分布进行分析
计算
• 声场清晰度的计算——对声音清晰度的分析计算
2. 分析依据:
武警水电电视电话会议室以及作战指挥室扩声系统属厅堂扩声。
声学特性指标采用广播电影电视部部分标准GYJ25-86<<厅堂电声系统声学特性指标>>中语言和音乐兼用的电声系统二级（语言扩声一级）声学特性指标。
RASTI----快速语言传输指数（rapid speech transmission index）是语言传输指数法（STI法）在某些条件下的一种简化形式，用来测定与可懂度有关的语言传输质量。
在EASE中0.75～1（含0.75）为优,0.6～0.75（含0.6）为良好,0.45～0.6（含0.6）为一般,0.3～0.45（含0.3）为较差,小于0.3为差.一般大于0.5为好.
ALC-----辅音清晰度损失百分比（%ALCONS）是一种语言可懂度的度量方法。
在EASE中0%～3.3%为优,3.3%～6.6%为良好,6.6%～14.7%为一般,14.7%～33.6%为较差,33.6%以上为差.一般小于10%为好.
说明：以下六种图，前两种图表示设计者的音箱布置方式，后三种图是计算机模拟分析的结果。
设计选择的音箱型号是软件数据库所具备的，所以其模拟分析的结果是有一定参考价值的。
建筑模型图——表示音箱的设计布置方式；
音箱声向图——表示音箱声线主轴所指向的位置；
音箱3dB覆盖图------表示所用音箱在偏离声线主轴衰减3dB所覆盖的范围；
声场图------表示建筑环境各频率的声场分布,声场均匀度和最大声压级是否达到标准
3. 电视电话会议室声场分析
立体音箱布置图
正面声向图
立体声向图
3dB线声场覆盖图
250 HZ 声压图
500 HZ 声压图
1000 HZ 声压图
2000 HZ声压图
4000 HZ 声压图
6300 HZ 声压图
RASTI 2000HZ
Alcon% 1000HZ 4. 电视电话会议室分析结果
由声场分布图中统计的计算结果统计如下表：
250Hz 500Hz 1000Hz 2000Hz 4000Hz 6300Hz
107.2～113.5dB 105.2～
111.3dB
103.3～
110.0dB
102.9～
108.5 dB
101.3～
107.1dB
100～107.1dB
（1）最大声压级（空场稳态准峰值声压级）：
由统计表中可计算出，125~4000Hz范围内平均声压级为106.5dB,超过标准声压98dB。
（2）声场的不均度：
由统计表中可计算出，1000Hz<8dB；4000HZ<8dB。
（3）辅音损失率ALCONS%：1～1.06，属优秀范围。
（4） RaSTI值:0.94～1.0，属优秀范围。
由上述的分析计算结果可以看出，电视电话会议室主要声学特性指标已全面达到和超过国家语言兼音乐扩声一级标准所要求的指标参数。
5. 作战指挥室声场分析
立体音箱布置图
正面声向图
立体声向图
3dB线声场覆盖图
250 HZ 声压图
500 HZ 声压图
1000 HZ 声压图
2000 HZ声压图
4000 HZ 声压图
6300 HZ 声压图
RASTI 2000HZ
Alcon% 1000HZ 6. 作战指挥室分析结果
由声场分布图中统计的计算结果统计如下表：
（5）最大声压级（空场稳态准峰值声压级）：
由统计表中可计算出，125~4000Hz范围内平均声压级为106.3dB,超过标准声压98dB。
（6）声场的不均度：
由统计表中可计算出，1000Hz<8dB；4000HZ<8dB。
（7）辅音损失率ALCONS%：1～1.14，属优秀范围。
（8） RaSTI值:0.92～1.0，属优秀范围。
由上述的分析计算结果可以看出，作战指挥室主要声学特性指标已全面达到和超过国家语言兼音乐扩声一级标准所要求的指标参数。