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<br /> COMSOL<br /> www.comsol.com 2017<br /> NEWS<br /> SPECIAL EDITION ACOUSTICS<br /> CONTENTS<br /> Computational Acoustics<br /> Provides Early Insight and<br /> Predictive Ability in the<br /> Design Process<br /> When we discuss acoustics, the first images that might come to<br /> mind are of a loud subwoofer or a concert hall with all of its sound<br /> baffles. But there are many more acoustics applications that we come<br /> into contact with everyday. Acoustics is a multidisciplinary science<br /> requiring engineers to resort to all of their ingenuity and the most<br /> powerful mathematical modeling tools to create products that satisfy<br /> many customers’ requirements.<br /> This special edition of COMSOL News celebrates designers, engineers,<br /> and researchers working in the field of acoustics. As you will see by<br /> reading their stories, the <a title="COMSOL_News_2017_Acoustics page 1" href="https://secure.viewer.zmags.com/publication/394620a2?page=1"> COMSOL www.comsol.com </a> <a title="COMSOL_News_2017_Acoustics page 2" href="https://secure.viewer.zmags.com/publication/394620a2?page=2"> CONTENTS Computational Acoustics Provides Early</a> <a title="COMSOL_News_2017_Acoustics page 3" href="https://secure.viewer.zmags.com/publication/394620a2?page=3"> FEATURES 22 MULTIBODY-ACOUSTICS INTERACTION Mo</a> <a title="COMSOL_News_2017_Acoustics page 4" href="https://secure.viewer.zmags.com/publication/394620a2?page=4"> COMSOL MAKING THE CASE FOR ACOUSTIC MODELING AN</a> <a title="COMSOL_News_2017_Acoustics page 5" href="https://secure.viewer.zmags.com/publication/394620a2?page=5"> ACOUSTICS SIMULATION acoustics, ranging from in</a> <a title="COMSOL_News_2017_Acoustics page 6" href="https://secure.viewer.zmags.com/publication/394620a2?page=6"> HARMAN, FRANCE VIRTUALLY TUNING AN AUTOMOTIVE </a> <a title="COMSOL_News_2017_Acoustics page 7" href="https://secure.viewer.zmags.com/publication/394620a2?page=7"> VIRTUAL PRODUCT DEVELOPMENT FIGURE 3. HAR</a> <a title="COMSOL_News_2017_Acoustics page 8" href="https://secure.viewer.zmags.com/publication/394620a2?page=8"> VIRTUAL PRODUCT DEVELOPMENT correlation between</a> <a title="COMSOL_News_2017_Acoustics page 9" href="https://secure.viewer.zmags.com/publication/394620a2?page=9"> BRUEL & KJAER, DENMARK Precision Performance: </a> <a title="COMSOL_News_2017_Acoustics page 10" href="https://secure.viewer.zmags.com/publication/394620a2?page=10"> HIGH-PRECISION MICROPHONES we know that our mic</a> <a title="COMSOL_News_2017_Acoustics page 11" href="https://secure.viewer.zmags.com/publication/394620a2?page=11"> HIGH-PRECISION MICROPHONES “With simulation</a> <a title="COMSOL_News_2017_Acoustics page 12" href="https://secure.viewer.zmags.com/publication/394620a2?page=12"> NASA, USA MULTIPHYSICS SOFTWARE MODELS MEAN FL</a> <a title="COMSOL_News_2017_Acoustics page 13" href="https://secure.viewer.zmags.com/publication/394620a2?page=13"> COMBUSTION INSTABILITY Historic difficulties i</a> <a title="COMSOL_News_2017_Acoustics page 14" href="https://secure.viewer.zmags.com/publication/394620a2?page=14"> COMBUSTION INSTABILITY FIGURE 2. Sim</a> <a title="COMSOL_News_2017_Acoustics page 15" href="https://secure.viewer.zmags.com/publication/394620a2?page=15"> MAHINDRA, INDIA BEHIND THE</a> <a title="COMSOL_News_2017_Acoustics page 16" href="https://secure.viewer.zmags.com/publication/394620a2?page=16"> NVH PERFORMANCE One-third Octave Bands 5dBA </a> <a title="COMSOL_News_2017_Acoustics page 17" href="https://secure.viewer.zmags.com/publication/394620a2?page=17"> NVH PERFORMANCE low frequencies, or the ‘rumbli</a> <a title="COMSOL_News_2017_Acoustics page 18" href="https://secure.viewer.zmags.com/publication/394620a2?page=18"> FOOD PROCESSES CAOBRBNCERLCL ,USNWIVEEDRESNITY,</a> <a title="COMSOL_News_2017_Acoustics page 19" href="https://secure.viewer.zmags.com/publication/394620a2?page=19"> TRANSFORMER HUM FIGURE 1. Photo of t</a> <a title="COMSOL_News_2017_Acoustics page 20" href="https://secure.viewer.zmags.com/publication/394620a2?page=20"> TRANSFORMER HUM FIGURE 4. Left: COM</a> <a title="COMSOL_News_2017_Acoustics page 21" href="https://secure.viewer.zmags.com/publication/394620a2?page=21"> TRANSFORMER HUM FIGURE 6. Left: Si</a> <a title="COMSOL_News_2017_Acoustics page 22" href="https://secure.viewer.zmags.com/publication/394620a2?page=22"> FOOD PROCESSES CCORMNESOLLUNIVERSITY, USA </a> <a title="COMSOL_News_2017_Acoustics page 23" href="https://secure.viewer.zmags.com/publication/394620a2?page=23"> MULTIBODY-ACOUSTICS INTERACTION drive shaft usi</a> <a title="COMSOL_News_2017_Acoustics page 24" href="https://secure.viewer.zmags.com/publication/394620a2?page=24"> MULTIBODY-ACOUSTICS INTERACTION FIG</a> <a title="COMSOL_News_2017_Acoustics page 25" href="https://secure.viewer.zmags.com/publication/394620a2?page=25"> DUKE UNIVERSITY, USA Manipulate and Control Sou</a> <a title="COMSOL_News_2017_Acoustics page 26" href="https://secure.viewer.zmags.com/publication/394620a2?page=26"> ACOUSTIC CLOAKING FIGURE 2. Design </a> <a title="COMSOL_News_2017_Acoustics page 27" href="https://secure.viewer.zmags.com/publication/394620a2?page=27"> ACOUSTIC CLOAKING incident beam object cloaked </a> <a title="COMSOL_News_2017_Acoustics page 28" href="https://secure.viewer.zmags.com/publication/394620a2?page=28"> NGI, NORWAY Shake, Rattle, and Roll Norwegian re</a> <a title="COMSOL_News_2017_Acoustics page 29" href="https://secure.viewer.zmags.com/publication/394620a2?page=29"> INFRASOUND-INDUCED VIBRATIONS two rooms. Løvhol</a> <a title="COMSOL_News_2017_Acoustics page 30" href="https://secure.viewer.zmags.com/publication/394620a2?page=30"> KNOWLES, USA On the Cutting Edge of Hearing Aid</a> <a title="COMSOL_News_2017_Acoustics page 31" href="https://secure.viewer.zmags.com/publication/394620a2?page=31"> FEEDBACK REDUCTION FIGURE 2. A rec</a> <a title="COMSOL_News_2017_Acoustics page 32" href="https://secure.viewer.zmags.com/publication/394620a2?page=32"> FEEDBACK REDUCTION help verify the robustness o</a> <a title="COMSOL_News_2017_Acoustics page 33" href="https://secure.viewer.zmags.com/publication/394620a2?page=33"> S, CAN he spe s. Echo ous c I e</a> <a title="COMSOL_News_2017_Acoustics page 34" href="https://secure.viewer.zmags.com/publication/394620a2?page=34"> NONINVASIVE ACOUSTIC TECHNOLOGY have occurred t</a> <a title="COMSOL_News_2017_Acoustics page 35" href="https://secure.viewer.zmags.com/publication/394620a2?page=35"> NONINVASIVE ACOUSTIC TECHNOLOGY </a> <a title="COMSOL_News_2017_Acoustics page 36" href="https://secure.viewer.zmags.com/publication/394620a2?page=36"> XI ENGINEERING AND WAT, UNITED KINGDOM Music to</a> <a title="COMSOL_News_2017_Acoustics page 37" href="https://secure.viewer.zmags.com/publication/394620a2?page=37"> HIGH-PRECISION TRANSDUCERS FIGURE 2</a> <a title="COMSOL_News_2017_Acoustics page 38" href="https://secure.viewer.zmags.com/publication/394620a2?page=38"> HIGH-PRECISION TRANSDUCERS results were astound</a> <a title="COMSOL_News_2017_Acoustics page 39" href="https://secure.viewer.zmags.com/publication/394620a2?page=39"> MULTIPHYSICS MODELING Simulating the World Thro</a> <a title="COMSOL_News_2017_Acoustics page 40" href="https://secure.viewer.zmags.com/publication/394620a2?page=40"> GUEST EDITORIAL COMSOL NEWS How Computational Aco</a>