LMS SYSNOISE. For more than 15 years, LMS SYSNOISE has been the world-leading simulation solution for vibro-acoustic design, troubleshooting, and optimization. From predicting the noise radiated from vibrating structures, simulating the sound inside a cavity, to estimating the sound field around the structure, or even calculating the structural response to an acoustic load, SYSNOISE has helped our customers to optimize the vibro-acoustic performance of their products.