Siemens LMS Acoustic Techday
Join us for our Siemens LMS Acoustic TechDay on 20 or 22 February 2018 with Filip Deblauwe from Siemens PLM, for some sound advice.
Sound is all around us, especially in the products we interact with every day. When we dislike it, we call it noise, which can also be a sign of disruptive functioning. Therefore, engineering teams around the globe work hard to reduce noise in the products they develop.
The key is to quickly understand where sound comes from. Array-based sound source localization techniques give fast results that accurately identify sound sources, which can be measured in one shot and produce results that are easy to interpret.
Topics to be discussed
Fundamental of Sounds: in this section the basics of acoustics will be briefly reviewed, starting from what is a wavelength and why we look at the data in octaves and dB and dBA(decibels) scale, what happens to the noise level when we add different sources together.
Sound Power: Why do we use sound power to quantify a source? There is sound power ISO standard either based on pressure measurements or sound intensity measurements. When to use pressure-based sound power versus sound intensity base sound power.
Sound Source Localization Part 1: Nothing is more difficult than finding out which part of a structure is emitting the noise. There are several techniques that can be applied to get a better inside in where the noise is generated on a structure. The most simple techniques are based on single point measurements and their advantages and disadvantages will be explained in the first part.
Sound Source localization Part 2: The more advanced source localization tools are from a set of pressure measurements and are propagating this information towards the source with the goal to have a better description of the
noise source than at the location the measurements were taken. This session will give an overview of the different propagation algorithms with their advantages and disadvantages.
Sound Diagnosis: In this session, we discuss how to properly acquire the data to do a good sound quality evaluation. In order to objectively quantify the sound metrics are used. Most commonly used metrics will be explained and for which sounds the best apply.
Material Testing: For an application such as acoustic simulation, it is crucial to now the material properties such as absorption and transmission loss. This session will give an overview of the different existing standards and now to measure the material properties.
Transfer Path Analysis: This is a technique that allows you to find out which component/part of the structure is contributing the most to a vibration/acoustic problem. In this session the principles behind transfer path analysis will be explained, and how to do perform such a test.