# Measuring Vibration

I want to measure the vibration in an environment so that I can isolate some equipment. What is the standard way of measuring this? Basically, I want to mitigate the effects of a nearby train. More important than the loud horn, I need to isolate the equipment from vibrations in the ground. I am looking at some products from newport, but they show resonance around 6Hz. Would vibrations produced by the train be incompatible with these? How can I measure such vibrations? I have some audio microphones and software that shows a spectral distribution, but I don't want to know about the vibrations transmitted through the air as much as I want to understand how much noise is traveling through the concrete floor. I tagged this experimental physics, because it is likely that an experimentalist would have a good answer.

• You could use a seismometer for ground vibrations: en.wikipedia.org/wiki/Seismometer#Teleseismometers. – Ernie Mar 15 '17 at 21:36
• The resonance peak is an inevitable consequence of the way these passive isolators work. The more important fact is that below the resonance frequency, they don't do anything - the transmissibility plot is a flat line at $1.0$. The resonance frequency will depend to some extent on the load that is being supported. As the answer says, first decide what frequencies need to be attenuated and how much attenuation you need. This minusk.com/content/technology/… might be useful (and explore the rest of that website). – alephzero Mar 16 '17 at 7:06