[[Environmental Conditions MOC]] > https://www.daeilsys.com/support/technical-notes/fundamentals-of-vibration/ ![[39CCCC2D-0F97-493F-B55F-B0FE4F6B6AD3.png]] >https://www.vibeng.com/blog Table from https://www.herzan.com/resources/tutorials/diagnosing-a-noise-issue.html | ****Frequency (Hz)**** | ****Likely Source**** | | ---------------------- | --------------------------- | | **0.5 – 1** | **Tide, Ocean** | | **0.5 – 6** | **Foot Traffic** | | **1 – 5** | **Building Sway** | | **5 – 10** | **Seismic** | | **5 – 40** | **Machinery (pumps, etc.)** | | **5 – 100** | **Vehicle Traffic** | | **30 – 50** | **Air handlers / HVAC** | | **60, 120, 180…** | **Electronic line noise** | | **60 – 7000** | **Human Voice** | | **300 – 300 MHz** | **Radiofrequency (RF)** | ![[Vibration-Narrow-Band-Chart-1.jpg]]