10 More Cool Engineering Videos
Our previous collection of cool engineering videos in 2010 proved so popular that we just had to make another list. So here we present another 10 really cool engineering videos.…
What is the difference between microphone types?
We're often asked what is the difference between microphone types; free field, diffuse field and pressure. For a run-of-the-mill ½ inch microphone the short answer is nothing. However the long…
Measuring Exhaust Noise Using A P8000 System
The following note describes measuring exhaust noise using a Prosig P8000/DATS system for the refinement of an automotive muffler design for a major after-market exhaust manufacturer in Europe. The particular vehicle under test was required by local legislation to have an overall radiated noise level of less than 70 dB. When tested, the vehicle was found to be producing 71.8 dB of radiated noise. The design of the exhaust system clearly needed to be reviewed and modified. (more…)
