Prosig Noise & Vibration Blog

Prosig’s Partner in China, Suzhou SV Technology Co Ltd, will be hosting a Prosig Chinese Customer Meeting Day on 25th October 2013. The day will be held at

On the 4th & 5th October 2013 Prosig, along with India partners Mari Aerotech, attended the National Conference on Condition Monitoring in Bangalore, India. Here are some photos

Are you a Flipboard user? “What is Flipboard?” some of you will ask. Flipboard is an up-and-coming mobile app for pulling all of your news sources and social

The Prominence Ratio is a technique designed to see if there are any aurally prominent tones in a signal. Primarily, the prominence ratio is applicable where we have

A two day National conference NCCM2013 is being jointly organized by GTRE, Bangalore and Condition Monitoring Society of India-CMSI on 4-5 October 2013 at JRD Tata Seminar Complex, Indian Institute of Science, Bangalore.

Picture the scenario; you have captured some noise & vibration data from a rotating machine. Typically, this might be noise in a vehicle cabin, but could have been

When performing frequency analysis of vibration data for any application the resultant spectrum has both amplitude and phase components, therefore the phase component represents half of the information

Last year’s Prosig ISVR Student Prize as won by Paul Clark for his project titled “A Mobility Model to Predict the Isolator Effectiveness of an Automotive Compressor”. Paul

One of the most searched for and read topics on the Noise & Vibration Measurement Blog is that of converting between measurements of acceleration, velocity and displacement. To

In the previous two articles (What Is Resonance? (Part 1) & What Is Resonance (Part 2)) in this series we have looked at how we can identify a

The Institute of Sound & Vibration Research (ISVR) at Southampton University was formed in 1963 and is 50 years old this year. Prosig was founded by staff from

Understanding filters is actually simpler than it may first seem. Creating a filter is another story; it’s like being able to drive a car without having to know

If you are visiting the SAE 2013 Noise and Vibration Conference and Exhibition in Grand Rapids (May 20th – 23rd) then please come along and see us at

Assuming one wants a frequency spectrum from an acquired time measurement, it is generally accepted that averaging of a signal in the time domain is not very useful

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

Anytime you measure something which is changing with time, there are multiple ways to quantify the signal. For the purpose of this discussion, we will be talking about how

This is often also known as Modal Testing. It is a method of testing that allows us to calculate the natural frequencies (modes), modal masses, modal damping ratios and

Whether you call them spikes, glitches, anomalies or data dropouts, these phenomena have been a problem to engineers ever since they started recording data. There are any number

Our engine model demonstrator being put through its paces. Runups, rundowns and ‘overclocking’  

This is an important subject to understand when working in the signal processing field. In terms of AC and DC Coupling, what is Coupling? Quite simply, coupling is

Prosig will be at Automotive Testing Expo North America from today, October 23rd, until October 25th 2012. Among the hardware and software on display will be some of the latest

There are many reasons to measure and analyze noise. It may relate to legislation or regulations that limit noise in certain environments, we could be using the noise

This article is a follow on from What Is Resonance? (Part 1) and answers some of the issues not covered in that post. How do you find the

The 2nd Annual Prosig Prize for Engineering at Portsmouth University has been awarded to Ashley Stehr for his project “Developing an engineering mechanism to reduce the effects of

This article addresses two basic approaches to analyzing rotating machinery during transient (sweeping rpm) conditions.  The first is the traditional method which uses Frequency (FFT) Spectrum analysis at