acoustic Archive
Measuring Torsional Vibration 101
Posted on January 24, 2012 | No CommentsDo you need to measure torsional vibration? Interested in shaft twist? Worried about rotational jitter? Don’t worry, we’ve got it covered. Here we have gathered together our most popular articles...
What’s All The Noise About?
Posted on November 24, 2011 | 4 CommentsWe’ve come across a number of great noise related resources lately. So, rather than keep them all to ourselves, we have decided to share them with our readers. Thanks should...
What is Synchronous (Angular) Sampling?
Posted on November 9, 2011 | No CommentsThe term synchronous data is usually applied to vibration or acoustic data that is captured from an item of rotating equipment at regularly spaced angle intervals as distinct from regularly...
5 Unusual & Interesting Acoustic Webpages
Posted on October 19, 2011 | No CommentsMany of our readers spend their days studying or solving noise problems. In our day-to-day work it’s often easy to forget some of the more unusual applications and miss out...
Prosig’s Australian Agent Will Be Exhibiting At Acoustics 2011
Posted on October 10, 2011 | No CommentsProsig’s Australian agent, ETMC Technologies, will be exhibiting at Acoustics 2011, the Conference of the Australian Acoustical Society. The conference runs from 2-4 November 2011 at Holiday Inn, Surfers Paradise, Gold...
Comparison Between Sound Intensity Probes and Acoustic Cameras
Posted on March 15, 2010 | 4 CommentsSometimes we are asked about the differences between an acoustic camera and a sound intensity probe and which of the two is better for a particular application. There is no...
What is the difference between microphone types?
Posted on January 19, 2010 | No CommentsI’m often asked what is the difference between free field microphones, diffuse field microphones and pressure microphones. For a run-of-the-mill ½ inch microphone the short answer is nothing. However the...
Sound Steering
Posted on September 12, 2007 | No CommentsThe requirement was to develop a ‘standard’ test for assessing the sound quality of power steering pumps in vehicles. Measurements needed to be objective so that the method would be...
Prosig / Sensound Alliance
Posted on April 7, 2007 | No CommentsProsig USA Inc. is proud to announce an alliance with SenSound, maker of powerful 3D acoustic holography software. To kick off the new Prosig / SenSound alliance a demo day...
Made To Measure
Posted on June 6, 2006 | 4 CommentsIn this note the different types of transducers that can be used with the Prosig P8000 series data acquisition system are discussed. The article deals with the design and function...
Exhaust Development Using A Prosig P8000 System
Posted on February 20, 2006 | 2 CommentsThe following note describes an application of the Prosig P8000/DATS system in the refinement of an automotive exhaust muffler design for a major after-market exhaust manufacturer in Europe. The particular...
A Simple Noise Test
Posted on August 26, 2005 | 2 CommentsIn a recent article we described how the Prosig P8000 hardware and DATS software had been used to help Dalmeny Racing diagnose a problem with an exhaust bracket on their...
Audio Equalisation Filter & Parametric Filtering
Posted on May 17, 2005 | No CommentsWhen working with audio signals a common requirement is to be able to equalise, cut or boost various frequency bands. A large number of hardware devices on the market provide...A, B & C Weighting
Posted on June 6, 2001 | No CommentsSome devices, particularly digital tape recorders, apply A-weighting to all their data in order to achieve acceptable data compression. This is fine unless you want to analyse the unweighted data...
Interpretation of the Articulation Index
Posted on April 11, 2001 | 1 CommentThe Articulation Index or AI gives a measure of the intelligibility of hearing speech in a given noise environment. The metric was originally developed in 1949 in order to give...
