Please send me an Email if you are going to use this package. Also, you are welcome to participate in the Shock & Vibration courses. Thank you,Tom IrvineEmail: tom@irvinemail.org * * * License information: The software packages on the following links are freely placed in… Read more
Alas, the water drainage pipes in my home have developed a singing sound with a frequency of 400 Hz. This is slightly above a G note on the musical scale. The singing occurs when someone has finished taking a shower on the second floor. Here… Read more
Here is a Matlab script for Doppler shift calculations: doppler.mHere is a related Newsletter article and sound files: June2003_NL.pdfK5LA.wavcno_wav* * *See also: Vibrationdata Acoustics Page* * *- Tom Irvine
Here is a unit conversion calculator, written in Microsoft Visual C/C++. units.exe Do a right mouse click to download and save. It may appear in your system tray after you download and run it. The contents in the Results box can be copied and pasted… Read more
Making sound recordings is easy these days given that iPods, iPads and Android cell phones have this capability. Here is a freeware program that can be used to process the sound data: Audacity This program can also convert the sound file from one format to… Read more
Amazon Product Link: Bose QuietComfort 3 Acoustic Noise Cancelling Headphones * * * * * * * * * * * * * * I have take several business trips lately with more to come. One of my pet peeves is hotel room noise from HVAC… Read more
(Image courtesy of A. Bhatia) Hotels have central heating, ventilation and air conditioning (HVAC) systems which generate noise that may disturb guests’ sleep. The noise propagates through ducts and room surfaces. Individual room air conditioning units may also cause unpleasant noise. The transmission paths in… Read more
I recently flew from Spokane to Seattle, Washington on an Alaska/Horizon Air Bombardier Q400 aircraft, similar to the one in the above image. This model aircraft has two Pratt & Whitney Canada PW150A turboprop engines. I captured the following video during cruise using a Motorola/Android… Read more
Two random signals of particular interest are white noise and pink noise. White noise is a random signal which has a constant power spectrum for a constant frequency bandwidth. It is thus analogous to white light, which is composed of a continuous spectrum of colours.… Read more
I have never formally published any of my papers in a refereed journal or even in an engineering magazine, but others who have done so have referenced my tutorial papers. I am enclosing samples, which include conference papers, etc. – Tom Irvine * * *… Read more