Instruments typically used to detect the ground motion of earthquakes can also be used to identify the type of aircraft ...

It probably can’t have taken long after the first spectrum waterfall display was created, before somebody had a go at creating a waveform that would create an image in the waterfall. We don’t know who ...

Understanding the sources and causes of acoustic noise of machines or system components under investigation is becoming more and more important in development, experimentation, production sampling, ...

The arrow is pointing to what a stroke on the space bar looks like on a spectrogram. (Credit: Inverse Path) VANCOUVER, B.C.--Presenters at the CanSecWest security conference detailed on Thursday how ...

On the left there is an oscillogram -- a sequence of levels corresponding to the values of the voltage levels on the microphone membrane of the phrase &laquoKids are talking by the door» told by ...

Humans have long admired the sound of birdsong, but to fully appreciate how technically amazing it is, you need an ultrasonic microphone. [Benn Jordan] recently created a video about using these ...