Microphone wind noise – published in the Journal of the acoustical society of america paper

Our work into the perception and automated detection of microphone wind noise had been published in the Journal of The Acoustical Society of America. This paper discuss how wind noise is perceived by listeners, and uses this information to form the basis of s wind noise detector / meter for analyzing audio files you can access the Journal here:

Or if you don’t have access, the paper is will also be available here (the next couple of days)

http://usir.salford.ac.uk/id/eprint/32802

If you want to run the wind noise detection algorithm you can do so using the code here

https://github.com/kenders2000/WindNoiseDetection/

Wind noise – a starting point

So for the past few months have been have been investigating microphone wind noise.  We choose microphone wind noise as this came very high in our online survey into the main issues that can degrade the audio quality. The survey is ongoing so do please take the time to carry it out if you are interested.

 © http://www.flickr.com/photos/chimchim/To investigate microphone wind noise, the first task is to understand how it is generated.  Luckily has already been significant research that has already been carried out to this aim, so a thorough literature review was carried out.  The dominant source of wind noise in outdoor microphones are turbulent velocity fluctuations in the wind which interact with the microphone and are converted to pressure fluctuations.  There are other less significant factors which can contribute, for example when the microphone is embedded in a device and this is placed in a flow, this can cause vortex shedding and other resonant type behaviors. Continue reading