Treballem la direccionalitat del so fent sirenes que pugen i baixen.[kml_flashembed movie="http://www.youtube.com/v/-S8B9CvqERU" width="425" height="350" wmode="transparent" /]
[kml_flashembed movie="http://www.youtube.com/v/zfFyHtLvCUM" width="425" height="350" wmode="transparent" /]
