Interested Bystander
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- Joined
- Jun 4, 2013
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[/QUOTE]Yes Bystander, the farmer just looked at me strangely and walked away.[/QUOTE]
LOL - did a man in a white coat turn up?
There is an article on acoustics which summed up most information for me, partly because it was explained simply and with diagrams (LOL). Interestingly it also explains why people very nearby may not hear the sound in question at all. Apologies if this is the link I posted earlier.
I also learned how much acoustics knowledge is used at events such as Glastonbury where it is important that everyone hears the music. Lots to do with wind speed, terrain, temperature at ground level as well as, in the evening, the fact that the sound can take a different path due to inversion, ie it becomes cooler at ground level and warmer at height and this has to be taken into consideration with the sound levels of the music. This is the phenomenon that causes sound to travel over long distances and probably why wild animals could be heard on Silverwoods at night even though the animal enclosures in the nearby reserve are even further than the Burgers' home.
http://www.acs.psu.edu/drussell/Demos/refract/refract.html
LOL - did a man in a white coat turn up?
There is an article on acoustics which summed up most information for me, partly because it was explained simply and with diagrams (LOL). Interestingly it also explains why people very nearby may not hear the sound in question at all. Apologies if this is the link I posted earlier.
I also learned how much acoustics knowledge is used at events such as Glastonbury where it is important that everyone hears the music. Lots to do with wind speed, terrain, temperature at ground level as well as, in the evening, the fact that the sound can take a different path due to inversion, ie it becomes cooler at ground level and warmer at height and this has to be taken into consideration with the sound levels of the music. This is the phenomenon that causes sound to travel over long distances and probably why wild animals could be heard on Silverwoods at night even though the animal enclosures in the nearby reserve are even further than the Burgers' home.
http://www.acs.psu.edu/drussell/Demos/refract/refract.html