[Rookie67]

Hi all

this is a just small "give back" from me to this awesome community.

Each ".prs" file contains a collection of properties, a property set. According to their location they have a different function

• a file located in ..\presets\acoustics\ contains a property set, called the listener property set. This describes the listener’s
  surrounding environment (the “room” in which the player (listener) listens ).(for example: if you are in the cockpit, or
  outside the plane )
  
• a file located in ..\presets\sounds\ contains the second set, called the sound-source property set. This describes the way an
  individual source sounds within the surrounding environment. (for example: a plane´s engine , a gun shooting ...)

This first part is about the files in ..presets\acoustics
Landscape.prs defines the acoustic environment if you are outside of the plane.
All other .prs files define an basic acoustic environment, according to the construction of the pilot/gunner cockpit.
Look at the filenames and you can guess for which cockpit type they are responsible,
(note that a plane, that has a similar cockpit construction like the plane in the filename uses that file.
that´s the reason why there isn´t a file for each plane.)
for example:

• bf109.prs sets the properties if you are in a closed fighter cockpit with front and middle section made out of glass and a solid metal rear section.
  (this is not only used by bf109)
  
• i16.prs set the properties if you are in a fighter cockpit with an open middle section.
  
• he_111.prs set the properties if you are big bomber cockpit.

While playing il2 the program determines in wich environment you currently are and sets the acoustics according to the environment settings that were made in these files.
I will try to explain the functions and meanings of each property by a closer look to a few example files. (look at later posts)
Be aware that i could be wrong in some cases.

English is not my native language, so please don´t worry about my "blue" english.

Rookie