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[Eldon45]

Hi All--
First of all, thank you to the SAS team and all the contributing modders for this wonderful site.  As a 99% offliner I enjoy customizing my game and I love the generous offerings here.

I would appreciate a little clarification regarding .prs files:

1) I noticed that one .prs will interact differently with different planes linked it: for instance the IL-2 and IL-10 must read the same AM series motor .prs directions differently, since the IL-10 engine revs noticeably higher than the IL-2 and MiGs.  Is this difference buried in the mysterious (to me) individual aircraft files, or is there some way to alter this relationship through the .prs files themselves? (if so, I haven't discovered it).

2) Could someone please clarify, in a more detailed way, the different .prs lines or direct me to an explanation of them?  I've had no trouble adding additional lines and vaguely figuring out what "spl" does and so forth, but if someone could take time to lay out the basic ideas, I'd sure appreciate it!

[common]
mode         relobj pos
type         mixer
infinite     1
EAXMix       0
occlusion   -200
occllf       0.25                    <------IN THIS SECTION, WHAT DO ALL THESE DO?
eaxroom      10
obstruction -50
obstrlf      0.25
mutable      1

[spl]                                  <----------I've fiddled with this enough to understand it.
100

[samples]
air_start_00.wav
be4_1000.wav
be4_1500.wav
be4_2000.wav
be4_2700.wav
be4_2701.wav                      <------------------I understand this section.
bx4_1000.wav
bx4_1500.wav
bx4_2000.wav
bx4_2001.wav
bx4_2700.wav
bx4_2701.wav
dmg_86_0m.wav

[sample.air_start_00.wav]
infinite 1                                           <--------------I get this.
controls rpm start

[sample.be4_1000.wav]
infinite 1
env      8                 <------------what does "env" do?
controls rpm

[sample.be4_1000.wav.rpm]
minlo 100
minhi 700
maxlo 1200
maxhi 1700                        <------------An explanation of how each of these values influence the sound would be helpful.
value 3.0
pmin  -1.0
pmax  1000

[emit]
start
[emit.start]
speed 5
srand 0.15               <------------what do the "emit" values do?
vrand 0.1
prand 0.06
spl   85

num   3                 <------------what does "num" do?

sample0 an2_cyl_00.wav
sample1 an2_cyl_01.wav           <--------what are these?
sample2 an2_cyl_02.wav

Thanks for any help and/or direction!

[SAS~CirX]

what I can tell you form my side is yes, some planes use the same PRS file, but they "sound" different, cause they have different engines, with different parameters (like tyou mention, revving is one of them) that will interact with the prs file differently.

[Jiver67]

This post should answer most of your questions regarding the parameters in the preset files:

 http://www.allaircraftarcade.com/forum/viewtopic.php?t=22652