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MSFS Meaning of LowerBound and UpperBound?

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10,055
Country
us-arizona
Hey all,

I am just learning the sound system in MSFS.
What is the difference between UpperBound and LowerBound?

From the SDK, which doesnt seem to tell me anything;
They can either be played when the watched value changes, or when the value reaches a specific range, which is defined by a LowerBound attribute and an UpperBound attribute (which default to -∞ and +∞) in the <Range /> sub-element.
I am doing a sound using a Local Var and wish the sound to fire on the backwards swing of the animation (when the door is closing) at the 90% 'closed' point (just before it hits and is closed. KF's are 0-100, so it would fire at KF-7ish... Would I use UpperBound="0.9" ?
20220829_100421.jpg

 
Messages
10,055
Country
us-arizona
What I am doing is inserting the sound to make the Ka-Chunk 'closing sound' of the door.
 
Messages
10,055
Country
us-arizona
Quite a bit of experimenting with this and noting that it doesnt seem to work.
Also, playing sounds Forward and Backward also has no control of the sound playing on the up-swing or the down-swing.
From what I also found, I cannot run 2 sounds on the same Local Var which really makes it difficult. As in impossible. I hope I am just doing something wrong and it might eventually work.
 
Messages
10,055
Country
us-arizona
I can get two sounds playing on top of each other with a single Local Var. Now if only I could figure out how LowerBound and UpperBound work and if I can slide over the secondary sound to work when the part is animating in the other direction, 'Backward setting'.

<Sound Wwisedata="false" WwiseEvent="custom_sound_03" FileName="door_opening_lh" LocalVar="DOOR_LH" Continuous="false" Direction="Forward" Units="PERCENT" ViewPoint="Inside" Index="0"> <Range LowerBound="1.0"/> </Sound> <Sound Wwisedata="false" WwiseEvent="custom_sound_04" FileName="door_closing_lh" LocalVar="DOOR_LH" Continuous="false" Direction="Backward" Units="PERCENT" ViewPoint="Inside" Index="1"> <Range LowerBound="1.0" UpperBound="100.0"/> </Sound>
 
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