GE9X

After extensive research I have finally found the siren strings for ELS and all but two siren tones are now working in-game!
 
They seem correspond to the OpenIV assigned names but they have the beginning part of the string added. These were all found by me personally through research and experimenting, so you're welcome (also would appreciate this being a pinned topic for others to find). From what I gather the string is basically referring to the location of the siren file in the game's archive ('RESIDENT' being the RESIDENT.rpf and 'VEHICLES' being vehicles.awc, followed by the siren name). Strangely, the siren names identified by OpenIV for the main LSPD tones and the Sheriff Granger tones don't work so I will need help with that. Anyway, enjoy!
 
 
LSPD Main Police Siren:
"VEHICLES_HORNS_SIREN_1" - Police Primary
("RESIDENT_VEHICLES_SIREN_PA20A_WAIL" doesn't work for some reason)
"VEHICLES_HORNS_SIREN_2" - Police Secondary
("RESIDENT_VEHICLES_SIREN_2" doesn't work for some reason)

Firetruck Siren:
"RESIDENT_VEHICLES_SIREN_FIRETRUCK_WAIL_01" - Firetruck Primary
"RESIDENT_VEHICLES_SIREN_FIRETRUCK_QUICK_01" - Firetruck Secondary

Police Bike Siren:
"RESIDENT_VEHICLES_SIREN_WAIL_03" - Police Bike Primary
"RESIDENT_VEHICLES_SIREN_QUICK_03" - Police Bike Secondary

Sheriff (Granger) Siren:
"RESIDENT_VEHICLES_SIREN_WAIL_04" - Sheriff (Granger) Primary
"RESIDENT_VEHICLES_SIREN_QUICK_04" - Sheriff (Granger) Secondary
^ These two aren't working for some reason

FIB Siren:
"RESIDENT_VEHICLES_SIREN_WAIL_02" - FIB Primary
"RESIDENT_VEHICLES_SIREN_QUICK_02" - FIB Secondary

Ambulance Siren:
"RESIDENT_VEHICLES_SIREN_WAIL_01" - Ambulance Primary
"RESIDENT_VEHICLES_SIREN_QUICK_01" - Ambulance Secondary

Siren Warning/Priority Tones:
"VEHICLES_HORNS_POLICE_WARNING" - Police Warning
("RESIDENT_VEHICLES_POLICE_WARNING" doesn't work for some reason)
"VEHICLES_HORNS_AMBULANCE_WARNING" - Ambulance Warning
("RESIDENT_VEHICLES_AMBULANCE_WARNING" doesn't work for some reason)

Siren Horns:
"SIRENS_AIRHORN" - Airhorn
("RESIDENT_VEHICLES_AIRHORN_EQD" doesn't work for some reason)
"VEHICLES_HORNS_FIRETRUCK_WARNING" - Firetruck Horn
("RESIDENT_VEHICLES_FIRE_TRUCK_HORN" doesn't work for some reason)
 
 
My three requests are:
1. Why are a few of them not working, particuarly the Sheriff Granger ones? Could someone with knowledge help?
2. Can we get an AI Sirens mod that makes the AI change siren tones based on the vehicle's VCF siren setup?
3. Is there any way to remove the pitch filters that are applied to some of the sirens? (e.g. the ambulance and fire truck sirens in-game are lower pitched than the actual file itself)
 
 
Cheers everyone.

Update: searched and found a post from another user here who had the same problem, and did enough digging to figure out the problem. I dunno if y'all are using EUP with the LSPDFR config for it like I am, but this user was and it comes from apparently a call to a BCSO badge texture for the GUI that isn't actually there. Somehow that one missing GUI texture brings the whole "going on duty" code to a halt. To fix, open agency_eup.txt in Grand Theft Auto V\LSPDFR\Data\Custom, find the Blaine County Sheriff's Office agency section, and replace these lines:
<TextureDictionary>rde_bcso</TextureDictionary>
<TextureName>rde_bcso</TextureName>
with
<TextureDictionary>dia_police</TextureDictionary>
<TextureName>dia_police</TextureName>
 
And voila, you can go on duty as BCSO again.

That's the one I mentioned in the OP and a reply, I have it already and am in love lol. I really want to talk to the creator and have it uploaded here, I know a lot of users here don't go to other modding websites. I may talk to the creator and get him to register and post it here. It needs more exposure and use with LSPDFR players. Most people just use it to make going on classic GTA killing sprees harder, but it's PERFECT for adding realism and a serious challenge to LSPDFR. It has even been written about in articles regarding GTA V and PC gaming.
 
https://www.pcgamer.com/this-realistic-damage-gta-5-mod-adds-nerve-damage-heart-attacks-internal-bleeding
https://www.usgamer.net/articles/hardcore-grand-theft-auto-5-mod-adds-realistic-bullet-damage-and-heart-attacks
 
 
Been using it for a long time now, when Script Hook V is not working and it does not load I don't even feel like playing LSPDFR. It's simply not fun to march around with vanilla health like robocop shooting your way through every callout or situation. Locational Damage and Deadly Headshots is also a decent alternative as Peanut listed, however I am of the opinion GSW2 has more features and depth.

It's not a new game, it's an update. A big one, I agree on that, but "just" an update none the less.
I know some things like the improved AI must have taken a lot of time and tweaking to achieve what we're going to see in this release.
But it doesn't seem like a "3 years" kind of workload. I don't know how many devs are behind LSPDFR but I imagine just a few as it took 3 years.
If they don't have enough time to work on it, nothing stops them from getting more people involved. The community for this mod is huge and I'm sure a lot of very competent developers dream of working with them to improve the mod.
With that said, I have a huge respect for those actually working on LSPDFR. A big community means a lot of pressure and expectation, and I'm sure they do their best.

Well, you can move the dinput8.dll anywhere. By doing This you can play online because when you delete or move dinput8.dll from GTA V main directory it disconnects GTA V from using mods, but it can also corrupt your game data if you have edited files with OpenVI. Anyway this post is good.   

Its much better if you play this in the background.
 
 

Here's some action clips from an old Aussie police drama. Featuring: hideous cars, awful acting and an awesome siren!
https://www.youtube.com/watch?v=UesM_LUibQE
 
That's a variant of the LTS siren by the way, which was primarily used in the 80's and 90's all over the country. Unfortunately, the MFB is the only department which still uses it today. If you've ever seen the Mad Max films, it was the siren used on his interceptor. 
https://www.youtube.com/watch?v=l1yCZrF3J34