Request (Feature) Mixing vibration data into normal data

Did try the Dirt Rally plugin and put the Extra 3 to 1%.
Some nice movements on idle but on higher rpms the movements almost disapears.
When driving the car the rpm movements is drowning in the other vibrations.

I'm looking at doing this a bit differently. My plan is to have a separate actuator and seat heave plate (low inertia) in my sim for the high frequency stuff and leave the larger freq/movements to the 6DOF actuators. When the changes are made to Simtools to support this - separate A/B axis tuning center settings (not far off from today's info) I will implement it.

This is what I'm talking on the first post of this thread... a way to mix vibration signals with normal motion signals without the later being "drown" !!!

Is there no road surface feel in Simtools? (noob here)
thinking of using it for iracing and assetto corsa with prs200 actuators or pt-actuators

There is road surface feel... if you use fast servomotors... for such I recommend the AASD-15A servos that have 2ms response timing and can be used on PT-ACTUATOR actuators (not MDBOX...)

See this video:

I have asked to add two extras for inputs of Front left and Front right chassis RideHeights data.
With such feeds to my front two actuators, I bet would feel much more realistic. Currently the heave/roll/pitch data SimTool feeds for D-box style just not adequate (the vibration fundamental mode < 0.1Hz, lack of higher modes). You will not feel vibrations or micro bump or road surface details. By using chassis rideHeights data will overcome this. In fact, you don't need an actuator to be capable of vibrating at very high Freq. The max freq for vibrating the chassis is less then 15Hz.

Here the results for front left and right chassis rightHeights spectrum analysis I did with rF2 GT car data on Silverston track:



The heave data from vertical-g as SimTool used has much less detail and low freq, which feel is not coherent with racing car if use this alone for chassis vertical movement (OK for flight sim I think):



vertical g data: strong fundamental mode ~ 0.1 Hz; and 1st mode at ~ 0.4Hz, but lack of high freqs.



That suggests the ride heights data contains more road surface textures, high freq vibrations and micro bumps, while the vertical g data contains main bumps with strong impact force. This is understandable since the vertical-g data is the 2nd derivative of CG rideHeight in respective to time, hence with far less spatial information.

For an appropriate D-Box style simulation, wouldn't we want to add 4 extra inputs (front right, front left, rear right, rear left)? Or instead of adding 4 extra inputs, is it possible to have an advanced setting or Filter for the Heave axis to specify a specific chassis?

@yobuddy

As we talked before, the rideHights are chassis data, not suspension or shocks movement data.
The rideHeights vary very little but high freq, which will not impact the motion though. The motion (6dof or 3DoF, or nDOF) freq is <1 Hz.
In fact, the most expensive car sim used 4 actuators on corner for this purpose, the max aptitude is <0.2 inch:
https://www.researchgate.net/public...TY_OF_IOWA_A_TOOL_FOR_DRIVING_SAFETY_RESEARCH

Outside of the ride height/chassis data, would it just be as effective to have the suspension data directed to each actuator/corner? This would provide great feedback for road bumps and curbs. I have a GS-5 that is mounted on a 4 corner actuator rig, and the GS-5 does a very good job in simulating road textures and bumps, so the the data is definitely there in the game. Simtools just needs to be able to translate that data to each corner. Or maybe it's there already and I'm not getting the feedback from my actuators due to it's frequency.

I don't believe this is proper way though. Pedals/seat/steering wheel all are mounted on the chassis. Usually, chassis height is very stable, you don't feel whole car heave up down such "boat floating" effect (because of suspensions, shock and absorbers):

www.youtube.com/watch?v=Q7y6hT56cL0 and www.youtube.com/watch?v=DnGdA6qjr1c

Unlike a boat which the water wave can heave the whole boat up down, when a car hits bump or pothole it hits front tires first then rear tires. Chassis is relatively stable due to suspension and absorber and shocks (www.youtube.com/watch?v=3vElCOug8Fw&t=115s), so the car chassis pitches and rolls mainly (because the car hits road bump or pothole with front tires first: www.youtube.com/watch?v=VvkTpYH9AUI). The whole chassis may heave if hits very large bump or valley or hill, of which the size is comparable to the distance between front tires and rear tires, like rally car.

Have read some about the Wwise framework for game developers and they have some about motion.
They have motion data and then mix effects from audio data to the motion bus.
The image at the bottom of the page explains it good.
https://www.audiokinetic.com/library/edge/?source=Help&id=methods_for_generating_motion

I dont know if this is how D-Box does it?

Game Vibe can handle converting all sorts of effects to generic audio sounds with both freq and volume for buttkickers.
If that sounds could be converted to motion instead and mixed with the regular motion data.
Maybe could Game Vibe output generic audio or generic motion effects?
I know that I have probably mentioned this before but I could be totally wrong or I have trouble explaining

Newer MDBOXes have an audio input that creates motion vibrations from sounds but its like a black box (and only one channel). It would be much better if the control of the mixing could be done in Simtools/Game Vibe or such.

I have been playing around with the Dirt Rally plugin and the RPM on Extra 3.
On my rig (3DOF + 2) its on all four legs and on 5%, min/max 1500/-1500.

Vibration is a square wave that is customized depending on RPM and acc/brake G-force.
Low rpm low freq and short pulse.
High rpm high freq and longer pulse.
G-Force adds to the amplitude.

Even if its a square wave the motion is smooth...to smooth I think and can not be compared to a butt kicker.
I dont know if its the actuators not keeping up or if the motion mix makes it smooth?
I really want to test the vibration really clean with no smoothing or filtering byt maybe its clean now? @yobuddy

If anyone wants to try it its attached, the risk is on you ?

I can add that setting extra 3 axis to 100% and boundary to 6 makes the vibrations not drowning in the other movements.