AngeTheGreat
4 HN recommenders · recommended in 5 months, 2023–2025
12:04 · 2.1M views · Aug 2, 2022
AngeTheGreat describes building a physically realistic internal combustion engine simulator in C++, drawing on fluid dynamics, physics and chemistry. It generates procedural audio for engines such as a V8.
HN points to it as a standout example of physics-based sound synthesis and engine simulation.
5 comments from Hacker News
> Interestingly, while the engine has the most moving parts in real life, in code, it's the simplest piece of the entire car simulation. Because at its core, the engine is just a torque calculator. It's concerned with producing a single output: rotational torque, from a set of inputs. It is essentially a blackbox. This just reminded me of AngeTheGreat's incredible video series showing his engine simulator- absolutely worth checking out, considering it's optimized enough to run in real-time! The fact that he's simulating it well enough to generate realistic sound is absolutely mind-blowing. this video
Or combine it with that engine noise generator that uses a full physical simulation: this video That would be pretty sweet! I’m guessing with the ECU sensors you could do away with much of the sim parts.
You might find this software interesting: this video I don't know if any of the state of the art flight/driving simulators are doing this kind of engine noise synthesis already, but they should be.
Love physics based audio! Using the GPU is a great idea. Another physical audio simulation I like is the engine sound simulator made by AngeTheGreat: this video
Would love to play around with this and hear the differences in sound. Something like what this guy did with the engine simulator this video