Engine Simulator: produce realistic sounds from various engine parameters

[samtimalsina]

I wonder if this could be converted into a web application, maybe using WASM? I'm sure a lot of people here want to try it out on their own, but for me the build process is daunting as I haven't written C++ since college days. A web application would be very accessible.

[blt]

FYI, this software is Windows-only for now, but there appears to be an active effort to make it cross-platform: https://github.com/ange-yaghi/engine-sim/issues/2#issuecomme...

[acutesoftware]

The sounds generated by this are very impressive - it is an actual simulation of the entire combustion process.

Best parts are the engine sound under load, slight delay when opening throttle and changing down a gear to force engine braking.

[ResNet]

YouTube Demo: https://www.youtube.com/watch?v=RKT-sKtR970

[jb_s]

This is great, I'm watching the video on YouTube now...

Are exhausts/mufflers modelled?

For ages I've wanted to simulate different designs for exhaust headers and systems, to be able to possibly create different/interesting sounds from certain engines - i.e. can you add some additional headers with a different length and make an I4 sound like an I6?

[tonmoy]

If I recall correctly he modeled the acoustics of the exhaust using equalizers and filters, so not really simulated

[_qua]

This is so cool and it's amazing to me that a single programmer was able to do this as a hobby project. (To me it's magic, I know to some this a just a big project).

[deburo]

Absolutely amazing. I wonder, do games like GTA simulate those sounds as well, or is it pre-baked somehow?

[mhh__]

In games you get a better result for the cycles by cheating rather than doing a physical simulation.

Live for speed IIRC did have a fully synthesized engine sound but most games now have samples and some clever interpolation / synthesis as mentioned by others.

[cammikebrown]

GTA used a combination of pre-recorded real life audio and their own granular synthesis engine. (Granular synthesis uses sampling, but cuts up the samples into tiny pieces and processes them in various ways.)

[avereveard]

Automation Game (car tycoon) features engine design and stimulates sounds from a combination of individual parts snippets iirc as you move around you can hear the valve train clicking or the cylinder firing

[6510]

It would be epic to make something for this guy.

https://www.instagram.com/foton_automotive/

[npteljes]

Further discussion:

"Simulating an Entire Car Engine (yes, it makes noise)"

https://news.ycombinator.com/item?id=32367979

[blt]

This is so cool. It makes me wonder what kind of amazing simulation software is behind closed doors in car companies.

[Cloudef]

Wish I was doing something interesting like this for a work, instead of working on boring SAAS stuff