Hello everyone, what opinion do you have to this engine?

Very unrealistic, but a neat idea.

Too unrealistic. The acceleration is cool, but try to stop it at 250km/h

The Mercedes-Benz W210 E420 is fully upgraded with brakes at all.

How did you do the engine sound ?
Is it extracted based on real car sound or 100 % based on computer generation ?

I note it tries to sound little like V8 upon hard acceleration but overall the sound is still not realistic enough but at least somewhat better than the stock mod sounds.

I myself have been trying to do V8 sound for W210/124 series based on real recorded engine sound but so far it sounds more real than yours but overall still not yet able to get all the sounds properly to sound 'smooth' to be 'passable'..currently still 'work in progress' for me as such.

Hseochin wrote:
With the current way to make sounds, having it being perfectly smooth isn't possible, unless you do every RPM, which makes it very complicated and tedious process.

The problem i get so far is i don't have the sound track long enough duration within a certain engine rpm range.

Is there any software which can 'stretch' or 'duplicate' a sound recording such that the sound note remains constant for a longer time period ?? I know a obvious solution is to redo the actual sound recording driving the car holding it within a certain rpm range for a longer time but if that's not doable because the car not available then the only other way seems would be seeing what software technique is there to 'stretch' the sound ?? If that problem is solved i expect to be able to get maybe around 75% 'real' sound ??

I've found it easier to do 6-cylinder engine sounds (like E320 which i'm quite satisfied with mine as i find it quite real sounding) but for V8 engine sounds is more 'complicated' due to the low notes etc.

From my observations of vehicle engine sounds, the most boring & rough sounding tend to be 4 cylinder engines while the more 'interesting' & most smooth sounding are 6 cylinders with 5 cylinders somewhere in between.
V8 is in a class of its own 'above' the in-line engines i'll say while a V12 sounds more smooth & quiet than a V8 in the higher rpm range although not as quiet & 'self balanced' as a V8 in the lower rpm range. Also a 4 cylinder tends to as rough sounding as a V8 in the high rpm range.

I know it's troublesome to work on getting real engine sound simulations, but the satisfaction on getting it 'right' eventually serves as motivations to keep working on it.

Hseochin wrote: I may give it a shot with a Toyota V6 and/or an Audi Turbo 4 since I have a decent idea of what everything should be like.

As for the audio software, have a look at Audacity. It's a free, open source sound software that I've been using for years. It's very common to see people using in all fields of audio.