The sound is recorded in an engine compartment just like it was supposed to be... yes out doors but it makes little difference. I would expect even a novice sound effects person to know the difference between surface reflection and reverberation (and harmonic resonance from vibration). It doesnt matter what tool you use after a recording has been mixed like that you cant define how the sound was made. I will clear up the problem for you if you wish but I think since you have such wonderful tools you can use the help file and figure it out on your own.
Pure novice attempt at creating an argument.
I will admit that I used the term reverberation very loosely. Resonance would have been more accurate, but I would venture to say that most folks without acoustics or musical training to know what resonant pitch is. If one sings some notes of hums a tune in a specific room or environment, all notes being at the same volume, one will notice that a certain pitch will "sound", "echo" or stand out above the rest. When an object is forced into resonance vibrations at one of its natural frequencies (In this case, the engine compartment), it vibrates in a manner such that a standing wave is formed within the object. The natural frequencies of an object are merely the harmonic frequencies at which standing wave patterns are established within the object. Play a piano note bang on your car hood, hum a note and you get a complex wave composed of all the harmonics of the root note. The different standing waves corresponding to different fractions are called harmonics. Harmonic subdivisions occur in any situation where vibrational events are intersecting. If you add surface reflections, which in this case could come from all manners of flat, convex, concave, porous or non-porous surfaces fenders, firewalls, engine covers, insulation, etc it can be difficult to nail down the point at which the indirect sounds from surface reflections create more chaos than they do recording clarity and makes it very difficult to isolate the sound you are trying to capture.
As for not being able to use tools to determine
how a sound was made, you are 100% correct. One can, however look at a spectrum analyzer to get a graphical representation of what the prevailing harmonic resonance is in order to quantify them. One can also use their ears to determine where a sound was recorded, which in this case, does not sound like it is heard from the perspective on someone riding in the cockpit.
Why was this sound
supposed to be recorded in the engine compartment?
Why not record it from the cockpit?
Do you normally ride in the engine compartment?
