Gran Turismo has always suffered from poor sound quality when it comes to exhaust notes vs engine noises. They took too much time recording the engine note from under the hood and not enough from the back of the car. Everyone needs to understand that the distinctive and most vehicle separating feature between cars is the growl that comes from the exhaust.
I found my old post reguarding the GT5 audio hole.
This may be a dead topic, but it is relevant to my opinion. Following a search in this online database, I found no conversation surrounding details specific to the dilemma related to audible authenticity.
What sound of the car shakes our inner teenager? Is it the whine of the alternator? Is it the constant suction of air through the filter? Is it the tell tail cry of the supercharger? Or is it the exhaust pipes resonance that causes those delightful heart palpations when we depress the throttle?
For all of the cars that have been mentioned in the posts that I did find with "search" it is not the sound coming from under the hood that has our attention. Several people pointed out how the Cobra sounds amazing, yet the Corvette falls short. Does the ‘Vette deserve less attention than the Espirit? Does the Twin Turbo Supra really sound limp compared to an S2000? It is the exhaust note emitted ladies and gentlemen. That sirens song at 5000 rpm pulling us to the finish line is where it’s at. It is not the whoosh of the intake so much as the pipe that's blowing that gut wrenching tune. Not the supercharger, not the headers, not the belts and certainly not the movement of the cylinders in the bowls of the engine itself. The single most audible separator from a Civic SI and a '06 Mustang GT is the sweet sweet sound of the exhaust. I hope that all the GT4 fans are following the trend here. It's the exhaust note that turns our heads at a movie theatre, restaurant and gas station. I'm focusing on the exhaust note to make a strong and valid point. Polyphony Digital and Sony did NOT focus on the exhaust note when recording the sounds to their vehicular library. In fact I remember distinctly boom mics placed over the engine compartment for several hundred vehicles being shown in .jpg and .bmp over the course of several months before the release of GT4.
Wonder why the Camaro sounds like a Cavalier? Open up your hood Camaro owners and have someone hit the gas. You won't hear much coming from the back of the car as it is drowned out by the engine bay filled with belts, air intakes, and block vibrations. Sickening isn't it that a game so dedicated to being the ultimate driving simulator completely ignores one of the fundamental elements that drives us to push the pedal around a corner. If PD wants to make you feel like you are in it to win it, then by every avenue possible, they should figure out how to recreate (not imitate) the sound we hear as a car drives by. It is this delicious goose bump generating exhaust note.
Look at the NFS franchise. They have all but mastered the recreation of the topic at hand during different stages of upgraded glory. Polyphony could have at the very least separated inline 4s from the V8s, twin turbo inline 6s from V12s with a more distinct and palatable flare.
My solution is not just to move the mic from the front to the back of the car. That would be too easy. It seems effective yet still far too easy. We are moving forward to the PS3 generation of Gran Turismo. Using fiber optics as the medium for digital sound, 7.1 capable processing from the PS3 and memory to support our little fantasy, it's high time we see some sound processing that is worthy of a world renowned driving simulator. Keep your mic PD, keep it under the hood and blend that source over the front stage left, center and right. Add 4 more that are mounted to each corner of the car. It would be preferred to have them attached to the bumper itself. Let's all get that visual. Microphones taped to the 4 corners of your favorite GT4 machine. Do any of you see the possibilities involving sound staging? An 03 RSX TypeS is our first test subject because it is what I drive. Engine bay sounds on front left and right stage, with emphasis on intake to the front left because that is where the open element sits. Now let's add the whine of the supercharger just off center to the right, as that is where the intake manifold is. Exhaust note to the right rear in FULL FEDELITY AS RECORDED BY THE MIC RIGHT ABOVE THE EXHAST SYSTEM!!!! I hope someone at PD read that. Let's say we get creative. Laguna Seca, between turn 3 and 4, 03 RSX TypeS passes an Opel Speedster on the inside lane. The sounds of the Opel passes by the front left to rear left as the move is completed. Your tires squeal on the left as you plow into turn 4, only the speakers relative to loss of traction emanate failure.
After your heart slows down, I would like for you to respond with a yay or nay to this thought process. As this is just my opinion I expect some to disagree. And to those I say, "Think of the possibilities".