These days the companies that are producing automobiles are putting a lot of emphasis on the sounds that are generated from the cars. No doubt great music systems are installed in the cars that make the journey of the people pleasurable. But there are certain sounds that come out of the car that can make the driving experience distressing. 
One of the sounds that have been concerning the companies is the one that is produced when the door of the car is shut. If the sound is of very high pitch then the quality of the model is extremely poor. On the other hand if the sound is of low pitch and damped then the quality of the vehicle is too good. There are people who have the ability to choose the most expensive car out of the lot just by hearing the sound that is produced by slamming the doors.
Some sounds of the vehicle that expresses its quality
The sound coming out of the exhaust system of the car also plays a great role in telling about its quality. If the car is luxury then the exhaust must be quite. This will express the sophistication and luxury associated with the car.
The above stated statement is not true when the sports cars are taken into consideration. No one will like a performing car if it produces a dull sound. The companies incorporate high pitched sounds in cars so that their aggression and power can be manifested in a well defined manner. The companies are also giving choice to the people so that they can choose the right sound for their vehicle.
Not only in case of cars but sound plays a great role in determining the luxury or power associated with the bikes. Thus it is very necessary to have a good amount of information about the various sounds that are produced by the vehicles. This will help him in choosing the right one.