Dolby Digital is the name for audio compression technologies developed by Dolby Laboratories. It was originally named Dolby Stereo Digital until 1994. Except for Dolby TrueHD, the audio compression is lossy. The first use of Dolby Digital was to provide digital sound in cinemas from 35mm film prints.It is now also used for other applications such as HDTV broadcast, DVDs, Blu-ray Discs and game consoles.t was originally named Dolby Stereo Digital until 1994. Except for Dolby TrueHD, the audio compression is lossy. The first use of Dolby Digital was to provide digital sound in cinemas from 35mm film prints.
One thing that is important for proper driving conditions is proper tire inflation and pressure. The ideal range of pressure in cars is between 193-234 in kPa (kilopascal) or 28 to 34 psi (pounds per square inch). However, in heavier cars, such as minivans, the pressure can be higher, upwards to 303 kPa (44 psi). If a tire is under inflated by 41.4 kPa (6 psi), a loss of handling will be noticed and tire life will decrease. Most notable, fuel economy is reduced by 5%. If over inflated by 41.4 kPa (6 psi), the car will ride harsher since the car is more susceptible to potholes and debris.
To get the most relevant tire pressure, you need to check when the tires are cool, just before you head out for the day, or hours after your vehicle has been idle. Tires that have been used recently will have a higher pressure due to the heat from use.1  Get a cheap tire pressure gauge from any local auto parts store or hardware store. 2  EVERYONE who owns a vehicle should have one. 3  Screw the cap off of your tire. 4  Apply the tire pressure gauge to get the tire pressure. If they do, go elsewhere. 2  Inflate your tires to the recommended levels. 3  I always go 2-3 PSI over because I have driven to fill the tires and they are hot from use. 4  If you go too much over, deflate the tires by tilting the valve stem until you hear the sound of air escaping the tire.