Surround sound

Article Abstract:

Surround sound systems have speakers front and back in the car of which most of them are basically '5.1-channel' setups, with separate signals feeding two speakers by the back seat and three across the front of the car, plus a subwoofer that carries only bass. These systems also have circuits that derive the separate signal channels from broadcasts and recordings and, increasingly often, disc players that handle DVDs as well as CDs.

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Aftermarket navigation

Article Abstract:

Navigation systems are available in three types such as in-dash, on-dash and portable-computer-based, priced at approximately $3000, $1500, and $500 respectively. It check all possible routes to find the fastest and shortest route, check the position and speed against the route, and announce upcoming turns in time to switch lanes.

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RDS: radio you can read

Article Abstract:

The Radio Data System (RDS) is a car radio that displays information on the program being broadcast on each station. It also makes traffic announcements and sets the clock to the correct time. RDS radios will be available in 1998 models of Cadillac Seville STS and optional in Porsche, Caddys and Audis.

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