DOLBY PRO-LOGIC

The Pro-Logic name is not used to describe a sound format as such, but to identify a particular type of technology. Dolby Pro-Logic decoders allow all of the four channels of analogue audio to be recovered from home cinema sources that carry a Dolby Stereo or Dolby Surround soundtrack. It improves on the basic Dolby Surround sound by allowing a centre speaker to be added above or below the television. If you buy a home cinema amplifier, receiver or processor now, it will have a Dolby Pro-Logic decoder included. Pro-Logic is the current minimum requirement for realistic surround sound. It can decode four channel surround sound from Dolby Surround encoded software, and will even do a fine job of creating its own pseudo surround sound with normal stereo sources, even when no surround information is included on the soundtrack.