Dolby Pro Logic is a surround sound processing technology designed to decode soundtracks encoded with Dolby Surround.
http://en.wikipedia.org/wiki/Dolby_Pro_Logic
Listen to our  Dolby Pro Logic II podcast  where we discuss how to get  surround sound from stereo content Are you a Dolby licensee or looking for more technical details? Learn more about  Dolby Pro Logic II implementation and specificatio...
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Dolby Pro Logic IIz was selected for its ability to transform home entertainment by bringing the dimension of height to the surround sound listening experience for music, movies, and games.
investor.dolby.com/releasedetail.cfm?ReleaseID=423749 investor.dolby.com/releasedetail.cfm?ReleaseID=423749
At ICES 2009, Dolby is demonstrating Dolby Pro Logic(R) IIz, its newest matrix decoding technology designed to add new dimension and spaciousness to home entertainment systems. ... the availability of new televisions and AVRs with Dolby Volume and an AVR with Dolby Pro Logic IIz, are "forward-looking statements" that...
investor.dolby.com/releasedetail.cfm?releaseid=358119 investor.dolby.com/releasedetail.cfm?releaseid=358119
A Listener's Guide to Dolby Pro Logic II Learn About Dolby Digital A Listener's Guide To Pro Logic II Almost everyone has experienced the enveloping ... Pro Logic II is a dramatically improved, updated matrix surround system, based on the principles used to develop the original Dolby Pro Logic decoding back in the 1980s.
www.wildwestelectronics.net/lisguidtodol1.html
Dolby Pro Logic II is an advanced matrix decoder that derives five-channel surround (Left, Center, Right, Left Surround, and Right Surround) from any stereo program material, whether or not it has been specifically Dolby Surround encoded. O...
http://www.nvidia.com/object/nvdvd_faq
There are many different sound formats; you are probably familiar with three of them as they are displayed as the final credits roll on the end of a film. These are: Dolby : (Dolby Pro Logic, Dolby Pro Logic II, Dolby Pro Logic II x, Dolb...
http://www.av-sales.co.uk/q_sound.php#1
Dolby Pro Logic is the domestic equivalent. It takes the four channels of surround sound (left, centre front, right and a mono surround channel) from a VHS tape or television broadcast, properly processes the sound and reproduces that sound in your home.
www.audioenz.co.nz/2001/0404.html
Product Review - Dolby Surround Pro Logic II - The Technology and the Sound - March, 2001 ... Introduced last year, Dolby Pro Logic II is an improved, more intelligent matrix decoder. So improved is its decoding, that it succeeds where Pro Logic performed poorly, i.e., playback of non-encoded material such as conventional...
www.hometheaterhifi.com/volume_8_1/dolby-prologic2-3-20... www.hometheaterhifi.com/volume_8_1/dolby-prologic2-3-2001.html