Editing Dolby Pro Logic (section)

==Dolby Pro Logic IIz==
{{infobox brand
|name           = Dolby Pro Logic IIz
|logo           = Dolby Pro Logic IIz.svg
|logo_size      = 120px
|image          = 
|type           = Surround sound
|currentowner   = [[Dolby Laboratories]]
|origin         = United States
|introduced     = 2009
|discontinued   =
|markets        = Worldwide
|website        = [https://www.dolby.com/ Dolby official website]
|related        = [[Dolby Digital]]<br>[[Dolby Stereo]]
}}
'''Dolby Pro Logic IIz''' expands on Pro Logic IIx with the addition of a height component, creating front [[height channel]]s above the front left and right speakers, expanding a 5.1 or 7.1 system to 7.1 Height or 9.1. It identifies spatial cues in low-level, uncorrelated information, such as ambience and effects like rain or wind in the side and rear surround channels, and directs it to the front height speakers.<ref>{{cite web |title=Dolby Pro Logic IIz |url=http://www.dolby.com/consumer/technology/prologic-IIz.html |url-status=dead |archive-url=https://web.archive.org/web/20090122042418/http://www.dolby.com/consumer/technology/prologic-IIz.html |archive-date=January 22, 2009 |access-date=January 22, 2009 |work=[[Dolby Laboratories]]}}</ref> The channels it adds are matrixed, not discrete.
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