But what if there's a wall blocking the sound? Now things start to get complicated reflections and such. This continuous and unconstrained nature actually SIMPLIFIES the math involved in manipulating that recording. And there's a volume in between those two, and so on. You've recorded a low volume sound? Well there's a volume even lower than that. Things in the real world are continuous and, for the most part, unconstrained by boundaries. And one of the things discovered early on when man first sought to manipulate Analog recordings of real world events is that "boundaries" cause problems. Not even the Digital Signal Processing I've mentioned in a few posts already. For we are about to encounter Blacker Than Black pixels, and learn what to do with them. So slip into your most Goth outfit, put on that sombre music, and lower the lights. Then with a wave of my hand (something oft accompanied in the teaching game with a sotto voce, "Step 2: A Miracle Occurs!") I mentioned there is ALSO a portion of the video data range reserved for describing pixels as, "Blacker Than Black". Of course your particular TV might not be able to turn a pixel TRULY Black. And uh, brighter pixels should be brighter than that. All the TV has to do is make that pixel, well, Black! No light output. It should be EASY, right? As I detailed in my post on Digital Video, every format for Digital Video DEFINES a particular pixel value as representing "Black". This of course starts with the proper display of Black itself! One of the Holy Grails of Home Theater (an avocation clearly overstocked with the darn things) is achieving the proper display of near-Black details in your video.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |