Subject: RE: Re: [stella] Update: "do re bB" and webTune2600 From: "Bob Montgomery" <BobM@xxxxxxxxxxx> Date: Thu, 18 Aug 2005 11:57:04 -0400 |
Hi, >Well, it makes a lot of sense, but I hadn't seen the technique >described before. Do you think, then, the way 8 bits completely holds >the maximum range of distortion plus frequency is design or >coincidence? (And if design, why couldn't they just use a single >register for both?) Paul Slocum's "Atari 2600 Music And Sound Programming Guide," which you link to from do re bB and have a local mirror of, describes just such a technique. :P And 8 bits doesn't hold the maximum range of distortion plus freq: Freq requires 5 bits, Distortion requires 4. But because some of the distortions are duplicated (4 & 5, 6 & 10, 12 & 13) and some aren't really useful for music (0 & 11), you can represent *most* of the musically-useful distortions in 3 bits. -bob Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://stella.biglist.com
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