Why the hostility?
//What do you think they're talking about? Do you think they're certifying how to do R&D on CD burners? Do you think they want to certify a new standard for error detection and correction for CD burners to handle CDG graphics?//
A number of people had been asking why MTU was only willing to certify individual drives (which then had to be bought from them at markup) rather than certifying operation with particular drive models. None of MTU's responses dealt with the reason that some drives of a particular model will work well for CD+G while others may not, even if they're built to the same specification. Unless a burner lays down tracks precisely enough that even a non-terribly-good reader can achieve a raw error rate of less than 1 bad bit in 10^5, there are going to be glitches if the disk is played back on a typical karaoke machine. Given that CD-audio and CD-data disks can accommodate much higher error rates without noticeable degredation, many CD burners aren't made to such a standard.
//You're missing the point of this thread by confusing yourself with Yamaha's marketing hype. //
Yamaha makes the specific claim that their drive writes disks with less jitter than other drives. Jitter is a quantifiable phenomenon, and it can contribute to read errors, especially when combined with dust, fingerprints, optical degredation, etc.
//You said: "a misread in the graphics subcode data will cause a glitch to appear on the screen". I'm not having problems with glitches on the screen and audio dropouts. Are you supercat? If not, what IS you point?//
I've not yet burned any of my own disks (don't yet have a suitable burner) but I've certainly had problems with graphic glitches using other disks.
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