ChanServ changed the topic of ##yamahasynths to: Channel dedicated to questions and discussion of Yamaha FM Synthesizer internals and corresponding REing. Discussion of synthesis methods similar to the Yamaha line of chips, Sound Blasters + clones, PCM chips like RF5C68, and CD theory of operation are also on-topic. Channel logs: https://freenode.irclog.whitequark.org/~h~yamahasynths
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<cr1901_modern> Well, just found out someone whose FM synthesis work I look up to may be a Tr*mp supporter (along with other red flags). Not gonna name them in the channel right now.
<cr1901_modern> But this is your general reminder to "kill your heroes". And to vet them. I'm gutted. :/
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<andlabs> my stance is that as long as they don't actively recruit in their music ted nugent style it shouldn't be a problem
<andlabs> people are assholes, after all
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<andlabs> hmm
<andlabs> I was thinking of ripping some music production software disks so I can use the disk images but then I remembered the current linux cd ripping landscape is not good
<andlabs> and then I noticed this project
<andlabs> related to our discussions on issues reading CDs
<andlabs> "Combined offset plus disc only"? "Combined offset minus disc only"? huh? what?
<andlabs> like now I'm tempted to not even bother ripping these program CDs and just installing them directly in the VM I have
<superctr__> soon we'll be ripping cds with domesday duplicator, reading the rf samples directly
<superctr__> and that will be the only accepted format
<andlabs> heh
<andlabs> these are all used discs in any case
<andlabs> so
<andlabs> look I just wanna start writing music with this copy of cubase I have
<andlabs> I'll archive them another day
<Lord_Nightmare> discimagecreator is now known as aaru
<Lord_Nightmare> see #aaru
<Lord_Nightmare> wait, NO
<Lord_Nightmare> discimagecreator was the 'other' project
<Lord_Nightmare> claunia didn't like it
<Lord_Nightmare> so she created discimagechef as a 'replacement' for it
<Lord_Nightmare> and discimagechef was later renamed aaru
<balrog> Lord_Nightmare: I think both have been around for about the same time?
<andlabs> shrug
<andlabs> so I finally got around to trying some of that windows music software I got a few months ago and it seems I don't have the registration key for the only Cubase disc that was actually open, oops
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<andlabs> I'm not sure if I shoudl just open these discs or properlya rchive them first
<andlabs> I know professional CDs aren't rewritable
<andlabs> I guess
<andlabs> maybe
<Nerionaya> drat you've seen through my devious plan to use tiny high-powered lasers to carve additional pits into CDs and change the data
<cr1901_modern> professional CDs are pressed I think
<cr1901_modern> CD-Rs have a dye on them. A CD-ROM player's can't distinguish pressed pits and lands from the data written to the dye of a CD-R.
<cr1901_modern> CD-RWs are similar, but a CD-ROM player's laser cannot tolerate CD-RW dye
<whitequark> cr1901_modern: i remember discovering that the temperatures reached in some rewritable media are quite high
<whitequark> though i think those were for DVDs
<whitequark> but, i'm wondering if you could actually damage a -ROM disc with enough power
<whitequark> in a predictable way that is
<sorear> a CD emulator a la flashpath
<whitequark> hah
<cr1901_modern> I wouldn't be familiar with anything like that, but can't help but wonder if some horrific copy protection scheme for CD-ROMs did just that- damage the disc w/ a controlled pulse at a specific point
<cr1901_modern> AIUI something similar was done for the most elaborate floppy copy protections (burn a hole into the disc media at a precise location)
<sorear> you mean using a customer burner?
<cr1901_modern> Well by CD-ROM, I mean "press the CD using a master, and then damage it using a laser"
<cr1901_modern> (Which, come to think of it, I don't actually remember how masters are manufactured)
<sorear> there was definitely at least one system which worked by pressing corrupted data, I don't recall any post-transcriptional modifications
<cr1901_modern> https://en.wikipedia.org/wiki/Compact_Disc_manufacturing#Mastering Okay, creating the master _does_ use a laser beam, but the replication doesn't. Oops :P.
<kode54> laserlok floppy disks involved burning a laser hole in the disk at a specific spot
<kode54> faking that copy protection involved writing two copies of the damaged sector to a real disk, each with different errors
<kode54> so it would compare the two and randomly get one or the other
<sorear> reminds me of mask fabrication
<cr1901_modern> Might be fun to boost the laser output of a CD player and see what happens. I have plenty of IDE CD players to test on. But not many CDs to test on :P.
<sorear> you're getting in to high power lasers?
<cr1901_modern> More that "hacking a CD player is definitely on my mid-future todo list", and playing w/ lasers will be a side effect of that.
<cr1901_modern> superctr__: For the record, SimonInns got domesday to work with a CD player, but it was a demo and AFAIK he's no more plans to work on it for now.