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> https://twitter.com/protosphere_/status/1210386604419776512 Huh, TIL... didn't think OPL was popular at all in PC98 world
<superctr> PMD supports OPL
<superctr> at least, a special version
<kode54> Polkamon Mystery Dungeon
<superctr> everyone says that
<superctr> it's a sound driver for PC98 that everyone used. it was used in one or two IBM DOS games also
<superctr> IBM PC that is
<kode54> aha
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<fseidel> cr1901_modern: searching for that FDIV bug joke brought me to this delightful NYT article from 1994 with a number of Pentium jabs: https://www.nytimes.com/1994/12/18/business/viewpoints-take-my-pentium-chip-please.html
<cr1901_modern> "Nearly 300 Correct Opcodes"
<fseidel> my, how quaint :-P
<fseidel> they must have at least 400 now
<andlabs>
<andlabs> andlabsYesterday at 11:58 PM
<andlabs> going back to doing the DX100 stuff, I realize I can just extract dxconvert's vmm2fb function and use that to convert from DX100 internal voice format to FB-01 internal voice format
<andlabs> and then from that to OPM files
<andlabs>
<andlabs> andlabsToday at 2:29 AM
<andlabs> I now have the opm files out but I'll actually test them tomorrow
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<andlabs> um
<andlabs> what's the range of the DT1 value that's put in an .opm file? 0..7?
<superctr> it's the value that is directly written to the chip
<superctr> no conversion to two's complement or signed
<andlabs> ok
<andlabs> in that case yay ancient bugs in vopmxtfi
<andlabs> ok I think I need to figure out how velocity sensitivity works because these voices sound too soft but I think the dxconvert guys have it????? maybe????
<andlabs> especially in the bass sections of the notes; no accent whatsoever
<andlabs> especially in the bass sections of the notes; no accent whatsoever
<andlabs> er oops
<andlabs> of course I could just be listening to a wav file of multiple instruments; would need to actually get a dx100 to find out
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<andlabs> for an example of what I mean, compare http://www.synthmania.com/Yamaha%20DX100/Audio/Factory%20Patches/Bank%20A/02%20Uprt%20piano.mp3 to the equivalent voice in bank1, I can't reproduce those strong bass tones
<andlabs> the SL values, TL values, and DT1 values I got from my original naive conversion attempts are different but everything else is on point...
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<andlabs> !! I think my TL values are actually more correct
<andlabs> ...and my SL and DT1 values are just flipped from dxconvert's lol
<andlabs> not sure which one of us is correct
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