MAME 0.201 is coming out in less than a week, and it occurs to me that there's a *lot* of audio improvements going into it, thanks to the efforts of the excellent superctr, cam900, and ValleyBell.
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For openers, we now have proper emulation of the Taito ZSG DSP, which dramatically improves audio in Taito G-Net games, making them nearly identical to released soundtracks. No more tinny audio that skews towards high frequencies!
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Then, the HLE implementation of Capcom's QSound chip has been updated based on reverse-engineering the QSound DSP's internal code, so the audio from Capcom CPS2 and other games using the QSound chip are dramatically improved, with proper spatialization and reverb!
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And at the last minute before the pre-release code freeze tomorrow, contributor 'cam900' has submitted support for the HuC6230 audio chip found in the NEC PC-FX console. Overall, I think
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On the audio front as well, there's significant progress towards emulating the Akai MPC3000, though the floppy controller is not yet implemented. Apart from audio, Taito's "Operation Wolf" now has proper protection emulation, thanks to its security MCU being dumped.
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Oh yeah, I almost forgot the thing I did for this release: Depending on your system and the system you're emulating, some 3D titles will be up to 30% faster. Note that this does not apply to 3DFX-based or PowerVR-based games. However, Namco System 22 is a good deal faster.
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Pardon my ignorance here, but I was wondering you might know anyone I can speak with about the QSound chip's use of sound synthesis and sampling? Doing some research on the topic, but it's a deep rabbit hole. Found this Tweet after much digging on the interwebs.
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Well, if you can get their contact info, ValleyBell did the current reverse-engineering of MAME's HLE QSound core. Otherwise, there's a verified accurate RE-ing of the QSound algorithm here: https://github.com/mamedev/mame/blob/master/src/devices/sound/qsoundhle.cpp … and .h - the CPP file is less than 1k lines of code.
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