Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on Yesterday, 21:23

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by Falcosoft

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https://github.com/nukeykt/Nuked-SC55/releases/tag/0.3.0 JV-880 is supported now (@giulioz) SCB-55 and RLP-3237 are supported now (@matt713) More command line options: audio config, gm/gs reset (@Falcosoft, @pachuco, @UnBeatWaterGH) CPU emulation fixes PS - where can i find more info about command …

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Re: SBEMU: Sound Blaster emulation on AC97

Posted on Yesterday, 19:17

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by Falcosoft

in Marvin \ Sound

in Marvin \ Sound

Yeah, it struggles on Pentium MMX 233 with my SBLive, last time I tried it. It was almost there in terms of performance. Then it's worth a try with MMX enabled. BTW I remember some flags in control register needs to be set to enable it - maybe that's already done by HDPMI. otherwise the CPU will …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on Yesterday, 13:19

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by Falcosoft

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I'll get the hardware going tomorrow and see if this actually works. Yeah! Getting rock solid performance without stuck notes, tempo glitches or anything with 32-bit floats and an I2S DAC! -ab:520:{pageNum} works fine, pageNum can also be set low, like 8 for very low latency. IMG_1239.jpeg Nice, …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-25, 21:47

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by Falcosoft

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It does not depend on what you use the emulator for (games/Midi files). With the current implementation FLOAT32 doubles dynamic range/sample resolution. More precisely in order to prevent clipping the INT16 output path halves sample resolution in the last step currently. It can be heard in case of …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-25, 16:56

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by Falcosoft

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- I incorporated Falcosoft's INT16/FLOAT32 code and played around with it. It might not be as clear cut as always using pageSize/pageNum:8192/2 for FLOAT32 - at least not on macOS and linux. Too high a pageSize will cause microscopic tempo stutters, for now something around 6144/3 seems to work …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-25, 15:32

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by Falcosoft

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Actually we all somewhat missed the fact that the biggest role of pageSize is how frequently the engine updates the Midi state. So actually higher pageSize values even if they increase the stability of audio output they adversely affect Midi precision and timing. The lowest the pageSize the better …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-25, 15:04

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by Falcosoft

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- I incorporated Falcosoft's INT16/FLOAT32 code and played around with it. It might not be as clear cut as always using pageSize/pageNum:8192/2 for FLOAT32 - at least not on macOS and linux. Too high a pageSize will cause microscopic tempo stutters, for now something around 6144/3 seems to work …

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Re: VST Midi Driver Midi Mapper

Posted on 2024-04-23, 16:50

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by Falcosoft

in Marvin \ Sound

in Marvin \ Sound

Just noticed that the MIDI bug with Road Rash has been fixed in one of the newer CoolSoft MM builds. Nice! The Road Rash problem should be fixed even without Coolsoft Midi Mapper if you use this VST Midi driver directly as Midi output since this driver also supports midiOutSetVolume() calls the …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-23, 13:54

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by Falcosoft

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Just to make sure the problem is related to receiving Midi In data or not you can try to run the 4 demo song of the ROM continuously and notice if the stuck notes problem manifests itself or not. Yes, that's a good idea! Hard to do on the gui-less RPi4 though - I can try using the full graphical …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-23, 11:32

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by Falcosoft

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Do you have some instructions how to trigger this sticky notes problem in a reproducible way? Not at all I'm afraid. It happens like once every couple of minutes of continuous playback. Doesn't seem to coincide with anything else AFAIK. I've looked closely at CPU usage and I'm not seeing any …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-23, 11:14

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by Falcosoft

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As an unrelated side note - ever since I've started playing with this emulator, I've gotten sporadic (not very frequent) stuck notes. This happens when playing MIDI files from players both on the mac and Pi4, and also when using the Roland UM-ONE connected to a retro computer playing Doom, on both …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-21, 23:42

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by Falcosoft

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Greatly appreciated and a bit overwhelming. So many new options. What is the default buffer size? I can find the number 4096. The final buffer size is a product of page_size and page_count (page_size * page_count). If you want 4096 as a final buffer size you can use e.g. 1024 as page_size and 4 as …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-21, 22:51

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by Falcosoft

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It's hard to remember sometimes that not everyone on Github is familiar with coding - I absolutely agree that precompiled releases are essential! Yes, and compiling with Visual Studio is not as straightforward as it should be. So more frequent builds would be better. I managed to get a setup …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-19, 12:55

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by Falcosoft

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@Falcosoft: I got rid of the __attribute__((unused)) issue by inserting "(void)variable_name;" at the top of each function body instead. Should do the trick, and keep the code environment-agnostic. Thanks, I would say it's rather impressive even on x86-x64! For the sake of @zaphod77 I used …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-19, 11:22

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by Falcosoft

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Github PR of the Pi4-capable optimized code is up for anyone wanting to give this a spin before it's merged (hopefully)! Hi, I have tried to compile the emulator with your changes to test the speed improvements on x86/x64 CPU but I could not with Visual Studio (2019). It seems the 'unused' …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-19, 11:09

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by Falcosoft

in Release Announcements

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Github PR of the Pi4-capable optimized code is up for anyone wanting to give this a spin before it's merged (hopefully)! Hi, I have tried to compile the emulator with your changes to test the speed improvements on x86/x64 CPU but I could not with Visual Studio. It seems the 'unused' attribute is …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-19, 10:49

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by Falcosoft

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It's my belief that thees missing ROMs (for the other supported moduels) does not exits. Nukeykt was not hesitant to post examples of the mkII up and running, that they have not done it for the others hint at some possibility that my belief is correct. It might be so that because mkII now works the …

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Re: SC-88 Pro - Intro of MIDI files are always delayed

Posted on 2024-04-18, 13:29

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by Falcosoft

in Marvin \ Sound

in Marvin \ Sound

Hi, This is cannot be done easily (or rather at all). There is no such thing as starting at -2 beats. Bars, beats and ticks are calculated real time from the actual values/state (state depends on the actual tempo, time signature etc. that are valid at the exact current position and any of them can …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-17, 11:36

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by Falcosoft

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... I would presume as Falcosoft says, 66207 is a multiple of the original sample rate (presumably 33103 or 33104). I would have expected 32768 and 65536 personally, but I'm going to trust Nuke on this! 48 or 96kHz should be good multiples of the close to 32kHz signal to use in your system, though, …

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Re: SC-88 Pro - Intro of MIDI files are always delayed

Posted on 2024-04-17, 03:59

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by Falcosoft

in Marvin \ Sound

in Marvin \ Sound

1. This must be a false positive alert: https://www.majorgeeks.com/content/page/false_positives_the_unwanted_side_of_antivirus_protection.html https://blog.nirsoft.net/2009/05/17/antivirus-companies-cause-a-big-headache-to-small-developers/ What OS version and Antivirus software do you use anyway? …

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