axlanian
Posts: 11
Joined: Fri Nov 20, 2015 5:37 pm

Re: N64 HDMI converter thread

Sun Dec 27, 2015 10:23 pm

I sent my N64 to BadAss Consoles about two weeks ago, and I am CRAZY pumped about it. Had anyone here has their UltraHDMI mod done through him?

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marshallh
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Joined: Fri Jun 13, 2014 12:39 am

Re: N64 HDMI converter thread

Mon Dec 28, 2015 9:45 am

Thanks for the tip with Paper Mario.

It seems that the sample rate is 32khz, of course it varies between ~31800-~31900 causing my elastic buffer to go into hysteresis. I could hear it once I put on headphones and cranked it up. It seems to affect the string samples.
Levels are fine (they are kept 1:1 input to input). It's pretty much gone/unnoticeable everywhere else.

Good news, it can be addressed with a firmware update. Making an audio resampler is pretty difficult, but it gets way worse when the input sample rate isn't rational and changes all the time. I'm trying some things to see how to approach the problem differently.

MAX
Posts: 10
Joined: Sat Apr 11, 2015 3:34 pm

Re: N64 HDMI converter thread

Mon Dec 28, 2015 8:12 pm

I never noticed any crackling until someone mentioned it. I can hear it when I play my ocarina on MM.

iray1979
Posts: 5
Joined: Wed Dec 30, 2015 9:36 pm

Re: N64 HDMI converter thread

Wed Dec 30, 2015 9:46 pm

Hi Marshallh, I just had a general question for you. How difficult would it be to implement pixel shading and other various graphics filters into your board to smooth out some of the rough pixels generating from activating deblur? I know some emulators implement this with HQ2X and other various filters such as 2xSai, Super Eagle, Super 2xSai and scaleX. Wasn't really sure if this can be implemented in your hardware or not but it would be a nice feature to have in a future software revision for the ultra hdmi. By the way I just got it sent to me from badass consoles and I am loving it so far especially knowing what potential your creation has. Thank you!

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marshallh
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Joined: Fri Jun 13, 2014 12:39 am

Re: N64 HDMI converter thread

Fri Jan 01, 2016 1:34 pm

Well, the trouble with the algos is they are designed for limited color palettes where pixels have high contrasts with each other. If you try running these filters on some N64 3D graphics, the results are.. interesting. Bright, loud games don't look bad, but dark games look even more muddy and even worse the pixels appear to "swim" because you have subpixel movement in triangles. It's also hard to keep 2d HUD/sprite overlays looking clean, they are the hardest hit.

I am playing around with this a bit but haven't seen much promise.

On the other hand I've spent the past few days rewriting the audio resampler. Got things sounding great but I'm trying to take it farther with either Gaussian or cubic spline resampling.

FelsenMann
Posts: 7
Joined: Sun Dec 27, 2015 5:37 am

Re: N64 HDMI converter thread

Fri Jan 01, 2016 1:44 pm

What hardware would be needed to update firmware? (Is there a FAQ somewhere?)

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marshallh
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Joined: Fri Jun 13, 2014 12:39 am

Re: N64 HDMI converter thread

Fri Jan 01, 2016 4:02 pm

What hardware would be needed to update firmware? (Is there a FAQ somewhere?)
The upgrade comes as a N64 ROM. So anything that can run that will work. I need to finish the main site and get that up soon.

FelsenMann
Posts: 7
Joined: Sun Dec 27, 2015 5:37 am

Re: N64 HDMI converter thread

Sat Jan 02, 2016 5:14 am

The upgrade comes as a N64 ROM. So anything that can run that will work.
I didn't think of that! Awesome.

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protheanbeacon
Posts: 9
Joined: Mon Jan 11, 2016 7:47 pm

Re: N64 HDMI converter thread

Mon Jan 11, 2016 7:49 pm

The upgrade comes as a N64 ROM. So anything that can run that will work. I need to finish the main site and get that up soon.
So basically one of those N64 flash carts made by krikzz then? ;p

Tsurugi_Takuma
Posts: 60
Joined: Mon Sep 01, 2014 10:26 am
Location: Sweden

Re: N64 HDMI converter thread

Wed Jan 13, 2016 6:21 am

The upgrade comes as a N64 ROM. So anything that can run that will work. I need to finish the main site and get that up soon.
So basically one of those N64 flash carts made by krikzz then? ;p
Or one made by a guy known as marshallh....

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