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Forums > CSDb Discussions > VICE new 8580 filters test build
2020-05-11 21:39

Registered: Dec 2001
Posts: 9229
VICE new 8580 filters test build


this is supposed to fix the "farting filters" in the new revised 8580 filter code by leandro nini.

please check problematic tunes :)
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2020-05-15 23:05

Registered: Jul 2004
Posts: 195
Nope "Restore to default settings" didn't make a change here.

Still the browser is way way louder..

Have to set the renderer to cairo due to my graphics card in the laptop, but that should make a difference?

Ftr the build you supplied is equally low on volume here.

Ftr2 C64debugger seems to be on the lower volume sid aswell.

Sidplay2.6w is way louder.

So yeah, i am open for ideas :)
2020-05-15 23:16

Registered: Aug 2004
Posts: 133
Quality of sound is improved comparing to the previous version, however, I still think 2.4 sounds better, at least to me. Nevertheless, hell of a job!
2020-05-15 23:55

Registered: Dec 2001
Posts: 9229
"the previous version" has exactly the same filter code (and sound) as 2.4 :)
2020-05-16 00:07

Registered: Aug 2004
Posts: 133
So I have no clue why 2.4 sounds better to me :) Maybe this 25 years of sid masturbation slowely destroys my hearing :)
2020-05-16 00:51

Registered: Dec 2001
Posts: 9229
Maybe this 25 years of masturbation slowely destroys my hearing :)

fixed =D
2020-05-16 11:42

Registered: Oct 2004
Posts: 208
Hey, thx @ Groepaz for the personal invitation :-)

I can confirm the current revision fixed that weird distortion glitch I got on my vice builds.

The tune in this demo had heavy problems before: You Will Be a Fossil Soon

New Filters Before:

New Filters Current:

Old Filters:

Unfortunately I still don't have a setup that allows recording from real machine for a "real" comparison. But it for sure doesn't sound anything like the completely distorted filters in the first WAV ;-)
2020-05-16 13:07

Registered: Dec 2004
Posts: 810
I think it's safe to conclude it's all Linus & GRG's fault. Without them, emulation would've been perfect for years already ;)

also playing that fossil intro now, and yup this sounds pretty good now, I also remember this one sounded fucked up in the past too.
2020-05-16 16:37

Registered: Aug 2004
Posts: 133
Quote: Quote:
Maybe this 25 years of masturbation slowely destroys my hearing :)

fixed =D

Thanks. I thought it’s due to the heavy overload of loud sid listening ;) should stop wanking immediately ;)
I did few comparisons with real hardware recording done by Xiny6581 and I still think new version struggles with filters. Check Hang Drum - https://youtu.be/FMbT2EtJqY8 and then listen to it at Vice. There is slight difference. Vice 2.4 sounds exactly as on the real machine. Maybe it just me but you were asking for the feedback so I’ve shared my five cents.
2020-05-16 16:57

Registered: Dec 2001
Posts: 9229
Damn nice tune :=)

I can hear the problem with the regular filters (which are like 2.4), but not with the new ones. *shrug*
2020-05-16 17:57

Registered: Aug 2004
Posts: 133
Ok, I've been adjusting filter bias and by increasing the value up to -2200/-2400 it sounds better.

In case of this tune Bad Ass I went up to -1500 to achieve good result.

Thanks for your hard work guys.
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