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brummer10 / XDarkTerror.lv2

valve amplifier simulation
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Signal has a "fizz" #4

Open cyrusadkisson opened 3 years ago

cyrusadkisson commented 3 years ago

Unfortunately, there is a deal-breaking "shhhh" fizz that you get regardless of the gain level when using this plugin.

brummer10 commented 3 years ago

Do you using a arm device?

cyrusadkisson commented 3 years ago

Yes. I wasn't aware that cpu architecture could matter for these types of things.

cyrusadkisson commented 3 years ago

And BTW, I get the same fizz on my desktop x86_64 machine. Not sure it does matter.

brummer10 commented 3 years ago

you should use some optimization flags for your ARM FPU register. like -march=armv7-a -mfpu=vfpv3

And BTW, I get the same fizz on my desktop x86_64 machine. Not sure it does matter.

maybe your sound-card forward dc-offset , (a lowpass filter in the sound-card at 21Hz helps a lot in such cases), that may be lead to some fizzing sound with this plug, I could otherwise implement a dcblocker to see if that helps.

cyrusadkisson commented 3 years ago

I don't have this issue with any of the other amp plugins (supersonic, epic, gxamp) on the same hardware (both arm and x64). It's not a noise being picked up by the pickups or anything like that. There is something wrong in the signal processing inside. BTW I only get the fizz when playing.

The non-dark orange terror plugin also does this, although it's not as pronounced. (Edit: resolved. It's tiny terror's fizz was insignificant and matches my Line 6 Helix.)

Have you tried it? Do you hear it?

brummer10 commented 3 years ago

It's not a noise picked up I talk about. It's dc-offset, this plugs suffers from that. It's related to the dsp algorithm they use. Let me implement the dc-blocker and we''ll see. I'll send a note here when done.

brummer10 commented 3 years ago

On thing I forgot to mention, those XTerror plugs must be used with a cabinet convolver, as they are plain head simulations. Otherwise they wont sound any good. https://github.com/brummer10/XDarkTerror.lv2#features

cyrusadkisson commented 3 years ago

Yes I'm using a cabinet convolver.

cyrusadkisson commented 3 years ago

Any thoughts about how to get rid of the fizz I was hearing?