ScriptNode - DC. Offset

[Lindon]

@d-healey oooh, yeah, ... nice...

[HISEnberg]

@Lindon This may be helpful as well

https://faustlibraries.grame.fr/libs/filters/#fidcblockerat

[Christoph Hart]

Why not use a mod2sig node?

[Lindon]

@Christoph-Hart tried that - didnt work....dunno why

[ustk]

@Lindon Seems it does work:

[Lindon]

@ustk oh Im not saying it doesn't work - just it doesn't work for a phasor_fm modulated signal...in my case... anyway davids solution worked perfectly...

[Jeetender]

@Christoph-Hart the sig2mod removed dc offset? how to remove dc offset

[ustk]

@Jeetender Not quite, more the opposite in fact since in rescales a -1 to 1 audio signal to a 0 to 1 modulation signal.

To remove DC offset you need a HPF

[Jeetender]

@ustk ive tried the HPF at 5-10Hz.. doesn't seems to be working any specific filter module?

[ustk]

@Jeetender Then your problem might be somewhere else. By definition the DC at the output of any HPF is -inf.
It's right that it can bring artefacts in some cases that are essentially due to its response time, but it definitely kill DC.

[Jeetender]

@ustk said in ScriptNode - DC. Offset:

@Jeetender Then your problem might be somewhere else. By definition the DC at the output of any HPF is -inf.
It's right that it can bring artefacts in some cases that are essentially due to its response time, but it definitely kill DC.

can a regular svf filter in scriptnode do it? or any other dedicated node ?

[Sifres]

@Jeetender yeah the stock one works just fine.

[Jeetender]

@Sifres said in ScriptNode - DC. Offset:

@Jeetender yeah the stock one works just fine.

so a HP at 5hz it is.

[ustk]

@Jeetender Hise HPFs don't go below 20Hz (unless I'm wrong, even if you set the parameter to 5Hz)

But I agree anywhere in the 5-10Hz range is better (the lower you go, the longer the delay response so it's not alway good to go below that, depends on your design)
So if you want to go below 20Hz, you need to wrap your own C++ custom filter (or Faust or other maybe?)