What's Up With The Renoise High Pass Filter?

I’m a bit confused. The high pass filter doesn’t seem to do as much ummm… filtering as other filters. For example, to get similar results to other filters set at 500hz I have to set the Renoise filter to 5khz! Even then it still leaves a bit more low end than other filters.

Am I just being stupid?! :blink:

Maybe we can ask this dev to port his plugs, or they get included with the standard installation? He has a quite complete collection of nice effects. This would also cover a chorus and multiband compressor besides other things.


Phew, glad it’s not just me :lol:

Those GVST filters are the ones I use in lieu of Filter2, actually. Nice filters!

Well about replacing or adding DSP plugins… There was also something discussed in the team area with live models which are currently still VSTs fx.
So this is a “to be continued” story.

I’ve written a mail to the dev of the GVST plugins to see, if he’d be interested at all.

Have of course mentioned, that i’m not the person, who can make a final decision.

check Tone2 BiFilter
although its freeware, it isn’t accessible from http://www.tone2.com/ anymore.

I’m not an experienced DSP wizard myself yet, but for what it’s worth I think Arguru’s implementation of the RBJ cookbook filters sound absolutely wicked. I based the filters in Glitch v1.3 around it as well as some other little test plugins I’ve done which aren’t released. I haven’t personally done a lot of in-depth testing of the frequency responses or anything like that, but they feel quite steep and are definitely very useful at carving away unwanted areas in the sound. The highpass in particular is really nice and cuts a lot higher than Renoise’s filter2, almost cutting to total silence in fact immediately making it more useful for me.

C++ source on MusicDSP.org:

You’ll notice that Arguru says the code is not denormal safe, but it’s quite simple to fix that. Here’s the method I used anyway:

Define a constant

const kDenormal = 1.0e-24;  

Then modify the processing loop like so:

float filter(float in0)  
// fix denormal  
in0 += kDenormal;  
// filter  
float const yn = b0a0*in0 + b1a0*in1 + b2a0*in2 - a1a0*ou1 - a2a0*ou2;  
// push in/out buffers  
// return output  
return yn;  



yes, also the lo-cut filter makes the sound more thinner if the resonance is turned up then with other vst’s I’ve tried.

The gvst stuff (if it’s any good, didn’t try yet) with permission will speed up things.
and I also saw that they have synths.
build in vsti’s will be very great for experimenting new users.