From the original SynthMaker forum (2004–2014), with its members’ names and dates.
theorize ·
i know it's really simple, but i'm not quite sure how to go about mixing the filters. i never tried this in synthedit, but i'm guessing you'd go about it in a completely different way in SM anyway. in synthedit i'd probably use a mixer module from on of the CK packs, or maybe a multiplication tree or something. just not sure how i should tree everything... shoud i double the lowpass signal and do two separate mixes (low x band)x(low x high) then mix the two? it's been a really long time since i've even used synthedit so cut me some slack plz peeps... i never was great with synthedit but i'm a complete noob with SM so any help (or corrections) would be very welcome.
thanks in advance
infuzion ·
Theroize, how well do you know SM? Have you gone through the tutorial, etc...?
Keep in mind that any changes you make to the signal path, the final VST's out must be between/= to -1..1
theorize ·
thanks infusion, yeah i've had a look at that tutorial and a some others like it in CM, but they are pretty basic and don't really explain much about what's going on beyond the super high-level stuff. and i knew that audio has to be inthe +/-1 range, just wasn't really thinking about that... synthedit was cool but hides alot of the dsp stuff that would really help me learn. i never really learned dsp and was still able to do some pretty cool stuff with it, just by trying out combinations and experimenting with setups from different examples, but since there were so many modules to use i just hooked shit up till i found something that worked. i didn't have to understand how a mixer worked as long as it did, so SM is really freakin cool to me because i don't need to use the sdk to make my own ideas happen... but i do have to start over and actually learn some maths. well i passed calculus so i think i kin do it (maybe). oh well i'm rambling now. sorry.
so yeah i guess i was coming at it the wrong way, i'm thinking i should average the signals instead. is that more along the lines? i was trying to think of it like a VCA or some modulation i thinks. different bird huh. lol. well gotta go to hell, hopefully i'll sort it tonight.
theorize ·
my inspiration for this filter comes from simsynth, but i don't think they are doing it right... from what i can tell the lowpass signal is mixed with the highpass, then that signal is mixed with the bandpass... so if the bandpass filter is turned all the way up, then adjusting the highpass has no effect. is this right? i think the bandpass should be mixed with the highpass, then that signal mixed with the lowpass, with the greater knob value of the high/band mix being the wet amount, that way the state of the filter is really a mix of the 3. any thoughts on this?
TomC ·
theorize wrote: my inspiration for this filter comes from simsynth, but i don't think they are doing it right... from what i can tell the lowpass signal is mixed with the highpass, then that signal is mixed with the bandpass... so if the bandpass filter is turned all the way up, then adjusting the highpass has no effect. is this right? i think the bandpass should be mixed with the highpass, then that signal mixed with the lowpass, with the greater knob value of the high/band mix being the wet amount, that way the state of the filter is really a mix of the 3. any thoughts on this?
Filters are used in serial, that means what comes out of filter1 goes right
into filter2 and so on.
And, yes, if 2 filters change the same frequencies there are settings where
you won't need the second one.
Tom
theorize ·
TomC wrote: Filters are used in serial, that means what comes out of filter1 goes right
into filter2 and so on.
And, yes, if 2 filters change the same frequencies there are settings where
you won't need the second one.
Tom
But I thought the whole idea behind the oberheim filter design was to have a filter that could morph between different types, rather than cascade a couple filters. that's what simsynth does, if i turn up the highpass halfway, then some of the highpass filter is mixed in with the low, but if i turn it up all the way then i get a pure highpass filter. i love this idea, i just think they could've done it better in simsynth. and the way i've done it it sounds different on all the settings, so if you have highpass and bandpass all the way up, then it sounds different if you drop out the highpass.
here's what i've got, it needs fine tuning but it works at least. does anyone know of a more efficient way to do the same thing?
Acrobat ·
what model from oberheim are you reffering to?
I wonder if it wasn't just the case of a notch with special Q settings or a couple of shelf filters crossing one another?
theorize ·
that's just the thing, I don't know about the oberheim filter, i'm just going off of the fact that image line claims that the simsynth has "oberheim" style filters... i've never been lucky enough to own or use an actual oberheim, so in all actuality i'm not doing an oberheim filter but a modified simsynth filter.
theorize ·
they claim to model it after Oberheim SEM, i'm reading about it now and haven't found anything about any SVF yet...
edit: apparently it's the OB-4. haven't been able to find out how it does it though. tomorrow i'm going to try and find some schematics for it.
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