From the original SynthMaker forum (2004–2014), with its members’ names and dates.
datsound ·
The filter in SM is really nice. it has quite a mathematical sound as the resonance is very pointy at the apex. it is easier to control the res but it sounds like a whisper effect at high res. some resonance is round and more fat sounding like the reaktor one. are there some fatter filters available with different res caracter. maybe adding 2-3 filters together and using res on all of them but with a few cents of difference in pitch might make it fatter?
what is it that makes some filter resonance more musical and like an actual oscillator rather than being
like a hiss whisper effect? i figure it is to do with how round or how pointy the res is at the top, but it may be like some harmonic formula in the resonance itself that makes it more like a timbral sound.
rl ·
If you mean SM's SVF filter, that's the nature of the filter. At high resonance it will turn into a sine oscillator.
Maybe this lecture (http://dafx04.na.infn.it/WebProc/Proc/P_061.pdf, which discusses a moog filter implementation) will give you some hints. See espc. chpts. 5.2 and 5.3. Not an easy accomplishment.
datsound ·
rl wrote: If you mean SM's SVF filter, that's the nature of the filter. At high resonance it will turn into a sine oscillator.
Maybe this lecture (http://dafx04.na.infn.it/WebProc/Proc/P_061.pdf, which discusses a moog filter implementation) will give you some hints. See espc. chpts. 5.2 and 5.3. Not an easy accomplishment.
thankyou for the tip about the svf. I figure that by passing a moof LP filter trhough an SVF HP it is possible to make a bandpass using the moog resoncance shape?
that maths is abit OTT for me! would the svf make a sine osc because the resonance forms a bell curved frequency distribution that is equal to a sine harmonics distribution?
I dont find that the SVF sounds much like a sine oscilattor at high Res., i mean over .9 Res. it sounds like a grey noise going through a narrow bandpass filter, i.e a whispy sound.
Disco_Steve ·
unfortunatly DSP is routed in maths.
your talking about distrobutions and things, so you must have a 'maths brain'
i would greatly recomend trying to get your head around the maths a little bit, then you will have a much better feel for what is going on.
also have you check out the freqeuncy responce with the FFT module? (impulse responec FFT that)
it will give you a better picture of the filter so you can see not just hear the soundyou are looking for. (without the need to do the maths)
Steve
datsound ·
Thanks alot for that tip with FFT.
I understand maths theory because there are pretty shapes in it, and i like astrophysics, but i got a 2.85/10 in my advanced maths course in school as they wouldnt let me change back to normal maths, and i dont really get FFT calculus and physics algebra tbh.
Acrobat ·
datsound wrote: rather than being
like a hiss whisper effect? i figure it is to do with how round or how pointy the res is at the top, but it may be like some harmonic formula in the resonance itself that makes it more like a timbral sound.
There's almost no distortion using the SVF filter in SynthMaker, that's how it sound so "mathematical" to your ears. Without going too deep into the DSP underneath, first thing just try to add some waveshaping or a simple overdrive effect to make it more similar to a real filter. 😉
datsound ·
Thanks Acrobat.
I have actually seen that some res codes make integrated reverb type characteristic, so that the higher signals/numbers that go through them are held for a certain time and then then fade out... can anyone confirm that res can reverb it's peaks in this way across time when the input signal has faded?
Acrobat ·
datsound wrote: Thanks Acrobat.
I have actually seen that some res codes make integrated reverb type characteristic, so that the higher signals/numbers that go through them are held for a certain time and then then fade out... can anyone confirm that res can reverb it's peaks in this way across time when the input signal has faded?
? never heard & can't confirm, are you talking about maximizers or comb filters maybe?
datsound ·
just ordinary digital filters: i think it may be for the same reason that a signal can build up in a res filter as a squeak that screeches really loud till you have to unplug the sound. if a feedback loop can happen in a maximised res, maybe it is for the same reason that res can reverb slightly when seen in a sonogram.
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