Filter Resonance

angstrom · 19 Jan 2006

the output of a filter is a 'stream' , not a float. floats & green data are equivalent to 'subcontrol' data in SE.

if you want to invert (IE *-1) a stream then use a stream multiply. you can use a float to one input of the stream multiply

stefan · 19 Jan 2006

angstrom wrote: the output of a filter is a 'stream' , not a float. floats & green data are equivalent to 'subcontrol' data in SE.

if you want to invert (IE *-1) a stream then use a stream multiply. you can use a float to one input of the stream multiply

Or a stream subtract, and connect the stream to the second input and nothing to the first.

oddson · 19 Jan 2006

...a stream subtract, and connect the stream to the second input and nothing to the first.

That works??? COOL!

stefan · 19 Jan 2006

oddson wrote: ...a stream subtract, and connect the stream to the second input and nothing to the first.

That works??? COOL!

Ofcourse 🙂 If we call the signal we want to invert "sig" taking a stream subtract component and doing the above will result in subtracting "sig" from zero = -sig

oddson · 19 Jan 2006

No I meant leaving the upper input unconnected works - I get the logic.

Thanks for the tip... I've been multiplying by -1 to invert signals.

stefan · 19 Jan 2006

oddson wrote: No I meant leaving the upper input unconnected works - I get the logic.

Thanks for the tip... I've been multiplying by -1 to invert signals.

Yeah. If the syntax becomes unclear, connect a zero float to it. Otoh, both operations are one cycle operations, so there's probably no speed gain here.

doug4350 · 20 Jan 2006

Yeah. If the syntax becomes unclear, connect a zero float to it. Otoh, both operations are one cycle operations, so there's probably no speed gain here.

Sure there is. Ya don't have to spend time looking up the daggum data component lol 😀 .

I've come to assume that an open connector is an implied zero or no-signal in most cases. Just don't leave the bottoms of the divides lonely 🙂 .

Aloha, Doug

ginocote · 22 Jan 2006

arke wrote: To make a filter resonate, take the output, invert it, add it back into the input filter. Thats how it worked in my SynthEdit filter (I had another VCA connected to the Resonance knob, of course). I did the same in Synthmaker, and it ... doesn't resonate.

I used "Float Invert" to invert the signal, then it runs through a VCA controlled by a knob in the 0-1 range (I tried 0-10 too), and no matter what I do with the resonance knob, it doesnt resonate. I also tried it with differnet amounts of poles, no difference. Any idea?

Hi, i miss something. in SE you can't take the filter output and return it in the input. this mean your doing a feedback path.

Cordially

angstrom · 22 Jan 2006

true.

welcome, Ginocote, welcome to the darkside.

😈

arke · 23 Jan 2006

ginocote wrote: arke wrote: To make a filter resonate, take the output, invert it, add it back into the input filter. Thats how it worked in my SynthEdit filter (I had another VCA connected to the Resonance knob, of course). I did the same in Synthmaker, and it ... doesn't resonate.

I used "Float Invert" to invert the signal, then it runs through a VCA controlled by a knob in the 0-1 range (I tried 0-10 too), and no matter what I do with the resonance knob, it doesnt resonate. I also tried it with differnet amounts of poles, no difference. Any idea?

Hi, i miss something. in SE you can't take the filter output and return it in the input. this mean your doing a feedback path.

Cordially

SE has a "Feedback Delay" module for doing feedback. SM does this automatically.