Re: [PD] bandpass or resonant?

2015-01-13 Thread Scott R. Looney
hey there - just to offer my armchair two cents on the subject... i am definitely no electrical engineer but to me Q, resonance and bandwidth are basically the same thing. this is commonly found in parametric EQs - there's not a lot of difference functionally between a fully parametric one band E

Re: [PD] bandpass or resonant?

2015-01-13 Thread Tilo Kremer
Hello, On 13.01.2015 04:20, Martin Peach wrote: > I was looking at circuit diagrams for analog synthesizers recently and > noticed that the "resonance" control is nothing more than feeding some > fraction of the output back to the input. With more feedback oscillation > occurs at the cutoff freque

Re: [PD] bandpass or resonant?

2015-01-13 Thread Alexandre Torres Porres
sound on sound's synth secrets backs me up when I say resonant filters amplify bands of frequencies ;) shttp://www.soundonsound.com/sos/oct99/articles/synthsecrets.htm not alone after all 2015-01-13 13:48 GMT-02:00 Alexandre Torres Porres : > This bit of the wikipedia article on resonance about

Re: [PD] bandpass or resonant?

2015-01-13 Thread Alexandre Torres Porres
This bit of the wikipedia article on resonance about "Q" ( http://en.wikipedia.org/wiki/Resonance#Q_factor ) mentions a lot of what we read about "Ringing Filter", and how a higher Q will make it "ring" longer... this is what you get from that bandpass in the EQ Cookbook that says it has "constant

Re: [PD] bandpass or resonant?

2015-01-13 Thread Alexandre Torres Porres
"*Ultimately I think "resonant" is a general descriptive term for filters, that shouldn't be interpreted as a detail of implementation.*" I guess you have a point there, and I was also driving to this conclusion. "*It sounds like the Resonz UGen in supercollider is exactly what Julius Smith is ta

Re: [PD] bandpass or resonant?

2015-01-13 Thread Brian Fay
It sounds like the Resonz UGen in supercollider is exactly what Julius Smith is talking about in that description of the two-pole filter. But then there's the other supercollider filter UGens with "resonant" in the name, which seem more like what Martin was describing - RLPF (resonant low-pass fil

Re: [PD] bandpass or resonant?

2015-01-13 Thread Alexandre Torres Porres
I'm pending to say that there is no real distinction between "Resonant filter" and a "resonator", and a "bandpass" can be implicitly thought of as a resonator. Here's what I also found in Julius' website https://ccrma.stanford.edu/~jos/filters/First_Order_Complex_Resonators.html Pass the mouse cu

Re: [PD] bandpass or resonant?

2015-01-12 Thread Martin Peach
I was looking at circuit diagrams for analog synthesizers recently and noticed that the "resonance" control is nothing more than feeding some fraction of the output back to the input. With more feedback oscillation occurs at the cutoff frequency for any type of filter, highpass, bandpass or lowpass

Re: [PD] bandpass or resonant?

2015-01-12 Thread Alexandre Torres Porres
Nice I give an impression to be an expert, but filters is just something I've actually recently started studying :) > I'm wondering if by "resonant" filter you mean the > same thing as "resonator" filter? Now you got me... good question, and I'm not sure, haha. The link looks nice btw, will defin

Re: [PD] bandpass or resonant?

2015-01-12 Thread Brian Fay
Based on your posts in this group, you definitely know more about filters than I do, so I don't really have an answer to this question - but I'm wondering if by "resonant" filter you mean the same thing as "resonator" filter? I saw something interesting earlier today about using resonator filters

[PD] bandpass or resonant?

2015-01-12 Thread Alexandre Torres Porres
Hi, are bandpass and resonant filters the same? Or is there a difference between calling one a resonant and not a bandpass? thanks ___ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list