[music-dsp] R: A rephrasing of some of my sampling theory related concerns

2013-11-13 Thread Marco Lo Monaco
Dave, that image of you yelling °FEEDBACK° in such a funny way made my day, thanks! :))) M. -Messaggio originale- Da: music-dsp-boun...@music.columbia.edu [mailto:music-dsp-boun...@music.columbia.edu] Per conto di vadim.zavalishin Inviato: martedì 12 novembre 2013 18:22 A: A discussion

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Urs Heckmann
On 13.11.2013, at 07:50, Andrew Simper a...@cytomic.com wrote: I hope this clears things up and exposes ZDF as a confusing and pointless marketing catch phrase. It's not pointless for marketing in the sense that instantaneous feedback is much easier to explain than implicit integration. Users

Re: [music-dsp] R: R: Trapezoidal integrated optimised SVF v2

2013-11-13 Thread STEFFAN DIEDRICHSEN
On 13.11.2013, at 12:54, Vadim Zavalishin vadim.zavalis...@native-instruments.de wrote: So, after we have modelled them all, we are not gonna need any further modelling. ;-) At that time,we should offer real-time spice to let our dear customers tinker with their virtual circuits. We’ll

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-13 Thread Dave Gamble
Oh yeah? Well you'll never be able to model these! http://www.machinadynamica.com/machina31.htm /sarcasm :D On Wednesday, November 13, 2013, STEFFAN DIEDRICHSEN wrote: On 13.11.2013, at 12:54, Vadim Zavalishin vadim.zavalis...@native-instruments.de javascript:; wrote: So, after we have

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-13 Thread STEFFAN DIEDRICHSEN
You just need to convince SPICE to leave out components connected to identical nodes …. ;-) Steffan On 13.11.2013, at 13:08, Dave Gamble davegam...@gmail.com wrote: Oh yeah? Well you'll never be able to model these! http://www.machinadynamica.com/machina31.htm /sarcasm :D --

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-13 Thread Dave Gamble
I sellotaped a bag underneath an old behringer mixer, and now it sounds like an early Neve. My greatest regret is that I didn't make that website. It's poe's law. I suspect the owner is on here somewhere. Use the power of quantum mechanics to improve your audio! Dave. On Wednesday, November

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Lubomir I. Ivanov
On 13 November 2013 08:50, Andrew Simper a...@cytomic.com wrote: Now for all those people scratching their heads of the whole Zero Delay Feedback, here is the deal: Any implicit integration method applied to numerically integrate something is by its very definition using Zero Delay Feedback,

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Didier Dambrin
Trapezoidal.. Simpsons.. that reminds me of this quote (from The Simpsons) First, let me assure you that this is not one of those shady pyramid schemes you’ve been hearing about. No sir. Our model is the trapezoid! I hope this made science progress -Message d'origine- From:

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Andrew Simper
On 13 November 2013 20:31, Lubomir I. Ivanov neolit...@gmail.com wrote: On 13 November 2013 08:50, Andrew Simper a...@cytomic.com wrote: Now for all those people scratching their heads of the whole Zero Delay Feedback, here is the deal: Any implicit integration method applied to

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Andrew Simper
On 13 November 2013 20:00, Urs Heckmann u...@u-he.com wrote: On 13.11.2013, at 07:50, Andrew Simper a...@cytomic.com wrote: I hope this clears things up and exposes ZDF as a confusing and pointless marketing catch phrase. It's not pointless for marketing in the sense that instantaneous

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Andrew Simper
Hi Clemens and Urs! Time for a backflip from me, I completely agree with all the points you have both made in that describing to customers that there are no delays in feedback paths is much easier than describing implicit integration schemes. The title I gave this thread is clearly wrong and

Re: [music-dsp] A rephrasing of some of my sampling theory related concerns

2013-11-13 Thread Theo Verelst
I must say that where I received my (at the time) top level education, the PhD's had much higher standards concerning human modesty and theoretical respect. Probably that is because at the technical university one is supposed to decent work, and pass, say, the sophomore year (of EE in my case)

Re: [music-dsp] R: R: R: Trapezoidal integrated optimised SVF v2

2013-11-13 Thread Andrew Simper
Thanks to Clemens for spotting an error in the implementation of the skf, it was a copy and paste error from the svf version where I didn't update the denominator in the code to be the correct one solved for. I've updated it now: http://cytomic.com/files/dsp/SkfLinearTrapOptimised2.pdf All the

Re: [music-dsp] A rephrasing of some of my sampling theory related concerns

2013-11-13 Thread Richard Dobson
But Theo, music-dsp is not a university list. There is no reason at all to expect/assume that anyone has any particular qualification, nor even a relevant one. People are doing things here for love of the subject, not for grade points. They like reading the discussions, even (or perhaps

Re: [music-dsp] A rephrasing of some of my sampling theory related concerns

2013-11-13 Thread Dave Gamble
+1 Richard. Also, speaking for myself, don't mistake my levity for irreverence. Dave. On Wed, Nov 13, 2013 at 5:24 PM, Richard Dobson richarddob...@blueyonder.co.uk wrote: But Theo, music-dsp is not a university list. There is no reason at all to expect/assume that anyone has any

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Lubomir I. Ivanov
On 13 November 2013 14:51, Didier Dambrin di...@skynet.be wrote: Trapezoidal.. Simpsons.. that reminds me of this quote (from The Simpsons) First, let me assure you that this is not one of those shady pyramid schemes you’ve been hearing about. No sir. Our model is the trapezoid! heh, that's

Re: [music-dsp] A rephrasing of some of my sampling theory related concerns

2013-11-13 Thread Lubomir I. Ivanov
On 13 November 2013 19:24, Richard Dobson richarddob...@blueyonder.co.uk wrote: But Theo, music-dsp is not a university list. There is no reason at all to expect/assume that anyone has any particular qualification, nor even a relevant one. People are doing things here for love of the subject,

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Lubomir I. Ivanov
On 13 November 2013 08:50, Andrew Simper a...@cytomic.com wrote: Now for all those people scratching their heads of the whole Zero Delay Feedback, here is the deal: Any implicit integration method applied to numerically integrate something is by its very definition using Zero Delay Feedback,

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Lubomir I. Ivanov
On 13 November 2013 23:05, Lubomir I. Ivanov neolit...@gmail.com wrote: i completely and absolutely disregard the marketing of DSP software product in therms of terminology that users will never understand and i'm sure that even if you put uses calculus equations in there, it will still sell

Re: [music-dsp] Time Varying BIBO Stability Analysis of Trapezoidal integrated optimised SVF v2

2013-11-13 Thread Andrew Simper
Thanks very much Ross for taking the time to look at this! There is a lot of reading and theory so until I get some more time I personally can't really take on board any of it to provide you with any useful comments, but I appreciate your time. All the best, Andy -- cytomic - sound music

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Andrew Simper
On 14 November 2013 01:28, Dave Gamble davegam...@gmail.com wrote: On Wed, Nov 13, 2013 at 2:29 PM, Andrew Simper a...@cytomic.com wrote: On 13 November 2013 20:00, Urs Heckmann u...@u-he.com wrote: On 13.11.2013, at 07:50, Andrew Simper a...@cytomic.com wrote: I hope this clears

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Andrew Simper
On 13 November 2013 23:31, Andrew Simper a...@cytomic.com wrote: Hi Clemens and Urs! Time for a backflip from me, I completely agree with all the points you have both made in that describing to customers that there are no delays in feedback paths is much easier than describing implicit

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Andrew Simper
But here is another backflip: How about this one, take a basic one pole active low pass filter what uses feedback, it has the idealised nodal equations: 0 == geqamp (v0 - v1) - gceq v2 + iceq now take the same thing but in a passive ideal form with variable resistor (ie without feedback at

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Dave Gamble
Hi, On Wednesday, November 13, 2013, Andrew Simper wrote: On 13 November 2013 23:31, Andrew Simper a...@cytomic.com javascript:; wrote: Hi Clemens and Urs! Time for a backflip from me, I completely agree with all the points you have both made in that describing to customers that there

Re: [music-dsp] Implicit integration is an important term, ZDF is not

2013-11-13 Thread Andrew Simper
on topic i guess, i think that ZDF is a horrible term targeting real EE's. for the DSP crowd it may sound sane, but even then it could be expanded to something like zero unit delay feedback and i'm not even sure that will work any better. Yeah I agree BTW Andy, you mention DFI a lot,