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

2013-11-15 Thread Theo Verelst
A few historically relevant contributions to solving network equations, and some related physical/mechanical excercises Keep in mind when simulating linear, time-invariant electrical networks, that it can be proven that the equations coming from the MNA method are the actual differential

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] 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] 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] A rephrasing of some of my sampling theory related concerns

2013-11-12 Thread Dave Gamble
Hi, I'm going to have a go at answering, but there will be points where I'm not sure exactly what you're saying. I'll be as clear as possible and request clarification. On Tue, Nov 12, 2013 at 3:56 PM, Theo Verelst theo...@theover.org wrote: Suppose we take a simple 1st order low-pass (or

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

2013-11-12 Thread vadim.zavalishin
On Tue, 12 Nov 2013 16:56:27 +0100, Theo Verelst wrote: Anyone want to explain to me what their most or least favorite implementation of thus simple, single order filter without feedback in the digital domain will do when we feed it with an impulse, a shifted step (occurring between samples),

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

2013-11-12 Thread Dave Gamble
On Tue, Nov 12, 2013 at 4:48 PM, vadim.zavalishin vadim.zavalis...@native-instruments.de wrote: PS. Speaking of EE, I believe this simple RC filter *does* have feedback, from the capacitor's voltage via the resistor's voltage to the capacitor's charging current. Which is also immediately

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

2013-11-12 Thread Theo Verelst
Dave Gamble wrote: On Tue, Nov 12, 2013 at 3:56 PM, Theo Verelsttheo...@theover.org wrote: Suppose . So lets take the equivalent of this simple filter in the digital domain (e.g. as function of a z^-1 network, and see what happens. Well, there's obviously no direct equivalent. It comes

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

2013-11-12 Thread Theo Verelst
Dave Gamble wrote: On Tue, Nov 12, 2013 at 4:48 PM, vadim.zavalishin vadim.zavalis...@native-instruments.de wrote: PS. Speaking of EE, I believe this simple RC filter *does* have feedback, from the capacitor's voltage via the resistor's voltage to the capacitor's charging current. Which is

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

2013-11-12 Thread Dave Gamble
Hi, On Tue, Nov 12, 2013 at 4:52 PM, Theo Verelst theo...@theover.org wrote: Dave Gamble wrote: On Tue, Nov 12, 2013 at 3:56 PM, Theo Verelsttheo...@theover.org wrote: Suppose . So lets take the equivalent of this simple filter in the digital domain (e.g. as function of a z^-1

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

2013-11-12 Thread Dave Gamble
Heya, On Tue, Nov 12, 2013 at 4:54 PM, Theo Verelst theo...@theover.org wrote: vadim.zavalishin wrote: On Tue, 12 Nov 2013 16:56:27 +0100, Theo Verelst wrote: Anyone want to explain to me what their most or least favorite implementation of thus simple, single order filter without

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

2013-11-12 Thread Dave Gamble
On Tue, Nov 12, 2013 at 4:56 PM, Theo Verelst theo...@theover.org wrote: Dave Gamble wrote: On Tue, Nov 12, 2013 at 4:48 PM, vadim.zavalishin vadim.zavalis...@native-instruments.de wrote: PS. Speaking of EE, I believe this simple RC filter *does* have feedback, from the capacitor's

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

2013-11-12 Thread vadim.zavalishin
On Tue, 12 Nov 2013 17:54:49 +0100, Theo Verelst wrote: vadim.zavalishin wrote: I'm not sure this question has very large practical significance within music DSP context (although I can admit that sometimes it can have one). Most of the time you are concerned just with the frequency response of

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

2013-11-12 Thread vadim.zavalishin
On Tue, 12 Nov 2013 17:54:49 +0100, Theo Verelst wrote: To me, that is for instance why it all sounds so horribly distorted, so, in the phase of the advent of new Electronics with New (better) Converters, its spells out the **essence** of my comments, so there you go. All is one too strong

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

2013-11-12 Thread vadim.zavalishin
On Tue, 12 Nov 2013 17:10:15 +, Dave Gamble wrote: As soon as I see a pole in the transfer function, I yell FEEDBACK and run around the room waving my arms. ;) In doing this, are you trying to compute the residue at the pole by using the Cauchy integral formula? Sorry, couldn't resist

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

2013-11-12 Thread Dave Gamble
On Tue, Nov 12, 2013 at 5:22 PM, vadim.zavalishin vadim.zavalis...@native-instruments.de wrote: On Tue, 12 Nov 2013 17:10:15 +, Dave Gamble wrote: As soon as I see a pole in the transfer function, I yell FEEDBACK and run around the room waving my arms. ;) In doing this, are you