[sdiy] scanned pots "jumping"

[Adam Schabtach]

Precisely what Eric said. I thought that "cheater cheater" was referring to
"hundreds" of books on the specific topic of smoothing values taken from an
ADC used to read the position of a potentiometer, not the general topic of
digital low-pass filters. Any number of discussions on this list--this one
included--demonstrate that applying general theories of e.g. digital filters
to the specific challenges presented to those building synthesizers on small
microprocessors, often with small budgets, is not always as straightforward
as copying code listings. Hence if there are books that contain this sort of
specific information, I'd like to know about them, as would other members of
this list.

But hey, if my query made me look stupid, I can live with that. It wouldn't
be the first time I've looked stupid, and it probably won't be the last. :-)

--Adam

> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl 
> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of 
> Eric Brombaugh
> Sent: Wednesday, February 03, 2010 4:44 PM
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] scanned pots "jumping"
> 
> Damian,
> 
> Let's de-escalate this a few notches please. No one is 
> questioning your intelligence - it's obvious you've done a 
> lot of reading. Please do
> likewise: Adam certainly doesn't need to be schooled on DSP 
> considering his day job:
> 
> http://www.audiodamage.com/
> 
> I think the misunderstanding comes from some rather vaguely 
> worded references in previous posts that didn't make it clear 
> you were referring to digital filtering.
> 
> Let's keep it friendly please.
> 
> Eric
> 
> On 02/03/2010 04:31 PM, cheater cheater wrote:
> > Adam,
> >
> >> Care to cite some specific references to a few of these 
> "hundreds" of 
> >> books on the subject?
> >
> > here you go:
> > 
> http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-ke
> > ywords=digital+signal+processing&x=0&y=0
> > each and every of those books contains an explanation of 
> the one pole 
> > rc filter, of a smoothing filter, or a one-pole digital filter 
> > algorithm of some kind. Every single engineer to come out 
> of school in 
> > the last quarter decade knows what a low pass filter is, 
> and I am not 
> > only talking about electronic engineering and peripheral 
> disciplines.
> >
> > Here is some more for your viewing pleasure:
> > http://www.lmgtfy.com/?q=low+pass+filter+code
> >
> > And just so that you know you'll definitely get code:
> > http://www.google.com/codesearch?q=smoothing
> > http://www.google.com/codesearch?q=lowpass+filter
> >
> > So as you see, if you just try to search you find hundreds of 
> > examples. And those are in no way difficult to find, just need to 
> > think a little.
> >
> > I never said that everyone here is grossly ignorant on any subject.
> > However, if you feel attacked, then you probably have a 
> reason to feel 
> > so, but that's your own subconscious problem.
> >
> > Next time before you're calling someone out on knowledge, make sure 
> > you're not taking them on an absolutely basic topic such as 
> low pass 
> > filtering. Are you going to call me out on being able to 
> tie my shoes?
> > This sort of behavior makes you look quite stupid.
> >
> > John,
> > it's simple to join a mocker when you have no real 
> arguments of your 
> > own. If you have any specific things to say to me, you can 
> always use 
> > my email address. I felt compelled to give Adam information 
> about some 
> > books and such, but if we're supposed to talk there's no reason to 
> > annoy the list members.
> >
> > D.
> >
> > On Wed, Feb 3, 2010 at 20:33, John 
> Mahoney<jmahoney at gate.net>  wrote:
> >>
> >>> Care to cite some specific references to a few of these 
> "hundreds" 
> >>> of books on the subject? Since everyone else on this list 
> seems to 
> >>> be so grossly ignorant about this topic, I'm sure we could all 
> >>> benefit by being given a couple of specific examples of 
> the sources 
> >>> of your extensive knowledge.
> >>> Thanks in advance.
> >>>
> >>> --Adam
> >>
> >> I was curious as to the dictionary which defines 
> "uncomplicated" as 
> >> "having already been invented," as used below:
> >>
> >>> ... (and even core fusion is not that complicated 
> anymore, since it 
> >>> has been invented already).
> >>
> >> John
> >>
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