[sdiy] scanned pots "jumping"

[cheater cheater]

Adam,
had you left out your insult I would have definitely left out mine.
But if you're looking for some listings, I can't help you to get the
best since my library is at least a thousand kilometers away. However,
following the amazon link I have sent you I've found that the third
book in the search results is C Algorithms for Real-Time DSP by Paul
Embree, within which chapter 4 section 4.1 contains the listing 4.3
that has C code for an IIR filter. Sure, it's for floats, and the IIR
filter is a bit overkill for parameter smoothing, but that's what you
get in exactly 4 minutes of searching, since I don't have much more
time before breakfast.

D.

On Thu, Feb 4, 2010 at 02:33, Adam Schabtach <lists at studionebula.com> wrote:
> 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
>> >>
>> >> _______________________________________________
>> >> Synth-diy mailing list
>> >> Synth-diy at dropmix.xs4all.nl
>> >> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>> >>
>> > _______________________________________________
>> > Synth-diy mailing list
>> > Synth-diy at dropmix.xs4all.nl
>> > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>> >
>>
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at dropmix.xs4all.nl
>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>