Reply by Rick Lyons January 6, 20122012-01-06
On Fri, 30 Dec 2011 01:57:07 -0800, Mac Decman
<dearman.mark@gmail.com> wrote:

  [Snipped by Lyons]

>Well I have lots of nights and days when I have confounding questions. >These questions could be due to ignorance or just the disparity of the >field of signal processing. It is really why I enjoy reading >comp.dsp, the disparate posts contain snippets of invaluable >information. > >These directions that follow are in order of me not finding the >answer. First, I look though my bookshelf throwing many books around >the room. Next, I search Google (this has really never turned up >anything that great) and sometimes it turns up some reference from a >web posted grad paper or from an indexed journal. Then I go back and >start following the references in the books I just tossed about. When >those turn up nothing I search IEEE, next I search all the other >journals, and then I decide to sleep on it. The next day, I ask >people at work if they have any clue what I am getting at. Then after >all that, I decide that the one paper I found a citation for, from a >journal I don't have a subscription to, might hold the answer. I >spend a while longer trying to find a copy of that one paper that I >just can't get. Then I decide to just figure out another way around >the problem. Since I'm a product engineer this solution normally >works. > > I'll add comp.dsp to my list now. I think that the personality is >what makes this place special. I would be glad to be called an IDIOT >because it should be a wakeup call; especially after reading though >all the back posts. If I'm asking some stupid question which I should >have found or should have known easily then I'd like to know it rather >than live in ignorance. > >Mark DeArman
Hi Mark, your post was fun to read. [-Rick-]
Reply by Mac Decman December 30, 20112011-12-30
On Wed, 28 Dec 2011 19:07:38 -0800, Fred Marshall
<fmarshallxremove_the_x@acm.org> wrote:

>On 12/28/2011 2:15 AM, Mac Decman wrote: >> On Wed, 28 Dec 2011 00:09:50 -0500, robert bristow-johnson >> <rbj@audioimagination.com> wrote: >> >>> On 12/27/11 8:21 PM, Jerry Avins wrote: >>> ... >>>>> Jerry, >>>>> >>>>> Sorry, after looking though old posts for hours I just couldn't help >>>>> writing a joke post. I thought everyone would see right through it. >>>> >>>> It's OK, Mark. The joke was on me. >>>> >>>> I try to be gentle with strangers. The trouble is, your post wasn't all >>>> that unusual. >>>> >>>> Jerry >>> >>> i hope you've learned your lesson, Jerry. Vlad is right, you should >>> crush these COMEDIOTS without mercy. >> >> Well one of these days I'll have a question which I can't answer by >> research and I'll post it. It sure seems after reading though this >> group that most people don't even look in the usual sources before >> popping off a post. I'm sure it drives all of the regulars almost >> nutty. I did really enjoy the recent thread about the rotary >> encoders. Not the usual area I am working in although I remember >> having some fun in college working on projects like that. >> >> Merry Christmas and a happy New Year to all those about, >> Mark DeArman >> >> > >Mark, > >I think that "most people" here have a pretty good idea about the "usual >sources". If one had to look up everything first, then: >- one might not have time to answer as often. >- one might not be as qualified to answer. >But, of course, looking things up is often a good idea. > >Now, when I do look things up then I usually provide the links or the >references (arch. almost) > >How do you differentiate "most people" (in this group) and "the >regulars" anyway? We drive ourselves crazy ... too true! :-) > >Fred
Fred, Well I have lots of nights and days when I have confounding questions. These questions could be due to ignorance or just the disparity of the field of signal processing. It is really why I enjoy reading comp.dsp, the disparate posts contain snippets of invaluable information. These directions that follow are in order of me not finding the answer. First, I look though my bookshelf throwing many books around the room. Next, I search Google (this has really never turned up anything that great) and sometimes it turns up some reference from a web posted grad paper or from an indexed journal. Then I go back and start following the references in the books I just tossed about. When those turn up nothing I search IEEE, next I search all the other journals, and then I decide to sleep on it. The next day, I ask people at work if they have any clue what I am getting at. Then after all that, I decide that the one paper I found a citation for, from a journal I don't have a subscription to, might hold the answer. I spend a while longer trying to find a copy of that one paper that I just can't get. Then I decide to just figure out another way around the problem. Since I'm a product engineer this solution normally works. I'll add comp.dsp to my list now. I think that the personality is what makes this place special. I would be glad to be called an IDIOT because it should be a wakeup call; especially after reading though all the back posts. If I'm asking some stupid question which I should have found or should have known easily then I'd like to know it rather than live in ignorance. Mark DeArman
Reply by Fred Marshall December 28, 20112011-12-28
On 12/28/2011 2:15 AM, Mac Decman wrote:
> On Wed, 28 Dec 2011 00:09:50 -0500, robert bristow-johnson > <rbj@audioimagination.com> wrote: > >> On 12/27/11 8:21 PM, Jerry Avins wrote: >> ... >>>> Jerry, >>>> >>>> Sorry, after looking though old posts for hours I just couldn't help >>>> writing a joke post. I thought everyone would see right through it. >>> >>> It's OK, Mark. The joke was on me. >>> >>> I try to be gentle with strangers. The trouble is, your post wasn't all >>> that unusual. >>> >>> Jerry >> >> i hope you've learned your lesson, Jerry. Vlad is right, you should >> crush these COMEDIOTS without mercy. > > Well one of these days I'll have a question which I can't answer by > research and I'll post it. It sure seems after reading though this > group that most people don't even look in the usual sources before > popping off a post. I'm sure it drives all of the regulars almost > nutty. I did really enjoy the recent thread about the rotary > encoders. Not the usual area I am working in although I remember > having some fun in college working on projects like that. > > Merry Christmas and a happy New Year to all those about, > Mark DeArman > >
Mark, I think that "most people" here have a pretty good idea about the "usual sources". If one had to look up everything first, then: - one might not have time to answer as often. - one might not be as qualified to answer. But, of course, looking things up is often a good idea. Now, when I do look things up then I usually provide the links or the references (arch. almost) How do you differentiate "most people" (in this group) and "the regulars" anyway? We drive ourselves crazy ... too true! :-) Fred
Reply by Jerry Avins December 28, 20112011-12-28
On 12/28/2011 5:15 AM, Mac Decman wrote:
> On Wed, 28 Dec 2011 00:09:50 -0500, robert bristow-johnson > <rbj@audioimagination.com> wrote: > >> On 12/27/11 8:21 PM, Jerry Avins wrote: >> ... >>>> Jerry, >>>> >>>> Sorry, after looking though old posts for hours I just couldn't help >>>> writing a joke post. I thought everyone would see right through it. >>> >>> It's OK, Mark. The joke was on me. >>> >>> I try to be gentle with strangers. The trouble is, your post wasn't all >>> that unusual. >>> >>> Jerry >> >> i hope you've learned your lesson, Jerry. Vlad is right, you should >> crush these COMEDIOTS without mercy. > > Well one of these days I'll have a question which I can't answer by > research and I'll post it. It sure seems after reading though this > group that most people don't even look in the usual sources before > popping off a post.
Some of the questions come from people who don't know there are usual sources.
> I'm sure it drives all of the regulars almost nutty.
Yup!
> I did really enjoy the recent thread about the rotary > encoders. Not the usual area I am working in although I remember > having some fun in college working on projects like that.
Me too. I have a couple of patents on that subject.
> Merry Christmas and a happy New Year to all those about, > Mark DeArman
And to you, Mark. Jerry -- Engineering is the art of making what you want from things you can get. &#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;
Reply by robert bristow-johnson December 28, 20112011-12-28
On 12/28/11 5:15 AM, Mac Decman wrote:
> On Wed, 28 Dec 2011 00:09:50 -0500, robert bristow-johnson > <rbj@audioimagination.com> wrote: > >> On 12/27/11 8:21 PM, Jerry Avins wrote: >> ... >>>> Jerry, >>>> >>>> Sorry, after looking though old posts for hours I just couldn't help >>>> writing a joke post. I thought everyone would see right through it. >>> >>> It's OK, Mark. The joke was on me. >>> >>> I try to be gentle with strangers. The trouble is, your post wasn't all >>> that unusual. >>> >>> Jerry >> >> i hope you've learned your lesson, Jerry. Vlad is right, you should >> crush these COMEDIOTS without mercy. > > Well one of these days I'll have a question which I can't answer by > research and I'll post it. It sure seems after reading though this > group that most people don't even look in the usual sources before > popping off a post. I'm sure it drives all of the regulars almost > nutty. I did really enjoy the recent thread about the rotary > encoders. Not the usual area I am working in although I remember > having some fun in college working on projects like that. > > Merry Christmas and a happy New Year to all those about, > Mark DeArman > >
same to you, Mark. you'll discover (if you haven't already) that there are some weird cultural personalities here. self-disclosure: i like to fight about the DFT or the dirac delta function and dimensional analysis. Vlad likes to belittle, well, pick on students and noobs. Rune lives in the dark Runescape above the Arctic circle. Jerry's just a nice guy. -- r b-j rbj@audioimagination.com "Imagination is more important than knowledge."
Reply by Mac Decman December 28, 20112011-12-28
On Wed, 28 Dec 2011 00:09:50 -0500, robert bristow-johnson
<rbj@audioimagination.com> wrote:

>On 12/27/11 8:21 PM, Jerry Avins wrote: >... >>> Jerry, >>> >>> Sorry, after looking though old posts for hours I just couldn't help >>> writing a joke post. I thought everyone would see right through it. >> >> It's OK, Mark. The joke was on me. >> >> I try to be gentle with strangers. The trouble is, your post wasn't all >> that unusual. >> >> Jerry > >i hope you've learned your lesson, Jerry. Vlad is right, you should >crush these COMEDIOTS without mercy.
Well one of these days I'll have a question which I can't answer by research and I'll post it. It sure seems after reading though this group that most people don't even look in the usual sources before popping off a post. I'm sure it drives all of the regulars almost nutty. I did really enjoy the recent thread about the rotary encoders. Not the usual area I am working in although I remember having some fun in college working on projects like that. Merry Christmas and a happy New Year to all those about, Mark DeArman
Reply by robert bristow-johnson December 28, 20112011-12-28
On 12/27/11 8:21 PM, Jerry Avins wrote:
...
>> Jerry, >> >> Sorry, after looking though old posts for hours I just couldn't help >> writing a joke post. I thought everyone would see right through it. > > It's OK, Mark. The joke was on me. > > I try to be gentle with strangers. The trouble is, your post wasn't all > that unusual. > > Jerry
i hope you've learned your lesson, Jerry. Vlad is right, you should crush these COMEDIOTS without mercy. -- r b-j rbj@audioimagination.com "Imagination is more important than knowledge."
Reply by Jerry Avins December 27, 20112011-12-27
On 12/27/2011 2:39 PM, Mac Decman wrote:
> On Tue, 27 Dec 2011 09:15:40 -0500, Jerry Avins<jya@ieee.org> wrote: > >> On 12/27/2011 5:20 AM, Mac Decman wrote: >>> I would like to design filter which has frequency frmo 0 hz to 1mHz >>> with passband equal to all filters. I have dsp which is top notch and >>> will do out of band processing. I would like to make sure all pass >>> band is free from phase modulation so that no problems acure with my >>> delicate process. Can some one help me with this problems. I hope >>> every who contributes to this group has a great holiday seaosn. Hope >>> you all have mary Christmasss and Happy new years,, >> >> MaC, >> >> Language is a problem here. I assume that you want a low-pass filter >> with a cut-off of 1 MHz, flat response in the passband. and linear phase >> response. That calls for an FIR (finite impulse response) filter. >> >> In order to design the filter, you need to know how flat the response >> must be -- nothing is perfect -- how much attenuation you need in the >> stop band, how sharp the cutoff must be (the sharper it is, the more the >> filter will ring) and the sample rate of the signal. Can you supply the >> missing information? >> >> Jerry > > Jerry, > > Sorry, after looking though old posts for hours I just couldn't help > writing a joke post. I thought everyone would see right through it.
It's OK, Mark. The joke was on me. I try to be gentle with strangers. The trouble is, your post wasn't all that unusual. Jerry -- Engineering is the art of making what you want from things you can get. &#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;&#4294967295;
Reply by Tim Wescott December 27, 20112011-12-27
On Tue, 27 Dec 2011 11:39:49 -0800, Mac Decman wrote:

> On Tue, 27 Dec 2011 09:15:40 -0500, Jerry Avins <jya@ieee.org> wrote: > >>On 12/27/2011 5:20 AM, Mac Decman wrote: >>> I would like to design filter which has frequency frmo 0 hz to 1mHz >>> with passband equal to all filters. I have dsp which is top notch and >>> will do out of band processing. I would like to make sure all pass >>> band is free from phase modulation so that no problems acure with my >>> delicate process. Can some one help me with this problems. I hope >>> every who contributes to this group has a great holiday seaosn. Hope >>> you all have mary Christmasss and Happy new years,, >> >>MaC, >> >>Language is a problem here. I assume that you want a low-pass filter >>with a cut-off of 1 MHz, flat response in the passband. and linear phase >>response. That calls for an FIR (finite impulse response) filter. >> >>In order to design the filter, you need to know how flat the response >>must be -- nothing is perfect -- how much attenuation you need in the >>stop band, how sharp the cutoff must be (the sharper it is, the more the >>filter will ring) and the sample rate of the signal. Can you supply the >>missing information? >> >>Jerry > > Jerry, > > Sorry, after looking though old posts for hours I just couldn't help > writing a joke post. I thought everyone would see right through it.
Too many folks live the joke, unfortunately. I've stopped trying to joke with strangers by pretending to be crazy or stupid -- there's too many genuine articles out there to get any of the requisite cognitive dissonance for a good laugh. -- My liberal friends think I'm a conservative kook. My conservative friends think I'm a liberal kook. Why am I not happy that they have found common ground? Tim Wescott, Communications, Control, Circuits & Software http://www.wescottdesign.com
Reply by Mac Decman December 27, 20112011-12-27
On Tue, 27 Dec 2011 09:15:40 -0500, Jerry Avins <jya@ieee.org> wrote:

>On 12/27/2011 5:20 AM, Mac Decman wrote: >> I would like to design filter which has frequency frmo 0 hz to 1mHz >> with passband equal to all filters. I have dsp which is top notch and >> will do out of band processing. I would like to make sure all pass >> band is free from phase modulation so that no problems acure with my >> delicate process. Can some one help me with this problems. I hope >> every who contributes to this group has a great holiday seaosn. Hope >> you all have mary Christmasss and Happy new years,, > >MaC, > >Language is a problem here. I assume that you want a low-pass filter >with a cut-off of 1 MHz, flat response in the passband. and linear phase >response. That calls for an FIR (finite impulse response) filter. > >In order to design the filter, you need to know how flat the response >must be -- nothing is perfect -- how much attenuation you need in the >stop band, how sharp the cutoff must be (the sharper it is, the more the >filter will ring) and the sample rate of the signal. Can you supply the >missing information? > >Jerry
Jerry, Sorry, after looking though old posts for hours I just couldn't help writing a joke post. I thought everyone would see right through it. Mark