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How to compensate for the passband droop of a Sinc filter with an IIR filter?

Started by daniel zuo October 21, 2005
Randy Yates wrote:
> robert bristow-johnson <rbj@audioimagination.com> writes: > >>[...] > > >>i challenge you to make the case that the DSPRelated.com sig makes >>us *want* to be more helpful or to take the poster more seriously. > > > Anyone I see using such an interface instead of the direct usenet news > interface has an immediate notch against them no matter the content or > demeanor of their post. Why go around the block to go to the bathroom?
Why should anyone care where somebody else chooses to do his business? 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;
in article 435AF87F.8010108@ieee.org, Jerry Avins at jya@ieee.org wrote on
10/22/2005 22:42:

> robert bristow-johnson wrote: > >> ... i can't see how it helps DSPRelated.com to >> include that sig on the bottom of each post coming out. there will be >> backlash because it's unsightly and has no redeeming value. > > So it's an ego thing on Stephane's part. It may not be cool, but he put > a lot of work into the project and that entitles him.
yeah, i see what you mean. i thought it was pure soulless commercial motive (which i think will backfire), but you're probably right. -- r b-j rbj@audioimagination.com "Imagination is more important than knowledge."
Randy Yates wrote:
> robert bristow-johnson <rbj@audioimagination.com> writes: > > [...] > > > i challenge you to make the case that the DSPRelated.com sig makes > > us *want* to be more helpful or to take the poster more seriously. > > Anyone I see using such an interface instead of the direct usenet news > interface has an immediate notch against them no matter the content or > demeanor of their post. Why go around the block to go to the bathroom? > -- > % Randy Yates % "Watching all the days go by... > %% Fuquay-Varina, NC % Who are you and who am I?" > %%% 919-577-9882 % 'Mission (A World Record)', > %%%% <yates@ieee.org> % *A New World Record*, ELO > http://home.earthlink.net/~yatescr
I use Goggle Groups to access newsgroups at work because I do not have newsgroup access at work. I use Google groups to access newsgroups at home because I prefer the interface and because of the searching capability of Google. I would hope the content of my (and everyone else's) posts are judged by their content and not by the type of keyboard I used or the route the packets took to get here. I feel that the "democratization of knowledge" is one of the tenets of the Internet. Mark
robert bristow-johnson wrote:

> so, whether or not you are correct, it's a perception thing, > and i challenge you to make the case that the DSPRelated.com > sig makes us *want* to be more helpful or to take the poster > more seriously.
It is not my case. You say that dropping the sig would in fact make you take posters more seriously because you associate it with low quality. Depending on that perception's mindshare, doing so may pragmatically help DSPRelated.com. I have already explained why I think folks are putting the lever to the wrong stone in making it so. Martin -- No wonder that illegitimate children are commonly the greatest minds; they are the consequence of an hour full of wit, marital ones often arise from boredom. --Theodor Gottlieb von Hippel
"Mark" <makolber@yahoo.com> writes:

> Randy Yates wrote: >> robert bristow-johnson <rbj@audioimagination.com> writes: >> > [...] >> >> > i challenge you to make the case that the DSPRelated.com sig makes >> > us *want* to be more helpful or to take the poster more seriously. >> >> Anyone I see using such an interface instead of the direct usenet news >> interface has an immediate notch against them no matter the content or >> demeanor of their post. Why go around the block to go to the bathroom? >> -- >> % Randy Yates % "Watching all the days go by... >> %% Fuquay-Varina, NC % Who are you and who am I?" >> %%% 919-577-9882 % 'Mission (A World Record)', >> %%%% <yates@ieee.org> % *A New World Record*, ELO >> http://home.earthlink.net/~yatescr > > > I use Goggle Groups to access newsgroups at work because I do not have > newsgroup access at work. I use Google groups to access newsgroups at > home because I prefer the interface and because of the searching > capability of Google.
That is not quite the same thing. Google Groups interfaces with the usenet news system in a manner isomorphic to a news client. DSPRelated does not. Case in point: Usenet users don't see the other responses on DSPRelated to a thread on DSPRelated, even though a post from that thread was tunneled through to usenet.
> I would hope the content of my (and everyone else's) posts are judged > by their content and not by the type of keyboard I used or the route > the packets took to get here. I feel that the "democratization of > knowledge" is one of the tenets of the Internet.
I agree. But how is the requirement to establish an acocunt and identity in DSPRelated contributing to the democratization of knowledge? How is the mongering of information specific to that site, and the potential financial gain to be had by the owners, conducive to democratic knowledge? -- % Randy Yates % "With time with what you've learned, %% Fuquay-Varina, NC % they'll kiss the ground you walk %%% 919-577-9882 % upon." %%%% <yates@ieee.org> % '21st Century Man', *Time*, ELO http://home.earthlink.net/~yatescr
Randy Yates wrote:
>That is not quite the same thing. Google Groups interfaces with the
usenet
>news system in a manner isomorphic to a news client. DSPRelated does
not.
> >Case in point: Usenet users don't see the other responses on >DSPRelated to a thread on DSPRelated, even though a post from that >thread was tunneled through to usenet.
Hi Randy, I am not sure I understand what you mean here. Could you provide an example of a thread where a usenet user "don't see the other responses on DSPRelated to a thread on DSPRelated, even though a post from that thread was tunneled through to usenet" ? I'm confused. Also, what in your view should be done differently so that DSPRelated.com would interface to the usenet news system in a manner isomorphic to a news client? Thanks Stephane This message was sent using the Comp.DSP web interface on www.DSPRelated.com
This discussion is raising some very good points.

Many people are discovering or re-discovering Comp.DSP through
DSPRelated.com and that's why so many messages are originating from this
interface. New users have their first message to Comp.DSP moderated and so
far, I would say that close to 50% of the firsts messages have been
filtered because they where badly written or too off-topic. Although, the
quality has improved since I added a message inviting posters to read the
procedural FAQ on Jerry's web site (
http://users.erols.com/jyavins/procfaq.htm ) and the "comp.dsp culture" on
DSPGuru.com ( http://dspguru.com/comp.dsp/culture2.htm ) before they post a
message.  

I am often wondering if the little ad inserted after each message posted
through the DSPRelated.com interface is good publicity or not for the site
because I agree, some of the messages posted are not of the highest
standards.  Robert's message clearly shows that some people are now
feeling negative emotions when they see the ad and that is surely not in
the site's and poster's best interest, and I'm taking notice.  I do
believe though that the vibes toward the site might improve in the near
future with the introduction of the categories and rating system.   

Thanks for the feedback.

Stephane Boucher

		
This message was sent using the Comp.DSP web interface on
www.DSPRelated.com
in article WMydnTSP_M0mvcDeRVn-uw@giganews.com, stephaneb at
usenet@dsprelated.com wrote on 10/24/2005 13:58:

> I am often wondering if the little ad inserted after each message posted > through the DSPRelated.com interface is good publicity or not for the site > because I agree, some of the messages posted are not of the highest > standards. Robert's message clearly shows that some people are now > feeling negative emotions when they see the ad and that is surely not in > the site's and poster's best interest, and I'm taking notice.
yea! so why not just strip off the text right now, Stephane? why delay? i imagine it's just like editing a sig file. -- r b-j rbj@audioimagination.com "Imagination is more important than knowledge."
in article WMydnTSP_M0mvcDeRVn-uw@giganews.com, stephaneb at
usenet@dsprelated.com wrote on 10/24/2005 13:58:

> Many people are discovering or re-discovering Comp.DSP through > DSPRelated.com and that's why so many messages are originating from this > interface.
oh, and i just wanted to make it clear that i think that DSPRelated.com serves a good purpose. it's just that the ad on the bottom does not help that purpose and is eye trash, at least for me and likely for others. but the real reason to leave the ad off is so that these newbie posters that sometimes post ridiculous stuff do not get easily associated with DSPRelated.com . that way DSPRelated.com does not becomes the AOL of comp.dsp . -- r b-j rbj@audioimagination.com "Imagination is more important than knowledge."
>so why not just strip off the text right now, Stephane? why delay? i >imagine it's just like editing a sig file.
Because the ad serves a purpose of course, which is to promote the site. I understand that your position is that the ad is not helping but rather hindering DSPRelated. If I get the same feedback from a few other regulars here and sense that overall, the sig is a negative thing for DSPRelated.com, then I'll probably move on and strip it. Stephane This message was sent using the Comp.DSP web interface on www.DSPRelated.com