Re: Alex: Disorder or IRC server.
Lara Geary via Openeeg-list <[email protected]> Thu, 10 Aug 2023 11:13:17 +0100
| Newsgroups | gmane.comp.science.openeeg.general |
|---|---|
| Message-ID | <[email protected]> |
--===============2049992600123677299== Content-Type: multipart/alternative; boundary=Apple-Mail-F375EDAC-6850-4FA9-87DB-C738CC60D7B4 Content-Transfer-Encoding: 7bit --Apple-Mail-F375EDAC-6850-4FA9-87DB-C738CC60D7B4 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Fantastic offer Alex, thankyou=20 Lara > On 10 Aug 2023, at 09:58, Graham Smith <[email protected]> wrote: >=20 > =EF=BB=BF > Thanks for the offer, Alex. >=20 > I vote, : "Yes". >=20 > Graham >=20 >=20 >> On Thu, 10 Aug 2023, 2:58 pm , <[email protected]= t> wrote: >> Send Openeeg-list mailing list submissions to >> [email protected] >>=20 >> To subscribe or unsubscribe via the World Wide Web, visit >> https://lists.sourceforge.net/lists/listinfo/openeeg-list >> or, via email, send a message with subject or body 'help' to >> [email protected] >>=20 >> You can reach the person managing the list at >> [email protected] >>=20 >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of Openeeg-list digest..." >>=20 >>=20 >> Today's Topics: >>=20 >> 1. Re: Besselworth calculations (Alexander Houston) >>=20 >>=20 >> ---------------------------------------------------------------------- >>=20 >> Message: 1 >> Date: Wed, 9 Aug 2023 22:57:53 -0400 >> From: Alexander Houston <[email protected]> >> To: "Discussion of EEG hardware, software, training protocols, NFB >> theory - for developers and users." >> <[email protected]> >> Subject: Re: [Openeeg-list] Besselworth calculations >> Message-ID: >> <[email protected]= om> >> Content-Type: text/plain; charset=3D"utf-8" >>=20 >> All, >>=20 >> Would anybody be opposed to creating a discord or IRC server for this >> project? The state of things right now is not friendly for newcomers to t= he >> project, as most everything is scattered around old wikis, codebases, and= >> posts on this mailing list. Many links to the original sourceforge projec= ts >> are only accessible via archival sites like Wayback. >>=20 >> As a newcomer myself, I don't feel it's my place to admin over a server >> like this. However, I'm happy to create one if interest is high but >> familiarity with discord is low. >>=20 >> OpenEEG is a banger hobby concept and it deserves to be accessible in a >> post web 1.0 world ? >>=20 >> Steve: sadly I cannot even begin to comprehend your question, sorry! >>=20 >> Best, >> Alex. >>=20 >> On Wed, Aug 9, 2023 at 10:42?PM Stephen McInturff < >> [email protected]> wrote: >>=20 >> > Hello, >> > >> > I'm not sure if this project is still ongoing but I'm going to post and= >> > wish for the best. >> > >> > I am attempting to build an Auditory Brainstem Response (ABR) amplifier= . >> > The circuit is very much the same as the designs for the "modularEEG" >> > except that the filters are different (I want 300-3kHz while the curren= t >> > designs are mostly <100 Hz). This would mainly involve modifying the >> > "besselworth filter", see screenshot below. >> > >> > My question is how was the cutoff frequency of 59Hz calculated? The >> > equations I've found for this are Fc =3D 1/(2*pi*sqrt(R232*R288*C234*C2= 31)) >> > which equals 152.5 Hz and the gain calculation Gain =3D (1+R230/R229) =3D= 13.19x >> > >> > Could someone help explain how these numbers were calculated in the >> > schematic? I understand that the 3rd pole of this filter is on the digi= tal >> > board but how would that play into the calculations? >> > >> > Thank you, >> > Steve Mci >> > >> > [image: image.png] >> > _______________________________________________ >> > Openeeg-list mailing list >> > [email protected] >> > https://lists.sourceforge.net/lists/listinfo/openeeg-list >> > Go to the above address to change your >> > subscription options, e.g unsubscribe. >> > >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> -------------- next part -------------- >> A non-text attachment was scrubbed... >> Name: image.png >> Type: image/png >> Size: 185278 bytes >> Desc: not available >>=20 >> ------------------------------ >>=20 >>=20 >>=20 >> ------------------------------ >>=20 >> Subject: Digest Footer >>=20 >> _______________________________________________ >> Openeeg-list mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/openeeg-list >>=20 >>=20 >> ------------------------------ >>=20 >> End of Openeeg-list Digest, Vol 152, Issue 3 >> ******************************************** > _______________________________________________ > Openeeg-list mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/openeeg-list > Go to the above address to change your > subscription options, e.g unsubscribe. --Apple-Mail-F375EDAC-6850-4FA9-87DB-C738CC60D7B4 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D= utf-8"></head><body dir=3D"auto">Fantastic offer Alex, thankyou <br><br= ><div dir=3D"ltr">Lara<div><br></div></div><div dir=3D"ltr"><br><blockquote t= ype=3D"cite">On 10 Aug 2023, at 09:58, Graham Smith <[email protected]&g= t; wrote:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"lt= r">=EF=BB=BF<div dir=3D"auto"><div>Thanks for the offer, Alex.</div><div dir= =3D"auto"><br>I vote, : "Yes".</div><div dir=3D"auto"><br></div><div dir=3D"= auto">Graham</div><div dir=3D"auto"><br></div><div dir=3D"auto"><br><div cla= ss=3D"gmail_quote" dir=3D"auto"><div dir=3D"ltr" class=3D"gmail_attr">On Thu= , 10 Aug 2023, 2:58 pm , <<a href=3D"mailto:[email protected]= urceforge.net">[email protected]</a>> wrote:<br>= </div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le= ft:1px #ccc solid;padding-left:1ex">Send Openeeg-list mailing list submissio= ns to<br> <a href=3D"mailto:[email protected]= .net" target=3D"_blank" rel=3D"noreferrer">[email protected]= t</a><br> <br> To subscribe or unsubscribe via the World Wide Web, visit<br> <a href=3D"https://lists.sourceforge.net/lists/l= istinfo/openeeg-list" rel=3D"noreferrer noreferrer" target=3D"_blank">https:= //lists.sourceforge.net/lists/listinfo/openeeg-list</a><br> or, via email, send a message with subject or body 'help' to<br> <a href=3D"mailto:[email protected]= rceforge.net" target=3D"_blank" rel=3D"noreferrer">openeeg-list-request@list= s.sourceforge.net</a><br> <br> You can reach the person managing the list at<br> <a href=3D"mailto:[email protected]= eforge.net" target=3D"_blank" rel=3D"noreferrer">[email protected]= urceforge.net</a><br> <br> When replying, please edit your Subject line so it is more specific<br> than "Re: Contents of Openeeg-list digest..."<br> <br> <br> Today's Topics:<br> <br> 1. Re: Besselworth calculations (Alexander Houston)<br> <br> <br> ----------------------------------------------------------------------<br> <br> Message: 1<br> Date: Wed, 9 Aug 2023 22:57:53 -0400<br> From: Alexander Houston <<a href=3D"mailto:[email protected]" target=3D= "_blank" rel=3D"noreferrer">[email protected]</a>><br> To: "Discussion of EEG hardware, software, training protocols, NFB<br> theory - for developers and users."<br> <<a href=3D"mailto:[email protected]= orge.net" target=3D"_blank" rel=3D"noreferrer">[email protected]= e.net</a>><br> Subject: Re: [Openeeg-list] Besselworth calculations<br> Message-ID:<br> <<a href=3D"mailto:CAEBVZDCND0-BhLZtfha0BMe4t= T-O_ne0--4SH%[email protected]" target=3D"_blank" rel=3D"norefer= rer">CAEBVZDCND0-BhLZtfha0BMe4tT-O_ne0--4SH+Fb5M4szxYTeg@mail.gmail.com</a>&= gt;<br> Content-Type: text/plain; charset=3D"utf-8"<br> <br> All,<br> <br> Would anybody be opposed to creating a discord or IRC server for this<br> project? The state of things right now is not friendly for newcomers to the<= br> project, as most everything is scattered around old wikis, codebases, and<br= > posts on this mailing list. Many links to the original sourceforge projects<= br> are only accessible via archival sites like Wayback.<br> <br> As a newcomer myself, I don't feel it's my place to admin over a server<br> like this. However, I'm happy to create one if interest is high but<br> familiarity with discord is low.<br> <br> OpenEEG is a banger hobby concept and it deserves to be accessible in a<br> post web 1.0 world ?<br> <br> Steve: sadly I cannot even begin to comprehend your question, sorry!<br> <br> Best,<br> Alex.<br> <br> On Wed, Aug 9, 2023 at 10:42?PM Stephen McInturff <<br> <a href=3D"mailto:[email protected]" target=3D"_blank" rel=3D"noref= errer">[email protected]</a>> wrote:<br> <br> > Hello,<br> ><br> > I'm not sure if this project is still ongoing but I'm going to post and= <br> > wish for the best.<br> ><br> > I am attempting to build an Auditory Brainstem Response (ABR) amplifier= .<br> > The circuit is very much the same as the designs for the "modularEEG"<b= r> > except that the filters are different (I want 300-3kHz while the curren= t<br> > designs are mostly <100 Hz). This would mainly involve modifying the= <br> > "besselworth filter", see screenshot below.<br> ><br> > My question is how was the cutoff frequency of 59Hz calculated? The<br>= > equations I've found for this are Fc =3D 1/(2*pi*sqrt(R232*R288*C234*C2= 31))<br> > which equals 152.5 Hz and the gain calculation Gain =3D (1+R230/R229) =3D= 13.19x<br> ><br> > Could someone help explain how these numbers were calculated in the<br>= > schematic? I understand that the 3rd pole of this filter is on the digi= tal<br> > board but how would that play into the calculations?<br> ><br> > Thank you,<br> > Steve Mci<br> ><br> > [image: image.png]<br> > _______________________________________________<br> > Openeeg-list mailing list<br> > <a href=3D"mailto:[email protected]" target=3D"_blank"= rel=3D"noreferrer">[email protected]</a><br> > <a href=3D"https://lists.sourceforge.net/lists/listinfo/openeeg-list" r= el=3D"noreferrer noreferrer" target=3D"_blank">https://lists.sourceforge.net= /lists/listinfo/openeeg-list</a><br> > Go to the above address to change your<br> > subscription options, e.g unsubscribe.<br> ><br> -------------- next part --------------<br> An HTML attachment was scrubbed...<br> -------------- next part --------------<br> A non-text attachment was scrubbed...<br> Name: image.png<br> Type: image/png<br> Size: 185278 bytes<br> Desc: not available<br> <br> ------------------------------<br> <br> <br> <br> ------------------------------<br> <br> Subject: Digest Footer<br> <br> _______________________________________________<br> Openeeg-list mailing list<br> <a href=3D"mailto:[email protected]" target=3D"_blank" rel=3D= "noreferrer">[email protected]</a><br> <a href=3D"https://lists.sourceforge.net/lists/listinfo/openeeg-list" rel=3D= "noreferrer noreferrer" target=3D"_blank">https://lists.sourceforge.net/list= s/listinfo/openeeg-list</a><br> <br> <br> ------------------------------<br> <br> End of Openeeg-list Digest, Vol 152, Issue 3<br> ********************************************<br> </blockquote></div></div></div> <span>_______________________________________________</span><br><span>Openee= g-list mailing list</span><br><span>[email protected]</span= ><br><span>https://lists.sourceforge.net/lists/listinfo/openeeg-list</span><= br><span>Go to the above address to change your</span><br><span>subscription= options, e.g unsubscribe.</span><br></div></blockquote></body></html>= --Apple-Mail-F375EDAC-6850-4FA9-87DB-C738CC60D7B4-- --===============2049992600123677299== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline --===============2049992600123677299== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline