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Re: [Wlug] How to manipulate audio (ALSA) a lot with a HD audio card?

by E Johnson

I can't answer these questions, but have a question about one idea in here. > WIth this capability of course I could record audio from my computer in say, Audacity, or I could even broadcast audio through Skype. I don't think broadcasting audio (would this be music??) through Skype would create the greatest audio, since Skype is so sensitive to packet loss & all. Each (small) packet has to be received at its destination in perfect order, and on-time. If one or more hops that your signal is taking is running slow (as it gets in Worcester in the evenings), then packets get lost and have to be resubmitted. Check your technical details next time you're in a skype convo, then do a traceroute on the IP of your skype contact --you can see this happening. If this is the case when you're sending recorded audio through it, you would be likely to suffer from chopped-up sound, which happens in skype a lot. So if you broadcast through skype and there's a lot of latency, or if your router is swamped because there's a lot of traffic inside of your network, then you would end up making square waves in the skype out of what probably started out as a perfectly nice audio signal. You could try to counteract that (I guess) by running some kind of QOS in your router, but even that itself slows the router down a little bit, as every packet has to be evaluated according to your QOS table. Just wondering. Liz J On 1 April 2010 10:14, Tatsh <ddrtist(a)gmail.com> wrote: > Stupid Intel decided to build-in DRM into the spec of these things. I have > a > Conexant which has Nvidia codec to provide audio for the HDMI output (this > works fine except that in alsa settings I have to force a default output > device, 3). > > What I'd like to do is be able to record from the stereo mixer, which I > have > none in alsamixer. So how do I go about creating one? I've tried a few > different configs I found on-line but nothing seemed to work for me. > > WIth this capability of course I could record audio from my computer in > say, > Audacity, or I could even broadcast audio through Skype. And the best part > would be if I could broadcast audio through Skype AND use my headset at the > same time (mixing the 2 into one channel input). I have 3 mic inputs > apparently (one of them is webcam, another is the jack, and I don't know > what > the 3rd one is). > > Image of KMix: http://bitpic.net/image/kmix-nvidia-hd-audio-codec > > So far I know it's something I can do with ALSA settings where I can tell > ALSA > to redirect audio and 'copy' whatever is going on on any input channel > (overriding the jack of course). No luck there yet. > > Any help appreciated > Thanks > -- > Tatsh > www.bitpic.net > www.tatsh.net > ddrtist(a)gmail.com > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug >

April 2, 2010

Re: [Wlug] Use Drupal On The Web Site - Wlug Digest, Vol 78, Issue 1

by Steven Greenberg

I am all in favor of Jeff's suggestion. I first tested Drupal on my personal web site (http://www.ssgreenberg.name/Drupal/Drupal/) I then convinced my Square Dance Club to let me work with the Webmaster to convert that site to Drupal. We have had nothing but raves from the readers since we converted. http://www.hayloftsteppers.org/ When judging the site, remember, we are (or were) engineers, not artists. /Steve > ------------------------------------------------------------------------ > > Subject: > Re: [Wlug] the website is in need of some love > From: > Tatsh <ddrtist(a)gmail.com> > Date: > Thu, 1 Apr 2010 10:05:30 -0400 > To: > wlug(a)mail.wlug.org > > To: > wlug(a)mail.wlug.org > > > Would be cool to do it over in Drupal. > > NOT JOOMLA (should be called 'piece of crap please give up already!')! > > All you need is a blog post system (built-in) to write about events, and add > custom fields like time if you want, etc etc. From a design stand point, there > is no reason to use images for the textual links, especially obviously > compressed JPEGs. > > Late > > Jeff Moyer wrote: >> I'm not sure who maintains it, but it's in a very sad state at the >> moment. >> >> Cheers, >> Jeff -- Steven Greenberg Email: steve(a)ssgreenberg.name 251 Holland Rd. Phone: (774)241-0095 Fiskdale, Massachusetts 01518-1231 Web: http://www.ssgreenberg.name Other Email: s.greenberg(a)ieee.org ssg(a)alum.mit.edu

April 1, 2010

Re: [Wlug] the website is in need of some love

by Chuck Anderson

On Thu, Apr 01, 2010 at 09:20:44AM -0400, Jeff Moyer wrote: > I'm not sure who maintains it, but it's in a very sad state at the > moment. Congratulations! You've just been volunteered to enhance it! :-) But hey, at least it validates now. Seriously though, if anyone would like to help, feel free to email me. There was a time when I was playing with Moin for a wiki site but that fell by the wayside. I really need to rebuild the system that the web server is running on, so I could deploy something new/better if there was someone who would commit to helping maintain it. I just don't have the time to do anything fancy, learn new web frameworks, etc. Alternatively, people could submit some designs, code, and content that uses plain HTML/CSS and I could maintain that manually.

April 1, 2010

How to manipulate audio (ALSA) a lot with a HD audio card?

by Tatsh

Stupid Intel decided to build-in DRM into the spec of these things. I have a Conexant which has Nvidia codec to provide audio for the HDMI output (this works fine except that in alsa settings I have to force a default output device, 3). What I'd like to do is be able to record from the stereo mixer, which I have none in alsamixer. So how do I go about creating one? I've tried a few different configs I found on-line but nothing seemed to work for me. WIth this capability of course I could record audio from my computer in say, Audacity, or I could even broadcast audio through Skype. And the best part would be if I could broadcast audio through Skype AND use my headset at the same time (mixing the 2 into one channel input). I have 3 mic inputs apparently (one of them is webcam, another is the jack, and I don't know what the 3rd one is). Image of KMix: http://bitpic.net/image/kmix-nvidia-hd-audio-codec So far I know it's something I can do with ALSA settings where I can tell ALSA to redirect audio and 'copy' whatever is going on on any input channel (overriding the jack of course). No luck there yet. Any help appreciated Thanks -- Tatsh www.bitpic.net www.tatsh.net ddrtist(a)gmail.com

April 1, 2010

Re: [Wlug] the website is in need of some love

by Tatsh

Would be cool to do it over in Drupal. NOT JOOMLA (should be called 'piece of crap please give up already!')! All you need is a blog post system (built-in) to write about events, and add custom fields like time if you want, etc etc. From a design stand point, there is no reason to use images for the textual links, especially obviously compressed JPEGs. Late Jeff Moyer wrote: > I'm not sure who maintains it, but it's in a very sad state at the > moment. > > Cheers, > Jeff > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- Tatsh www.tatsh.net ddrtist(a)gmail.com

April 1, 2010

the website is in need of some love

by Jeff Moyer

I'm not sure who maintains it, but it's in a very sad state at the moment. Cheers, Jeff

April 1, 2010

Re: [Wlug] interesting article on RAID

by John Stoffel

Theo> Yeah, it's complicated by the fact that a lot of RAID systems Theo> will consider any I/O error to mean the entire device is bad. This is why Netapp has moved to their double-parity raid sets. It's a help, but not perfect. I'm going to read the article in a few and then comment in particular. Theo> ZFS does a particularly good job here, I've seen single raidz2 Theo> sets able to recover from having 4 simultaneously failing disks. Now that's interesting. How was performance during this issue? Theo> I've had other vendor's arrays start failing disks while Theo> reconstructing from a single failure. Thankfully it was only 1 Theo> additional failure on a 2 parity set. Still PITA. I once had a double disk failure in a Netapp. Ouch! This was before their double parity stuff was widely deployed. One disk died due to head problems, the other died due to the controller board on the disk dying. I managed to swap the good board from the bad hardware disk onto the good hardware, bad board disk, re-insert it and have the system come back up and rebuild. Big sigh of relief there for sure! Another thing I like about alot of newer raid implementations (including Linux RAID, assuming you use it) is the consistency checks or scrubbing that you can run, to hopefully catch errors before they become problems. Reading the disk(s) and checking blocks for consistency, and even re-writing them to make sure the data is good. John

March 12, 2010

Re: [Wlug] interesting article on RAID

by Theo Van Dinter

Yeah, it's complicated by the fact that a lot of RAID systems will consider any I/O error to mean the entire device is bad. ZFS does a particularly good job here, I've seen single raidz2 sets able to recover from having 4 simultaneously failing disks. I've had other vendor's arrays start failing disks while reconstructing from a single failure. Thankfully it was only 1 additional failure on a 2 parity set. Still PITA. On Thu, Mar 11, 2010 at 8:09 PM, Chuck Anderson <cra(a)wpi.edu> wrote: > Triple-Parity RAID and Beyond > by Adam Leventhal | December 17, 2009 > > http://queue.acm.org/detail.cfm?id=1670144 > > As hard-drive capacities continue to outpace their throughput, the > time has come for a new level of RAID.

March 12, 2010

interesting article on RAID

by Chuck Anderson

Triple-Parity RAID and Beyond by Adam Leventhal | December 17, 2009 http://queue.acm.org/detail.cfm?id=1670144 As hard-drive capacities continue to outpace their throughput, the time has come for a new level of RAID. -- - Chuck (372 Days until IPv4 depletion: http://ipv4depletion.com/)

March 12, 2010

Meeting: BtrFS: Now (Thurs March 11 7pm)

by Chuck Anderson

Frank is giving a talk on BtrFS right now. It seems the website wasn't updated (but is now). -- - Chuck (372 Days until IPv4 depletion: http://ipv4depletion.com/) On Mon, Feb 22, 2010 at 06:18:44AM -0500, Frank Sweetser wrote: > I've noticed that not too many people have putting in meeting topic requests, > so I thought that if anyone's interested I'd volunteer to throw together some > slides on BtrFS. > > For those of you who haven't heard of it, BtrFS is the next generation linux > filesystem. Though still in heavy development, it was included in the > mainstream kernel last year. It promises to scale to filesystems well beyond > what any of the current offerings can handle (including ext4), as well as > offering far greater flexibility and better data security for data admins. > > If you have anything else that you'd like to hear about, either instead of or > in addition to BtrFS, chime in, and hopefully someone else on the list will be > able to make it happen! > > -- > Frank Sweetser fs at wpi.edu | For every problem, there is a solution that > WPI Senior Network Engineer | is simple, elegant, and wrong. - HL Mencken > GPG fingerprint = 6174 1257 129E 0D21 D8D4 E8A3 8E39 29E3 E2E8 8CEC

March 12, 2010