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Re: [Wlug] My "modern" FEDORA is working fine.
by John Stoffel 21 Jan '16

21 Jan '16

>>>>> "Andy" == Andy Stewart <andystewart(a)comcast.net> writes: Andy> On 01/20/2016 03:48 PM, Ken Jones wrote: >> Here’a shot of the GIMP. Andy, Is there anyone around who might know >> the SUN ULTRA!? When I power up a bell rings and the lights flash then >> nothing...... It has a reworked power supply installed this morning. >> PACMAN_FEDORA_GIMP >> Ken Andy> Sorry, Ken, I don't know of anybody, off hand, that knows/knew/remembers Andy> the Sun Ultra. Which model Ultra? I spent alot of time on the Ultra 1 140/170 models, Ultra 2 (still got one running at work!), along with Ultra 5/10 and newer. You need to provide more details on the exact model, and also let us know what other elements the system has in it. Do you have it on a serial console or a monitor? Finding those old Sun 13W3 monitor connectors is a pain, though I probably have some kicking around to goto VGA if I look hard enough. For the Ultra 1 series, make sure the CPU fan spins. They had a heck of a time with them dying and then overheating. The Ultra 2 is a slightly simpler beast, but I'd just pull one of the two procesors and all but two sticks of memory. As I recall, you want it in some certain slot order, not right next to each other. Pull the disks, they're not needed at this point, you want to see what the BIOS shows on bootup first. And if you don't have a monitor and keyboard hooked up, then you will want a 9600 serial connection. John

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Re: [Wlug] My "modern" FEDORA is working fine.
by Andy Stewart 20 Jan '16

20 Jan '16

On 01/20/2016 03:48 PM, Ken Jones wrote: > Here’a shot of the GIMP. Andy, Is there anyone around who might know > the SUN ULTRA!? When I power up a bell rings and the lights flash then > nothing...... It has a reworked power supply installed this morning. > PACMAN_FEDORA_GIMP > Ken Sorry, Ken, I don't know of anybody, off hand, that knows/knew/remembers the Sun Ultra. Andy -- Andy Stewart (KB1OIQ) Founder: Worcester Linux Users' Group Founder: Chelmsford Linux Meetup Group President: PART of Westford, MA (WB1GOF)

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LOCATION CHANGE: WLUG Meeting Jan. 14th @7pm WPI Rec Center Class of '61 Meeting Room
by Chuck Anderson 14 Jan '16

14 Jan '16

Frank tells me he booked the same location as last month: WPI Sports and Recreation Center room 412 - Class of '61 Meeting Room So don't go to the Campus Center, no one will be there! On Tue, Jan 12, 2016 at 09:30:43AM -0500, Tim Keller wrote: > Hey Gang, > > Sorry for the late email, it's been hectic at my end of things. > > Here are the facts! > Date & Time: January 17th, 2016 @ 7PM > Location: WPI Student Center Mid Century Room (rm 331) > Topic: None* > > *There's currently no topic ... I contemplated talking, but never got stuff > together. > > Due to a scheduling conflict, I'll be unable to attend... so if someone > else would like to step up for snacks and refreshments that would be quite > helpful. > > I know people had a busy holidays, so my plan *was* for this to just be a > general meeting anyway. We can get our heads around what we'd like for > speakers for the coming year. > > My hope is to get my buddy Nick to do a deep dive talk about encryption in > February. > I know Greg had mentioned speaking about setting up a radio station. > Please submit any suggestions! > > Thanks, > Tim. > > -- > I am leery of the allegiances of any politician who refers to their > constituents as "consumers". > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug -- - Chuck (0 Days until IPv4 depletion: http://ipv4depletion.com/)

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WLUG Meeting Jan. 14th @7pm WPI Mid century Room (rm 331)
by Tim Keller 12 Jan '16

12 Jan '16

Hey Gang, Sorry for the late email, it's been hectic at my end of things. Here are the facts! Date & Time: January 17th, 2016 @ 7PM Location: WPI Student Center Mid Century Room (rm 331) Topic: None* *There's currently no topic ... I contemplated talking, but never got stuff together. Due to a scheduling conflict, I'll be unable to attend... so if someone else would like to step up for snacks and refreshments that would be quite helpful. I know people had a busy holidays, so my plan *was* for this to just be a general meeting anyway. We can get our heads around what we'd like for speakers for the coming year. My hope is to get my buddy Nick to do a deep dive talk about encryption in February. I know Greg had mentioned speaking about setting up a radio station. Please submit any suggestions! Thanks, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

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Re: [Wlug] Audio processing question
by John Stoffel 28 Dec '15

28 Dec '15

Andy> I thought so, too, but I cannot find a menu option or a command Andy> line option to do it. Am I blind? :-) I'm running dream Andy> version 2.1.1-svn808. In the SNAPSHOTS directory on sf.net, I Andy> see dream-935 from Nov 2014 which is more recent but when I Andy> compile it, it segfaults upon execution. Hmm... maybe they have some newer code elsewhere? I'm not sure how I could help at this point, beyond trying to compile the code with debug info and then pulling it into gdb to get a backtrace. I suspect you'll have to ask on the mailing list for dream, since what I see on the web page implies that network stuff works... but not sure. I would think that dream could just pull the data directly from the radio itself, to cut out the middle man here.

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Re: [Wlug] Audio processing question
by Andy Stewart 28 Dec '15

28 Dec '15

On 12/27/2015 05:38 PM, John Stoffel wrote: >>>>>> "Andy" == Andy Stewart <andystewart(a)comcast.net> writes: > > Andy> Closer: > > Andy> nc -l -u 65535 | sox -r 48k -b 16 -c 1 -L -e signed -t raw - \ > Andy> -t wav radio.wav > > Andy> ...but....the mondiale decoder doesn't like reading radio.wav: > > Andy> sox WARN wav: Length in output .wav header will be wrong since can't > Andy> seek to fix it.. > > Andy> Still plugging away...... > > So what mondiale decoder are you using, dream from sourceforge? I've > just poked at the dream web page and it looks like it's got network > input support, so I'm wondering if you cant' get the data from gprx -> > nc -> dream -> speakers > > to do the decoding. Hi John, I thought so, too, but I cannot find a menu option or a command line option to do it. Am I blind? :-) I'm running dream version 2.1.1-svn808. In the SNAPSHOTS directory on sf.net, I see dream-935 from Nov 2014 which is more recent but when I compile it, it segfaults upon execution. Andy -- Andy Stewart (KB1OIQ) Founder: Worcester Linux Users' Group Founder: Chelmsford Linux Meetup Group President: PART of Westford, MA (WB1GOF)

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Re: [Wlug] Audio processing question
by John Stoffel 27 Dec '15

27 Dec '15

>>>>> "Andy" == Andy Stewart <andystewart(a)comcast.net> writes: Andy> Closer: Andy> nc -l -u 65535 | sox -r 48k -b 16 -c 1 -L -e signed -t raw - \ Andy> -t wav radio.wav Andy> ...but....the mondiale decoder doesn't like reading radio.wav: Andy> sox WARN wav: Length in output .wav header will be wrong since can't Andy> seek to fix it.. Andy> Still plugging away...... So what mondiale decoder are you using, dream from sourceforge? I've just poked at the dream web page and it looks like it's got network input support, so I'm wondering if you cant' get the data from gprx -> nc -> dream -> speakers to do the decoding. John

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Re: [Wlug] Audio processing question
by Andy Stewart 27 Dec '15

27 Dec '15

On 12/27/2015 01:01 PM, Andy Stewart wrote: > Here's a command that works, to give you a feel for the data formats > involved: > > gqrx outputs RAW audio data to UDP port 65535 > netcat -l -u 65535 | aplay -r 48k -f S16_LE -t raw -c 1 > correct audio is heard > > Now, I want to get that into a WAV file or perhaps a fifo from which the > mondiale decoder could get its input. > > netcat -l -u 65535 | sox ??? > > The man page for sox is not for the faint of heart, and I'm not an audio > expert. > > Any ideas? > > Thanks! > > Andy > Closer: nc -l -u 65535 | sox -r 48k -b 16 -c 1 -L -e signed -t raw - \ -t wav radio.wav ...but....the mondiale decoder doesn't like reading radio.wav: sox WARN wav: Length in output .wav header will be wrong since can't seek to fix it.. Still plugging away...... Andy -- Andy Stewart (KB1OIQ) Founder: Worcester Linux Users' Group Founder: Chelmsford Linux Meetup Group President: PART of Westford, MA (WB1GOF)

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Re: [Wlug] Audio processing question
by Andy Stewart 27 Dec '15

27 Dec '15

On 12/26/2015 07:32 PM, Andy Stewart wrote: > On 12/26/2015 06:17 PM, Frank Sweetser wrote: >> I'd bet that you could use netcat do listen ona socket and dump the results directly to a file. OK, I'm getting closer. It turns out that the UDP audio stream is RAW. The "mondiale decoder" wants to see WAV data. I think I need the correct incantation of the sox command. Here's a command that works, to give you a feel for the data formats involved: gqrx outputs RAW audio data to UDP port 65535 netcat -l -u 65535 | aplay -r 48k -f S16_LE -t raw -c 1 correct audio is heard Now, I want to get that into a WAV file or perhaps a fifo from which the mondiale decoder could get its input. netcat -l -u 65535 | sox ??? The man page for sox is not for the faint of heart, and I'm not an audio expert. Any ideas? Thanks! Andy -- Andy Stewart (KB1OIQ) Founder: Worcester Linux Users' Group Founder: Chelmsford Linux Meetup Group President: PART of Westford, MA (WB1GOF)

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Re: [Wlug] Audio processing question
by John Stoffel 27 Dec '15

27 Dec '15

>>>>> "Andy" == Andy Stewart <andystewart(a)comcast.net> writes: Andy> What I want to do is listen to the DRM broadcast in real time. I was Andy> unsuccessful in getting Dream to read the WAV file while it was being Andy> written. >> Andy> Does anybody have any suggestions as to how this could be done? >> >> Have you tried setting up a FIFO that each program opens and treats as >> a WAV file? That might be the way to have them talk to each other. >> >>> mkfifo /var/tmp/radio >>> gqrx --output /var/tmp/radio >>> mondiale --input /var/tmp/radio >> >> though I havent' a clue what the two programs do at the commmand >> level. Andy> That is an interesting idea but gqrx doesn't let the user pick a Andy> file name for saving the WAV audio. It creates a file name by Andy> an internal algorithm. All I can do is pick the directory in Andy> which that file is saved. Andy> Is there a way that I can tie a file to a UDP port? gqrx will Andy> output an audio stream on a UDP port. If I can make that look Andy> like a file, perhaps "mondiale" will consume it. Hmm... maybe using 'nc' (netcat) to listen to that UDP port and then feed the info into either the FIFO or directly into the other tool? Are they open source? It might just be time to hack some source to do what you want... I also think the JACK audio thing might work, where you setup some virtual Mics and Feeds to connect the two programs together. John

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