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

27 Dec '15

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. > I can't try it again until the DRM station broadcasts when I can receive it. I knew I should have recorded the I and Q when I was listening to it! I think this will work (not literally but you get the idea): mkfifo /tmp/radio gqrx > udp:65535 netcat -l -u 65535 > /tmp/radio "mondiale decoder" < /tmp/radio I'll let you know if this works. I'm also open to other suggestions, and still looking at JACK. 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 Frank Sweetser 26 Dec '15

26 Dec '15

I'd bet that you could use netcat do listen ona socket and dump the results directly to a file. On December 26, 2015 6:15:31 PM EST, Andy Stewart <andystewart(a)comcast.net> wrote: > > >Is there a way that I can tie a file to a UDP port? gqrx will output >an >audio stream on a UDP port. If I can make that look like a file, >perhaps "mondiale" will consume it. > >Andy -- Sent from my Android device with K-9 Mail. Please excuse my brevity.

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Re: [Wlug] Audio processing question
by Andy Stewart 26 Dec '15

26 Dec '15

On 12/26/2015 04:13 PM, Steve Revilak wrote: >> Hi gang, >> >> I think I need something like the Virtual audio cable, but I'd like to >> know if there are other possibilities. >> >> I have two audio programs that I want to talk to each other: gqrx and >> Dream. > [..] > > > Jack might be worth a try. http://www.jackaudio.org/ > > Steve Thanks, Steve, I'm looking at it but I'm not finding usage examples that tie together two programs. I'll keep looking. 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 26 Dec '15

26 Dec '15

On 12/26/2015 05:10 PM, John Stoffel wrote: >>>>>> "Andy" == Andy Stewart <andystewart(a)comcast.net> writes: > > Andy> Hi gang, > > Andy> I think I need something like the Virtual audio cable, but I'd like to > Andy> know if there are other possibilities. > > Andy> I have two audio programs that I want to talk to each other: gqrx and > Andy> Dream. > > Andy> gqrx is a software defined radio receiver that can save its audio as a > Andy> WAV file, or it can stream audio via a UDP port. > > Andy> Dream is a digital radio mondiale (DRM) decoder. Digital radio mondiale > Andy> is a shortwave radio broadcast in a digital format. Dream can read a > Andy> WAV file, or it can read audio information from the microphone. It > Andy> outputs a rather nicely sounding radio broadcast (mono or stereo > Andy> depending on the broadcaster) with no static and no fading. > > Andy> I have succeeded in recording gqrx audio to a WAV file, and later having > Andy> Dream decode it. > > 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. Hi John, That is an interesting idea but gqrx doesn't let the user pick a file name for saving the WAV audio. It creates a file name by an internal algorithm. All I can do is pick the directory in which that file is saved. Is there a way that I can tie a file to a UDP port? gqrx will output an audio stream on a UDP port. If I can make that look like a file, perhaps "mondiale" will consume it. 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 26 Dec '15

26 Dec '15

>>>>> "Andy" == Andy Stewart <andystewart(a)comcast.net> writes: Andy> Hi gang, Andy> I think I need something like the Virtual audio cable, but I'd like to Andy> know if there are other possibilities. Andy> I have two audio programs that I want to talk to each other: gqrx and Andy> Dream. Andy> gqrx is a software defined radio receiver that can save its audio as a Andy> WAV file, or it can stream audio via a UDP port. Andy> Dream is a digital radio mondiale (DRM) decoder. Digital radio mondiale Andy> is a shortwave radio broadcast in a digital format. Dream can read a Andy> WAV file, or it can read audio information from the microphone. It Andy> outputs a rather nicely sounding radio broadcast (mono or stereo Andy> depending on the broadcaster) with no static and no fading. Andy> I have succeeded in recording gqrx audio to a WAV file, and later having Andy> Dream decode it. 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.

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Re: [Wlug] Audio processing question
by Steve Revilak 26 Dec '15

26 Dec '15

>Hi gang, > >I think I need something like the Virtual audio cable, but I'd like to >know if there are other possibilities. > >I have two audio programs that I want to talk to each other: gqrx and >Dream. [..] Jack might be worth a try. http://www.jackaudio.org/ Steve

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Audio processing question
by Andy Stewart 26 Dec '15

26 Dec '15

Hi gang, I think I need something like the Virtual audio cable, but I'd like to know if there are other possibilities. I have two audio programs that I want to talk to each other: gqrx and Dream. gqrx is a software defined radio receiver that can save its audio as a WAV file, or it can stream audio via a UDP port. Dream is a digital radio mondiale (DRM) decoder. Digital radio mondiale is a shortwave radio broadcast in a digital format. Dream can read a WAV file, or it can read audio information from the microphone. It outputs a rather nicely sounding radio broadcast (mono or stereo depending on the broadcaster) with no static and no fading. I have succeeded in recording gqrx audio to a WAV file, and later having Dream decode it. What I want to do is listen to the DRM broadcast in real time. I was unsuccessful in getting Dream to read the WAV file while it was being written. Does anybody have any suggestions as to how this could be done? FYI: reception of DRM broadcasts requires an upper sideband radio receiver that is at least 10kHz wide, a decent antenna, and in my case, a DVB-T dongle and the gqrx software coupled with Dream. Thanks in advance for any help you may provide. 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] January WLUG topic... ELK / Graphite / Grafana?
by Higgins, Benjamin John 14 Dec '15

14 Dec '15

Ditto From: wlug-bounces(a)mail.wlug.org [mailto:wlug-bounces@mail.wlug.org] On Behalf Of Eric Martin Sent: Monday, December 14, 2015 11:05 AM To: Worcester Linux Users Group <wlug(a)mail.wlug.org> Subject: Re: [Wlug] January WLUG topic... ELK / Graphite / Grafana? I'm interested On Fri, Dec 11, 2015 at 1:20 PM, Tim Keller <turbofx(a)gmail.com<mailto:turbofx@gmail.com>> wrote: Talking to people last night it sounds like there's some serious interest in collecting / searching / displaying / dashboards. Since I've been working with this stuff, if people are interested I wouldn't mind giving a talk / demo, showing off elasticsearch, logstash, kalbana, graphite, grafana, etc. Are people interested? 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<mailto:Wlug@mail.wlug.org> http://mail.wlug.org/mailman/listinfo/wlug -- Eric Martin

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Re: [Wlug] January WLUG topic... ELK / Graphite / Grafana?
by Eric Martin 14 Dec '15

14 Dec '15

I'm interested On Fri, Dec 11, 2015 at 1:20 PM, Tim Keller <turbofx(a)gmail.com> wrote: > Talking to people last night it sounds like there's some serious interest > in collecting / searching / displaying / dashboards. > > Since I've been working with this stuff, if people are interested I > wouldn't mind giving a talk / demo, showing off elasticsearch, logstash, > kalbana, graphite, grafana, etc. > > Are people interested? > > 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 > > -- Eric Martin

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January WLUG topic... ELK / Graphite / Grafana?
by Tim Keller 11 Dec '15

11 Dec '15

Talking to people last night it sounds like there's some serious interest in collecting / searching / displaying / dashboards. Since I've been working with this stuff, if people are interested I wouldn't mind giving a talk / demo, showing off elasticsearch, logstash, kalbana, graphite, grafana, etc. Are people interested? Thanks, Tim. -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

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