Re: [Discuss-gnuradio] Discuss-gnuradio Digest, Vol 178, Issue 2

[Martin Braun]

All,

please don't reply to digest emails to the list itself.

Cheers,
Martin

On 08/24/2017 12:16 PM, Zenki wrote:
> 
> On Thu, Aug 24, 2017 at 6:05 AM <address@hidden
> <mailto:address@hidden>> wrote:
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>     Today's Topics:
> 
>        1. Re: Doppler detection (Marcus M?ller)
>        2. Qt GUI: Water falls the wrong direction (Marcus M?ller)
>        3. Re: [GSoC 17] DAB: Updates (Matthias Br?ndli)
> 
> 
>     ----------------------------------------------------------------------
> 
>     Message: 1
>     Date: Thu, 24 Aug 2017 10:31:03 +0200
>     From: Marcus M?ller <address@hidden
>     <mailto:address@hidden>>
>     To: address@hidden <mailto:address@hidden>
>     Subject: Re: [Discuss-gnuradio] Doppler detection
>     Message-ID: <address@hidden
>     <mailto:address@hidden>>
>     Content-Type: text/plain; charset=utf-8
> 
>     Dear Andrew,
> 
>     Hm, this is all getting confusing; an uncommented screenshot doesn't
>     help. Why would you want to pull the doppler shifted signal from a plot
>     (which is a reduced representation of your signal), if you have access
>     to the original signal?
> 
>     Also, you're still very much only describing in, at least for me, who
>     has not worked on the same radars as long as you did, admittedly, very
>     vague terms what you want to *do*, not *what problem* you need help
>     with.
> 
>     Can you please simply write a question that is very coherent? It might
>     help if you imagine you're writing to someone who has no idea of what
>     your signals are, or in fact, someone who's completely ignorant of
>     Doppler radar; we simply might not be as smart as you think we are, or
>     we simply might not implicitly assume the same things that you can
>     assume. In fact, your descriptions aren't really enlightening to us.
> 
>     I know that will make your email a lot longer, but, having (hopefully)
>     helped quite a few people on the mailing list, taking a step back and
>     describing a problem from the ground up *really* makes a lot of
>     difference for people trying to assist you.
> 
>     Best regards,
> 
>     Marcus
> 
> 
> 
> 
> 
>     ------------------------------
> 
>     Message: 2
>     Date: Thu, 24 Aug 2017 12:16:51 +0200
>     From: Marcus M?ller <address@hidden <mailto:address@hidden>>
>     To: GNURadio Discussion List <address@hidden
>     <mailto:address@hidden>>
>     Subject: [Discuss-gnuradio] Qt GUI: Water falls the wrong direction
>     Message-ID: <address@hidden
>     <mailto:address@hidden>>
>     Content-Type: text/plain; charset="utf-8"; format=flowed
> 
>     Hi Folks,
> 
>     while discussing the DABstep GUI's developer mode, we noticed that the
>     QT GUI Waterfall sink doesn't fully deserve that name. It's a waterrise
>     sink:
> 
>     http://marcus.hostalia.de/waterfall.webm
> 
>     Is there a (maybe unexposed) property to change the direction of flow?
> 
>     Cheers,
>     Marcus
> 
> 
> 
> 
>     ------------------------------
> 
>     Message: 3
>     Date: Thu, 24 Aug 2017 14:35:00 +0200
>     From: Matthias Br?ndli <address@hidden <mailto:address@hidden>>
>     To: address@hidden <mailto:address@hidden>
>     Subject: Re: [Discuss-gnuradio] [GSoC 17] DAB: Updates
>     Message-ID: <address@hidden
>     <mailto:address@hidden>>
>     Content-Type: text/plain; charset=windows-1252
> 
>     Hello Marcus, Hello all,
> 
>     On 19/08/17 15:00, Marcus M?ller wrote:
>     > So, if you'd want to wrap that, you'd be very much more than
>     welcome! In
>     > fact, I'd head over to [1], and look at mp4_encode_sb , rip out
>     the DAB+
>     > specific parametrizations and put in the DRM specific ones (but I'm,
>     > alas, not aware which those are).
> 
>     FDK-AAC defines additional AOTs that are DRM+ specific, in the same way
>     it does for DAB+. The code even contains some remnants of DRM+ logic,
>     but I cannot assess how much is missing. It should be possible to modify
>     the library to be compatible with both DAB+ and DRM.
> 
>     The frame lengths might be the same because both use the 960 transform
>     length, however the framing at the output is probably different, as we
>     had to add the DAB+ one.
> 
>     I'd be happy to accepts patches for this against the fdk-aac fork at
>     https://github.com/Opendigitalradio/fdk-aac
> 
>     Supporting an open-source implementation of DRM+ is very much in-line
>     with the goals of the Opendigitalradio association!
> 
>     Best,
>     Matthias
> 
> 
> 
>     ------------------------------
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>     ------------------------------
> 
>     End of Discuss-gnuradio Digest, Vol 178, Issue 25
>     *************************************************
> 
> -- 
> Yao-Cheng Lin
> Graduate Student
> School of Aeronautics and Astronautics
> Purdue University
> 
> Neil Armstrong Hall of Engineering
> 701 West Stadium Ave
> West Lafayette, IN 47907
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