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Re: [Discuss-gnuradio] Discuss-gnuradio Digest, Vol 178, Issue 2
From: |
Martin Braun |
Subject: |
Re: [Discuss-gnuradio] Discuss-gnuradio Digest, Vol 178, Issue 2 |
Date: |
Thu, 24 Aug 2017 13:11:03 -0700 |
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Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 |
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
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> Neil Armstrong Hall of Engineering
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