Hi Ido
The nature of your questions imply that their answers need to be long
and probably it is best to find them in books. I would suggest the
following two resources.
1. Phase-Locked Loops by R. Best
2. Digital Communication - A Discrete Time Approach by M. Rice
I will just give short a
Hi Dylan - If you have access to a GR OOT module (e.g., "gr-example"), then you
can try to build it directly on your host computer ... as it sounds like you're
trying to do ... but without much success as it sounds like accessing GR
libraries for linking isn't working well.
Which version of GR
You're welcome, Chris. Try those changes & see if maybe that helps. I can
generally switch between GR37 and GR38 easily, but right now I'm doing some
GR38 CMake-related fixups & need it installed while doing so. Can't easily
switch right now ... It is very possible that setting an ID for that wi
Hi Michael,
Thanks for your input. I will change the grc script as you suggested.
This may not solve my issue explicitly, but I want to learn gnuradio
so everything helps. I have been running gnuradio 3.7 mostly because
I have seen everyone's scripts use WX widgets and I found it easier to
port
Hi Chris - A few comments, more than anything else:
* You're generating 2 sinusoids then pushing them directly into the audio sink.
You're not guaranteed that the audio sink can support 2 input channels, even if
it seem to be able to. If the audio sink is working, it will always support at
leas
Hi Michael,
Here's the original .grc file. Thanks for your help.
Chris
On Mon, Aug 26, 2019 at 1:19 PM Michael Dickens
wrote:
>
> Can you send me the original GRC flowgraph too? I know you modified the
> output Python, but it might be useful. Also: I'm trying to use GR38 (just
> because) ...
Can you send me the original GRC flowgraph too? I know you modified the output
Python, but it might be useful. Also: I'm trying to use GR38 (just because) ...
so seeing what Python it generates will be useful. Thx! - MLD
On Mon, Aug 26, 2019, at 11:13 AM, Chris Gorman wrote:
> Hi Michael,
>
> T
Hi Michael,
Thanks for looking at this for me. I'm using gnuradio-3.7.13.5 on
ubuntu 18.04.
Chris
On Mon, Aug 26, 2019 at 11:05 AM Michael Dickens
wrote:
>
> OK good to know, Chris. Can you send me the latest version of your test
> script as an attachment? I'll give it a go & see what happens
Hi Chris,
You might try 'pavucontrol' as suggested to me by Kyeong Su Shin. Since
you are operating outside the GRC environment, it might help. Also, I
would compare the Python code generated by GRC with your modified code
to see areas which address the audio.
Good luck,
---
Barry Duggan
O
Just FYI that ALSA is Linux-specific.
Chris: Did you verify that audio output is working at all on your system? If
so, then have you worked out why it's not working in your flowgraph? If not,
let us know of any changes to it since you posted last & we'll see what we can
do. - MLD
On Mon, Aug 2
Hi Barry,
Thanks for your time and expertise. I should have been more verbose
in my email. I can get sound out of my code when I use the
gnuradio-companion program, but not when I run the snippet I gave you.
The purpose of the hacked code is to try to tie a 4x4 Qt.PushButton to
the various frequ
Hi Dylan,
What I am suggesting is the following:
1) Your coworker creates an Out Of Tree module following the tutorial
https://wiki.gnuradio.org/index.php/OutOfTreeModules. Once the module
has been built and installed, it will be available on gnuradio-companion
on his computer.
2) Your cowo
Hello, In the OFDM examples in gr-digital, for the packet detection blocks (Schmidt and Cox, Freq Mod and Delay), how to better choose the parameters for different FFT lengths. the problem I have to figure out that manually. Thank you.
___
Discuss-gn
Barry,
Thank you for responding to me. This does not solve my issue unfortunately. I
know how to share code for viewing/editing using Git, but this does not install
the module in GNU Radio Companion so that we can both use the module separately
on our machines.
If anyone can explain how to in
Hi Chris,
You didn't mention your OS or your platform, but this works for a Linux
system:
Using a terminal screen, enter 'aplay -L'
Here is an excerpt from my Raspberry Pi:
"""
default:CARD=ALSA
bcm2835 ALSA, bcm2835 ALSA
Default Audio Device
hw:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2
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