Thanks David! This is then easier than I thought, because I don't have to do
the input and output voice resampling.
I'll take a stab at it tonight
Adrian
On October 24, 2019 7:08:24 AM UTC, David Rowe wrote:
>The speech input and output is at 8 kHz. The modem input and output
>runs at 48 kHz.
The speech input and output is at 8 kHz. The modem input and output
runs at 48 kHz. Some examples of command line operation of the mode at
the bottom of codec2/README.md
Cheers,
David
On 24/10/19 5:56 am, Adrian Musceac wrote:
> So does this mean the input sample rate is also 48 kHz? That would
I see. The design choices in 2400A are too low level for me, I mostly write
glue code between gnuradio blocks and handle the user interface. If it needs 48
kHz, then this is what I will feed into FreeDV.
Thanks,
Adrian
On October 23, 2019 8:26:27 PM UTC, Steve wrote:
>I'm not sure why 48 kHz
I'm not sure why 48 kHz was used, other than it makes for a more pure
waveform, and is compatible with sound cards. You need at least 9600
Hz, as the 4800 Hz tone would need as a minimum 2X to get it sampled.
I suspect 16 kHz would work good in firmware A/D or D/A (without a
sound card).
The main
So does this mean the input sample rate is also 48 kHz? That would make it
harder for me because all the other modes use 8 kHz...
On October 23, 2019 4:20:48 PM UTC, Steve wrote:
>On Wed, Oct 23, 2019 at 10:44 AM Adrian Musceac
>wrote:
>>
>> Regarding mode 2400A, can someone confirm that the
On Wed, Oct 23, 2019 at 10:44 AM Adrian Musceac wrote:
>
> Regarding mode 2400A, can someone confirm that the output of this mode is
> resampled to 48 kHz?
> I'm trying to add it, but some numbers don't work for me.
It's not resampled, it is generated at 48 kHz rather than 8 kHz as in
other
I'd be curious how well qradiolink generated FreeDV does against regular SSB
FreeDV. I don't have an SSB radio to check this, it's all SDR for me. The main
challenge I see is SDR frequency correction, since we can't be off frequncy by
much. Newer devices have input for GPSDO, but I don't posess
Hi Adrian,
To be more specific:
Because you are using Fedora x86_64 edit cmake/Modules/FindmbedTLS.cmake
and change "lib" to "lib64" in it's search.
mkdir build
cd ./build
cmake -DSSL=mbedtls ../
Now to learn how to use it.
Later I'll use a Pi3 or an Odroid N2 or RockPro64, all of them
Alan, the instructions say one of openssl, polarssl/mbedtls or gnutls >= 3.0
The cmake flag -DSSL selects what is used.
Adrian
On October 22, 2019 9:49:13 AM UTC, Al Beard wrote:
>Hi Adrian,
>
>Your "umurmur" requires package PolarSSL. This is superseded by Mbed
>TLS.
>
>But all the function
Hi Adrian,
Your "umurmur" requires package PolarSSL. This is superseded by Mbed TLS.
But all the function names are different.
Not easy.
Alan VK2ZIW
On Sun, 20 Oct 2019 16:57:58 +0300, Adrian Musceac wrote
> Alan,
>
> Use this version of umurmur: https://github.com/qradiolink/umurmur
> It is
To answer your SDL Library problems:
https://stackoverflow.com/questions/8102313/installing-sdl-on-fedora/8102343
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Alan,
Use this version of umurmur: https://github.com/qradiolink/umurmur
It is slightly older but verified to work with qradiolink. The Murmur
server is more complicated and has some compatibility issues that I didn't
solve yet.
If you use the headless remote interface, you will need to set
Hi Adrian,
Yes, I was thinking of split sites, a computer at each end
I'll investigate mumble and murmur as they are standard packages on the Fedora
29 here.
Alan VK2ZIW
On Sun, 20 Oct 2019 11:22:20 +, Adrian Musceac wrote
> Alan,
>
> If you only want a cross-band repeater you don't need
Alan,
If you only want a cross-band repeater you don't need umurmur. That is for
connecting repeaters or radios over the internet. Just enable TX and RX in
qradiolink, set the TX shift in kHz and then enable the repeater. You can use
two separate devices in qradiolink.
Adrian
On October 20,
Hi Adrian and David,
Noting the Mumble protocol and looking for a server, I found uMurmur on github
and tried to compile it on my Fedora 29 x86_64 here but am lost in cmake finding
the SDL library.
To make a cross band codec2 to FM repeater, can you give a quick run down
using your software?
Hi Adrain and David and group,
I've now two HackRF One's to "play" lower microwave bands with.
I'll give it a go with these.
Alan VK2ZIW
On Fri, 18 Oct 2019 06:21:26 +1030, David Rowe wrote
> > But I'll add it as well once that's figured out. By the way, can I
> > suggest for libcodec2 Git
> But I'll add it as well once that's figured out. By the way, can I
> suggest for libcodec2 Git tags for stable releases? I could not find any
> tags in Github and they would be pretty useful as landmarks.
Yes, we will do that shortly, working on a new release at the moment.
Previous releases
Hi David,
Wow Adrian it's really coming along quickly! Well done :-) Combined
> with the latest crop of duplex SDRs, I can see this work opening up
> experimentation in the VHF/UHF bands.
>
Thanks! I've been working full time on this in the last month due to a
break at work that might end
Wow Adrian it's really coming along quickly! Well done :-) Combined
with the latest crop of duplex SDRs, I can see this work opening up
experimentation in the VHF/UHF bands.
Some thoughts:
1/ Codec 2 2400A and 2400B were designed to work on VHF/UHF, and 2400A
to substantially outperform FM and
Hi Gerhard,
I use the following hardware for tests:
- Obviously the controlling computer (I haven't had a chance to test it on
Raspbian, but Debian Buster works pretty well)
- PlutoSDR as the base; LimeSDR-mini should work well but my dev board
can't use the latest software so not testing on it
Hi Adrian,
I am operating a repeater (OE3XNB) and would be interested to run a
test. What hardware do we need?
73's
Gerhard OE3GBB
Am 17.10.2019 14:00, schrieb Adrian Musceac:
> Hi,
> I made some more progress working on my application[1].
> First of all, it is now possible to run it
Hi,
I made some more progress working on my application[1].
First of all, it is now possible to run it headless (maybe even daemonized)
and control it remotely using a telnet client.
Second, I have added support for mixed mode repeater (Codec2/FM or
viceversa or any combination of modes like
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