Hi Steve,
This is from NetBSD on aarch64 and the GCC maintainer sais it "just works,
magically".
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/lto-wrapper
Target: aarch64--netbsd
Configured with: /usr/src/tools/gcc/../../external/gpl3/gcc/dist/configure
I believe that "uname -m" and "cat /proc/cpuinfo" and "file /bin/bash" will
give you a hint what you're running.
cpuinfo will list capabilities. GCC usually has runtime switches to enable
optional capabilities.
I believe "gcc -v" will give you a list of all compiler options.
Steve
Hi all,
This is not fun
Does my Pi system use the NEON extensions?
1) Am I running 64bit on the RockPro64?
"file liblpcnetfreedv.so" returns "data"
OK then, try to "fix" "file", no-go.
Copy the file liblpcnetfreedv.so to my main Linux PC, we get:
/tmp/liblpcnetfreedv.so: ELF
Hi all,
Yes, I'm replying to myself.
Playing a file ./wav/all_2020.wav with freedv2020 decodes much better but only
50%.
1/2 sec audio bits, 1/2 sec silence between.
CPU load is at 110%.
So, in short, today's Pi3 (ARMv8) devices do not have the "grunt" yet.
I have no idea about whether the
Hi all,
Now I have mode 2020 running on Debian 9.9 on a Pi,
I'm doing some Speaker to Mic tests with different Audio adapters
using the test file ./freedv-gui/wav/all_2020.wav
Playing ./freedv-gui/wav/all_2020.wav on my PC, an i3 8100 through a C-Media
USB device then speaker to the mic
Hi all,
I've fixed my issues running the FreedV 1.4 2020 app on Ubuntu and Fedora.
One MUST use the "build_linux.sh" script.
It sure looks to be working on my:
Intel(R) Pentium(R) CPU G4560 @ 3.50GHz
A system that does not have the AVX/AVX2 CPU flags.
CPU usage is quite low, just 30 - 50% of
Hi Alan,
There is no need for all the details of your hardware, it's not
relevant. It won't run on RPi like systems - too much CPU load, and
possibly other issues with sound.
It's running fine on x86 Ubuntu 17/18, Fedora 29/30, and Windows.
Cheers,
David
On 28/05/19 06:39, Al Beard wrote:
>
Hi all,
This is no fun at all
Armbian on the M2 Berry here:
cat /etc/debian_version
9.9
cat /proc/asound/cards
0 [Device ]: USB-Audio - C-Media USB Audio Device
C-Media USB Audio Device at usb-1c19000.usb-1.2, full
speed
1 [S3 ]: USB-Audio -
Hi Alan,
Tnx for instructions. I will try that today.
73's
Gerhard OE3GBB
Am 27.05.2019 04:01, schrieb Al Beard:
> HI GERHARD,
>
> VIRTUAL AUDIO CABLE ... ON LINUX.
>
> OH THE WINDOZE WORLD . VAC IS A WINDOZE TERM.
>
> IT IS THE "LOOPBACK" DEVICE, PART OF THE ALSA SYSTEM SINCE
Hi Gerhard,
Virtual Audio Cable ... on Linux.
Oh the Windoze world . VAC is a Windoze term.
It is the "loopback" device, part of the ALSA system since Day 1.
Though, never setup on "out of the box" systems.
Add a file to /etc/modprobe.d/ "snd-aloop.conf"
with contents "snd-aloop"
Hi Alan,
Great to hear that mode2020 is running on a Banana Pi!
I was able to install on Ubuntu 18.04 on a I5-8350. Hardware was just
for EUR 350,- direct from China.
Made some tests in mode 2020 with WebSDRs and on QO-100 satellite.
I am still having problems with correct tuning. Also VAC
Well,
After a bit of "hacking" removing the "impossible instructions" trying
to determine is this system (not Intel or AMD) has AVX/AVX2 in the
FreeDV GUI Ver 1.4, it actually runs and doesn't crash in 2020 mode.
At this point, I have what looks like a working FreeDV 2020 app.
No success on
Hi all,
Can somebody compile this up and test please?
You will need "rtaudio" package installed
http://www.music.mcgill.ca/~gary/rtaudio/
And of course, the Codec2 2020 library with LPCnet.
Then just a Linux PC with a stereo audio interface and speaker.
Do a Tx in 700D mode and note the
Hi all,
Not so fast...
On this Asus H110M-A system with a Pentium G4560 @ 3.50GHz
we only have USB3 ports:
3 [S3 ]: USB-Audio - Sound Blaster Play! 3
The audio from "fdvcore" is "bitsy", not the nice smooth
audio when the same USB dongle is on the Armbian system (Banana Pi M2
On Tue, May 21, 2019 at 6:38 AM Al Beard wrote:
> Hi all,
>
> On a pristine new build of Ubuntu 18.04 on a Pentium
> Intel(R) Pentium(R) CPU G4560 @ 3.50GHz
> (which has no AVX/AVX2 extensions because the bloke in the PC
> shop has no idea what does and doesn't)
> anyway, Downloading LPCnet
>
Hi all,
On a pristine new build of Ubuntu 18.04 on a Pentium
Intel(R) Pentium(R) CPU G4560 @ 3.50GHz
(which has no AVX/AVX2 extensions because the bloke in the PC
shop has no idea what does and doesn't)
anyway, Downloading LPCnet
git clone https://github.com/drowe67/LPCNet
the build requires
Hi all,
Apologies, some of my problems have been in compiling the codec2 2020
library, not specifying where LPCnet was located. Thus no 2020 mode.
Add a line in CMakeLists.txt snd specify. (line 126)
I've included here my Stereo version of "SmallDV".
Left channel in and out are Receive, Right
Hi guys,
"crashes" have moved to when [Stop] is pressed in 2020 mode:
1921 Crashes when stopping 2020 rx mode.
fifoSize_ms: 300 infifo1/outfilo1: 14400 infifo2/outfilo2: 14400
rxFifoSizeSamples: 2960
free(): double free detected in tcache 2
Aborted (core dumped)
Alan
Hi Dani and Gerhard,
Nice work with your 8PSK modem Dani! There are high rate LDPC codes in
codec2 that might be useful.
The current FreeDV 2020 waveform is described here:
https://github.com/drowe67/codec2/blob/master/octave/modem_codec_frame_design.ods
With FEC it's about 3000 bits/s, so
Hello Gerhard (and Glen),
It's possible design a modem waveform to handle this channel.
Some form or PSK to fit in 2700 Hz, but it could be single carrier as
multipath and freq selective fading is not an issue for a satellite
channel. The high symbol rate would allow fast phase tracking.
I'm
Hello Gerhard,
regardng phase noise measurements, close in...
If anyone is interested, I have a python script that takes an audio tone
in a sound file and produces close-in phase noise calculations. I wrote
this for when I produced a locking board for the IC9700 and needed to
see what
Hi, yes, I know about the main focus of mode 2020. I just want to
promote this mode also for satellite, as it really will be a high
quality audio mode and other DV modes are not allowed there because of
the bandwith limit of 2700 Hz.
More tests will follow. But the problem not is Doppler shift,
Hi Gerhard,
Well done :-) The first 2020 signals in Europe (and space)!
2020 is designed for HF channels with SNRs > 10dB with slow fading, the
sort of channel where SSB is an easy copy. So it won't go as low as
700D. On non-fading channels (like a satellite or UHF line of site) it
will go
One idea I've had is to trade the OFDM pilots in on some BPSK pilots. That
is, sending 160 ms coded preambles instead of 160 ms of OFDM. That way
there would be no CPU sucking DFT. I bet it would paint real nice on the
waterfall or spectrum displays, not being 3 kHz wide.
I bought one of those Leo Bodnar dual frequency GPSDO devices without
running the software first.
It said you can separate the two frequencies by a phase shift. I was
excited to use it with a 90 degree phase shift!
Ack, 90.0 isn't an option. I guess there must be a technical reason for
that, but
Great news there Gerhard.
Sounds like some real progress on the 2020 mode.
All the best,
Walter/K5WH
From: gerh...@oe3gbb.eu
Sent: Tuesday, May 14, 2019 7:38 AM
To: Freetel Codec2
Subject: Re: [Freetel-codec2] FreeDV 2020
Hi David,
Big success!
Freedv-gui-brad-2020
Hi David,
Big success!
Freedv-gui-brad-2020 is running on Ubunti 18.04 on my new I5-8xxx. I am
having SNR 20 in mode 2020 in closed loop and on 20m to the websdr in PA
and G above S7 I got full decoding. Just QSB below S7 is kind of a
problem. Also tuning is not as easy as in the other
Hi David,
After installing freedv-gui-brad-2020 I wanted to configure a second
sound card. But I get following message:
oe3gbb@oe3gbb:~/freedv-gui-brad-2020$ ./build_linux/src/freedv
Server listening at 0.0.0.0:45116
pos 1 1
EXCHANGE_DATA_IN:
g_nSoundCards: 2
g_soundCard1InDeviceName: HDA
There's a brief snippet from a QSO I had with Steve VK5SFA across town
here: https://www.youtube.com/watch?v=2u8yTXFsIgw
Ground wave path so not a stressful test, but the audio quality is
definitely good!
73
Mark VK5QI
On Sun, May 12, 2019 at 3:39 PM David Rowe wrote:
> Hello,
>
> There's
Hello,
There's been steady progress on FreeDV 2020 lately:
http://www.rowetel.com/?p=6747
This weekend, a few of us around Adelaide had 2020 QSOs to get a feel
for the "user factors". There are a few bugs with sync and the Windows
build left to work through. Speech quality is very good.
In
Hi,
Bug: Cannot set Audio Options. Negative size dialogue box.
in file src/dlg_audiooptions.cpp line 80 a default size
is commented out. Uncomment and it works!!
Easy
Now for the 2020 crash issue.
I suspect, after [Start] is pressed, a flush of the audio input is needed.
or at least until
Hi David,
As mentioned, Intel I3 8100 only two months old. Intel's latest for laptops and
lower power motherboards, also has on-chip i915 graphics.
Intel Corporation 8th Gen Core 4-core Desktop Processor Host Bridge/DRAM
Registers [Coffee Lake S] (rev 08)
gcc version 8.3.1 20190223 (Red Hat
Alan - does you machine have AVX? This is rqd for 2020.
cat /proc/cpuinfo | grep avx
We have a TODO item to add detection for this.
- David
On 06/05/19 06:40, Al Beard wrote:
> Hi all,
>
> On this rebuilt Fedora 29 box, i3 8100, with the LXDE desktop
> I've downloaded:
> LPCNet git:
Hi mark,
No such luck, sorry, mostly this output:
rxInAudioDeviceName: USB Audio CODEC: - (hw:4,0)
rxOutAudioDeviceName: pulse
txInAudioDeviceName: pulse
txOutAudioDeviceName: USB Audio CODEC: - (hw:4,0)
freedv_get_n_speech_samples(g_pfreedv): -1766359989
Check the comments on that issue. Increasing the FIFO size to 400 seems to
fix it.
73
Mark
On Mon., 6 May 2019, 08:06 Richard Shaw, wrote:
> Al,
>
> Same for me...
>
> https://github.com/drowe67/freedv-gui/issues/12
>
> Thanks,
> Richard
> KF5OIM
>
Al,
Same for me...
https://github.com/drowe67/freedv-gui/issues/12
Thanks,
Richard
KF5OIM
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Mark, vk5qi testing an initial version of this new mode:
http://www.rowetel.com/?p=6747
- David
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