Discussion:
[Freetel-codec2] FreeDV patch for the biquad-filter patch - works - Alan VK2ZIW
Alan Beard
2016-04-15 04:23:56 UTC
Permalink
Hi all,

After battling on Linux, I found this patch - it works.

System: Fedora 21 x86_64 on ASRock low power <30W motherboard QC5000.

Another note: Fedora 21 has wxGTK2.8 and wxGTK3.0 so one has to coax
CMakeLists.txt to look for wxrc-3.0 and wx-config-3.0.

============== Raspberry Pi ============
On my Banana Pi (dual core, 1Gb ram, SATA 1Tb disk) it compiles, config
works, but on running, uses 180% CPU and freezes.
Fedora 23 armhf
Display via RDP.

Oh well!!

Alan VK2ZIW

Evil flourishes when good men do nothing.
Consider Jesus.
---------------------------------------------------------------------------
Alan Beard Unix Support Technician from 1984 to today
70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS
Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc..
+61 2 47353013 (h) Support Programming, shell scripting, "C", assembler
0414 353013 (mobile) After uni, electronics tech
David Rowe
2016-04-18 21:22:09 UTC
Permalink
Hello List,

It has been pointed out to me that the license used for
codec2-dev/src/golay23.c is not GPL. I modified this file quite a lot
(functions starting with a header with my name in it) to generate look
up tables at init time, so it's just the core Golay routines that would
need replacing or re-writing.

Does anyone have the FEC experience to write a simple Golay (23,12)
encoder/decoder, or know of GPL code to do this?

I'll also attempt to contact the author.

Thanks,

David
Post by Alan Beard
Hi all,
After battling on Linux, I found this patch - it works.
System: Fedora 21 x86_64 on ASRock low power <30W motherboard QC5000.
Another note: Fedora 21 has wxGTK2.8 and wxGTK3.0 so one has to coax
CMakeLists.txt to look for wxrc-3.0 and wx-config-3.0.
============== Raspberry Pi ============
On my Banana Pi (dual core, 1Gb ram, SATA 1Tb disk) it compiles, config
works, but on running, uses 180% CPU and freezes.
Fedora 23 armhf
Display via RDP.
Oh well!!
Alan VK2ZIW
Evil flourishes when good men do nothing.
Consider Jesus.
---------------------------------------------------------------------------
Alan Beard Unix Support Technician from 1984 to today
70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS
Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc..
+61 2 47353013 (h) Support Programming, shell scripting, "C", assembler
0414 353013 (mobile) After uni, electronics tech
------------------------------------------------------------------------------
Find and fix application performance issues faster with Applications Manager
Applications Manager provides deep performance insights into multiple tiers of
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reduces your MTTR. Get your free trial!
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glen english
2016-04-18 21:30:58 UTC
Permalink
Isn't Phil Karn's stuff GPL ?
Or Zaragoza's stuff?
Post by David Rowe
Hello List,
It has been pointed out to me that the license used for
codec2-dev/src/golay23.c is not GPL. I modified this file quite a lot
(functions starting with a header with my name in it) to generate look
up tables at init time, so it's just the core Golay routines that would
need replacing or re-writing.
Does anyone have the FEC experience to write a simple Golay (23,12)
encoder/decoder, or know of GPL code to do this?
I'll also attempt to contact the author.
Thanks,
David
Post by Alan Beard
Hi all,
After battling on Linux, I found this patch - it works.
System: Fedora 21 x86_64 on ASRock low power <30W motherboard QC5000.
Another note: Fedora 21 has wxGTK2.8 and wxGTK3.0 so one has to coax
CMakeLists.txt to look for wxrc-3.0 and wx-config-3.0.
============== Raspberry Pi ============
On my Banana Pi (dual core, 1Gb ram, SATA 1Tb disk) it compiles, config
works, but on running, uses 180% CPU and freezes.
Fedora 23 armhf
Display via RDP.
Oh well!!
Alan VK2ZIW
Evil flourishes when good men do nothing.
Consider Jesus.
---------------------------------------------------------------------------
Alan Beard Unix Support Technician from 1984 to today
70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS
Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc..
+61 2 47353013 (h) Support Programming, shell scripting, "C", assembler
0414 353013 (mobile) After uni, electronics tech
------------------------------------------------------------------------------
Find and fix application performance issues faster with Applications Manager
Applications Manager provides deep performance insights into multiple tiers of
your business applications. It resolves application problems quickly and
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
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reduces your MTTR. Get your free trial!
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glen english
2016-04-18 21:46:17 UTC
Permalink
zaragoza's note:
" COPYRIGHT NOTICE: This computer program is free for non-commercial
purposes.
* You may implement this program for any non-commercial application.
You may
* also implement this program for commercial purposes, provided that you
* obtain my written permission. Any modification of this program is
covered
* by this copyright."
Post by David Rowe
Hello List,
It has been pointed out to me that the license used for
codec2-dev/src/golay23.c is not GPL. I modified this file quite a lot
(functions starting with a header with my name in it) to generate look
up tables at init time, so it's just the core Golay routines that would
need replacing or re-writing.
Does anyone have the FEC experience to write a simple Golay (23,12)
encoder/decoder, or know of GPL code to do this?
I'll also attempt to contact the author.
Thanks,
David
Post by Alan Beard
Hi all,
After battling on Linux, I found this patch - it works.
System: Fedora 21 x86_64 on ASRock low power <30W motherboard QC5000.
Another note: Fedora 21 has wxGTK2.8 and wxGTK3.0 so one has to coax
CMakeLists.txt to look for wxrc-3.0 and wx-config-3.0.
============== Raspberry Pi ============
On my Banana Pi (dual core, 1Gb ram, SATA 1Tb disk) it compiles, config
works, but on running, uses 180% CPU and freezes.
Fedora 23 armhf
Display via RDP.
Oh well!!
Alan VK2ZIW
Evil flourishes when good men do nothing.
Consider Jesus.
---------------------------------------------------------------------------
Alan Beard Unix Support Technician from 1984 to today
70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS
Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc..
+61 2 47353013 (h) Support Programming, shell scripting, "C", assembler
0414 353013 (mobile) After uni, electronics tech
------------------------------------------------------------------------------
Find and fix application performance issues faster with Applications Manager
Applications Manager provides deep performance insights into multiple tiers of
your business applications. It resolves application problems quickly and
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
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your business applications. It resolves application problems quickly and
reduces your MTTR. Get your free trial!
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Tomas Härdin
2016-04-19 10:17:09 UTC
Permalink
In other words: not (L)GPL compatible

Perhaps the CCSDS has some public domain code for this. They're fairly
open with what they do

/Tomas
Post by glen english
" COPYRIGHT NOTICE: This computer program is free for non-commercial
purposes.
* You may implement this program for any non-commercial application.
You may
* also implement this program for commercial purposes, provided that you
* obtain my written permission. Any modification of this program is
covered
* by this copyright."
Post by David Rowe
Hello List,
It has been pointed out to me that the license used for
codec2-dev/src/golay23.c is not GPL. I modified this file quite a lot
(functions starting with a header with my name in it) to generate look
up tables at init time, so it's just the core Golay routines that would
need replacing or re-writing.
Does anyone have the FEC experience to write a simple Golay (23,12)
encoder/decoder, or know of GPL code to do this?
I'll also attempt to contact the author.
Thanks,
David
Post by Alan Beard
Hi all,
After battling on Linux, I found this patch - it works.
System: Fedora 21 x86_64 on ASRock low power <30W motherboard QC5000.
Another note: Fedora 21 has wxGTK2.8 and wxGTK3.0 so one has to coax
CMakeLists.txt to look for wxrc-3.0 and wx-config-3.0.
============== Raspberry Pi ============
On my Banana Pi (dual core, 1Gb ram, SATA 1Tb disk) it compiles, config
works, but on running, uses 180% CPU and freezes.
Fedora 23 armhf
Display via RDP.
Oh well!!
Alan VK2ZIW
Evil flourishes when good men do nothing.
Consider Jesus.
---------------------------------------------------------------------------
Alan Beard Unix Support Technician from 1984 to today
70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS
Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc..
+61 2 47353013 (h) Support Programming, shell scripting, "C", assembler
0414 353013 (mobile) After uni, electronics tech
------------------------------------------------------------------------------
Find and fix application performance issues faster with Applications Manager
Applications Manager provides deep performance insights into multiple tiers of
your business applications. It resolves application problems quickly and
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
_______________________________________________
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reduces your MTTR. Get your free trial!
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Brady O'Brien
2016-04-19 15:43:39 UTC
Permalink
This also isn't quite (L)GPL licensed, but you might be able to ask the
author of this article to let you use the code in said article:
http://aqdi.com/articles/using-the-golay-error-detection-and-correction-code-3/
.
Post by Tomas Härdin
In other words: not (L)GPL compatible
Perhaps the CCSDS has some public domain code for this. They're fairly
open with what they do
/Tomas
Post by glen english
" COPYRIGHT NOTICE: This computer program is free for non-commercial
purposes.
* You may implement this program for any non-commercial application.
You may
* also implement this program for commercial purposes, provided that
you
Post by glen english
* obtain my written permission. Any modification of this program is
covered
* by this copyright."
Post by David Rowe
Hello List,
It has been pointed out to me that the license used for
codec2-dev/src/golay23.c is not GPL. I modified this file quite a lot
(functions starting with a header with my name in it) to generate look
up tables at init time, so it's just the core Golay routines that would
need replacing or re-writing.
Does anyone have the FEC experience to write a simple Golay (23,12)
encoder/decoder, or know of GPL code to do this?
I'll also attempt to contact the author.
Thanks,
David
Post by Alan Beard
Hi all,
After battling on Linux, I found this patch - it works.
System: Fedora 21 x86_64 on ASRock low power <30W motherboard QC5000.
Another note: Fedora 21 has wxGTK2.8 and wxGTK3.0 so one has to coax
CMakeLists.txt to look for wxrc-3.0 and wx-config-3.0.
============== Raspberry Pi ============
On my Banana Pi (dual core, 1Gb ram, SATA 1Tb disk) it compiles, config
works, but on running, uses 180% CPU and freezes.
Fedora 23 armhf
Display via RDP.
Oh well!!
Alan VK2ZIW
Evil flourishes when good men do nothing.
Consider Jesus.
---------------------------------------------------------------------------
Post by glen english
Post by David Rowe
Post by Alan Beard
Alan Beard Unix Support Technician from 1984 to today
70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS
Emu Heights N.S.W. 2750 Routers, terminal servers, printers,
terminals etc..
Post by glen english
Post by David Rowe
Post by Alan Beard
+61 2 47353013 (h) Support Programming, shell scripting, "C",
assembler
Post by glen english
Post by David Rowe
Post by Alan Beard
0414 353013 (mobile) After uni, electronics tech
------------------------------------------------------------------------------
Post by glen english
Post by David Rowe
Post by Alan Beard
Find and fix application performance issues faster with Applications
Manager
Post by glen english
Post by David Rowe
Post by Alan Beard
Applications Manager provides deep performance insights into multiple
tiers of
Post by glen english
Post by David Rowe
Post by Alan Beard
your business applications. It resolves application problems quickly
and
Post by glen english
Post by David Rowe
Post by Alan Beard
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
_______________________________________________
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------------------------------------------------------------------------------
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Post by David Rowe
Find and fix application performance issues faster with Applications
Manager
Post by glen english
Post by David Rowe
Applications Manager provides deep performance insights into multiple
tiers of
Post by glen english
Post by David Rowe
your business applications. It resolves application problems quickly and
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
_______________________________________________
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------------------------------------------------------------------------------
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Manager
Post by glen english
Applications Manager provides deep performance insights into multiple
tiers of
Post by glen english
your business applications. It resolves application problems quickly and
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
_______________________________________________
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reduces your MTTR. Get your free trial!
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Tomas Härdin
2016-04-19 18:36:44 UTC
Permalink
I felt inspired and took a shot at implementing an encoder/decoder based
on available information. See attached golay.c, which steps through each
possible message and correctable bit flips. It also checks that each
possible codeword has been generated. I hereby place this implementation
in the public domain so no one else has to get irritated due to lack of
usable implementations.

/Tomas
Post by Brady O'Brien
This also isn't quite (L)GPL licensed, but you might be able to ask
http://aqdi.com/articles/using-the-golay-error-detection-and-correction-code-3/
.
In other words: not (L)GPL compatible
Perhaps the CCSDS has some public domain code for this. They're fairly
open with what they do
/Tomas
Post by glen english
" COPYRIGHT NOTICE: This computer program is free for non-commercial
purposes.
* You may implement this program for any non-commercial
application.
Post by glen english
You may
* also implement this program for commercial purposes,
provided that you
Post by glen english
* obtain my written permission. Any modification of this
program is
Post by glen english
covered
* by this copyright."
Post by David Rowe
Hello List,
It has been pointed out to me that the license used for
codec2-dev/src/golay23.c is not GPL. I modified this file
quite a lot
Post by glen english
Post by David Rowe
(functions starting with a header with my name in it) to
generate look
Post by glen english
Post by David Rowe
up tables at init time, so it's just the core Golay routines
that would
Post by glen english
Post by David Rowe
need replacing or re-writing.
Does anyone have the FEC experience to write a simple Golay (23,12)
encoder/decoder, or know of GPL code to do this?
I'll also attempt to contact the author.
Thanks,
David
Post by Alan Beard
Hi all,
After battling on Linux, I found this patch - it works.
System: Fedora 21 x86_64 on ASRock low power <30W motherboard
QC5000.
Post by glen english
Post by David Rowe
Post by Alan Beard
Another note: Fedora 21 has wxGTK2.8 and wxGTK3.0 so one has
to coax
Post by glen english
Post by David Rowe
Post by Alan Beard
CMakeLists.txt to look for wxrc-3.0 and wx-config-3.0.
============== Raspberry Pi ============
On my Banana Pi (dual core, 1Gb ram, SATA 1Tb disk) it
compiles, config
Post by glen english
Post by David Rowe
Post by Alan Beard
works, but on running, uses 180% CPU and freezes.
Fedora 23 armhf
Display via RDP.
Oh well!!
Alan VK2ZIW
Evil flourishes when good men do nothing.
Consider Jesus.
---------------------------------------------------------------------------
Post by glen english
Post by David Rowe
Post by Alan Beard
Alan Beard Unix Support Technician from 1984 to
today
Post by glen english
Post by David Rowe
Post by Alan Beard
70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS
Emu Heights N.S.W. 2750 Routers, terminal servers, printers,
terminals etc..
Post by glen english
Post by David Rowe
Post by Alan Beard
+61 2 47353013 (h) Support Programming, shell scripting,
"C", assembler
Post by glen english
Post by David Rowe
Post by Alan Beard
0414 353013 (mobile) After uni, electronics tech
------------------------------------------------------------------------------
Post by glen english
Post by David Rowe
Post by Alan Beard
Find and fix application performance issues faster with
Applications Manager
Post by glen english
Post by David Rowe
Post by Alan Beard
Applications Manager provides deep performance insights into
multiple tiers of
Post by glen english
Post by David Rowe
Post by Alan Beard
your business applications. It resolves application problems
quickly and
Post by glen english
Post by David Rowe
Post by Alan Beard
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
_______________________________________________
Freetel-codec2 mailing list
https://lists.sourceforge.net/lists/listinfo/freetel-codec2
------------------------------------------------------------------------------
Post by glen english
Post by David Rowe
Find and fix application performance issues faster with
Applications Manager
Post by glen english
Post by David Rowe
Applications Manager provides deep performance insights into
multiple tiers of
Post by glen english
Post by David Rowe
your business applications. It resolves application problems
quickly and
Post by glen english
Post by David Rowe
reduces your MTTR. Get your free trial!
https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
_______________________________________________
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------------------------------------------------------------------------------
Post by glen english
Find and fix application performance issues faster with
Applications Manager
Post by glen english
Applications Manager provides deep performance insights into
multiple tiers of
Post by glen english
your business applications. It resolves application problems
quickly and
Post by glen english
reduces your MTTR. Get your free trial!
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Richard Shaw
2016-04-20 02:55:39 UTC
Permalink
Post by Tomas Härdin
I felt inspired and took a shot at implementing an encoder/decoder based
on available information. See attached golay.c, which steps through each
possible message and correctable bit flips. It also checks that each
possible codeword has been generated. I hereby place this implementation in
the public domain so no one else has to get irritated due to lack of usable
implementations.
As "Public Domain" by nature is not an actual license, it can be
problematic. I would recommend MIT as one of the least restrictive licenses
available.

Thanks,
Richard
Tomas Härdin
2016-04-20 08:19:44 UTC
Permalink
Post by Tomas Härdin
I felt inspired and took a shot at implementing an encoder/decoder
based on available information. See attached golay.c, which steps
through each possible message and correctable bit flips. It also
checks that each possible codeword has been generated. I hereby
place this implementation in the public domain so no one else has
to get irritated due to lack of usable implementations.
As "Public Domain" by nature is not an actual license, it can be
problematic. I would recommend MIT as one of the least restrictive
licenses available.
Sure, anything is fine really. Was mostly thinking for anyone stumbling
on this via a search engine and in need of some snippets

/Tomas
David Rowe
2016-04-25 00:58:07 UTC
Permalink
Tomas has kindly supplied a LGPL drop-in replacement for goly23.c which
passes the unit tests and works when tested with freedv_rx. It's been
checked into codec2-dev. Thanks Tomas!

To those people involved in packaging codec2 and freedv: do we now need
a new codec2 release?

Thanks,

David
Post by Tomas Härdin
I felt inspired and took a shot at implementing an encoder/decoder based
on available information. See attached golay.c, which steps through each
possible message and correctable bit flips. It also checks that each
possible codeword has been generated. I hereby place this implementation
in the public domain so no one else has to get irritated due to lack of
usable implementations.
/Tomas
Post by Brady O'Brien
This also isn't quite (L)GPL licensed, but you might be able to ask
http://aqdi.com/articles/using-the-golay-error-detection-and-correction-code-3/
.
In other words: not (L)GPL compatible
Perhaps the CCSDS has some public domain code for this. They're fairly
open with what they do
/Tomas
Post by glen english
" COPYRIGHT NOTICE: This computer program is free for non-commercial
purposes.
* You may implement this program for any non-commercial
application.
Post by glen english
You may
* also implement this program for commercial purposes,
provided that you
Post by glen english
* obtain my written permission. Any modification of this
program is
Post by glen english
covered
* by this copyright."
Post by David Rowe
Hello List,
It has been pointed out to me that the license used for
codec2-dev/src/golay23.c is not GPL. I modified this file
quite a lot
Post by glen english
Post by David Rowe
(functions starting with a header with my name in it) to
generate look
Post by glen english
Post by David Rowe
up tables at init time, so it's just the core Golay routines
that would
Post by glen english
Post by David Rowe
need replacing or re-writing.
Does anyone have the FEC experience to write a simple Golay (23,12)
encoder/decoder, or know of GPL code to do this?
I'll also attempt to contact the author.
Thanks,
David
Post by Alan Beard
Hi all,
After battling on Linux, I found this patch - it works.
System: Fedora 21 x86_64 on ASRock low power <30W motherboard
QC5000.
Post by glen english
Post by David Rowe
Post by Alan Beard
Another note: Fedora 21 has wxGTK2.8 and wxGTK3.0 so one has
to coax
Post by glen english
Post by David Rowe
Post by Alan Beard
CMakeLists.txt to look for wxrc-3.0 and wx-config-3.0.
============== Raspberry Pi ============
On my Banana Pi (dual core, 1Gb ram, SATA 1Tb disk) it
compiles, config
Post by glen english
Post by David Rowe
Post by Alan Beard
works, but on running, uses 180% CPU and freezes.
Fedora 23 armhf
Display via RDP.
Oh well!!
Alan VK2ZIW
Evil flourishes when good men do nothing.
Consider Jesus.
---------------------------------------------------------------------------
Post by glen english
Post by David Rowe
Post by Alan Beard
Alan Beard Unix Support Technician from 1984 to
today
Post by glen english
Post by David Rowe
Post by Alan Beard
70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS
Emu Heights N.S.W. 2750 Routers, terminal servers, printers,
terminals etc..
Post by glen english
Post by David Rowe
Post by Alan Beard
+61 2 47353013 (h) Support Programming, shell scripting,
"C", assembler
Post by glen english
Post by David Rowe
Post by Alan Beard
0414 353013 (mobile) After uni, electronics tech
------------------------------------------------------------------------------
Post by glen english
Post by David Rowe
Post by Alan Beard
Find and fix application performance issues faster with
Applications Manager
Post by glen english
Post by David Rowe
Post by Alan Beard
Applications Manager provides deep performance insights into
multiple tiers of
Post by glen english
Post by David Rowe
Post by Alan Beard
your business applications. It resolves application problems
quickly and
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Richard Shaw
2016-04-25 02:27:22 UTC
Permalink
Post by David Rowe
Tomas has kindly supplied a LGPL drop-in replacement for goly23.c which
passes the unit tests and works when tested with freedv_rx. It's been
checked into codec2-dev. Thanks Tomas!
To those people involved in packaging codec2 and freedv: do we now need
a new codec2 release?
Probably a good idea. How much has the dev branch changed from the last
release? It might be easier to drop in the file to the release branch
unless it's safe to release from devel.

Thanks,
Richard
David Rowe
2016-04-25 02:36:23 UTC
Permalink
Hi Richard,

Yes I like the idea of dropping golay23.c into the release branch ....

Cheers,

David
Post by David Rowe
Tomas has kindly supplied a LGPL drop-in replacement for goly23.c which
passes the unit tests and works when tested with freedv_rx. It's been
checked into codec2-dev. Thanks Tomas!
To those people involved in packaging codec2 and freedv: do we now need
a new codec2 release?
Probably a good idea. How much has the dev branch changed from the last
release? It might be easier to drop in the file to the release branch
unless it's safe to release from devel.
Thanks,
Richard
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Richard Shaw
2016-04-25 14:37:46 UTC
Permalink
Post by David Rowe
Yes I like the idea of dropping golay23.c into the release branch ....
Updated golay23.c commited to 0.5 release branch, new release tagged
(0.5.1) and source uploaded to freedv.org.

Thanks,
Richard
David Rowe
2016-05-08 01:05:56 UTC
Permalink
Quite a lot of FreeDV activity in .au:

1/ Sunday mornings from 9am VK5 time: WIA Broadcast 7177kHz and callback

2/ A 20m net on 14150 and 14153 kHz every day at 3 and 4pm Eastern time
between stations from VK3, VK4, and ZL.

3/ I understand there is also a Thursdsay night net from VK2, can anyone
comment on the frequency and time?

Thanks,

David

Steve
2016-04-20 14:27:56 UTC
Permalink
I kind of agree that Public Domain kind of scares people these days.

Just my 2-cents but LGPL 2.1 like the rest of the library code is probably
the best. It has the same cash value as Public Domain, but doesn't scare
companies from putting it into their repositories and using it.

Steve

P.S. Thanks for the code, I'm going to try it out.
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