The ARRL will have a press release based on this today.
http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-07-66A1.pdf
73's
Bob
--
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
If you're going to be crazy, you have
In Ubuntu Feisty Fawn, if you do synaptic, search for lowlatency, you
will see that it is utterly trivial to install and use the lowlatency
enhanced kernel. It installs a new image, modifies the grub menu, and
both Frank and I have experienced the same improvement in low latency
performance
At Jonathan's suggestion, I did a make distclean. THAT brick bat
through the window did the trick. It now compiles and completes and
make check works.
Bob
Eric Blossom wrote:
On Mon, Apr 30, 2007 at 11:15:41AM -0400, Michael Dickens wrote:
Making all in swig
make[3]: *** No rule to
Dan Halperin wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hey all,
Sorry to bring up painful memories :). I did some calculations to work
out frequency drift of the USRPs, and I wanted to know where I'm going
wrong.
The crystals in the RFX 2400 are spec'ed at 50ppm error, which is to
Also let me add that I believe only
usrp_wfm_rcv_pll.py
has the stereo decoder in it.
Bob
Bob McGwier wrote:
Steve:
I want to make sure you have a very late wxgtk installed. Versions
earlier than very recent indeed have a really ugly memory leak.
Eventually this memory leak really
If we need to truncate the Gaussian pulse, there are better windows!
Bob
Anastasopoulos Achilleas wrote:
Hi,
I noticed that the Gaussian pulse is convolved with a rectangular window
in the GMSK modulator. Why is that so?
Thanks
Achilleas
___
Hans:
I don't think you really want the CIC transfer function but the transfer
function of the convolution of the half band filters and the CIC since
that is the total transfer function through the FPGA. Am I right?
Bob
Hans Glitsch wrote:
Hello,
What is the stop band of the FPGA CIC
Since the signal will not really have infinite bandwidth (instantaneous
transitions from one state to the next), the envelope will not be of
constant modulus. The signal will be amplitude modulated with a
component due to the data transitions. Looking at the modulus or
modulus squared will
If anyone has gnuradio running on a Power PC under Linux (FC6 in
particular), could you drop me a private email with any details you
might care to provide on getting it to run? It compiles just fine but
blows up in make check and other areas.
Thanks
Bob
That means they are now U.S. law.
http://dw.com.com/redir?destUrl=http%3A%2F%2Fenterprise.spawar.navy.mil%2Fbody.cfm%3Ftype%3Dc%26category%3D27%26subcat%3D60siteId=22oId=2100-3513-6195102ontId=3513lop=nl.ex
Amateur radio is mentioned explicitly.
Bob
--
AMSAT Director and VP Engineering.
Here is a PC site for the paranoid:
http://a257.g.akamaitech.net/7/257/2422/01jan20071800/edocket.access.gpo.gov/2007/07-2684.htm
--
AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair
If you're going to be crazy, you have to
So far I have been unable to get the python to work properly on any
Power PC running Linux. It runs on Mac OSX but not PPC. For example,
make check
fails in a segmentation error in the base routine that runs the actual
checks.
It is no trouble at all to get GnuRadio to make and install
That needs a Linux ALSA sink.
Bob
'
Johnathan Corgan wrote:
Philip Balister wrote:
What would be a good GNU Radio test on a 500 MHz PPC board, with a
USRP, but no display?
To just test that GNU Radio itself is sane, you can run the dial tone
demo in:
Yandy:
If you send me a tar ball, I will put it in a branch under my
development tree for everyone to svn download should they choose to. I
will not do this unless every piece of code contains the necessary FSF,
Gnuradio, header.
Thank you for doing this work!
Bob
yandy wrote:
ok ,i'll
All resolvable with in-band signaling and RSSI with feedback to agc
hardware and software.
I know, I know, I am a broken record.
Bob
Tom Rondeau wrote:
Matt and I have had a bit of a chance to work out some kinks in the OFDM
world. My latest merge should allow people to operate over the
I just loaded 64 bit Ubuntu on my new supercomputer (Core 2 Quad
Extreme) but I have not tried the usrp yet to see if it is found. When
you plug in the usrp, have you looked at the enumeration with some tool
like usbview (available with apt-get or synaptic)?
Bob
Chris Stankevitz wrote:
Johnathan Corgan wrote:
Bob McGwier wrote:
The png's in the docs/exploring gnu radio directory are corrupted. I
cannot read them with gimp or any other other tool. File run on them
says they are PNG corrupted files.
Okay, confirmed here.
These haven't changed in literally years.
I just
26th Annual ARRL/TAPR Digital Communications Conference
September 28-30, 2007
Hartford, CT
http://www.tapr.org/dcc
-- -- -- -- -- -- -- -- --
Announcements:
A total of 18 papers have been submitted for a total of 158 pages.
Titles and authors are listed below. Thank you to all the authors!
The adjacent channel interference will be horrendous since one channel
overlaps the next door neighbor by 50 Hz.
Bob
Eric Blossom wrote:
On Thu, Sep 06, 2007 at 11:56:30AM -0400, Jeffrey Karrels wrote:
Ok. I am having a world of problems today, the main one being
determining if it is my
Never mind. My math mind is as bad as yours today. There is 150 Hz of
separation between what I assume is the 3 dB points.
Sorry
Bob
Robert McGwier wrote:
The adjacent channel interference will be horrendous since one channel
overlaps the next door neighbor by 50 Hz.
Bob
Eric Blossom
When I wrote a fast atan table look algorithm a long time ago ( and I
have no recollection if our stuff traces its ancestry to that or not) I
picked the table size for my problem at the time. There is a large
speed up using the table lookup algorithm even on today's machines but
there is no
On the ubuntu live cd (the installation CD) use gparted. It is already
there and ready for that purpose without having to resort to your
favorite bittorrent copy of partition magic.
Bob
Eng. Firas wrote:
Hi,
I suggest you run partition magic and divide your hard disk into a new
partition
Again using portaudio the following is a screen shot of the stereo FM
receiver (tuned to nothing). I will put it on the air and do it again
but it is working.
There were no aUaU with the exception of the creation of the windows
time and after that, no drops. I am displaying the x window
John:
We are not using xlc and are not likely to use xlc. We are using the
free parts of the SDK including spu-gcc and ppu-gcc for example. For
this project in fact, we cannot distribute any code built with xlc.
However, nothing about the gpl prohibits individuals from using xlc to
to
support a window manager with any serious capability). I suggest that
we do exactly what your note suggests and stick to what the thing is
capable of delivering to use with free tools.
Bob
Robert McGwier wrote:
John:
We are not using xlc and are not likely to use xlc. We are using the
free
Brian Padalino wrote:
On 10/9/07, Robert McGwier [EMAIL PROTECTED] wrote:
...
However, nothing about the gpl prohibits individuals from using xlc to
generate binaries for their own use so long as they do not distribute
the binary.
...
This is more for curiosity than anything, but where do
Philip Covington wrote:
* High Performance Software Defined Radio Discussion List *
http://www.technologynewsdaily.com/node/8209
http://www.seti.org/
73 Phil N8VB
___
http://n4hy.smugmug.com/gallery/3634776
and a great time was had by
. ;-).
Bob
N4HY
Robert McGwier wrote:
Philip Covington wrote:
* High Performance Software Defined Radio Discussion List *
http://www.technologynewsdaily.com/node/8209
http://www.seti.org/
73 Phil N8VB
___
http://n4hy.smugmug.com/gallery/3634776
The Radio Amateur Satellite Corporation, Inc. (AMSAT), a non-profit
501c3 organization in the U.S. which designs, builds, launches
satellites for the use of radio amateurs worldwide is holding its
annual meeting in Pittsburgh, Pa. this coming weekend.
This and other questions. You are not doing something right. Just
using the spe's for fft's we will see a huge speed up in gnuradio. I
can run filter, NCO, baud clock and carrier recovery, and equalizer on
the cell on 40 Mbaud signals. Trying getting that out of a (Intel) cola
nut.
We
C S Nagaraj wrote:
Hi,
Could anybody provide me the radiation pattern for LP0296 PCB log
periodic antenna that is used with DSBRX.
Regards,
Raj
I asked the designer for the pattern (his amateur radio callsign is that
cryptic signature on the antenna).
Bob
--
AMSAT Director and VP
I made an addition to gr_math.h today in an attempt to get some stalls
for branching out of code where we have an if statement run on every
bleeding sample.
gr_branchless_clipping is the new addition to gr_math as a static inline
float. It may surprise that calls to fabs and multiple
Dear QEX Editor:
Cornell Drentea, designer of Dentron amplifiers, and one of the many who
claim to have invented DDS referenced PLL's (he has as good a case as
any) has shown a beautiful example of serious professional engineering
in his Star-10 article and he is to be congratulated on a
Firas:
We need a tracking mechanism and way to submit corrections, additions,
upgrades as a community and to track who did what to whom. You have
done a fantastic job of starting this but we need to already plan while
the Arnold Dumey microsecond has not passed for AF (After Firas) and
wouldn't
Vincenzo Pellegrini wrote:
hi everybody,
It would be incredibly useful to me if somebody could suggest a link to
some resources explaining all that has currently been achieved by using
GNURadio over Fedora over PS3, and how much advantage does the current
GNURadio release take of the cell
This is sent with my OLPC. What a great idea this project is. It
goes to show what can be acccomplished ny dedicated individuals,
something familiar to a lot of people in these two groups.
The thing does appear to have sufficient horsepower to do some DSP.
I would like to think we can make
I am putting out a call for volunteers to help with some specific
prototyping tasks that AMSAT needs to do in the early part of 2008.
http://www.amsat.org for those unfamiliar with the organization.
The skills needed are
1) TIME ;-)
2) I need FPGA programming help for a Virtex 2. It will be
John Gilmore wrote:
The thing does appear to have sufficient horsepower to do some DSP.
I would like to think we can make several things available to this
project. For example, I think a tunable HF receiver for shortwave AM
broadcast is easiy achievable for very modest cost. Further out, I
http://www.gnuradio.org/trac/wiki/PS3FC8Install
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Sorry about that. I must have dreamed I did a make!
Bob
On Sat, Apr 12, 2008 at 11:47 AM, Johnathan Corgan
[EMAIL PROTECTED] wrote:
On Sat, Apr 12, 2008 at 4:39 AM, Tobias Gresch [EMAIL PROTECTED] wrote:
I checked out the latest gnuradio version from trunk and it fails to build
due to
The book is now available for pdf download
http://phptr.com/content/images/0131240722/downloads/blanchette_book.pdf
Qt4 will be GPL/QPL open source for Windows, Mac OSX, and Linux.
http://www.trolltech.com/products/qt/opensource.html
reveals it is free now for Macs and
I want to take four streams from the four channels of my
basic RX's. I want to know that the blocks from the four
gazintas will maintain synchrony. I will be doing coherent
processing on the four inputs and this is critical.
Bob
___
Same here but I have not tried JL's fix. I missed it somehow but
that is what the archive is for!
Bob
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf
Of Rahul Dhar
Sent: Monday, February 28, 2005 9:15 PM
To: Matt Ettus
Cc: discuss-gnuradio@gnu.org
Subject:
We can do this I am sure. I thank Dave and Krys for the advance
work they have been doing when not many (any?) were listening.
If we allow the FPGA to do (carrier phase/code) (acquisition/tracking )
in a joint-detection process run on the FPGA, I believe we can do a 12
channel receiver.
In
Fails at work on my SUSE 9.2 install and succeeds at home on my SUSE 9.2
install.
Running python 2.3.4 at home and Python 2.4.1 at work. However, I just
installed
2.4.1 at work. I got the same error messages before today with 2.3
first in the path.
Having 2.4.1 first seems not to have helped
The fix to cvs and the removal of the broken file cleaned up everything
here. FYI, with SUSE 9.3,
the only thing I had to install from source with two subversions later
SWIG. I was able to find
an archive that actually worked (The Mail Archive) and got the URL to
the usrp_fpga.rbf which
is
And at $550-ish, the TVRX/USRP are underpriced. Thanks Matt! I would
suggest
more realistic pricing on future components. There is little hope of
long term viability,
time for support, upgrades, etc. without sufficient capitalization. I
know that even this
is more than many can afford.
http://www.kd7lmo.net/ground_gnuradio_baseline.html
Download build_baseline.sh and copy the instructions.
This is the best page related to this project, IMNSHO.
Bob
KUNAL RAJANI wrote:
i had downloaded wxPython from
http://prdownloads.sourceforge.net/wxpython/wxPython-src-2.6.1.0.tar.gz
One modification. If the TVRX is in RX-B port use
./tvrx_wfm_rcv_gui.py --freq 100.1 -w 1
Bob
Eric Blossom wrote:
On Thu, Jun 09, 2005 at 03:29:42PM +0530, KUNAL RAJANI wrote:
hi all,
i have just started on with gnu radio and have installed all the required
libraries. I would
Please add this line to tvrx_wfm_rcv_gui.py. I have a delta 44 and want
to specify the
plughw:0,0 on the command line. On another machine, I have a Lynx
Studios card and
I need to specify the correct device (of the 8 available) to OSS (the
only one to support
the card thanks to Lynx).
I have not seen this message once on mine.
Bob
Marcus D. Leech wrote:
Matt likely isn't back from his trip to Green Bank yet, but I've observed that
with
the DBS_RX, using dbs_debug, that it complains whenever you go to set a
frequency
that VCO failed to lock at x appears.
Since
Works perfectly on all my machines. I am using Python 2.4.0 and wxGTK
(latest from
SUSE under 9.3). I am actually using wxpython 2.6.1.0. All of the GUI
gadgets I have
used (most tvrx and dbs lately) work perfectly.
Bob
Matt Ettus wrote:
Has anyone here tried using GNU Radio with wx
I was testing and debugging the new DBS_RX trying to ascertain its
suitability for GPS
and Mode LS transponder development (AMSAT -NA, http://www.amsat.org). We
found a very small assembly error (short left on a cap on an op amp), we
made some
gain adjustments on the OP AMPS in the I/Q
environment.
Bob
Eric Blossom wrote:
On Mon, Aug 15, 2005 at 04:02:00PM +, Robert McGwier wrote:
Okay, I have finally resolved this but it was a real pain.
I had downloaded clean copies and made gcc-3.4.4 and installed it and I
still had test problems.
As a last resort, now with gcc-3.4.4
Great!! Thanks.
Bob
Eric Blossom wrote:
On Thu, Aug 18, 2005 at 09:28:12PM +, n4hy wrote:
Date: Thu, 18 Aug 2005 21:27:54 +
From: n4hy [EMAIL PROTECTED]
Subject: Re: [Discuss-gnuradio] A Plea for Packagers
To: Matt Ettus [EMAIL PROTECTED]
I had no trouble on FC3 or FC4
Bdale:
I am using an atom bomb to smash an ant:
I have a PTS-160 synthesizer. It is locked with a rubidium oscillator
OR a GPS tamed oscillator. I use the rubidium when I am moving (at
W3CCX or in the car or on 10 Ghz cumulative weekends, etc.) Moving GPS
sucks for taming an oscillator!
Same here:
Under Suse 9.3 (WHICH I HAVE HAD FOR MONTHS) 8-) , xerces will not
compile. The latest version, 2_7_0 gets further into the build than
before but will not build. Since I could not figure out a single need
for it, I removed it from KD7LMO's baseline build stuff.
Please let
3 or 4...
Thanks for feedback!
Al
Robert McGwier wrote:
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Thanks for all the comments but I still have my doubts. I am more like
to believe in clock leakage and DAC nonlinearities causing this than I
am with square wave harmonic activity. I will investigate further with
the spec-an if I have time.
The pico-board looks great. I recently acquired
gr_fir_fff test fails in
test_101_interp. It hangs after 7 dots in the ellipsis and then prints
a capital E and gives one of the unreadable traces.
Anyone else see this?
Bob
--
Laziness is the number one inspiration for ingenuity. Guilty as charged!
Ooops. Yes I see that the usrp update has been failing. Mea Culpa.
Bob
Eric Blossom wrote:
On Tue, Oct 04, 2005 at 09:58:06AM -0400, Robert W McGwier wrote:
FYI.
g++ -DHAVE_CONFIG_H -I. -I. -I.. -pthread -I/usr/local/include/gnuradio
-I/usr/local/include
Almost. I did write it, I sent it off to Matt who discovered some
problem with it and I have just been too busy to figure out the
problem. It was the Kaiser window (optimal window) that was the cause
of the issue Matt observed. I will be able to return to it after the
weekend.
The AMSAT
KD7LMO has excellent instructions on how to build to a non global
libraries, etc. This prevents disruption of things that depend on the
base install versions. I know, it finally took a reinstall to
straighten my mess out.
http://www.kd7lmo.net/ground_gnuradio_install.html
and pay special
On December 22 at Carnegie Hall, the New Jersey Composer's Guild will
present Answer to Job, An Alternative Holiday Concert.Frank
Brickle (AB2KT) is the secretary of the Composer's Guild of New Jersey.
He has composed an opera which will be performed during this concert:
The rational resampler is functional and has been checked in by Eric. I
learned a valuable lesson which I will pass on. Like everyone who does
a lot of different coding these days, the first place to go is to
Google for the time saving code. Julius O. Smith of CCRMA did a very
good study
Let me add just a quick comment on the' why'. Josh' transmitter was
nearly DSB suppressed carrier.
The REASON for the DC offset is that the DC offset becomes the AM
carrier after you heterodyne or mixer up to the operating frequency.
Without the DC offset, you get DSB.
Now that Matt and I
The GMSK code is an FSK detector and modulator, etc. The only caveat is
that it must be a narrow shift FSK because of the use of arctangent in
the detector but this should not be a problem for any reasonable shift.
It is called GMSK because of the settings inside.
I think it is more general
varying block sizes, but I see this as
no problem would be a computational win.
Thanks,
Bob
Martin Dvh wrote:
Robert McGwier wrote:
Dawei:
You have understood it. Can you suggest a less expensive way than a
single pole iir filter (integrator) to compute the running average of
the data
I did a bit of google searchinrg but cannot seem to hit on the cause of
this:
** (python:1778): WARNING **: IPP request failed with status 1030
I am running the usrp FM receive program. It doesn't seem to impact the
performance but it is an annoyance. Anyone have a quick suggestion?
Bob
This is not quite right. The DIFFERENT oscillators on the USRP boards
have different frequencies and thus constantly changing phase angle with
respect to each other and with probability 1, the frequencies of both
oscillators will change with changing temp, air flow, etc.. The only
way to
It should not be surprising that the Flex Radio DSP authors (Frank
Brickle and I) are also Gnu Radio enthusiasts and have made and are
making contributions to the cause. We believe strongly in the GPL.
Bob
Frank Rawlins wrote:
Hi,
You are probably aware - SDR-1000 is being advertised on
an error and fill in the buffers with zeros, the last
data, whatever.
Bob
Eric Blossom wrote:
On Sat, Dec 17, 2005 at 10:28:26AM -0500, Robert McGwier wrote:
gr-audio-osx should NEVER be blocked awaiting anything in gr.
No, but there are times when gr should block awaiting something
Chuck, John:
If we know already, a priori, that the data is from a smooth function,
that means (moving from left to right say), the extended line or the
extended parabola from the last two or last three points respectively is
always a very good predictor of the next point, then I would
Perfect.
Chuck Swiger wrote:
Just thought while going to sleep last night, piecemeal linear or
collecting several data
points and doing linear interpolation betwen them should work fine.
For (x1, y1) (x2, y2) (x3, y3) where x1 x2 x3 I can get slope m1
and y-intercept b1
between x1-x2,
FAQ notes bug in gcc-3.4.[1-3] that causes FFTW to crash with SSE/SSE2
The new fftw3.1 beta looks good so far. Final release promised within
next two weeks.
Bob
--
AMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats,
NJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman
Gerald Youngblood with Flex Radio has made a multimillion dollar
business using V.19. He would be dead in the water without it being
reliable. I have used V.19 on windows, linux, etc. I converted the
gr-audio-alsa code to gr-audio-portaudio superficially and checked it
in. It will soon rise
Today Eric showed me how to use gr_kludge_copy to finish the
modifications to wfm_rcv_pll and we now have stereo receive on FM.
These modification are a testimonial to the GnuRadio code and the ease
with which it can be used to glue things together. I wrote the lines
down, Eric put in
on
the output. You can see it in the display. I will get to it later
probably this weekend.
Bob
Charles Swiger wrote:
On Mon, 2006-02-06 at 22:35 -0500, Robert McGwier wrote:
Today Eric showed me how to use gr_kludge_copy to finish the
modifications to wfm_rcv_pll and we now have stereo receive
All:
I did deemphasis on Left and Right and checked it in just now. It is
much better now. Thanks for the links to the RDS stuff. I will take a
look.
THANKS it already sounds much better.
Bob
al davis wrote:
On Tuesday 14 February 2006 00:13, Robert McGwier wrote
Josh:
There is the beginnings of all of this checked in. We have a
synchronizer in the MM sequencer and the basis for carrier tracking and
decision directed equalization. The goal during a work event in
GnuRadio central (Eric's basement) was to lay the ground work. We have
some kind of
I am running gr on my new Ubunto installation on my Mini-ITX 'SDR
machine'. Not one single build of a library was required. For those
that do not know about it, Ubunto is a Debian derivative. It's package
tool is apt and synaptic. This was completely trivial outside of one
wrapped around
Almost. Translate the carrier to where you want it to be and then use a
complex bandpass filter to pick off the sideband.
make the filter edgesL H for your favorite bandwidth (H-L)
for USB, make a complex filter with edges L, H
for LSB, make a complex band pass filter with edges
On building FFTW3.1 the following works
configure --enable-sse --enable-threads --enable-shared --enable-float
--enable-3dnow
--enable-k7 and --enable-shared do not work together but 3dnow works
with shared. Go figure. This library has been tested on my P4HT, Dual
Athlon MP, 8 head
That is why I put the message out. It will be good to have a working
starting point.
Bob
Stephane Fillod wrote:
On Sun, Mar 12, 2006 at 01:29:55PM -0500, Robert McGwier wrote:
[..]
I am looking for a bug in my callback under portaudio on DttSP. This
will enable us to cross platform
Some important fixes have been made in the last two weeks and that group
is really starting to come alive since Audacity and Debian both
threatened them with removal from their projects if they did not get
their V19 version out the door. That has helped tremendously. I am
adding
Stephane Fillod wrote:
On Sun, Mar 12, 2006 at 02:36:21PM -0500, Robert McGwier wrote:
That is why I put the message out. It will be good to have a working
starting point.
Okay, there it is. Just checked in to gr-audio-portaudio repository.
It's somewhat working, but there's still
No. The problem was caused by our own error. Under some pathological
conditions you want to reset the ring buffers and start over. We talked
ourselves into believing all off this was protected and we were just
plain wrong. I made the initial error and Frank recaptured the error in
, 2006 at 02:36:21PM -0500, Robert McGwier wrote:
That is why I put the message out. It will be good to have a working
starting point.
Okay, there it is. Just checked in to gr-audio-portaudio repository.
It's somewhat working, but there's still some static in the audio
output (tested
Frank Brickle wrote:
Robert McGwier wrote:
There are subtle race conditions that might occur but they are minor
irritants compared to the stupidity of what we were doing.
In particular you'd want to make sure any values that can be read in
the callback are set atomically in the client code
wish to have local support. I could easily upload
multi_tone_allhosts.py, etc.
Bob
Berndt Josef Wulf wrote:
On Monday 13 March 2006 20:49, Robert McGwier wrote:
multi_tone.py has been committed that supports
jack with -O jack
portaudio with -O pa
oss with -O /dev/dsp
alsa otherwise
Ok. This is closer. I get a few buffers, almost 1 second and then it
goes off the deep end but that is better than before when all I could
get was segmentation fault!
I will look at the callback interface, etc. to see if I see anything.
I already know this pa works because I am using
We are very close with the portaudio but not quite there with the stuff
but what I am seeing says to me this is going to be a real winner. We
are having the usual ring buffer and other simple arithmetic problems.
Stephane made a good start doing 85% of the logical work and 100% of the
grunt
pa_mono_tone.py and pa_multi_tone.py finally work, meaning
audio_portaudio_sink is working.
A real lesson was learned here. The machinery built to handle all of
the connected processing routines from sinks and sources are completely
capable of handling incompletes. The complicated
Matt Ettus wrote:
It just seeemd strange to me that a very large number, d_freq, which is
bounds limited to between d_min_freq and d_max_freq, is inside a
function trying to limit it's output to between +PI and -PI.
if(100e3 M_PI)
return(100e3-M_TWOPI)
or 3.7168... error can get
Thanks to tons of grunt work by Eric, we have used the highly tuned
ring buffers in the audio_portaudio_sink code and it functions nicely
with a little bit of operator help.I can now get solid performance
on all Linux hosts with the example code
mono_tone_portaudio.py and
It really is a shame to see this once spectacular resource go straight
across the River Styx into the fire. Do we have any idea what the
overall problem is?
Bob
Eric Blossom wrote:
On Mon, Mar 20, 2006 at 12:28:28PM +0100, Matteo Campanella wrote:
Hello, the cvs repository for jackit
wrote:
Robert McGwier wrote:
Thanks to tons of grunt work by Eric, we have used the highly tuned
ring buffers in the audio_portaudio_sink code and it functions nicely
with a little bit of operator help.I can now get solid
performance on all Linux hosts with the example code
and always back up the last portaudio library you had
working. I have been doing this since things really started heating up
in the development and I am glad I did. The stuff I got today from cvs
is completely broken for ALSA. CAVEAT EMPTOR.
Bob
Martin Dvh wrote:
Robert McGwier wrote
Bill Tracey (kd5tfd for all you hams) wins a beer and pizza for being
the first to use the WX APT (weather satellite) software in the demo
directory and to report success to me.
(wx_apt_recv.py)
Bill is working on a feedline, preamp issue which makes this picture
just a little noisy but it
Sunflower:
the correlator may be used. You may also use the filtering routine by
making the appropriate changes to the waveform you wish to cross
correlate against the incoming signal such as reverse in time and
complex conjugate. What are your needs?
sunflower wrote:
Hi,
Did anybody
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