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ik7ezn@libero.it | 1 Oct 09:01
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Linrad / Ubuntu

Hi All.
I have found  that when I connect other devices to the computer (for example USB external disks )
automatically Ubuntu do mount it (this is OK).
I to the following re-boot have inverted the order to the devices list.
Particularly in Linrad if I had dev/dsp for Delta44 and dev/dsp1 for SBlive;  I now am the contrary dev/dsp
for SBlive and dev/dsp1 at Delta44.
Does a way exist of make static the device list ?
Thanks

Ermanno / ik7ezn

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Roger Rehr | 1 Oct 17:19
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Re: Linrad / Ubuntu

Hi, Ermanno,

This is an ANNOYING AND PERVASIVE Alsa problem.  It caused me 
considerable irritation also, and caused me to switch to OSS on at 
least one system.

Alsa will tend to reorder devices each time you reboot.  There are two 
solutions of which I am aware, and I have used each of them on a system 
or two ;)  :

1.  Switch to OSS.  It is more intelligent in this regard, but has 
other issues [reinstalls get messy when you update kernel, free version 
needs to be reinstalled every 6 months or so,..]  ;)

2.  Specify to alsa what your devices are and where they should go.  I 
have done this before but not for 'a while'.  It works and is not TOO 
complicated to do.  Here is an example of how to do this:

http://alsa.opensrc.org/MultipleCards <---- look here !!

The general alsa documentation page is:
http://alsa.opensrc.org/

Hope that helps!

--

-- 
73,

W3SZ
Roger Rehr
(Continue reading)

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Rein A. Smit | 1 Oct 06:49
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New contribution to Linrrad data bank

Hello All,

Michel, ON7EH supplied his Linrad installation data.

    htttp://www.nitehawk.com/linrad_dat/

Thanks very much Michel.

ON7EH is using Mandriva with ALSA and the Delta44 soundcard.
and I believe working on using Ubuntu 6.06 as platform

73 Rein W6/PA0ZN

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Leif Asbrink | 1 Oct 19:02

Re: SSB

Hi Joe and all,

Thanks for making this paper available:

> Pitch-based methods for speech detection and automatic 
> frequency recovery
> 
>      Douglas J. Nelson and Joseph Pencak
>      Dept. of Defense (USA)
.
.
> A by-product of the pitch-based detection process is a 
> method for automatic recovery of frequency offset of 
> mistuned analog speech. Mistuning is a condition 
> which can arise in the demodulation of single-side-band 
> amplitude-modulated (SSB-AM) speech if the precise 
> carrier is not used in the demodulation process.
.
.

Unfortunately my efforts to use this method have failed.
Step 1. A complex auto-correlation on the spectrum gives
a peak at zero with phase=0 (of course) it also gives peaks
symmetrically distributed around zero and these peaks
correspond to the fundamental of the voice frequency.
So far fine - but when this comb-like function is cross-
correlated with the original spectrum to provide a curves
like fig 15 in the paper, the narrow first peak does not
correspond to the carrier frequency. Surely it shifts when
the signal is moved within the passband. A strong signal and
(Continue reading)

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Leif Asbrink | 1 Oct 21:05

64 bit

Hi Roger and all,

Comcast blocks my mail (thinking I am a spammer)

Perhaps others on the list have an interest in the below
so I happily send it via the list:-)

> I got around to installing a truly 64 bit form of Ubuntu this weekend.
> It turns out that the change to 64 bits [with a change in compiler, I
> presume] has caused some problems.
> 
> Here are the first errors I encounter:
> 
> calibrate.c: In function ?final_filtercorr_init?:
> calibrate.c:401: warning: format ?%d? expects type ?int?, but argument
> 3 has type ?long unsigned int?
> calibrate.c:401: warning: format ?%d? expects type ?int?, but argument
> 4 has type ?long unsigned int?

Hmmm, some day I will also have a 64 bit system.....

I would like to have a 64 bit system with 4 cores so
I can run four threads in true parallel with 64 bit.
I want multi-core for some purposes and 64 bit for
different purposes, but I do not want too many
computers;-)

Is there anyone who knows if a system with two processors
INTEL XEON 5110 DUAL CORE 1.6GHZ 1066MHZ S-771 1U (about USD 260)
can be mounted on a motherboardINTEL SE7320EP2DG DDR2 XEON (about
(Continue reading)

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Roger Rehr | 2 Oct 04:24
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Re: 64 bit

Hi, Leif,

Here is what I get with your program:

char 1
short int 2
int 4
long int 8
long unsigned int 8

I also read that pointers are length 8 [64 bits] with 64 bit programming.

Here is a page of interest that gives the datatype/size details for 
porting from 32 to 64 bits:

http://www.intel.com/cd/ids/developer/asmo-na/eng/167739.htm?prn=Y

Regarding your 2 core 2 duos on a mobo question, my son says he doesn't 
'know' the answer, but suspects it is "no" because AMD has announced an 
upcoming release of a board that will do the equivalent for their dual 
core chips, and it is considered to be 'big news' and 'unprecedented'.  
Take that for what its worth.

Hope all of the above helps.

PS If you haven't done so, try sending me things using your 
...@mail.sm5... address. That works from here whereas your main one 
doesn't because comcast blocks it at this end.  I don't even bother 
with your 'usual' email address anymore because comcast always blocks 
it.  Just as they are now blocking half the world, it seems ;)
(Continue reading)

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KD7HGL (Josh Logan | 3 Oct 19:38
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Re: 64 bit


Leif Asbrink wrote:

> 
> Hmmm, some day I will also have a 64 bit system.....
> 
> I would like to have a 64 bit system with 4 cores so
> I can run four threads in true parallel with 64 bit.
> I want multi-core for some purposes and 64 bit for
> different purposes, but I do not want too many
> computers;-)
> 
> Is there anyone who knows if a system with two processors
> INTEL XEON 5110 DUAL CORE 1.6GHZ 1066MHZ S-771 1U (about USD 260)
> can be mounted on a motherboardINTEL SE7320EP2DG DDR2 XEON (about 
> USD 310) to provide a system with four processors?

The XEON 5110 chips can be used in pairs.

Here is a site with some workstation machine and they list dual CPUs 
with 2 cores for both AMD and Intel.

http://www.jncs.com/static-temp/jncs-workstations.php

> Would recent Linux distributions (Debian 2.6.17 for example)
> run properly to distribute threads evenly on all four cores?
> 

Yes.  Reading the kernel list I have seen reports of 2 dual core CPUs 
working correctly.  I have also used a 4 way Sun Opteron server and
(Continue reading)

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Joe Taylor | 6 Oct 22:34
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The EME Window

I give up.  How do I make Linrad's "EME Window" appear once again at 
full size? Somehow I reduced it to a small boxed "X", and I can't seem 
to restore it no normal.  I'm running xlinrad 02.17.

     -- Joe, K1JT

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Leif Asbrink | 7 Oct 13:13

Re: The EME Window

Hello Joe,

> I give up.  How do I make Linrad's "EME Window" appear once again at 
> full size? Somehow I reduced it to a small boxed "X", and I can't seem 
> to restore it no normal.  I'm running xlinrad 02.17.

To toggle between the small box and the full size EME window,
click on the X.

The EME database must be loaded in memory. In case it is
not, the EME window will just remain as the small box.

To load the EME database, just press M on the main menu.
Then press any key except M to load the database at it
has been initiated before by Linrad. You must have the
"raw data files" for the EME database in ...emedir/
The "raw data files" accepted by Linrad are: allcalls.dta,
eme.dta, dir.skd and CALL3.TXT.

Every time you have updated the "raw data files" for the 
EME data base you have to update. Do this by pressing M 
in the M menu. (There is also F1 for help.) You will get the
opportunity to change locator and offset from UTC and you
can also set "Auto init" to 1. The "Auto init" will cause
the database to be loaded automatically each time Linrad is
started.

A database update will create a file location_errors.txt in
case you have more than one "raw data file" and in case the 
locations differ significantly.
(Continue reading)

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Leif Asbrink | 7 Oct 13:59

Linrad-02.19

Hi All,

There is a bug in the X11 version of Linrad-02.18 that
causes the screen to freeze if the F1 key is pressed.

Linrad-02.18 (and several earlier versions) make an
exit with error 1015 "Routine to open audio output 
is called but audio_flag says output is already open."
both under X11 and in terminal mode under Linux when
one re-enters normal operation after e.g. a parameter
change.

Both errors are corrected in 02-19. The Windows version
is not affected at all so there is no reason to change from
02-18 to 02-19 if you run under Windows.

If you do not run under X11 or if you do not need the F1
help on the main menu there is no reason to upgrade from
02-18 to 02-19 under Linux unless you have frequent exits
with error 1015.

73

Leif / SM5BSZ

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Gmane