[Linrad] Re: Linrad from scratch

[brack <gmail.com; bodybuilders@xxxxxxxxxxxxxxxx>]

I'm running Linrad for 15 min without crashes now, so crashes happen
ONLY if I'm too active

On Mar 29, 4:29 pm, Leif Asbrink <l...@xxxxxxxxxx> wrote:
> brack <bodybuild...@xxxxxxxxx> wrote:
> > Ok,  read and followed site instructions for initial setup of Linrad,
> > and compiled 03.03 without problems under ubuntu. I have two sound
> > devices attached to pc - one is on board chip and the other is sb16. I
> > have conventional receiver plugged into sb16's line in, and headphones
> > are plugged into on-board's line out. I setup linrad's input device
> > sb16 and output on-board, did that because if I plug headphones and
> > radio in the same device, I hear signal from radio all the time and
> > dont have a slightest idea how to disable it.  
>
> You must use a mixer program to set volume controls and various
> switches on the soundcard. There is alsamixer, alsamixergui,
> GNOME ALSA mixer, gamix and others. What sb16 stands for
> is unclear to me - I am afraid that many different cards were
> sold with that label.
>
> Having two soundcards under alsa means that you should specify
> what order the devices should be numbered. Read z_ALSA.txt
>
> Under ALSA-oss it is not easy to know which device belongs
> to which card - and the order changes on re-boot if you did
> not specify what order you want.
>
> By installing the alsa development package you get access to
> native alsa that will tell you explicitly what hardware
> each driver is for.
>
> > Linrad shows for some
> > reason the message, when I choose input/output device, that the system
> > uses OSS or Alsa-OSS but I know that I didnt do any changes to the
> > system, and oss packages are not installed, so, I suppose I use alsa.
>
> You then use alsa-oss.
>
> > Anyway, the result of all my following the manual, is the silence in
> > headphones and no signal on linrad's screen. What do i do wrong? how
> > to set this thing up? any help appreciated.
>
> The easiest thing to do first might be to be to play a recorded file.
> Download e.g. unkn422.wav to e.g. /home/user/wavlib
> (zipped here:http://www.af9y.com/radio30.htm)
> and place a file "adwav" in your linrad directory with the following
> content:
> /home/user/wavlib/unkn422.wav /home/user/wavlib/u422
> The first file name has to be the full name of the file to play.
> The second file name specifies that Linrad should remember
> the parameters you select at this separate location and not make
> changes to the parameters that you use with your hardware.
>
> You might be interested to look herehttp://www.sm5bsz.com/linuxdsp/run/ssbafc.htm
>
> To play the file press '2' on the main menu. You should
> see something on screen.
>
> You may now select a signal by clicking the mouse on
> some point in the spectrum. That should produce sound
> output provided that none of the volume controls is zero.
>
> The volume in Linrad is the red bar in the baseband graph
> (green dB scale) The little square at the left should
> be white and moving. Not red ant at the top (overload)
> and not green at the bottom (no signal)
>
> If you do not hear anything it might be a good idea to
> check whether the default .wav player in Ubuntu can
> produce output.
>
> You may try the other soundcard.
> Then use 'U' to select another device and look for
> output on both loudspeaker connectors. You should find
> something somewhere. That should help you to understand
> your system and to get started with using a mixer program.
>
>   Regards
>
>     Leif / SM5BSZ

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