John

What is the problem are you are trying to solve?

Think this is the bug report you are referring to...

https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1315769

This particular ~/.asoundrc file virtualises the alsa device hw:1,0 and 
does automatic format conversion using the alsa 'plug' plug-in.  The 
client application would then use p148k as the virtual device name.

I do not understand  what problem this .asoundrc file was trying to 
solve.  However it's unlikely to be the same as *your* problem, so 
cutting and pasting probably won't help.

There is no silver bullet.  You need to read and understand all this 
alsa stuff...

http://alsa.opensrc.org/Asoundrc

http://alsa.opensrc.org/Plugin_Documentation

http://www.volkerschatz.com/noise/alsa.html

etc.

Then decide whether .asoundrc can solve your problem.

As I understand it wsjtx 1.1 receives 16 bit integer samples at 12000 
samples/sec and transmits 16 bit integer samples at 48000 samples/sec.

The problem is on receive where very few sound card drivers can supply 
this sample rate.  I do not know if this problem can be solved with a 
.asoundrc file.

Instead I use wsjtx 1.3 on the linux box connected to the main rig. 
This uses 16 bit integer samples at 48000 samples/sec on receive and 
transmit via pulseaudio.  It works well.

I am currently trying to get wsjtx 1.3 to work with pulseaudio, jack, 
and sdr-core on the other linux box connected to a softrock RXTX via a 
Delta 44 card.  This is not easy!

I wish that wsjtx simply had an alsa interface that could handle 16 or 
24 bit samples at 48000 samples/sec on receive and 16 bit samples at 
48000 samples/sec on transmit.  Pulseaudio is one too many layers of 
abstraction for this application in my humble opinion.

Hope that helps.

Nick

On 17/08/14 21:12, John N1ISA wrote:
>
> My question is.. what is pcm.p148k?
>
> One last question(s)... I know I can just copy and paste the above .asoundrc
> file to my home folder, but if I was to type it out in a Text Editor, how
> important is it to get the curly brackets in the right postions? I am fairly
> sure I can type the .asoundrc file to look exactly as shown above, but if I
> was off a space, or two, would the .asoundrc file fail to run?


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