[Novalug] Re: Audio Streaming

[W Alan Day]

Roger W. Broseus wrote:

>
> I took a look at your slides and there are a couple of things I don't 
> understand. I'd like to see some specific examples of programs, 
> sources, source types, etc.
>
> In slide 5, you mention determining the type (?) of source and say,
>     type, cat, or less .m3u and .pls files to find the real URL of the 
> stream
> I don't understand what this means.  If one is in the process of 
> identifying a source, how does this work?
>
Using WXPR as an example, if you copy the link from their site you will get

http://eastweb.streamguys.com/wxpr64.m3u

This might not be the correct URL to use with streamripper -- sometimes 
there are extra URLs in this file that have boilerplate announcements.  
To discover the proper URL, save wxpr64.m3u to disk and use cat,   pls 
files work the same way.

cat wxpr64.m3u
#EXTM3U
http://amber.streamguys.com:4370  (this is the real URL to be used with 
streamripper.)


> Slide 7 - this line is too cryptic for me:
>      e.g. ( 3 ) - .mp3, (2) - .mp3, (1) - .mp3, - .mp3 rename the - 
> .mp3 file to (4) - .mp3
>
if the -t option is used and the stream is interrupted by more than -m 
(seconds), streamripper will restart capture but won't overwrite 
previously captured material.  It changes the unnumbered filename to the 
next sequential name.  These partial programs can be reassembled by 
using the wildcard feature of bash after renaming the final unnumbered 
clip to the next sequential number.  Of course, the lost parts will be 
missing.

cat \(*.mp3 > thistle.mp3

> What is happening on Slide 8? What are the labels identifying and and 
> what are they used for?
>
The labels could be used with audacity to break up the captured stream 
into individual songs or pieces.  You may not want to bother with this.

> Slide 10: is this a "program guide" that you use? Decode the 
> abbreviations.

I collect multiple copies of Thistle & Shamrock (thistle) and Hearts of 
Space (HoS) program from different call signs in parts of the country 
that operated on different time zones.  The times have to be converted 
to local time for Kcron.  m (mono) & s (stereo) although I have 
experienced collecting both at once from the same station

> Slide 11: what's this about? Relevance to audio capture?

This map helps me decided what time zone a call sign is in.

I guess I tried to telescope too much of my talk to be comprehensible to 
anyone who didn't hear it.

HTH
-- 

W. Alan Day <dayalan at nova.org>     703-860-0181 (H)
"Day Hikes in the Metro Area (no pun intended)"
http://DayHikes.info  http:/DayHikes.info/Days_of_Yore