[GTALUG] I’m obviously way behind in my reading: IBM owns Redhat

[El Fontanero]

On 2020-05-27 12:39 p.m., Russell Reiter via talk wrote:
>
> I also had a weird experience when I used a line adapter to plug a 
> guitar into the line in and play out the speakers. After I defined the 
> loopback device for pulse audio I'm not sure what it was but, when I 
> adjusted the potentiometers on the guitar for base, treble and volume, 
> I seemed to be able to tune in an audio broadcast channel and got that 
> signal out the speakers. I know it was a broadcast, I heard it 
> clearly, it was a one sided conversation, but in a language I don't know.

The guitar has big coils: the circuit has high impedances, and in the 
case of a connection to a regular audio line input, it's not optimally 
terminated.  And bingo, an impromptu radio receiver.  We used to hear a 
HAM radio operator key up transmission through our subwoofer. You could 
see his antenna rising up over the houses a block over.


>
> So my thought was to get an audio breakout to usb via the 
> Thunderspy port, but that would defeat the purpose of using the 
> Realtek codec features of the board. What I really need is a good 
> quality junction between the guitar phono I/O and the computers stereo 
> line-in.

Guitar in to a mic preamp is not as exciting but is fairly clean.  From 
there you can go to line level with impunity.


Linux, Linux, Linux. There. :-)


Cheers,
Mike


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