semi-pro PCI snd crd for linux

Chris Aitken chris-n/jUll39koHNgV/OU4+dkA at public.gmane.org
Thu Sep 6 02:07:45 UTC 2007


Sorry for the top post - didn't know where to insert this. I just want 
to say I get it and thanks again for the patience and clarity.

Chris Aitken

- wrote:
> On Wed, Sep 05, 2007 at 11:49:51AM -0400, Chris Aitken wrote:
>   
>> So, you need the specs to know if the port (jack) is stereo, balanced or 
>> unbalanced (mono). But is a TRS cable always capable of stereo and 
>> balanced signal (depending on whether the port you are plugging into 
>> transmits stereo or balanced signal)? Or is there balanced TRS and 
>> stereo TRS and never the twain shall meet? In that case, again, I would 
>> need to know (specs) whether it was stereo TRS or balanced TRS?
>>     
>
> Yes a TRS cable with 3 conductors will carry either a stereo signal or a
> balanced audio signal depending on the equipment you connect it to.  So
> as long as both pieces of equipment have the same interface the cable
> will work.  It won't work connecting a balanced output to a stereo input
> since that just doesn't work.
>
>   
>> I guess until I get an answer to that I would be safe as long as any TRS 
>> I use I am assured is balanced and any port (jack) I plug it into I am 
>> assured is balanced. At least now I understand why you still need L and 
>> R ports for balanced. It's because L and R are carrying their respective 
>> parts of the stereo whole, and balanced has to do with noise reduction.
>>     
>
> Yep.
>
>   
>> P.S. I would still like to know if all TRS cables are both stereo and 
>> balanced at the same time (meaning the stereo or balanced application 
>> would have to do with the port (jack) it's plugging into).  I fear the 
>> answer to this question is 'No', which means I will have to replace some 
>> of my cables. I probably would have had to replace them anyway as the 
>> local recording guru advises I use military grade cabling (which, I 
>> assume, ain't the stuff they flog at The Source).
>>     
>
> The cable is the same.  So if you have a bunch of "stereo" 1/4" patch
> cords, you can use them as balanced audio cables if you want.  You of
> course need two cables to get stereo for balanced since each only
> carries one channel.
>
> --
> Len Sorensen
>
>
>   

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