Can’t you just use cat or dd to read from the input source and tee to sox and the output device? Or do you need to Sox to decode the stream so that it plays? 

> On Nov 14, 2020, at 4:52 PM, Claude Warren <claude@xenei.com> wrote:
> 
> 
> I think I need a Jack device driver and I don't see one available, so I think I have to write one.  So is there any documentation about how to write a SoX device driver?
> 
> To back up a bit, I think I need a Jack device driver because I want to take the audio input and record it while also sending it to the output.  I don't want SoX to modify the  signal going to output.  So something like:
> 
> Input ----+---- output
>           |
>          SoX ---- disk
> 
> Put differently:  Tee the input with one going to output and one going to sox to record to disk.
> 
> Anybody have either documentation for how to write the device driver or a solution for the problem?
> 
> Claude
> 
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