hi beinan -

if you work with csoundqt, you can use the Controller widget.  you will 
find examples in Examples -> Useful -> IO_Test (direct code), or in 
Examples -> LiveCollection -> LiveAccordizer (with UDOs).

in general, you can you the monitor opcode to get the summed output.

best -
	joachim


On 09/09/15 15:16, Beinan Li wrote:
> Hello Csound,
>
> I know that to visualize/view the output waveform, I can output to a
> sound file, then resort to other DAWs.
>
> I wonder with -odac if there is a common practice for viewing the output
> in realtime?
>
> Thanks,
> Beinan
>
>
>
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