[LAU] Inverse Phase in ALSA POSSIBLE ?

[Ralf Mardorf]

On Thu, 10 Mar 2016 13:13:14 +0100, Gerhard Zintel wrote:
>On Thursday 10 March 2016, Clemens Ladisch wrote:
>> Can you look at the output with an oscilloscope?  
>Or record with the input of another sound card / computer and look at 
>it in e.g. Audacity?

Or simply play a sinus tone and mix the tone and the out of phase tone
to mono by a mixer or move two speakers face to face, one playing the
tone, the other the out of phase tone.