O Against I: 2 Devices / 3 Ins / 4 Outs

Two USB sound cards are directly connected - the output of one is routed to the input of the other and vice versa. A simple matrix volume mixer allows any one input signal to be routed to any of the four output signals at independent signal levels.

The result is an interesting drone with a surprising amount of subtlety and complexity. The matrix mixer in question is this Max patch that I posted about earlier.