option snd-seq-dummy ports=4
- The modle option "duplex=1" enables duplex operation to the port.
+ The model option "duplex=1" enables duplex operation to the port.
In duplex mode, a pair of ports are created instead of single port,
and events are tunneled between pair-ports. For example, input to
port A is sent to output port of another port B and vice versa.