Still being a newbie but starting to get the idea how this all comes together. I reviewed the FAQ and did not find anything I thought would help me with the following issue. I have two cards connected (Card A mic/spkr to Card B spkr/mic). I want to monitor one of the output channels (from A or B) so I can decode DTMF in-band, my current setup is as follows based on the FAQ for connecting sink and source. pactl load-module module-loopback source="alsa_input.pci-0000_00_1b.0.analog-stereo" sink="alsa_output.usb-0d8c_C-Media_USB_Headphone_Set-00-Set.iec958-stereo" pactl load-module module-loopback source="alsa_input.usb-0d8c_C-Media_USB_Headphone_Set-00-Set.analog-mono" sink="alsa_output.pci-0000_00_1b.0.analog-stereo" The above two commands allow me to connect the sink/source from one card to another. I now want to listen in-band and detect DTMF tones or possibly other audio capture. How can I do this keeping my two cards connected as above? Thanks, Craig
