Thanks for the link on the FAQ. Very helpful. I reviewed the FAQ and did not find anything I thought would help me with the next problem. I know have my two cards connected. I will want to monitor one of the output channels so I can decode DTMF, 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 to commands allow me to connect the sink/source from one card to another. I now want to listen in while connected to detect DTMF tones or possibly other audio capture. How can I do this keeping my two cards connected as above? Thanks, Craig On 01/29/2014 10:16 PM, Craig Matsuura wrote: I apologize if this has been answered. I've been digging around looking for a good way under Linux to connect up to sound cards that are ALSA devices. Sound card A has a Mic and Speaker and Sound card B has a Mic and Speaker. I want to connect Sound card A Mic to Sound card B Speaker and Sound card B Mic to Sound card A speaker. A Mic --> B Speaker A Speaker <-- B Mic I assume I can do such configuration with PulseAudio, but I'm new to PulseAudio custom setups. I have briefly played with the pactl program. I would think this can all be accomplished with the pactl program and the proper commandline parameters. Thanks, Craig -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20140131/a33bd592/attachment.html>
