[pulseaudio-discuss] Connecting two sound cards mic A to speaker B and mic B to speaker A
cmatsuura at vivint.com
Fri Jan 31 18:36:08 PST 2014
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?
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.
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