<html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">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. <tt>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"</tt><tt> </tt><tt>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"</tt><tt> </tt> 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: </div> <blockquote cite="mid:52E9E035.7030107@vivint.com" type="cite"> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> <p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 14px; vertical-align: baseline; background-color: rgb(255, 255, 255); clear: both; color: rgb(51, 51, 51); font-family: UbuntuRegular, Ubuntu, 'Bitstream Vera Sans', 'DejaVu Sans', Tahoma, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">I apologize if this has been answered. <p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 14px; vertical-align: baseline; background-color: rgb(255, 255, 255); clear: both; color: rgb(51, 51, 51); font-family: UbuntuRegular, Ubuntu, 'Bitstream Vera Sans', 'DejaVu Sans', Tahoma, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">I've been digging around looking for a good way under Linux to connect up to sound cards that are ALSA devices. <p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 14px; vertical-align: baseline; background-color: rgb(255, 255, 255); clear: both; color: rgb(51, 51, 51); font-family: UbuntuRegular, Ubuntu, 'Bitstream Vera Sans', 'DejaVu Sans', Tahoma, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Sound card A has a Mic and Speaker and Sound card B has a Mic and Speaker. <p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 14px; vertical-align: baseline; background-color: rgb(255, 255, 255); clear: both; color: rgb(51, 51, 51); font-family: UbuntuRegular, Ubuntu, 'Bitstream Vera Sans', 'DejaVu Sans', Tahoma, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">I want to connect Sound card A Mic to Sound card B Speaker and Sound card B Mic to Sound card A speaker. <p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 14px; vertical-align: baseline; background-color: rgb(255, 255, 255); clear: both; color: rgb(51, 51, 51); font-family: UbuntuRegular, Ubuntu, 'Bitstream Vera Sans', 'DejaVu Sans', Tahoma, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">A Mic --> B Speaker <p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 14px; vertical-align: baseline; background-color: rgb(255, 255, 255); clear: both; color: rgb(51, 51, 51); font-family: UbuntuRegular, Ubuntu, 'Bitstream Vera Sans', 'DejaVu Sans', Tahoma, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">A Speaker <-- B Mic <p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 14px; vertical-align: baseline; background-color: rgb(255, 255, 255); clear: both; color: rgb(51, 51, 51); font-family: UbuntuRegular, Ubuntu, 'Bitstream Vera Sans', 'DejaVu Sans', Tahoma, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">I assume I can do such configuration with PulseAudio, but I'm new to PulseAudio custom setups. <p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 14px; vertical-align: baseline; background-color: rgb(255, 255, 255); clear: both; color: rgb(51, 51, 51); font-family: UbuntuRegular, Ubuntu, 'Bitstream Vera Sans', 'DejaVu Sans', Tahoma, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">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. <p style="margin: 0px 0px 1em; padding: 0px; border: 0px; font-size: 14px; vertical-align: baseline; background-color: rgb(255, 255, 255); clear: both; color: rgb(51, 51, 51); font-family: UbuntuRegular, Ubuntu, 'Bitstream Vera Sans', 'DejaVu Sans', Tahoma, sans-serif; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Thanks, Craig </blockquote> </body> </html>