<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Holy cow I may have fixed it!<div> </div><div>Rather, figured out the problem.</div><div> </div><div>Further to that post I read about Skype rejecting the QU digital signal without boosting. I could see the peak VU in Audacity is much lower than I see on the mixer screen.</div><div> </div><div>So in OBS I applied a 24db gain to the ch1 and CH2. I also have OBS set to play to my virtual null-sink. And monitor the sink. In Zoom I select the null sink’s monitor as the mic and BOOM I have sound!</div><div> </div><div>Oh wow! I have to vacate the venue now. I will try this setup again.</div><div> </div><div>If it works twice….. <div dir="ltr"><div> </div><div> </div><div>Richard Cooke</div>(Sent from my iPhone)</div><div dir="ltr"> <blockquote type="cite">On Jul 13, 2022, at 5:07 PM, Richard Cooke <rcooke@visrico.ca> wrote: </blockquote></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8">@Sean <div style="-webkit-text-size-adjust: auto;"> </div><div style="-webkit-text-size-adjust: auto;">I popped in to the church to get this info and try again with the analog output cable.</div><div style="-webkit-text-size-adjust: auto;"> </div><div style="-webkit-text-size-adjust: auto;">Just powered up the QU and rebooted my PC. I am trying to email from an account I created for this pc. If that bombs I will resend from my account.</div><div style="-webkit-text-size-adjust: auto;"> </div><div style="-webkit-text-size-adjust: auto;">So I did:</div><div style="-webkit-text-size-adjust: auto;">camera@cameras:~$ pactl list sources </div><div style="-webkit-text-size-adjust: auto;"> </div><div style="-webkit-text-size-adjust: auto;">And got:</div><div style="-webkit-text-size-adjust: auto;"> </div><div style="-webkit-text-size-adjust: auto;">Source #0 State: SUSPENDED Name: alsa_output.usb-Allen_Heath_Ltd_QU-24-01.multichannel-output.monitor Description: Monitor of QU-24 Multichannel Driver: module-alsa-card.c Sample Specification: s32le 32ch 48000Hz Channel Map: front-left,front-right,rear-left,rear-right,front-center,lfe,side-left,side-right,aux0,aux1,aux2,aux3,aux4,aux5,aux6,aux7,aux8,aux9,aux10,aux11,aux12,aux13,aux14,aux15,aux16,aux17,aux18,aux19,aux20,aux21,aux22,aux23 Owner Module: 7 Mute: no Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB, rear-left: 65536 / 100% / 0.00 dB, rear-right: 65536 / 100% / 0.00 dB, front-center: 65536 / 100% / 0.00 dB, lfe: 65536 / 100% / 0.00 dB, side-left: 65536 / 100% / 0.00 dB, side-right: 65536 / 100% / 0.00 dB, aux0: 65536 / 100% / 0.00 dB, aux1: 65536 / 100% / 0.00 dB, aux2: 65536 / 100% / 0.00 dB, aux3: 65536 / 100% / 0.00 dB, aux4: 65536 / 100% / 0.00 dB, aux5: 65536 / 100% / 0.00 dB, aux6: 65536 / 100% / 0.00 dB, aux7: 65536 / 100% / 0.00 dB, aux8: 65536 / 100% / 0.00 dB, aux9: 65536 / 100% / 0.00 dB, aux10: 65536 / 100% / 0.00 dB, aux11: 65536 / 100% / 0.00 dB, aux12: 65536 / 100% / 0.00 dB, aux13: 65536 / 100% / 0.00 dB, aux14: 65536 / 100% / 0.00 dB, aux15: 65536 / 100% / 0.00 dB, aux16: 65536 / 100% / 0.00 dB, aux17: 65536 / 100% / 0.00 dB, aux18: 65536 / 100% / 0.00 dB, aux19: 65536 / 100% / 0.00 dB, aux20: 65536 / 100% / 0.00 dB, aux21: 65536 / 100% / 0.00 dB, aux22: 65536 / 100% / 0.00 dB, aux23: 65536 / 100% / 0.00 dB balance 0.00 Base Volume: 65536 / 100% / 0.00 dB Monitor of Sink: alsa_output.usb-Allen_Heath_Ltd_QU-24-01.multichannel-output Latency: 0 usec, configured 0 usec Flags: DECIBEL_VOLUME LATENCY Properties: device.description = "Monitor of QU-24 Multichannel" device.class = "monitor" alsa.card = "1" alsa.card_name = "QU-24" alsa.long_card_name = "Allen&Heath Ltd QU-24 at usb-0000:00:14.0-2.4, high speed" alsa.driver_name = "snd_usb_audio" device.bus_path = "pci-0000:00:14.0-usb-0:2.4:1.1" sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2.4/1-2.4:1.1/sound/card1" <a href="http://udev.id/">udev.id</a> = "usb-Allen_Heath_Ltd_QU-24-01" device.bus = "usb" <a href="http://device.vendor.id/">device.vendor.id</a> = "22f0" <a href="http://device.vendor.name/">device.vendor.name</a> = "Allen&Heath Ltd" <a href="http://device.product.id/">device.product.id</a> = "0007" <a href="http://device.product.name/">device.product.name</a> = "QU-24" device.serial = "Allen_Heath_Ltd_QU-24" device.string = "1" module-udev-detect.discovered = "1" device.icon_name = "audio-card-usb" Formats: pcm Source #1 State: SUSPENDED Name: alsa_input.usb-Allen_Heath_Ltd_QU-24-01.multichannel-input Description: QU-24 Multichannel Driver: module-alsa-card.c Sample Specification: s32le 32ch 48000Hz Channel Map: front-left,front-right,rear-left,rear-right,front-center,lfe,side-left,side-right,aux0,aux1,aux2,aux3,aux4,aux5,aux6,aux7,aux8,aux9,aux10,aux11,aux12,aux13,aux14,aux15,aux16,aux17,aux18,aux19,aux20,aux21,aux22,aux23 Owner Module: 7 Mute: no Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB, rear-left: 65536 / 100% / 0.00 dB, rear-right: 65536 / 100% / 0.00 dB, front-center: 65536 / 100% / 0.00 dB, lfe: 65536 / 100% / 0.00 dB, side-left: 65536 / 100% / 0.00 dB, side-right: 65536 / 100% / 0.00 dB, aux0: 65536 / 100% / 0.00 dB, aux1: 65536 / 100% / 0.00 dB, aux2: 65536 / 100% / 0.00 dB, aux3: 65536 / 100% / 0.00 dB, aux4: 65536 / 100% / 0.00 dB, aux5: 65536 / 100% / 0.00 dB, aux6: 65536 / 100% / 0.00 dB, aux7: 65536 / 100% / 0.00 dB, aux8: 65536 / 100% / 0.00 dB, aux9: 65536 / 100% / 0.00 dB, aux10: 65536 / 100% / 0.00 dB, aux11: 65536 / 100% / 0.00 dB, aux12: 65536 / 100% / 0.00 dB, aux13: 65536 / 100% / 0.00 dB, aux14: 65536 / 100% / 0.00 dB, aux15: 65536 / 100% / 0.00 dB, aux16: 65536 / 100% / 0.00 dB, aux17: 65536 / 100% / 0.00 dB, aux18: 65536 / 100% / 0.00 dB, aux19: 65536 / 100% / 0.00 dB, aux20: 65536 / 100% / 0.00 dB, aux21: 65536 / 100% / 0.00 dB, aux22: 65536 / 100% / 0.00 dB, aux23: 65536 / 100% / 0.00 dB balance 0.00 Base Volume: 65536 / 100% / 0.00 dB Monitor of Sink: n/a Latency: 0 usec, configured 0 usec Flags: HARDWARE DECIBEL_VOLUME LATENCY Properties: alsa.resolution_bits = "32" device.api = "alsa" device.class = "sound" alsa.class = "generic" alsa.subclass = "generic-mix" <a href="http://alsa.name/">alsa.name</a> = "USB Audio" <a href="http://alsa.id/">alsa.id</a> = "USB Audio" alsa.subdevice = "0" alsa.subdevice_name = "subdevice #0" alsa.device = "0" alsa.card = "1" alsa.card_name = "QU-24" alsa.long_card_name = "Allen&Heath Ltd QU-24 at usb-0000:00:14.0-2.4, high speed" alsa.driver_name = "snd_usb_audio" device.bus_path = "pci-0000:00:14.0-usb-0:2.4:1.1" sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2.4/1-2.4:1.1/sound/card1" <a href="http://udev.id/">udev.id</a> = "usb-Allen_Heath_Ltd_QU-24-01" device.bus = "usb" <a href="http://device.vendor.id/">device.vendor.id</a> = "22f0" <a href="http://device.vendor.name/">device.vendor.name</a> = "Allen&Heath Ltd" <a href="http://device.product.id/">device.product.id</a> = "0007" <a href="http://device.product.name/">device.product.name</a> = "QU-24" device.serial = "Allen_Heath_Ltd_QU-24" device.string = "hw:1" device.buffering.buffer_size = "1048576" device.buffering.fragment_size = "524288" device.access_mode = "mmap+timer" <a href="http://device.profile.name/">device.profile.name</a> = "multichannel-input" device.profile.description = "Multichannel" device.description = "QU-24 Multichannel" module-udev-detect.discovered = "1" device.icon_name = "audio-card-usb" Ports: multichannel-input: Multichannel Input (priority: 0) Active Port: multichannel-input Formats: pcm Source #2 State: SUSPENDED Name: alsa_output.pci-0000_00_1f.3.analog-stereo.monitor Description: Monitor of Built-in Audio Analog Stereo Driver: module-alsa-card.c Sample Specification: s32le 2ch 44100Hz Channel Map: front-left,front-right Owner Module: 8 Mute: no Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB balance 0.00 Base Volume: 65536 / 100% / 0.00 dB Monitor of Sink: alsa_output.pci-0000_00_1f.3.analog-stereo Latency: 0 usec, configured 0 usec Flags: DECIBEL_VOLUME LATENCY Properties: device.description = "Monitor of Built-in Audio Analog Stereo" device.class = "monitor" alsa.card = "0" alsa.card_name = "HDA Intel PCH" alsa.long_card_name = "HDA Intel PCH at 0xf7320000 irq 130" alsa.driver_name = "snd_hda_intel" device.bus_path = "pci-0000:00:1f.3" sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0" device.bus = "pci" <a href="http://device.vendor.id/">device.vendor.id</a> = "8086" <a href="http://device.vendor.name/">device.vendor.name</a> = "Intel Corporation" <a href="http://device.product.id/">device.product.id</a> = "a2f0" <a href="http://device.product.name/">device.product.name</a> = "200 Series PCH HD Audio" device.form_factor = "internal" device.string = "0" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" Formats: pcm Source #3 State: SUSPENDED Name: alsa_input.pci-0000_00_1f.3.analog-stereo Description: Built-in Audio Analog Stereo Driver: module-alsa-card.c Sample Specification: s32le 2ch 44100Hz Channel Map: front-left,front-right Owner Module: 8 Mute: no Volume: front-left: 17948 / 27% / -33.75 dB, front-right: 17948 / 27% / -33.75 dB balance 0.00 Base Volume: 6554 / 10% / -60.00 dB Monitor of Sink: n/a Latency: 0 usec, configured 0 usec Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY Properties: alsa.resolution_bits = "32" device.api = "alsa" device.class = "sound" alsa.class = "generic" alsa.subclass = "generic-mix" <a href="http://alsa.name/">alsa.name</a> = "ALC662 rev3 Analog" <a href="http://alsa.id/">alsa.id</a> = "ALC662 rev3 Analog" alsa.subdevice = "0" alsa.subdevice_name = "subdevice #0" alsa.device = "0" alsa.card = "0" alsa.card_name = "HDA Intel PCH" alsa.long_card_name = "HDA Intel PCH at 0xf7320000 irq 130" alsa.driver_name = "snd_hda_intel" device.bus_path = "pci-0000:00:1f.3" sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0" device.bus = "pci" <a href="http://device.vendor.id/">device.vendor.id</a> = "8086" <a href="http://device.vendor.name/">device.vendor.name</a> = "Intel Corporation" <a href="http://device.product.id/">device.product.id</a> = "a2f0" <a href="http://device.product.name/">device.product.name</a> = "200 Series PCH HD Audio" device.form_factor = "internal" device.string = "front:0" device.buffering.buffer_size = "705600" device.buffering.fragment_size = "352800" device.access_mode = "mmap+timer" <a href="http://device.profile.name/">device.profile.name</a> = "analog-stereo" device.profile.description = "Analog Stereo" device.description = "Built-in Audio Analog Stereo" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" Ports: analog-input-front-mic: Front Microphone (priority: 8500, available) analog-input-rear-mic: Rear Microphone (priority: 8200, not available) analog-input-linein: Line In (priority: 8100, not available) Active Port: analog-input-front-mic Formats: pcm Source #4 State: IDLE Name: Source.monitor Description: Monitor of Null Output Driver: module-null-sink.c Sample Specification: float32le 2ch 44100Hz Channel Map: front-left,front-right Owner Module: 26 Mute: no Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB balance 0.00 Base Volume: 65536 / 100% / 0.00 dB Monitor of Sink: Source Latency: 0 usec, configured 2000000 usec Flags: DECIBEL_VOLUME LATENCY Properties: device.description = "Monitor of Null Output" device.class = "monitor" device.icon_name = "audio-input-microphone" Formats: pcm Source #5 State: SUSPENDED Name: VirtualMic Description: Virtual Source VirtualMic on Monitor of Null Output Driver: module-virtual-source.c Sample Specification: float32le 2ch 44100Hz Channel Map: front-left,front-right Owner Module: 27 Mute: no Volume: front-left: 65536 / 100%, front-right: 65536 / 100% balance 0.00 Base Volume: 65536 / 100% Monitor of Sink: n/a Latency: 0 usec, configured 0 usec Flags: HW_MUTE_CTRL LATENCY Properties: device.master_device = "Source.monitor" device.class = "filter" <a href="http://device.vsource.name/">device.vsource.name</a> = "VirtualMic" device.description = "Virtual Source VirtualMic on Monitor of Null Output" device.icon_name = "audio-input-microphone" Formats: pcm</div> <div dir="ltr"><div> </div><div> </div><div>Richard Cooke</div>(Sent from my iPhone)</div><div dir="ltr"> <blockquote type="cite">On Jul 11, 2022, at 3:25 AM, Sean Greenslade <sean@seangreenslade.com> wrote: </blockquote></div><blockquote type="cite"><div dir="ltr">On Sun, Jul 10, 2022 at 09:41:16PM -0400, Richard Cooke wrote: <blockquote type="cite">On 2022-07-10 4:14 PM, Sean Greenslade wrote: </blockquote><blockquote type="cite"><blockquote type="cite">You should (in theory) be able to use module-remap-sink or </blockquote></blockquote><blockquote type="cite"><blockquote type="cite">module-remap-source to create a virtual 2-channel sink/source using </blockquote></blockquote><blockquote type="cite"><blockquote type="cite">specific channels from the 32 channel one. See: </blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> </blockquote></blockquote><blockquote type="cite"><blockquote type="cite">https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#module-remap-sink </blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> </blockquote></blockquote><blockquote type="cite"><blockquote type="cite">It may require some experimentation to figure out what names pulse is </blockquote></blockquote><blockquote type="cite"><blockquote type="cite">assigning to each channel, since the first 8 channels are given </blockquote></blockquote><blockquote type="cite"><blockquote type="cite">standardized 7.1-channel names. Take a look here for the string names </blockquote></blockquote><blockquote type="cite"><blockquote type="cite">that module-remap-* is looking for in channel_map: </blockquote></blockquote><blockquote type="cite"><blockquote type="cite"> </blockquote></blockquote><blockquote type="cite"><blockquote type="cite">https://github.com/pulseaudio/pulseaudio/blob/7f4d7fcf5f6407913e50604c6195d0d5356195b1/src/pulse/channelmap.c#L39 </blockquote></blockquote><blockquote type="cite"> </blockquote><blockquote type="cite">Thanks Sean! I was working on it again today, I posted the latest update to </blockquote><blockquote type="cite">another website: </blockquote><blockquote type="cite"> </blockquote><blockquote type="cite">https://linuxmusicians.com/viewtopic.php?f=27&t=24713&sid=e80ee72d0f2e1b23402e32e62ca0bf6f </blockquote><blockquote type="cite"> </blockquote><blockquote type="cite">In summary, I can see only two MIDI devices in the signal patch window. I </blockquote><blockquote type="cite">do not see the 32-channels of audio data that I know is there - because </blockquote><blockquote type="cite">Audacity can access it. </blockquote><blockquote type="cite"> </blockquote><blockquote type="cite">So I assume I am missing something in my config to expose those channels. </blockquote><blockquote type="cite"> </blockquote><blockquote type="cite">I'll read through your links too, in case the missing piece is in there. </blockquote><blockquote type="cite"> </blockquote><blockquote type="cite">Part of my frustration is I can only see the QU when its powered up. The </blockquote><blockquote type="cite">streaming PC is on all the time, but we cannot leave the QU powered up </blockquote><blockquote type="cite">because of the main power amps. Bad things could easily happen if I play </blockquote><blockquote type="cite">around with signals while the whole system is live! Or while left </blockquote><blockquote type="cite">unattended. </blockquote> I re-added the mailing list, although this is perhapes straying away from a pulse-specific discussion. You mention "Catlia" in your forum post, which I assume is a typo. There are two similar programs in the KXStudio lineup, "Catia" and "Carla". I'm assuming you're using catia, which is a patchbay for the JACK audio server. JACK is similar to Pulseaudio in that it is a sound routing engine and not a direct soundcard driver. In Linux, the soundcard driver is ALSA. Both JACK and Pulse make use of ALSA to interact with the hardware sound devices. Generally speaking you would only use one sound server. Although there are ways to run both simultaneously and to route audio between the two, that's definitely an advanced setup. Note that Catia cannot control Pulseaudio at all, and while Carla technically has the ability to use Pulse as its backend, it doesn't expose the Pulse sources / sinks in a useful way to provide the type of routing you're looking to do. From your screenshot, it appears that JACK has not taken control of the ALSA device for your 32-channel mixer, or it's not configured correctly to detect and expose the full channel count. You should probably find a JACK mailing list if you want to go down that route, although I believe Pulse is fully capable of accomplishing the task you laid out in your original email. One side note: MIDI is not the same as audio. If you're only concerned about routing audio signals around, you can completely ignore MIDI. To give some more concrete suggestions, can you do a fresh reboot of the streaming PC, turn on and connect the mixer, then run the following command and post its output: $ pactl list sources --Sean </div></blockquote></div></blockquote></div></body></html>