I see the below for list-sources. Source index 1 is muted. Source index 2 presents - TWO - microphones I want to MUTE the S/PDIF one ???? how do I do that ?
The GUI on Ubuntu 20.04 for the Input shows two items Digital S/PDIF Webcam and Webcam. Muting from GUI - works - but how do I do it from the command line ? Thanks Jerry ---- pacmd list-sources 2 source(s) available. index: 1 name: <alsa_output.pci-0000_00_1b.0.hdmi-stereo.monitor> driver: <module-alsa-card.c> flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY state: SUSPENDED suspend cause: IDLE priority: 1030 volume: front-left: 0 / 0% / -inf dB, front-right: 0 / 0% / -inf dB balance 0.00 base volume: 65536 / 100% / 0.00 dB volume steps: 65537 muted: yes current latency: 0.00 ms max rewind: 0 KiB sample spec: s16le 2ch 44100Hz channel map: front-left,front-right Stereo used by: 0 linked by: 0 configured latency: 0.00 ms; range is 16.00 .. 2000.00 ms monitor_of: 0 card: 1 <alsa_card.pci-0000_00_1b.0> module: 8 properties: device.description = "Monitor of Built-in Audio Digital Stereo (HDMI)" device.class = "monitor" alsa.card = "0" alsa.card_name = "HDA Intel PCH" alsa.long_card_name = "HDA Intel PCH at 0x89414000 irq 126" alsa.driver_name = "snd_hda_intel" device.bus_path = "pci-0000:00:1b.0" sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0" device.bus = "pci" device.vendor.id = "8086" device.vendor.name = "Intel Corporation" device.product.id = "2284" device.product.name = "Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High Definition Audio Controller" device.form_factor = "internal" device.string = "0" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" * index: 2 name: <alsa_input.usb-046d_Logitech_Webcam_C930e_8E44BAAE-02.iec958-stereo> driver: <module-alsa-card.c> flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY state: RUNNING suspend cause: (none) priority: 9048 volume: front-left: 29450 / 45% / -20.84 dB, front-right: 29450 / 45% / -20.84 dB balance 0.00 base volume: 65536 / 100% / 0.00 dB volume steps: 65537 muted: no current latency: 0.62 ms max rewind: 0 KiB sample spec: s16le 2ch 48000Hz channel map: front-left,front-right Stereo used by: 1 linked by: 1 configured latency: 40.00 ms; range is 0.50 .. 2000.00 ms card: 0 <alsa_card.usb-046d_Logitech_Webcam_C930e_8E44BAAE-02> module: 7 properties: alsa.resolution_bits = "16" device.api = "alsa" device.class = "sound" alsa.class = "generic" alsa.subclass = "generic-mix" alsa.name = "USB Audio" alsa.id = "USB Audio" alsa.subdevice = "0" alsa.subdevice_name = "subdevice #0" alsa.device = "0" alsa.card = "1" alsa.card_name = "Logitech Webcam C930e" alsa.long_card_name = "Logitech Webcam C930e at usb-0000:00:14.0-2, high speed" alsa.driver_name = "snd_usb_audio" device.bus_path = "pci-0000:00:14.0-usb-0:2:1.2" sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/sound/card1" udev.id = "usb-046d_Logitech_Webcam_C930e_8E44BAAE-02" device.bus = "usb" device.vendor.id = "046d" device.vendor.name = "Logitech, Inc." device.product.id = "0843" device.product.name = "Webcam C930e" device.serial = "046d_Logitech_Webcam_C930e_8E44BAAE" device.form_factor = "webcam" device.string = "iec958:1" device.buffering.buffer_size = "384000" device.buffering.fragment_size = "192000" device.access_mode = "mmap+timer" device.profile.name = "iec958-stereo" device.profile.description = "Digital Stereo (IEC958)" device.description = "Webcam C930e Digital Stereo (IEC958)" module-udev-detect.discovered = "1" device.icon_name = "camera-web-usb" ports: iec958-stereo-input: Digital Input (S/PDIF) (priority 0, latency offset 0 usec, available: unknown) properties: active port: <iec958-stereo-input>