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#1 2020-08-15 16:49:40

crimsoncandy
Member
Registered: 2020-03-26
Posts: 12

[SOLVED] Internal Microphone is incredibly distorted in GUI apps.

Recording with arecord works fine and microphone is clear but it is distorted in GUI apps like chromium, firefox, teams or any sound recording apps even though they are using correct capture device.

Here is alsa info http://alsa-project.org/db/?f=144dbe42d … 8b873a5b65

Last edited by crimsoncandy (2020-08-18 13:16:44)

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#2 2020-08-15 19:01:44

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 24,595

Re: [SOLVED] Internal Microphone is incredibly distorted in GUI apps.

Since pulseaudio is installed and the programs in question will use pulseaudio if it's running, what's pulses state here? 

pacmd list-sources
pacmd list-source-outputs

during such a problematic recording?

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#3 2020-08-16 00:52:42

crimsoncandy
Member
Registered: 2020-03-26
Posts: 12

Re: [SOLVED] Internal Microphone is incredibly distorted in GUI apps.

V1del wrote:

Since pulseaudio is installed and the programs in question will use pulseaudio if it's running, what's pulses state here? 

pacmd list-sources
pacmd list-source-outputs

during such a problematic recording?

During recording with firefox

pacmd list-sources
2 source(s) available.
    index: 0
	name: <alsa_output.pci-0000_03_00.6.analog-stereo.monitor>
	driver: <module-alsa-card.c>
	flags: DECIBEL_VOLUME LATENCY
	state: RUNNING
	suspend cause: (none)
	priority: 1030
	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
	volume steps: 65537
	muted: no
	current latency: 0.00 ms
	max rewind: 17 KiB
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 2
	linked by: 2
	fixed latency: 100.14 ms
	monitor_of: 0
	card: 1 <alsa_card.pci-0000_03_00.6>
	module: 7
	properties:
		device.description = "Monitor of Family 17h (Models 10h-1fh) HD Audio Controller Analog Stereo"
		device.class = "monitor"
		alsa.card = "1"
		alsa.card_name = "HD-Audio Generic"
		alsa.long_card_name = "HD-Audio Generic at 0xe0680000 irq 57"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:03:00.6"
		sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:03:00.6/sound/card1"
		device.bus = "pci"
		device.vendor.id = "1022"
		device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
		device.product.id = "15e3"
		device.product.name = "Family 17h (Models 10h-1fh) HD Audio Controller"
		device.string = "1"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
  * index: 1
	name: <alsa_input.pci-0000_03_00.6.analog-stereo>
	driver: <module-alsa-card.c>
	flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY
	state: RUNNING
	suspend cause: (none)
	priority: 9039
	volume: front-left: 19571 /  30% / -31.49 dB,   front-right: 19571 /  30% / -31.49 dB
	        balance 0.00
	base volume: 6554 /  10% / -60.00 dB
	volume steps: 65537
	muted: no
	current latency: 0.54 ms
	max rewind: 0 KiB
	sample spec: s16le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	used by: 2
	linked by: 2
	fixed latency: 100.14 ms
	card: 1 <alsa_card.pci-0000_03_00.6>
	module: 7
	properties:
		alsa.resolution_bits = "16"
		device.api = "alsa"
		device.class = "sound"
		alsa.class = "generic"
		alsa.subclass = "generic-mix"
		alsa.name = "Generic Analog"
		alsa.id = "Generic Analog"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		alsa.device = "0"
		alsa.card = "1"
		alsa.card_name = "HD-Audio Generic"
		alsa.long_card_name = "HD-Audio Generic at 0xe0680000 irq 57"
		alsa.driver_name = "snd_hda_intel"
		device.bus_path = "pci-0000:03:00.6"
		sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:03:00.6/sound/card1"
		device.bus = "pci"
		device.vendor.id = "1022"
		device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
		device.product.id = "15e3"
		device.product.name = "Family 17h (Models 10h-1fh) HD Audio Controller"
		device.string = "front:1"
		device.buffering.buffer_size = "17664"
		device.buffering.fragment_size = "2944"
		device.access_mode = "mmap"
		device.profile.name = "analog-stereo"
		device.profile.description = "Analog Stereo"
		device.description = "Family 17h (Models 10h-1fh) HD Audio Controller Analog Stereo"
		alsa.mixer_name = "Realtek Generic"
		alsa.components = "HDA:10ec0230,17aa3822,00100002"
		module-udev-detect.discovered = "1"
		device.icon_name = "audio-card-pci"
	ports:
		analog-input-internal-mic: Internal Microphone (priority 8900, latency offset 0 usec, available: unknown)
			properties:
				device.icon_name = "audio-input-microphone"
		analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: no)
			properties:
				device.icon_name = "audio-input-microphone"
	active port: <analog-input-internal-mic>
pacmd list-source-outputs
4 source output(s) available.
    index: 0
	driver: <protocol-native.c>
	flags: DONT_MOVE START_CORKED
	state: RUNNING
	source: 1 <alsa_input.pci-0000_03_00.6.analog-stereo>
	volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
	        balance 0.00
	muted: no
	current latency: 0.00 ms
	requested latency: 100.14 ms
	sample spec: float32le 2ch 44100Hz
	channel map: front-left,front-right
	             Stereo
	resample method: copy
	owner module: 9
	client: 3 <Firefox>
	properties:
		media.name = "AudioCallbackDriver"
		application.name = "Firefox"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.process.id = "734"
		application.process.user = "saurabh"
		application.process.host = "archers"
		application.process.binary = "firefox"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "a35a4fba2e8e45fd994717175963b7f4"
		application.process.session_id = "1"
		application.icon_name = "firefox"
		module-stream-restore.id = "source-output-by-application-name:Firefox"
    index: 1
	driver: <protocol-native.c>
	flags: DONT_MOVE
	state: RUNNING
	source: 0 <alsa_output.pci-0000_03_00.6.analog-stereo.monitor>
	volume: mono: 65536 / 100% / 0.00 dB
	        balance 0.00
	muted: no
	current latency: 86.39 ms
	requested latency: 100.14 ms
	sample spec: float32le 1ch 25Hz
	channel map: mono
	             Mono
	resample method: peaks
	owner module: 9
	client: 4 <PulseAudio Volume Control>
	properties:
		media.name = "Peak detect"
		application.name = "PulseAudio Volume Control"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.id = "org.PulseAudio.pavucontrol"
		application.icon_name = "audio-card"
		application.version = "4.0"
		application.process.id = "1239"
		application.process.user = "saurabh"
		application.process.host = "archers"
		application.process.binary = "pavucontrol"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "a35a4fba2e8e45fd994717175963b7f4"
		application.process.session_id = "1"
		module-stream-restore.id = "source-output-by-application-id:org.PulseAudio.pavucontrol"
    index: 2
	driver: <protocol-native.c>
	flags: DONT_MOVE
	state: RUNNING
	source: 1 <alsa_input.pci-0000_03_00.6.analog-stereo>
	volume: mono: 65536 / 100% / 0.00 dB
	        balance 0.00
	muted: no
	current latency: 0.00 ms
	requested latency: 100.14 ms
	sample spec: float32le 1ch 25Hz
	channel map: mono
	             Mono
	resample method: peaks
	owner module: 9
	client: 4 <PulseAudio Volume Control>
	properties:
		media.name = "Peak detect"
		application.name = "PulseAudio Volume Control"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.id = "org.PulseAudio.pavucontrol"
		application.icon_name = "audio-card"
		application.version = "4.0"
		application.process.id = "1239"
		application.process.user = "saurabh"
		application.process.host = "archers"
		application.process.binary = "pavucontrol"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "a35a4fba2e8e45fd994717175963b7f4"
		application.process.session_id = "1"
		module-stream-restore.id = "source-output-by-application-id:org.PulseAudio.pavucontrol"
    index: 3
	driver: <protocol-native.c>
	flags: DONT_MOVE
	state: RUNNING
	source: 0 <alsa_output.pci-0000_03_00.6.analog-stereo.monitor>
	volume: mono: 65536 / 100% / 0.00 dB
	        balance 0.00
	muted: no
	current latency: 86.62 ms
	requested latency: 100.14 ms
	sample spec: float32le 1ch 25Hz
	channel map: mono
	             Mono
	resample method: peaks
	owner module: 9
	client: 4 <PulseAudio Volume Control>
	direct on input: 1
	properties:
		media.name = "Peak detect"
		application.name = "PulseAudio Volume Control"
		native-protocol.peer = "UNIX socket client"
		native-protocol.version = "33"
		application.id = "org.PulseAudio.pavucontrol"
		application.icon_name = "audio-card"
		application.version = "4.0"
		application.process.id = "1239"
		application.process.user = "saurabh"
		application.process.host = "archers"
		application.process.binary = "pavucontrol"
		application.language = "en_US.UTF-8"
		window.x11.display = ":0"
		application.process.machine_id = "a35a4fba2e8e45fd994717175963b7f4"
		application.process.session_id = "1"
		module-stream-restore.id = "source-output-by-application-id:org.PulseAudio.pavucontrol"

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#4 2020-08-16 02:08:36

crimsoncandy
Member
Registered: 2020-03-26
Posts: 12

Re: [SOLVED] Internal Microphone is incredibly distorted in GUI apps.

One thing to note here is the base volume for microphone is 10% which is very low considering the same for speakers is 100%. Also I forgot to mention that I was using mic boost, without mic boost the microphone is barely audible but distortion is a little less when recording.

"arecord" works fine with or without mic boost.

I guess that increasing the base volume might fix the issue.

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#5 2020-08-16 09:18:10

crimsoncandy
Member
Registered: 2020-03-26
Posts: 12

Re: [SOLVED] Internal Microphone is incredibly distorted in GUI apps.

@V1del Thanks for your help! The microphone problem is solved by muting one channel (left or right), but still there are some apps (e.g chromium) which reset the channels causing the same issue, can this behavior be changed? Or is it possible to remove one of the channels of microphone permanently?

EDIT: I found a workaround. I added the following to /etc/pulse/default.pa

load-module module-remap-source source_name=record_mono master=alsa_input.pci-0000_03_00.6.analog-stereo master_channel_map=front-left channel_map=mono
set-default-source record_mono

Then restart pulseaudio.

Last edited by crimsoncandy (2020-08-16 11:12:19)

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#6 2020-08-17 14:51:18

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 24,595

Re: [SOLVED] Internal Microphone is incredibly distorted in GUI apps.

Glad to hear, please mark as [SOLVED] by editing the title in your first post: https://wiki.archlinux.org/index.php/Co … ow_to_post

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