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#1 2020-06-11 02:30:36
- TheNullPlayer
- Member
- From: Canada
- Registered: 2020-06-05
- Posts: 4
- Website
Webcam [VF0470] audio distorted under pulseaudio
Tried the loopback module but the audio seems slowed down.
Using pulse-audio with a "Creative Technology, Ltd Live! Cam Notebook [VF0470]" as my mic.
It seems to be a sampling rate thing but changing the default and avoiding resampling doesn't work.
Any help would be appreciated.
On Windows the webcam only supports 16000hz audio.
On Linux the webcam registers as 8000hz audio.
lsusb:
Bus 004 Device 002: ID 8087:8002 Intel Corp.
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:800a Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 045b:0210 Hitachi, Ltd
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 008: ID 19ff:0239 Dynex DCP-XXXXXXX
Bus 002 Device 007: ID 1b1c:1b3c Corsair VF0470 Live! Cam Notebook
Bus 002 Device 006: ID 045b:0209 Hitachi, Ltd
Bus 002 Device 005: ID 1b1c:1c07 Corsair
Bus 002 Device 004: ID 04d9:a0cd Holtek Semiconductor, Inc. USB Keyboard
Bus 002 Device 003: ID 04f9:0328 Brother Industries, Ltd DCP-XXXXXXX
Bus 002 Device 002: ID 041e:4068 Creative Technology, Ltd Live! Cam Notebook [VF0470]
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubcat /etc/pulse/daemon.conf:
# This file is part of PulseAudio.
#
# PulseAudio is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PulseAudio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
## Configuration file for the PulseAudio daemon. See pulse-daemon.conf(5) for
## more information. Default values are commented out. Use either ; or # for
## commenting.
; daemonize = no
; fail = yes
; allow-module-loading = yes
; allow-exit = yes
; use-pid-file = yes
; system-instance = no
; local-server-type = user
; enable-shm = yes
; enable-memfd = yes
; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB
; lock-memory = no
; cpu-limit = no
; high-priority = yes
; nice-level = -11
; realtime-scheduling = yes
; realtime-priority = 5
; exit-idle-time = 20
; scache-idle-time = 20
; dl-search-path = (depends on architecture)
; load-default-script-file = yes
; default-script-file = /etc/pulse/default.pa
; log-target = auto
; log-level = notice
; log-meta = no
; log-time = no
; log-backtrace = 0
; resample-method = speex-float-1
avoid-resampling = false
; enable-remixing = yes
; remixing-use-all-sink-channels = yes
; enable-lfe-remixing = no
; lfe-crossover-freq = 0
flat-volumes = no # yes
; rlimit-fsize = -1
; rlimit-data = -1
; rlimit-stack = -1
; rlimit-core = -1
; rlimit-as = -1
; rlimit-rss = -1
; rlimit-nproc = -1
; rlimit-nofile = 256
; rlimit-memlock = -1
; rlimit-locks = -1
; rlimit-sigpending = -1
; rlimit-msgqueue = -1
; rlimit-nice = 31
; rlimit-rtprio = 9
; rlimit-rttime = 200000
; default-sample-format = s16le
default-sample-rate = 44100
alternate-sample-rate = 8000
; default-sample-channels = 2
; default-channel-map = front-left,front-right
; default-fragments = 4
; default-fragment-size-msec = 25
; enable-deferred-volume = yes
; deferred-volume-safety-margin-usec = 8000
; deferred-volume-extra-delay-usec = 0pactl list: [Partial]
Sink #1
State: RUNNING
Name: bluez_sink.0C_A6_94_1C_C6_26.a2dp_sink
Description: SONY:HT-CT60BT
Driver: module-bluez5-device.c
Sample Specification: s16le 2ch 44100Hz
Channel Map: front-left,front-right
Owner Module: 28
Mute: no
Volume: front-left: 32924 / 50% / -17.94 dB, front-right: 32924 / 50% / -17.94 dB
balance 0.00
Base Volume: 65536 / 100% / 0.00 dB
Monitor Source: bluez_sink.0C_A6_94_1C_C6_26.a2dp_sink.monitor
Latency: 58459 usec, configured 45317 usec
Flags: HARDWARE DECIBEL_VOLUME LATENCY
Properties:
bluetooth.protocol = "a2dp_sink"
device.description = "SONY:HT-CT60BT"
device.string = "0C:A6:94:1C:C6:26"
device.api = "bluez"
device.class = "sound"
device.bus = "bluetooth"
device.form_factor = "speaker"
bluez.path = "/org/bluez/hci0/dev_0C_A6_94_1C_C6_26"
bluez.class = "0x240414"
bluez.alias = "SONY:HT-CT60BT"
device.icon_name = "audio-speakers-bluetooth"
Ports:
speaker-output: Speaker (priority: 0, available)
Active Port: speaker-output
Formats:
pcm
Source #6
State: RUNNING
Name: alsa_input.usb-Creative_Labs_VF0470_Live__Cam_Notebook-01.mono-fallback
Description: Live! Cam Notebook [VF0470] Mono
Driver: module-alsa-card.c
Sample Specification: s16le 1ch 8000Hz
Channel Map: mono
Owner Module: 7
Mute: no
Volume: mono: 65536 / 100% / 0.00 dB
balance 0.00
Base Volume: 65536 / 100% / 0.00 dB
Monitor of Sink: n/a
Latency: 0 usec, configured 66666 usec
Flags: HARDWARE DECIBEL_VOLUME LATENCY
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 = "2"
alsa.card_name = "VF0470 Live! Cam Notebook"
alsa.long_card_name = "Creative Labs VF0470 Live! Cam Notebook at usb-0000:00:14.0-2, full speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:00:14.0-usb-0:2:1.1"
sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2:1.1/sound/card2"
udev.id = "usb-Creative_Labs_VF0470_Live__Cam_Notebook-01"
device.bus = "usb"
device.vendor.id = "041e"
device.vendor.name = "Creative Technology, Ltd"
device.product.id = "4068"
device.product.name = "Live! Cam Notebook [VF0470]"
device.serial = "Creative_Labs_VF0470_Live__Cam_Notebook"
device.string = "hw:2"
device.buffering.buffer_size = "32000"
device.buffering.fragment_size = "16000"
device.access_mode = "mmap+timer"
device.profile.name = "mono-fallback"
device.profile.description = "Mono"
device.description = "Live! Cam Notebook [VF0470] Mono"
alsa.mixer_name = "USB Mixer"
alsa.components = "USB041e:4068"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-usb"
Ports:
analog-input: Analog Input (priority: 10000)
Active Port: analog-input
Formats:
pcm
Sink Input #0
Driver: module-loopback.c
Owner Module: 27
Client: n/a
Sink: 1
Sample Specification: s16le 1ch 8079Hz
Channel Map: mono
Format: pcm, format.sample_format = "\"s16le\"" format.rate = "8000" format.channels = "1" format.channel_map = "\"mono\""
Corked: no
Mute: no
Volume: mono: 65536 / 100% / 0.00 dB
balance 0.00
Buffer Latency: 703614669 usec
Sink Latency: 58058 usec
Resample method: speex-float-1
Properties:
media.role = "abstract"
module-stream-restore.id = "sink-input-by-media-role:abstract"
media.name = "Loopback of Live! Cam Notebook [VF0470] Mono"
device.icon_name = "audio-card-usb"
Source Output #0
Driver: module-loopback.c
Owner Module: 27
Client: n/a
Source: 6
Sample Specification: s16le 1ch 8000Hz
Channel Map: mono
Format: pcm
Corked: no
Mute: no
Volume: mono: 65536 / 100% / 0.00 dB
balance 0.00
Buffer Latency: 0 usec
Source Latency: 252 usec
Resample method: n/a
Properties:
media.role = "abstract"
module-stream-restore.id = "source-output-by-media-role:abstract"
media.name = "Loopback to SONY:HT-CT60BT"
media.icon_name = "audio-speakers-bluetooth"
Card #1
Name: alsa_card.usb-Creative_Labs_VF0470_Live__Cam_Notebook-01
Driver: module-alsa-card.c
Owner Module: 7
Properties:
alsa.card = "2"
alsa.card_name = "VF0470 Live! Cam Notebook"
alsa.long_card_name = "Creative Labs VF0470 Live! Cam Notebook at usb-0000:00:14.0-2, full speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:00:14.0-usb-0:2:1.1"
sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2:1.1/sound/card2"
udev.id = "usb-Creative_Labs_VF0470_Live__Cam_Notebook-01"
device.bus = "usb"
device.vendor.id = "041e"
device.vendor.name = "Creative Technology, Ltd"
device.product.id = "4068"
device.product.name = "Live! Cam Notebook [VF0470]"
device.serial = "Creative_Labs_VF0470_Live__Cam_Notebook"
device.string = "2"
device.description = "Live! Cam Notebook [VF0470]"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-usb"
Profiles:
input:mono-fallback: Mono Input (sinks: 0, sources: 1, priority: 1, available: yes)
input:multichannel-input: Multichannel Input (sinks: 0, sources: 1, priority: 1, available: yes)
off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
Active Profile: input:mono-fallback
Ports:
analog-input: Analog Input (priority: 10000, latency offset: 0 usec)
Part of profile(s): input:mono-fallback
multichannel-input: Multichannel Input (priority: 0, latency offset: 0 usec)
Part of profile(s): input:multichannel-input
Card #2
Name: alsa_card.pci-0000_00_1b.0
Driver: module-alsa-card.c
Owner Module: 8
Properties:
alsa.card = "0"
alsa.card_name = "HDA Intel PCH"
alsa.long_card_name = "HDA Intel PCH at 0xfb210000 irq 33"
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 = "8d20"
device.product.name = "C610/X99 series chipset HD Audio Controller"
device.form_factor = "internal"
device.string = "0"
device.description = "Built-in Audio"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Profiles:
input:analog-stereo: Analog Stereo Input (sinks: 0, sources: 1, priority: 65, available: yes)
output:analog-stereo: Analog Stereo Output (sinks: 1, sources: 0, priority: 6500, available: yes)
output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (sinks: 1, sources: 1, priority: 6565, available: yes)
output:analog-surround-21: Analog Surround 2.1 Output (sinks: 1, sources: 0, priority: 1300, available: yes)
output:analog-surround-21+input:analog-stereo: Analog Surround 2.1 Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 1365, available: yes)
output:analog-surround-40: Analog Surround 4.0 Output (sinks: 1, sources: 0, priority: 1200, available: yes)
output:analog-surround-40+input:analog-stereo: Analog Surround 4.0 Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 1265, available: yes)
output:analog-surround-41: Analog Surround 4.1 Output (sinks: 1, sources: 0, priority: 1300, available: yes)
output:analog-surround-41+input:analog-stereo: Analog Surround 4.1 Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 1365, available: yes)
output:analog-surround-50: Analog Surround 5.0 Output (sinks: 1, sources: 0, priority: 1200, available: yes)
output:analog-surround-50+input:analog-stereo: Analog Surround 5.0 Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 1265, available: yes)
output:analog-surround-51: Analog Surround 5.1 Output (sinks: 1, sources: 0, priority: 1300, available: yes)
output:analog-surround-51+input:analog-stereo: Analog Surround 5.1 Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 1365, available: yes)
output:iec958-stereo: Digital Stereo (IEC958) Output (sinks: 1, sources: 0, priority: 5500, available: yes)
output:iec958-stereo+input:analog-stereo: Digital Stereo (IEC958) Output + Analog Stereo Input (sinks: 1, sources: 1, priority: 5565, available: yes)
off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
Active Profile: output:analog-surround-50
Ports:
analog-input-front-mic: Front Microphone (priority: 8500, latency offset: 0 usec)
Properties:
device.icon_name = "audio-input-microphone"
Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:analog-surround-21+input:analog-stereo, output:analog-surround-40+input:analog-stereo, output:analog-surround-41+input:analog-stereo, output:analog-surround-50+input:analog-stereo, output:analog-surround-51+input:analog-stereo, output:iec958-stereo+input:analog-stereo
analog-input-rear-mic: Rear Microphone (priority: 8200, latency offset: 0 usec)
Properties:
device.icon_name = "audio-input-microphone"
Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:analog-surround-21+input:analog-stereo, output:analog-surround-40+input:analog-stereo, output:analog-surround-41+input:analog-stereo, output:analog-surround-50+input:analog-stereo, output:analog-surround-51+input:analog-stereo, output:iec958-stereo+input:analog-stereo
analog-input-mic: Microphone (priority: 8700, latency offset: 0 usec, not available)
Properties:
device.icon_name = "audio-input-microphone"
Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:analog-surround-21+input:analog-stereo, output:analog-surround-40+input:analog-stereo, output:analog-surround-41+input:analog-stereo, output:analog-surround-50+input:analog-stereo, output:analog-surround-51+input:analog-stereo, output:iec958-stereo+input:analog-stereo
analog-input-linein: Line In (priority: 8100, latency offset: 0 usec)
Part of profile(s): input:analog-stereo, output:analog-stereo+input:analog-stereo, output:analog-surround-21+input:analog-stereo, output:analog-surround-40+input:analog-stereo, output:analog-surround-41+input:analog-stereo, output:analog-surround-50+input:analog-stereo, output:analog-surround-51+input:analog-stereo, output:iec958-stereo+input:analog-stereo
analog-output-lineout: Line Out (priority: 9000, latency offset: 0 usec)
Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo, output:analog-surround-21, output:analog-surround-21+input:analog-stereo, output:analog-surround-40, output:analog-surround-40+input:analog-stereo, output:analog-surround-41, output:analog-surround-41+input:analog-stereo, output:analog-surround-50, output:analog-surround-50+input:analog-stereo, output:analog-surround-51, output:analog-surround-51+input:analog-stereo
analog-output-headphones: Headphones (priority: 9900, latency offset: 0 usec, not available)
Properties:
device.icon_name = "audio-headphones"
Part of profile(s): output:analog-stereo, output:analog-stereo+input:analog-stereo
iec958-stereo-output: Digital Output (S/PDIF) (priority: 0, latency offset: 0 usec)
Part of profile(s): output:iec958-stereo, output:iec958-stereo+input:analog-stereo
Card #3
Name: bluez_card.0C_A6_94_1C_C6_26
Driver: module-bluez5-device.c
Owner Module: 28
Properties:
device.description = "SONY:HT-CT60BT"
device.string = "0C:A6:94:1C:C6:26"
device.api = "bluez"
device.class = "sound"
device.bus = "bluetooth"
device.form_factor = "speaker"
bluez.path = "/org/bluez/hci0/dev_0C_A6_94_1C_C6_26"
bluez.class = "0x240414"
bluez.alias = "SONY:HT-CT60BT"
device.icon_name = "audio-speakers-bluetooth"
Profiles:
a2dp_sink: High Fidelity Playback (A2DP Sink) (sinks: 1, sources: 0, priority: 40, available: yes)
off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
Active Profile: a2dp_sink
Ports:
speaker-output: Speaker (priority: 0, latency offset: 0 usec, available)
Part of profile(s): a2dp_sink
speaker-input: Bluetooth Input (priority: 0, latency offset: 0 usec, not available)Last edited by TheNullPlayer (2020-06-11 02:32:01)
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#2 2020-06-11 07:31:37
- V1del
- Forum Moderator
- Registered: 2012-10-16
- Posts: 25,064
Re: Webcam [VF0470] audio distorted under pulseaudio
You have generally weird latency targets, did you set tsched=0 ? Revert that if so, restart pulseaudio, do a recording post
pacmd list-sources
pacmd list-source-outputsduring that.
Something to try as you are currently on the fallback profile, but you probably rather want to use the multichannel-input so
pacmd set-card-profile alsa_card.usb-Creative_Labs_VF0470_Live__Cam_Notebook-01 input:multichannel-inputOffline