Pulseaudio. STEREO в MONO
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Как в pulseaudio выводить звук в mono
Здаров. Иногда возникает необходимость выводить весь звук в pulseaudio в режиме mono, то есть оба канала микшируются в один. Мне, например, понадобилось, потому что один из наушников издох, а слушать только правый канал не очень-то и приятно. Так вот, сделать задуманное оказалось довольно просто.
1) Для начала посмотрим выхлоп команды pacmd list-sinks в терминале:
pacmd list-sinks
2 sink(s) available.
index: 0
name: <alsa_output.pci-0000_00_01.1.hdmi-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: IDLE
suspend cause:
priority: 9950
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: 39,86 ms
max request: 6 KiB
max rewind: 344 KiB
monitor source: 0
sample spec: s16le 2-канальный 4410
channel map: front-left,front-right
Стерео
used by: 0
linked by: 1
configured latency: 40,00 ms; range is 0,50 .. 1999,82 ms
card: 0 <alsa_card.pci-0000_00_01.1>
module: 6
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "HDMI 0"
alsa.id = "HDMI 0"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "3"
alsa.card = "0"
alsa.card_name = "HDA ATI HDMI"
alsa.long_card_name = "HDA ATI HDMI at 0xfeb44000 irq 33"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:01.1"
sysfs.path = "/devices/pci0000:00/0000:00:01.1/sound/card0"
device.bus = "pci"
device.vendor.id = "1002"
device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
device.product.id = "9902"
device.product.name = "Trinity HDMI Audio Controller"
device.form_factor = "internal"
device.string = "hdmi:0"
device.buffering.buffer_size = "352768"
device.buffering.fragment_size = "176384"
device.access_mode = "mmap+timer"
device.profile.name = "hdmi-stereo"
device.profile.description = "Digital Stereo (HDMI)"
device.description = "Встроенное аудио Digital Stereo (HDMI)"
alsa.mixer_name = "ATI R6xx HDMI"
alsa.components = "HDA:1002aa01,00aa0100,00100300"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
active port: <hdmi-output-0>
* index: 1
name: <alsa_output.pci-0000_00_14.2.analog-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: IDLE
suspend cause:
priority: 9959
volume: front-left: 40108 / 61% / -12,79 dB, front-right: 40108 / 61% / -12,79 dB
balance 0,00
base volume: 65536 / 100% / 0,00 dB
volume steps: 65537
muted: no
current latency: 39,92 ms
max request: 6 KiB
max rewind: 344 KiB
monitor source: 1
sample spec: s16le 2-канальный 4410
channel map: front-left,front-right
Стерео
used by: 0
linked by: 1
configured latency: 40,00 ms; range is 0,50 .. 1999,82 ms
card: 1 <alsa_card.pci-0000_00_14.2>
module: 7
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC269VC Analog"
alsa.id = "ALC269VC 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 0xfeb40000 irq 16"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:14.2"
sysfs.path = "/devices/pci0000:00/0000:00:14.2/sound/card1"
device.bus = "pci"
device.vendor.id = "1022"
device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
device.product.id = "780d"
device.product.name = "FCH Azalia Controller"
device.form_factor = "internal"
device.string = "front:1"
device.buffering.buffer_size = "352768"
device.buffering.fragment_size = "176384"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Аналоговый стерео"
device.description = "Встроенное аудио Аналоговый стерео"
alsa.mixer_name = "Realtek ALC269VC"
alsa.components = "HDA:10ec0269,144dc0da,00100202"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
analog-output-speaker: Динамики (priority 10000, latency offset 0 usec, available: no)
properties:
device.icon_name = "audio-speakers"
analog-output-headphones: Аналоговые наушники (priority 9000, latency offset 0 usec, available: yes)
properties:
device.icon_name = "audio-headphones"
active port: <analog-output-headphones>
2 sink(s) available.
index: 0
name: <alsa_output.pci-0000_00_01.1.hdmi-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: IDLE
suspend cause:
priority: 9950
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: 39,86 ms
max request: 6 KiB
max rewind: 344 KiB
monitor source: 0
sample spec: s16le 2-канальный 4410
channel map: front-left,front-right
Стерео
used by: 0
linked by: 1
configured latency: 40,00 ms; range is 0,50 .. 1999,82 ms
card: 0 <alsa_card.pci-0000_00_01.1>
module: 6
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "HDMI 0"
alsa.id = "HDMI 0"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "3"
alsa.card = "0"
alsa.card_name = "HDA ATI HDMI"
alsa.long_card_name = "HDA ATI HDMI at 0xfeb44000 irq 33"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:01.1"
sysfs.path = "/devices/pci0000:00/0000:00:01.1/sound/card0"
device.bus = "pci"
device.vendor.id = "1002"
device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
device.product.id = "9902"
device.product.name = "Trinity HDMI Audio Controller"
device.form_factor = "internal"
device.string = "hdmi:0"
device.buffering.buffer_size = "352768"
device.buffering.fragment_size = "176384"
device.access_mode = "mmap+timer"
device.profile.name = "hdmi-stereo"
device.profile.description = "Digital Stereo (HDMI)"
device.description = "Встроенное аудио Digital Stereo (HDMI)"
alsa.mixer_name = "ATI R6xx HDMI"
alsa.components = "HDA:1002aa01,00aa0100,00100300"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
active port: <hdmi-output-0>
* index: 1
name: <alsa_output.pci-0000_00_14.2.analog-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: IDLE
suspend cause:
priority: 9959
volume: front-left: 40108 / 61% / -12,79 dB, front-right: 40108 / 61% / -12,79 dB
balance 0,00
base volume: 65536 / 100% / 0,00 dB
volume steps: 65537
muted: no
current latency: 39,92 ms
max request: 6 KiB
max rewind: 344 KiB
monitor source: 1
sample spec: s16le 2-канальный 4410
channel map: front-left,front-right
Стерео
used by: 0
linked by: 1
configured latency: 40,00 ms; range is 0,50 .. 1999,82 ms
card: 1 <alsa_card.pci-0000_00_14.2>
module: 7
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC269VC Analog"
alsa.id = "ALC269VC 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 0xfeb40000 irq 16"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:14.2"
sysfs.path = "/devices/pci0000:00/0000:00:14.2/sound/card1"
device.bus = "pci"
device.vendor.id = "1022"
device.vendor.name = "Advanced Micro Devices, Inc. [AMD]"
device.product.id = "780d"
device.product.name = "FCH Azalia Controller"
device.form_factor = "internal"
device.string = "front:1"
device.buffering.buffer_size = "352768"
device.buffering.fragment_size = "176384"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Аналоговый стерео"
device.description = "Встроенное аудио Аналоговый стерео"
alsa.mixer_name = "Realtek ALC269VC"
alsa.components = "HDA:10ec0269,144dc0da,00100202"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
analog-output-speaker: Динамики (priority 10000, latency offset 0 usec, available: no)
properties:
device.icon_name = "audio-speakers"
analog-output-headphones: Аналоговые наушники (priority 9000, latency offset 0 usec, available: yes)
properties:
device.icon_name = "audio-headphones"
active port: <analog-output-headphones>
Нас интересуют строки index и name. Ищем в выхлопе устройство, через которое мы слушаем звук, в моем случае это name: <alsa_output.pci-0000_00_14.2.analog-stereo>. Запоминаем.
2) Открываем от root файлик /etc/pulse/default.pa и в самый конец добавляем
load-module module-remap-sink master=alsa_output.pci-0000_00_14.2.analog-stereo sink_name=mono channels=2 channel_map=mono,mono set-default-sink mono
где в параметр master вводим устройство, которое нашли в шаге номер 1.
3) Рестартуем pulseaudio (от обычного пользователя)
pulseaudio -k; pulseaudio -D
4) Включаем воспроизведение чего-либо, и выставляем в Pavucontrol (или чем ты там пользуешься) вывод в наше новое (remapped) виртуальное устройство
Опубликовано 24 Июля 2017 в категории Звук
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