耳机声音输出与线路输出混合

2024-6-5 • tag-icon

问题摘要

当选择线路输出扬声器作为声音输出时，声音很好。声音来自仅有的连接到线路输出端口的扬声器发出声音。但是，当选择耳机作为输出设备时，声音会从两个都来自耳机和扬声器。

（编辑1）我在 Windows 10 中测试过（使用实时 USB），问题没有出现。所以，这肯定是软件问题。

细节

我的台式计算机有三个声音输出选项：

HDMI/显示端口（未使用）
前置耳机端口（连接耳机）
背面的线路输出端口（连接扬声器）

当选择线路输出作为输出设备时，只能从连接到线路输出端口的扬声器听到声音。这没有问题。

但是，当选择耳机作为输出设备时，会听到声音两个都从耳机和连接至线路输出端口的扬声器。

这真的很奇怪，违背了耳机的初衷，即保护隐私和不打扰他人。

当前的设置

我找到的声卡如下。

sudo aplay -l

**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3234 Analog [ALC3234 Analog]

其余部分

我甚至尝试在设置中将线路输出的音量设置为零。这对线路输出扬声器有效。但是，当选择耳机时，这似乎对音量没有任何影响。即使将音量设置为零，线路输出扬声器的声音也同样响亮。

我不确定输出是否alsamixer有用。但无论如何，还是给出来。

编辑1

我使用实时 USB 启动了 Windows 10 中的 PC。并再次测试了声音输出。问题没有出现。所以，这肯定是软件（某个配置文件？）问题。

编辑2

输出pacmd list-sinks（问题发生时产生的）

1 sink(s) available.
  * index: 1
  name: <alsa_output.pci-0000_00_1f.3.analog-stereo>
  driver: <module-alsa-card.c>
  flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
  state: RUNNING
  suspend cause: (none)
  priority: 9039
  volume: front-left: 18352 /  28% / -33.17 dB,   front-right: 18352 /  28% / -33.17 dB
          balance 0.00
  base volume: 65536 / 100% / 0.00 dB
  volume steps: 65537
  muted: no
  current latency: 22.61 ms
  max request: 4 KiB
  max rewind: 4 KiB
  monitor source: 1
  sample spec: s16le 2ch 44100Hz
  channel map: front-left,front-right
               Stereo
  used by: 1
  linked by: 1
  configured latency: 23.22 ms; range is 0.50 .. 2000.00 ms
  card: 0 <alsa_card.pci-0000_00_1f.3>
  module: 23
  properties:
      alsa.resolution_bits = "16"
      device.api = "alsa"
      device.class = "sound"
      alsa.class = "generic"
      alsa.subclass = "generic-mix"
      alsa.name = "ALC3234 Analog"
      alsa.id = "ALC3234 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 0xf7040000 irq 129"
      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"
      device.vendor.id = "8086"
      device.vendor.name = "Intel Corporation"
      device.product.id = "a170"
      device.product.name = "100 Series/C230 Series Chipset Family HD Audio Controller"
      device.form_factor = "internal"
      device.string = "front:0"
      device.buffering.buffer_size = "352800"
      device.buffering.fragment_size = "176400"
      device.access_mode = "mmap+timer"
      device.profile.name = "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-output-lineout: Line Out (priority 9000, latency offset 0 usec, available: yes)
          properties:
              
      analog-output-speaker: Speakers (priority 10000, latency offset 0 usec, available: no)
          properties:
              device.icon_name = "audio-speakers"
      analog-output-headphones: Headphones (priority 9900, latency offset 0 usec, available: unknown)
          properties:
              device.icon_name = "audio-headphones"
  active port: <analog-output-headphones>

编辑3

输出pactl list sink-inputs（通过扬声器播放时，无问题场景）

Sink Input #20
  Driver: protocol-native.c
  Owner Module: 10
  Client: 34
  Sink: 1
  Sample Specification: float32le 2ch 44100Hz
  Channel Map: front-left,front-right
  Format: pcm, format.sample_format = "\"float32le\""  format.rate = "44100"  format.channels = "2"  format.channel_map = "\"front-left,front-right\""
  Corked: no
  Mute: no
  Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
          balance 0.00
  Buffer Latency: 42811 usec
  Sink Latency: 23180 usec
  Resample method: copy
  Properties:
      application.icon_name = "google-chrome"
      media.name = "Playback"
      application.name = "Google Chrome"
      native-protocol.peer = "UNIX socket client"
      native-protocol.version = "34"
      application.process.id = "3091"
      application.process.user = "masroor"
      application.process.host = "masroor-OptiPlex-5040"
      application.process.binary = "chrome"
      application.language = "en_US.UTF-8"
      window.x11.display = ":0"
      application.process.machine_id = "749ee17244e440b5b766e258f177b412"
      module-stream-restore.id = "sink-input-by-application-name:Google Chrome"

输出pactl list sink-inputs（通过耳机播放时，问题场景，声音从耳机和扬声器中同时发出，虽然应该从仅有的耳机中的声音）

Sink Input #20
  Driver: protocol-native.c
  Owner Module: 10
  Client: 34
  Sink: 1
  Sample Specification: float32le 2ch 44100Hz
  Channel Map: front-left,front-right
  Format: pcm, format.sample_format = "\"float32le\""  format.rate = "44100"  format.channels = "2"  format.channel_map = "\"front-left,front-right\""
  Corked: no
  Mute: no
  Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
          balance 0.00
  Buffer Latency: 45714 usec
  Sink Latency: 22927 usec
  Resample method: copy
  Properties:
      application.icon_name = "google-chrome"
      media.name = "Playback"
      application.name = "Google Chrome"
      native-protocol.peer = "UNIX socket client"
      native-protocol.version = "34"
      application.process.id = "3091"
      application.process.user = "masroor"
      application.process.host = "masroor-OptiPlex-5040"
      application.process.binary = "chrome"
      application.language = "en_US.UTF-8"
      window.x11.display = ":0"
      application.process.machine_id = "749ee17244e440b5b766e258f177b412"
      module-stream-restore.id = "sink-input-by-application-name:Google Chrome"

答案1

您可以尝试启用同步输出功能，检查其工作情况，然后禁用它。也许这可以解决您的问题。

安装paprefs、运行并启用同时输出。然后运行pavucontrol并转到输出设备，并尝试修改选项（你应该看到同时输出...）或前往设置->声音->输出->同时输出...，并对其进行修补。

与此同时，你可以检查一下是否有任何奇怪的事情发生 pavucontrol->配置。

来源：

通过两个或更多输出/设备播放声音

答案1

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