确定哪个进程或程序发出了某种噪音

Question 1

大多数 Ubuntu 安装都使用 PulseAudio，因此可以

列出连接到脉冲音频的所有进程

运行此命令pactl list clients

然而，如果你真的想要的话，它会给你提供可能的声音制作过程：

抓住发出声音的过程然后运行此命令：

watch -n0.5 'pacmd list-sink-inputs | tee -a sound-inputs.log'

过一会儿，你会看到哪些进程正在发出声音，它们可能很快就会消失，这就是tee -a sound-inputs.log命令存储/记录sound-inputs.log所有信息的原因，你可以查看哪些进程确切地是制造噪音现在。

您可以通过命令查看它less sound-inputs，示例输出如下：

0 sink input(s) available.
0 sink input(s) available.
0 sink input(s) available.
1 sink input(s) available.
    index: 277
    driver: <protocol-native.c>
    flags: START_CORKED 
    state: RUNNING
    sink: 0 <alsa_output.pci-0000_00_1b.0.analog-stereo>
    volume: front-left: 55420 /  85% / -4.37 dB,   front-right: 55420 /  85% / -4.37 dB
            balance 0.00
    muted: no
    current latency: 35.85 ms
    requested latency: 7.52 ms
    sample spec: float32le 2ch 44100Hz
    channel map: front-left,front-right
                 Stereo
    resample method: copy
    module: 10
    client: 1884 <Chromium>
    properties:
        application.icon_name = "chromium-browser"
        media.name = "Playback"
        application.name = "Chromium"
        native-protocol.peer = "UNIX socket client"
        native-protocol.version = "33"
        application.process.id = "2993986"
        application.process.user = "aneutrino"
        application.process.host = "xiexie"
        application.process.binary = "Discord"
        application.language = "en_US.UTF-8"
        window.x11.display = ":0"
        application.process.machine_id = "13335995d81e4f4faf75ac28835b4f8c"
        module-stream-restore.id = "sink-input-by-application-name:Chromium"

在上面的例子中，它是一个使用声音的Discord聊天应用程序，我已进入设置并禁用其中的声音，但我也可以简单地杀死它chrome-browserPID 2993986kill 2993986

Answer