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无论操作系统和麦克风如何，PulseAudio 偶尔都会没有声音/花栗鼠声音

tag-icon • tag-icon audio pulseaudio microphone mx-linux
无论操作系统和麦克风如何，PulseAudio 偶尔都会没有声音/花栗鼠声音

一般问题：我已经使用 Manjaro Mate 21.2.1（基于 Arch）和内核 5.4、5.10 和 5.13 一段时间了，直到我使用不同的软件（Skype、Zoom、基于浏览器的会议程序、OBS Studio、大胆）。我昨天切换到 MX Linux 版本 MX-21 Wildflower，希望全新安装能够解决问题。不幸的是，我仍然遇到和以前一样的问题。

症状：我使用的是带有集成麦克风的罗技摄像头。 Pavucontrol 确实向我显示了“输入设备”下的麦克风。大多数情况下，上述软件不会录制任何内容，而只会显示无声视频（因此，相机本身可以工作，但没有声音）。有时我会听到扭曲的花栗鼠声音。有时，运气好的话，声音会突然起作用——无需更改任何设置。有时，当我在 Skype 中进行测试呼叫并且声音正常时，当我随后呼叫某人时，该人听不到我的声音。有些浏览器告诉我它们无法检测到麦克风。这些症状在我使用 Manjaro 时出现，并且在使用 MX Linux 时仍然出现，没有任何差异。在 Pavucontrol 中，我无法解锁设备（参见下面的屏幕截图）。

什么时候开始？我相信情况从 2021 年 12 月左右开始，此后情况变得越来越糟。

到目前为止我尝试了什么？

  • 将发行版更改为 MX Linux
  • 通过以下方式重新安装pulseaudio：sudo apt-get purge pulseaudio和sudo apt-get purge pavucontrolrm -rf ~/.pulse/
  • 无限次重启
  • pulseaudio -k和pulseaudio --start
  • sudo chown -Rc $USER:$USER $HOME
  • 重新安装 Skype、Zoom 等并测试存储库中可用的所有软件包
  • 拔掉相机，插入另一个不同的相机，插入耳机。
  • （在使用 Manjaro 时，我还安装了pulseaudio-alsa - 我在 MX Linux 存储库中看不到任何类似的内容）

唯一幸运的是重新启动会议软件并召回其他人和/或和pulseaudio -k（pulseaudio --start 顺便说一句：我还使用了之前在另一台带有集成麦克风和摄像头的笔记本电脑上使用的相同 Manjaro Mate 版本，一切正常。）

我的 MX Linux 的详细信息：

  • neofetch（我只使用Manjaro图标，请不要混淆，我们这里讨论的是MX设备）：

  • 帕夫控制：

  • 使用命令sudo aplay -l，我得到：
card 0: SB [HDA ATI SB], device 0: VT1708S Analog [VT1708S Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 3: VT1708S Digital [VT1708S Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
  • 使用命令sudo aplay -L，我得到：
null
    Discard all samples (playback) or generate zero samples (capture)
default
    Playback/recording through the PulseAudio sound server
lavrate
    Rate Converter Plugin Using Libav/FFmpeg Library
samplerate
    Rate Converter Plugin Using Samplerate Library
speexrate
    Rate Converter Plugin Using Speex Resampler
jack
    JACK Audio Connection Kit
oss
    Open Sound System
pulse
    PulseAudio Sound Server
upmix
    Plugin for channel upmix (4,6,8)
vdownmix
    Plugin for channel downmix (stereo) with a simple spacialization
hw:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    Direct hardware device without any conversions
hw:CARD=SB,DEV=3
    HDA ATI SB, VT1708S Digital
    Direct hardware device without any conversions
plughw:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    Hardware device with all software conversions
plughw:CARD=SB,DEV=3
    HDA ATI SB, VT1708S Digital
    Hardware device with all software conversions
sysdefault:CARD=SB
    HDA ATI SB, VT1708S Analog
    Default Audio Device
front:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    Front output / input
surround21:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Digital
    HDMI Audio Output
dmix:CARD=SB,DEV=0
    HDA ATI SB, VT1708S Analog
    Direct sample mixing device
dmix:CARD=SB,DEV=3
    HDA ATI SB, VT1708S Digital
    Direct sample mixing device
usbstream:CARD=SB
    HDA ATI SB
    USB Stream Output
hw:CARD=HDMI,DEV=3
    HDA ATI HDMI, HDMI 0
    Direct hardware device without any conversions
plughw:CARD=HDMI,DEV=3
    HDA ATI HDMI, HDMI 0
    Hardware device with all software conversions
hdmi:CARD=HDMI,DEV=0
    HDA ATI HDMI, HDMI 0
    HDMI Audio Output
dmix:CARD=HDMI,DEV=3
    HDA ATI HDMI, HDMI 0
    Direct sample mixing device
usbstream:CARD=HDMI
    HDA ATI HDMI
    USB Stream Output
usbstream:CARD=U0x46d0x809
    USB Device 0x46d:0x809
    USB Stream Output
  • 与pacmd list-cards，我得到：
3 card(s) available.
    index: 0
    name: <alsa_card.pci-0000_01_05.1>
    driver: <module-alsa-card.c>
    owner module: 6
    properties:
        alsa.card = "1"
        alsa.card_name = "HDA ATI HDMI"
        alsa.long_card_name = "HDA ATI HDMI at 0xfeae8000 irq 19"
        alsa.driver_name = "snd_hda_intel"
        device.bus_path = "pci-0000:01:05.1"
        sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:05.1/sound/card1"
        device.bus = "pci"
        device.vendor.id = "1002"
        device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
        device.product.id = "960f"
        device.product.name = "RS780 HDMI Audio [Radeon 3000/3100 / HD 3200/3300]"
        device.string = "1"
        device.description = "RS780 HDMI Audio [Radeon 3000/3100 / HD 3200/3300]"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card-pci"
    profiles:
        output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5900, available: no)
        output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 800, available: no)
        output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 800, available: no)
        off: Off (priority 0, available: unknown)
    active profile: <off>
    ports:
        hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
            properties:
                device.icon_name = "video-display"
    index: 1
    name: <alsa_card.usb-046d_0809_FDC5DBAD-02>
    driver: <module-alsa-card.c>
    owner module: 7
    properties:
        alsa.card = "2"
        alsa.card_name = "USB Device 0x46d:0x809"
        alsa.long_card_name = "USB Device 0x46d:0x809 at usb-0000:02:00.0-1, high speed"
        alsa.driver_name = "snd_usb_audio"
        device.bus_path = "pci-0000:02:00.0-usb-0:1:1.2"
        sysfs.path = "/devices/pci0000:00/0000:00:07.0/0000:02:00.0/usb3/3-1/3-1:1.2/sound/card2"
        udev.id = "usb-046d_0809_FDC5DBAD-02"
        device.bus = "usb"
        device.vendor.id = "046d"
        device.vendor.name = "Logitech, Inc."
        device.product.id = "0809"
        device.product.name = "Webcam Pro 9000"
        device.serial = "046d_0809_FDC5DBAD"
        device.form_factor = "webcam"
        device.string = "2"
        device.description = "Webcam Pro 9000"
        module-udev-detect.discovered = "1"
        device.icon_name = "camera-web-usb"
    profiles:
        input:mono-fallback: Mono Input (priority 1, available: unknown)
        input:multichannel-input: Multichannel Input (priority 1, available: unknown)
        off: Off (priority 0, available: unknown)
    active profile: <input:mono-fallback>
    sources:
        alsa_input.usb-046d_0809_FDC5DBAD-02.mono-fallback/#0: Webcam Pro 9000 Mono
    ports:
        analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: unknown)
            properties:
                device.icon_name = "audio-input-microphone"
    index: 2
    name: <alsa_card.pci-0000_00_14.2>
    driver: <module-alsa-card.c>
    owner module: 8
    properties:
        alsa.card = "0"
        alsa.card_name = "HDA ATI SB"
        alsa.long_card_name = "HDA ATI SB at 0xfe8f4000 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/card0"
        device.bus = "pci"
        device.vendor.id = "1002"
        device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
        device.product.id = "4383"
        device.product.name = "SBx00 Azalia (Intel HDA) (M4A785TD Motherboard)"
        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 (priority 65, available: no)
        output:analog-stereo: Analog Stereo Output (priority 6500, available: unknown)
        output:analog-stereo+input:analog-stereo: Analog Stereo Duplex (priority 6565, available: no)
        output:analog-surround-21: Analog Surround 2.1 Output (priority 1300, available: unknown)
        output:analog-surround-21+input:analog-stereo: Analog Surround 2.1 Output + Analog Stereo Input (priority 1365, available: no)
        output:analog-surround-40: Analog Surround 4.0 Output (priority 1200, available: unknown)
        output:analog-surround-40+input:analog-stereo: Analog Surround 4.0 Output + Analog Stereo Input (priority 1265, available: no)
        output:analog-surround-41: Analog Surround 4.1 Output (priority 1300, available: unknown)
        output:analog-surround-41+input:analog-stereo: Analog Surround 4.1 Output + Analog Stereo Input (priority 1365, available: no)
        output:analog-surround-50: Analog Surround 5.0 Output (priority 1200, available: unknown)
        output:analog-surround-50+input:analog-stereo: Analog Surround 5.0 Output + Analog Stereo Input (priority 1265, available: no)
        output:analog-surround-51: Analog Surround 5.1 Output (priority 1300, available: unknown)
        output:analog-surround-51+input:analog-stereo: Analog Surround 5.1 Output + Analog Stereo Input (priority 1365, available: no)
        output:analog-surround-71: Analog Surround 7.1 Output (priority 1200, available: unknown)
        output:analog-surround-71+input:analog-stereo: Analog Surround 7.1 Output + Analog Stereo Input (priority 1265, available: no)
        output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5900, available: unknown)
        output:hdmi-stereo+input:analog-stereo: Digital Stereo (HDMI) Output + Analog Stereo Input (priority 5965, available: no)
        off: Off (priority 0, available: unknown)
    active profile: <output:analog-stereo>
    sinks:
        alsa_output.pci-0000_00_14.2.analog-stereo/#0: Built-in Audio Analog Stereo
    sources:
        alsa_output.pci-0000_00_14.2.analog-stereo.monitor/#1: Monitor of Built-in Audio Analog Stereo
    ports:
        analog-input-front-mic: Front Microphone (priority 8500, latency offset 0 usec, available: no)
            properties:
                device.icon_name = "audio-input-microphone"
        analog-input-rear-mic: Rear Microphone (priority 8200, latency offset 0 usec, available: no)
            properties:
                device.icon_name = "audio-input-microphone"
        analog-input-linein: Line In (priority 8100, latency offset 0 usec, available: no)
            properties:
                
        analog-output-lineout: Line Out (priority 9000, latency offset 0 usec, available: yes)
            properties:
                
        analog-output-headphones: Headphones (priority 9900, latency offset 0 usec, available: no)
            properties:
                device.icon_name = "audio-headphones"
        hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: unknown)
            properties:
                device.icon_name = "video-display"
  • 与pacmd list-sources，我得到：
    index: 0
    name: <alsa_input.usb-046d_0809_FDC5DBAD-02.mono-fallback>
    driver: <module-alsa-card.c>
    flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
    state: SUSPENDED
    suspend cause: IDLE
    priority: 9040
    volume: mono: 65536 / 100% / 0.00 dB
            balance 0.00
    base volume: 19944 /  30% / -31.00 dB
    volume steps: 65537
    muted: no
    current latency: 0.00 ms
    max rewind: 0 KiB
    sample spec: s16le 1ch 48000Hz
    channel map: mono
                 Mono
    used by: 0
    linked by: 0
    configured latency: 0.00 ms; range is 0.50 .. 2000.00 ms
    card: 1 <alsa_card.usb-046d_0809_FDC5DBAD-02>
    module: 7
    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 = "USB Device 0x46d:0x809"
        alsa.long_card_name = "USB Device 0x46d:0x809 at usb-0000:02:00.0-1, high speed"
        alsa.driver_name = "snd_usb_audio"
        device.bus_path = "pci-0000:02:00.0-usb-0:1:1.2"
        sysfs.path = "/devices/pci0000:00/0000:00:07.0/0000:02:00.0/usb3/3-1/3-1:1.2/sound/card2"
        udev.id = "usb-046d_0809_FDC5DBAD-02"
        device.bus = "usb"
        device.vendor.id = "046d"
        device.vendor.name = "Logitech, Inc."
        device.product.id = "0809"
        device.product.name = "Webcam Pro 9000"
        device.serial = "046d_0809_FDC5DBAD"
        device.form_factor = "webcam"
        device.string = "hw:2"
        device.buffering.buffer_size = "192000"
        device.buffering.fragment_size = "96000"
        device.access_mode = "mmap+timer"
        device.profile.name = "mono-fallback"
        device.profile.description = "Mono"
        device.description = "Webcam Pro 9000 Mono"
        module-udev-detect.discovered = "1"
        device.icon_name = "camera-web-usb"
    ports:
        analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: unknown)
            properties:
                device.icon_name = "audio-input-microphone"
    active port: <analog-input-mic>
 - index: 1
    name: <alsa_output.pci-0000_00_14.2.analog-stereo.monitor>
    driver: <module-alsa-card.c>
    flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
    state: SUSPENDED
    suspend cause: IDLE
    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: 0 KiB
    sample spec: s16le 2ch 44100Hz
    channel map: front-left,front-right
                 Stereo
    used by: 0
    linked by: 0
    configured latency: 0.00 ms; range is 0.50 .. 1999.82 ms
    monitor_of: 0
    card: 2 <alsa_card.pci-0000_00_14.2>
    module: 8
    properties:
        device.description = "Monitor of Built-in Audio Analog Stereo"
        device.class = "monitor"
        alsa.card = "0"
        alsa.card_name = "HDA ATI SB"
        alsa.long_card_name = "HDA ATI SB at 0xfe8f4000 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/card0"
        device.bus = "pci"
        device.vendor.id = "1002"
        device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
        device.product.id = "4383"
        device.product.name = "SBx00 Azalia (Intel HDA) (M4A785TD Motherboard)"
        device.form_factor = "internal"
        device.string = "0"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card-pci"
  • 与pacmd list-sinks，我得到：
1 sink(s) available.
  * index: 0
    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: SUSPENDED
    suspend cause: IDLE
    priority: 9039
    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 request: 0 KiB
    max rewind: 0 KiB
    monitor source: 1
    sample spec: s16le 2ch 44100Hz
    channel map: front-left,front-right
                 Stereo
    used by: 0
    linked by: 0
    configured latency: 0.00 ms; range is 0.50 .. 1999.82 ms
    card: 2 <alsa_card.pci-0000_00_14.2>
    module: 8
    properties:
        alsa.resolution_bits = "16"
        device.api = "alsa"
        device.class = "sound"
        alsa.class = "generic"
        alsa.subclass = "generic-mix"
        alsa.name = "VT1708S Analog"
        alsa.id = "VT1708S Analog"
        alsa.subdevice = "0"
        alsa.subdevice_name = "subdevice #0"
        alsa.device = "0"
        alsa.card = "0"
        alsa.card_name = "HDA ATI SB"
        alsa.long_card_name = "HDA ATI SB at 0xfe8f4000 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/card0"
        device.bus = "pci"
        device.vendor.id = "1002"
        device.vendor.name = "Advanced Micro Devices, Inc. [AMD/ATI]"
        device.product.id = "4383"
        device.product.name = "SBx00 Azalia (Intel HDA) (M4A785TD Motherboard)"
        device.form_factor = "internal"
        device.string = "front:0"
        device.buffering.buffer_size = "352768"
        device.buffering.fragment_size = "176384"
        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-headphones: Headphones (priority 9900, latency offset 0 usec, available: no)
            properties:
                device.icon_name = "audio-headphones"
    active port: <analog-output-lineout>
  • 和pulseaudio -vvvv，我收到一个错误：
I: [pulseaudio] main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not permitted
I: [pulseaudio] main.c: setrlimit(RLIMIT_RTPRIO, (9, 9)) failed: Operation not permitted
D: [pulseaudio] core-rtclock.c: Timer slack is set to 50 us.
I: [pulseaudio] core-util.c: Failed to acquire high-priority scheduling: No such file or directory
I: [pulseaudio] main.c: This is PulseAudio 14.2
D: [pulseaudio] main.c: Compilation CFLAGS: -g -O2 -ffile-prefix-map=/build/pulseaudio-eJtUKc/pulseaudio-14.2=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -W -Wextra -pipe -Wno-long-long -Wno-overlength-strings -Wunsafe-loop-optimizations -Wundef -Wformat=2 -Wlogical-op -Wsign-compare -Wformat-security -Wmissing-include-dirs -Wformat-nonliteral -Wpointer-arith -Winit-self -Wdeclaration-after-statement -Wfloat-equal -Wmissing-prototypes -Wredundant-decls -Wmissing-declarations -Wmissing-noreturn -Wshadow -Wendif-labels -Wcast-align -Wstrict-aliasing -Wwrite-strings -Wno-unused-parameter -fno-common -fdiagnostics-show-option -fdiagnostics-color=auto
D: [pulseaudio] main.c: Running on host: Linux x86_64 5.10.0-11-amd64 #1 SMP Debian 5.10.92-1 (2022-01-18)
D: [pulseaudio] main.c: Found 6 CPUs.
I: [pulseaudio] main.c: Page size is 4096 bytes
D: [pulseaudio] main.c: Compiled with Valgrind support: no
D: [pulseaudio] main.c: Running in valgrind mode: no
D: [pulseaudio] main.c: Running in VM: no
D: [pulseaudio] main.c: Running from build tree: no
D: [pulseaudio] main.c: Optimized build: yes
D: [pulseaudio] main.c: FASTPATH defined, only fast path asserts disabled.
I: [pulseaudio] main.c: Machine ID is 995013c2a2f4b36efda13e9561e972d6.
I: [pulseaudio] main.c: Session ID is 1.
I: [pulseaudio] main.c: Using runtime directory /run/user/1000/pulse.
I: [pulseaudio] main.c: Using state directory /home/X/.config/pulse.
I: [pulseaudio] main.c: Using modules directory /usr/lib/pulse-14.2/modules.
I: [pulseaudio] main.c: Running in system mode: no
E: [pulseaudio] pid.c: Daemon already running.
E: [pulseaudio] main.c: pa_pid_file_create() failed.


X        3340    3328  0 16:13 ?        00:00:15 /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0 /usr/lib/x86_64-linux-gnu/xfce4/panel/plugins/libpulseaudio-plugin.so 5 29360138 pulseaudio PulseAudio Plugin Adjust the audio volume of the PulseAudio sound system
X       45361       1  0 20:06 ?        00:00:03 /usr/bin/pulseaudio --start --log-target=syslog
X       49158   47280  0 20:19 pts/1    00:00:00 grep pulse

通过在终端中启动大胆，它给出了这个错误：

ALSA lib confmisc.c:767:(parse_card) cannot find card 'Camera'
ALSA lib conf.c:4745:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:4745:(_snd_config_evaluate) function snd_func_concat returned error: No such device
ALSA lib confmisc.c:1246:(snd_func_refer) error evaluating name

和


*** BUG ***
In pixman_region32_init_rect: Invalid rectangle passed
Set a breakpoint on '_pixman_log_error' to debug

21:55:10: Debug: AudioIO::GetBestRate() for playback
21:55:10: Debug: GetBestRate() suggested rate 44100 Hz
21:55:10: Debug: GetBestRate() Returning 44100 Hz

我还注意到，通过在同一台电脑上说话和播放音乐时使用 audacity 进行录音，audacity 只能录制音乐（因此是内部声音），而不能录制我的声音（外部声音）。

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