我将 jackd 和pulseaudio 与pulseaudio-jack-module 一起使用，这样我就可以同时运行pulseaudio 和jack。除了网页浏览和一些其他应用程序外，我主要使用 jack 应用程序。
我正在尝试录制音频，但如果我尝试录制音频，我会得到非常糟糕的反馈。如果我插入耳机，反馈大部分都会消失，但如果我触摸笔记本电脑，我可以在录音中听到它。
听起来 linux 仍在通过我的内置麦克风进行录音。我想知道我是否可以解决这个问题，或者我需要购买 USB 麦克风或类似的东西吗？
我正在使用kxstudio的音频
这是一些调试输出
aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
default
Playback/recording through the PulseAudio sound server
sysdefault:CARD=Loopback
Loopback, Loopback PCM
Default Audio Device
front:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Front speakers
surround21:CARD=Loopback,DEV=0
Loopback, Loopback PCM
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=Loopback,DEV=0
Loopback, Loopback PCM
4.0 Surround output to Front and Rear speakers
surround41:CARD=Loopback,DEV=0
Loopback, Loopback PCM
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Loopback,DEV=0
Loopback, Loopback PCM
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Loopback,DEV=0
Loopback, Loopback PCM
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Loopback,DEV=0
Loopback, Loopback PCM
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
dmix:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Direct sample mixing device
dmix:CARD=Loopback,DEV=1
Loopback, Loopback PCM
Direct sample mixing device
dsnoop:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Direct sample snooping device
dsnoop:CARD=Loopback,DEV=1
Loopback, Loopback PCM
Direct sample snooping device
hw:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Direct hardware device without any conversions
hw:CARD=Loopback,DEV=1
Loopback, Loopback PCM
Direct hardware device without any conversions
plughw:CARD=Loopback,DEV=0
Loopback, Loopback PCM
Hardware device with all software conversions
plughw:CARD=Loopback,DEV=1
Loopback, Loopback PCM
Hardware device with all software conversions
sysdefault:CARD=PCH
HDA Intel PCH, CS4208 Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Front speakers
surround21:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Digital
IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Direct sample mixing device
dmix:CARD=PCH,DEV=1
HDA Intel PCH, CS4208 Digital
Direct sample mixing device
dsnoop:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Direct sample snooping device
dsnoop:CARD=PCH,DEV=1
HDA Intel PCH, CS4208 Digital
Direct sample snooping device
hw:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Direct hardware device without any conversions
hw:CARD=PCH,DEV=1
HDA Intel PCH, CS4208 Digital
Direct hardware device without any conversions
plughw:CARD=PCH,DEV=0
HDA Intel PCH, CS4208 Analog
Hardware device with all software conversions
plughw:CARD=PCH,DEV=1
HDA Intel PCH, CS4208 Digital
Hardware device with all software conversions
hdmi:CARD=NVidia,DEV=0
HDA NVidia, HDMI 0
HDMI Audio Output
hdmi:CARD=NVidia,DEV=1
HDA NVidia, HDMI 1
HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
HDA NVidia, HDMI 2
HDMI Audio Output
dmix:CARD=NVidia,DEV=3
HDA NVidia, HDMI 0
Direct sample mixing device
dmix:CARD=NVidia,DEV=7
HDA NVidia, HDMI 1
Direct sample mixing device
dmix:CARD=NVidia,DEV=8
HDA NVidia, HDMI 2
Direct sample mixing device
dsnoop:CARD=NVidia,DEV=3
HDA NVidia, HDMI 0
Direct sample snooping device
dsnoop:CARD=NVidia,DEV=7
HDA NVidia, HDMI 1
Direct sample snooping device
dsnoop:CARD=NVidia,DEV=8
HDA NVidia, HDMI 2
Direct sample snooping device
hw:CARD=NVidia,DEV=3
HDA NVidia, HDMI 0
Direct hardware device without any conversions
hw:CARD=NVidia,DEV=7
HDA NVidia, HDMI 1
Direct hardware device without any conversions
hw:CARD=NVidia,DEV=8
HDA NVidia, HDMI 2
Direct hardware device without any conversions
plughw:CARD=NVidia,DEV=3
HDA NVidia, HDMI 0
Hardware device with all software conversions
plughw:CARD=NVidia,DEV=7
HDA NVidia, HDMI 1
Hardware device with all software conversions
plughw:CARD=NVidia,DEV=8
HDA NVidia, HDMI 2
Hardware device with all software conversions
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 0: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 1: PCH [HDA Intel PCH], device 0: CS4208 Analog [CS4208 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: PCH [HDA Intel PCH], device 1: CS4208 Digital [CS4208 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
我只是希望能够录制一些短片，不是为了音乐或任何东西，更像是画外音。
我有 qas 搅拌机和它
在上面的屏幕截图中，我插入了耳机，这样我就不会吹破耳朵。
我制作了这个示例剪辑，它很短，但您可以确实听到我的击键和我移动双手或尝试打字。你可以点击此处收听 10 秒剪辑
那么这是否意味着我需要 USB 麦克风，或者我的音频设置有问题？我该如何解决这个问题？
答案1
看起来你确实在提高麦克风增益；这确实会使噪音更加明显。
另外，您可能有太多处于活动状态的麦克风。您应该有条不紊地检查每个捕获选项并将其静音，然后逐一取消静音，直到您确定实际正在使用的选项。