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Thread: Internal Microphone Scratchy under Linux

  1. #1

    Default Internal Microphone Scratchy under Linux

    I've been trying to use Skype for Linux on my Asus laptop. The sound from the microphone is scratchy and almost unreadable. I can dual boot Windows 7 on the same computer and the microphone is crystal clear using Skype for Windows, so it is not a hardware issue. I've fooled a bit with Pavucontrol, and turned the microphone volume down to various levels under 50% and it is still scratchy. Is there anything else I can do?

    Thanks.

  2. #2
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    Default Re: Internal Microphone Scratchy under Linux

    I'm not a skype user, but a quick search online reveals numerous accounts of static/scratchy noise with respect to using skype and pulseaudio.

    Some examples...
    https://forums.linuxmint.com/viewtop...33909#p1242399
    https://winaero.com/blog/fix-broken-...ype-linux-8-x/
    https://answers.microsoft.com/en-us/...b-bee723d2493a

    A common workaround mentioned is to include the PULSE_LATENCY_MSEC environment variable like these examples...
    Code:
    env PULSE_LATENCY_MSEC=30 skypeforlinux
    Code:
    env PULSE_LATENCY_MSEC=30 skype %U

    This archlinux wiki page may also be useful to you...

    Static noise in microphone recording

    If we are getting static noise in Skype, gnome-sound-recorder, arecord, etc.'s recordings, then the sound card sample rate is incorrect. That is why there is static noise in Linux microphone recordings. To fix this, we need to set the sampling rate in /etc/pulse/daemon.conf for the sound hardware.
    In addition to the guide below, since PulseAudio 11 it is possible to set avoid-resampling = yes in daemon.conf.

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