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I am not very experienced in linux and have this problem with microphone which works fine on Windows. Microphone is external one and when listening to recorded sound (both Sound Recorder and Skype Echo Test) you can hear crackling noise.

I fixed output crackling by replacing 

load-module module-hal-detect

with 

load-module module-hal-detect tsched=0

in /etc/pulse/default.pa but I have no idea how to fix input.

Hardware info:

Card: HDA ATI SB                                    
Chip: Realtek ALC272X

Thanks for help!

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1 Answer

up vote 0 down vote

I had the same issue. Try installing alsa-mixer and by using it try to mute one channel of the input (either left or right).

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Didn't work. Tried to mute both left and right channels in Capture section (not at the same time of course) but after recording voice with Sound Recorder only one channel was playing and still crackling. – Tomas Sep 26 '12 at 13:34

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