You’re probably here because you’re suffering from an issue that your microphone’s volume is too loud. You might have thought that the volume of your internal microphone is at an excessive level and again you might have tried decreasing the volume, but finally you find it quite tedious. Well, you’re not wrong about the volume level but in point of fact, the whole problem is because of the “microphone boost”. You must set the boost level to zero. What you need to do is to change the maximum base level to the ideal point – by cancelling out the “microphone boost”.
Ideal level of your internal mic seems to be around this point. Well, You want to be more precise, so…
Go and open up the AlsaMixer configuration GUI on the terminal. Press F4 for input devices. Set the capture to 100 and others to 0. Note that whenever you try to increase the volume of the internal mic. using system settings, the “Internal Mic Boost” -the bar which stands on the right-most side of the GUI- happened to increase as well. That’s the actual problem, per se.
You can confirm the effects in the Volume Control app of Ubuntu.
What we have done so far was only a just-in-case. Now we get to the main soluion.
Now open up the terminal again and issue this command:
$ cd /usr/share/pulseaudio/alsa-mixer/pathsThere are two related configuration files inside this directory: “analog-input-internal-mic.conf” and “analog-input-internal-mic-always.conf“. We’re supposed to modify the both. So carry out the steps below for both of them.
$ sudo nano analog-input-internal-mic.confIt’s gonna prompt your user-password, so type it in and hit enter.
As you see animated gif above, scroll down to the header [Element Capture] and [Element Internal Mic Boost], and then change the volume to 100 and 0, respectively. Then hit CTRL+O and CTRL+X, respectively.
Perform this last step for the file “analog-input-internal-mic-always.conf“, as well. It will avoid the automatically chance of the microphone’s input volume.
Furkan Ünlütürk 