Template:FAQ/Questions/when poor microphone recording

When poor microphone recording quality occurs, what is wrong?
The +20 dB mic boost is not on and not accessible using aumix (OSS).

That feature is accessible through aumix using the -i &quot;input gain&quot; feature. -i 100 will turn on boost; -i 0 will turn it off. To set the gain on MIC or LINEIN sources, use the MIC or LINEIN specific gain options in aumix.

Other programs that appear related to our gumstix platform are:

ac97_codec.h / .c pax-ac97.h / .c pxa-audio.h / .c