Hello Gabriel
I am thinking aloud here.
Since we have a frequency generator, it would be possible to sweep the frequencies. This in turn could be used to build a module to check inductance / capacitance / LC. This will enable RLC functionality for the DSO.
The swept frequency could also be used to do frequency characterisation curves (response curves) for audio equipment.
Regards
Jerson
ps: this pdf has some ideas to use the PC sound card.
<LINK_TEXT text=“http://icom.hsr.ch/fileadmin/user_uploa … ter_EN.pdf”>http://icom.hsr.ch/fileadmin/user_upload/icom.hsr.ch/publikationen/RLC_Meter_EN.pdf</LINK_TEXT>
And some code from another source
<LINK_TEXT text=“http://www.kerrywong.com/2010/10/16/avr … asurement/”>http://www.kerrywong.com/2010/10/16/avr-lc-meter-with-frequency-measurement/</LINK_TEXT>