slick idea -- did you remove something too? but the way the image looks; it looks like the cap is soldered to the same smd componentwith a wire going to mic-ground. I think I get the idea; just hte picture isn't so obvious (to me).
The mic I got did have some noise, so I'm going to try this.
I'm excited to try something with my TV -- when I pute the tv, there is a noticable hum; and at high volumes, the hum is there too; so I'm hoping, with the audio board, I can adjust and adjust to get a filter of one sort or another to filter out that hum.
Where there is voice /music the hum becomes nearly unnoticable...
The teensy board/audio is got me thinking all sorts of ideas that have been bugging me...