Hi,
Realtek ACL268
I want to know why I have got two internal mics? As far as I know, my laptop has got only one internal mic.
goto: http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PFid=27&Level=5&Conn=4&ProdID=140At the bottom of that page is a link to a datasheet where you can find a diagram of the chip. It has indeed two channels for microphones.
What a laptop manufacturer does with those two inputs is an open question. hth, --Jasper.