Hi there! I wonder if the tag is the most appropriate, as a student (and musician) I often wonder about making my own equipment, a= nd i have been thinking for some time to build, or just to design, my own a= udio interface. Let's forget about all the analog part for a second. After all that stuff t= he signal would be converted into digital, then written into a pic and then= sent through the UART to the pc, using usb protocol. A teacher of mine sug= gested to buy a 5$ 5.1 audio interface from the internet, then change the A= Ds, but i wanted to do the most i could on my own.. i mean, it can't be THI= S HARD to program a pic to encode the data from the AD to match the USB AUD= IO 2.0 driver requirements.. My problem is here: i tried to search over the net for the driver specifica= tion but i'm not sure to have found it out, could anyone push me in the rig= ht direction? Jacopo Monegato =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .