You asked about implementing the USB audio stack on the PIC.

But it seems like every reply has answered some other question like=20
"where can I find a non-PIC audio interface for my PC?". This seems like=20
an odd reply from the PIC list!

It sounds like a valid and fun idea.  It seems obvious that you'd want=20
to start with "simulated" data to get things working before throwing the=20
ADC in the mix. Who knows? maybe your "audio" input will be=20
accelerometer data, not Audio Line In.   Or maybe it will be the output=20
of some not-yet-imagined digital instrument.

It can definitely be done, here is a long thread at Microchip with=20
posters who successfully implemented input and output devices with the=20
PIC hardware.

   http://www.microchip.com/forums/tm.aspx?high=3D&m=3D231496&mpage=3D2#274=
833

And another USB related thread.

   http://www.microchip.com/forums/tm.aspx?m=3D123533

These were close to the top hits in Google for "PIC usb audio"



Joe



On 2011-02-04 08:20, Jacopo Monegato wrote:
> Hi there!
> I wonder if the tag is the most appropriate,
> as a student (and musician) I often wonder about making my own equipment,=
 and i have been thinking for some time to build, or just to design, my own=
 audio interface.
> Let's forget about all the analog part for a second. After all that stuff=
 the signal would be converted into digital, then written into a pic and th=
en sent through the UART to the pc, using usb protocol. A teacher of mine s=
uggested to buy a 5$ 5.1 audio interface from the internet, then change the=
 ADs, but i wanted to do the most i could on my own.. i mean, it can't be T=
HIS HARD to program a pic to encode the data from the AD to match the USB A=
UDIO 2.0 driver requirements..
>
> My problem is here: i tried to search over the net for the driver specifi=
cation but i'm not sure to have found it out, could anyone push me in the r=
ight direction?
>
> Jacopo Monegato
>   		 	   	=09
--=20
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