Voice record to PC through the USB V1.1

[bluelaser]

Dear all:
I want to do a USB Radio project . the function is similar to D-Link
USB radio production, but I want to add a AD to capture the audio data
and then send the audio data to the PC through the USB cable .
I am afraid that the speed of USB is insufficient to transfer to audio data.
who can give me some suggestion about this project.
or can you give me some link about this .
thank you !
bluelaser

 

[xirix]

You can use a interface with FTDI chips or National USBN96xx chips.
For voice applications must use isochronous USB mode; bulk mode work also but you may need re-buffering of data flux.

 

[Sobakava]

search uda1325 at google...

 

[FoxyRick]

Elektor did a USB analogue/digital sound project in December 2002 issue, may be of some use.

---- Begin Quote ----
The circuit described in this article
is built around a ‘stereo audio codec’
IC type PCM2902 from Texas Instruments/
Burr-Brown. Clearly, this chip
is from the same family as the
PCM2702 we used in the USB Audio-
DAC. However, it is also an upgrade
because besides the features of the
2702 (analogue stereo output, USB
interface) it also sports an analogue
stereo output and an S/PDIF input
and output. The latter even allow
digital recordings to be made to and
from the PC.
---- End Quote ----

Cheers,
FoxyRick.