On 2014-02-20 15:34, Rafael Vega wrote:

Hi, has anyone tried a usb sound card with the BBB? I want to connect my
guitar to it and run some PD patches so something with low latency would
be niiice :)

I have a Behringer UCA-202 attached to a BBB running Ubuntu. It's running a csound score that implements a variable delay line. Audio is 48kHz stereo 16bit via ALSA, not sure what the latency is exactly but it's small.

Also wondering how hard it would be to directly connect some ADCs and
DACs. Has anyone tried?

The PRUSS is very interesting for high speed hardware interfacing, but it seems difficult to integrate with linux, you would need to write kernel drivers to work with ALSA or JACK. Connecting DACs and ADCs using I2C or SPI could work but how to synchronize with the audio system?


Martin