20 Feb
2014
20 Feb
'14
9:34 p.m.
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 :)
Also wondering how hard it would be to directly connect some ADCs and DACs.
Has anyone tried?
--
Rafael Vega
email.rafa(a)gmail.com
20 Feb
20 Feb
10:11 p.m.
Hi,
On 20.02.2014 21:34, Rafael Vega wrote:
Also wondering how hard it would be to directly connect some ADCs and
DACs.
It's probably not too hard. The BBB's AM335x has 2
"Multichannel Audio
Serial Ports" each providing serial audio I/O ports which can be used in
I2S, SPDIF, AES-3 and other formats. I don't how well this is supported
under Linux, but in theory (AFAICS) the Cortex could support 4 x stereo
in & 4 x stereo out.
Search the web for "bbb" and "i2s".
HTH,
Jacob
11:11 p.m.
On 02/20/2014 09:34 PM, 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 :)
Also wondering how hard it would be to directly connect some ADCs and DACs.
Has anyone tried?
Hi Rafael,
I've owned a BBB for a short while but sold it mainly because I couldn't
get any USB interface to work with it. I think this was related to what
kind of power adapter was used. Could well be I overlooked something but
since I didn't really dig the BBB I didn't investigate any further.
Best,
Jeremy
11:15 p.m.
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
21 Feb
21 Feb
4:59 p.m.
Thanks Martin! I will pick up one of those Beringers :)
On Thu, Feb 20, 2014 at 5:14 PM, Martin Peach <martin.peach(a)sympatico.ca>wrote;wrote:
On 2014-02-20 15:34, Rafael Vega wrote:
--
Rafael Vega
email.rafa(a)gmail.com
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
9:54 p.m.
On 02/20/2014 09:34 PM, Rafael Vega wrote:
Also wondering how hard it would be to directly
connect some ADCs and DACs.
Has anyone tried?
Hi Rafael,
There are so-called capes available for BeagleBoard products like the
BBB. Audio capes are available too:
http://elinux.org/CircuitCo:Audio_Cape_RevB
Best,
Jeremy
4350
days inactive
4351
days old
linux-audio-user@lists.linuxaudio.org
5 comments
4 participants
participants (4)
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Jacob -
Jeremy Jongepier -
Martin Peach -
Rafael Vega