Extern dsp device

Extern dsp device

[Christoph Kuhr]

Hi everybody,

In my bachlor project im planing to realise an outboard fpga dsp  
device connected by gbit ethernet and driven by alsa.

The idea:
computer system with linux rt kernel, extra gbit ethernet if and for  
example rme hdsp 9652  audio if.
Outboard fpga with gbit if and DSP routines (PureD ata Engine?)

Now the fpga board is connected via gbit eth, the kernel gets it and  
inserts the gbit ethernet card into the audio signal path.
Managed with and alsa driver, cooperating with the snd-rme9652.
With a gui sending OSC to the fpga board, controlling the dsp.

Goal: zero-latency routing and dsp

Do you think this strategy might work?

Ck

Re: Extern dsp device

[Florian Faber]

On 08/14/10 23:14, Christoph Kuhr wrote:

> Goal: zero-latency routing and dsp

This is far from being zero latency. Why don't you connect the FPGA to
the ADAT ports where you can work with the audio data on a proper level.
You can still control the FPGA via Ethernet.

Besides, what would be the practical use of such a plug-in-device?


Flo
-- 
Machines can do the work, so people have time to think.
public key DA43FEF4          x-hkp://wwwkeys.eu.pgp.net

Re: Extern dsp device

[Christoph Kuhr]

Hi,

The practical use would be the processing of the IOs of the soundcard  
in live performances.

Ck



Am 15.08.2010 um 13:09 schrieb Florian Faber <faber@faberman.de>:

> On 08/14/10 23:14, Christoph Kuhr wrote:
>
>> Goal: zero-latency routing and dsp
>
> This is far from being zero latency. Why don't you connect the FPGA to
> the ADAT ports where you can work with the audio data on a proper  
> level.
> You can still control the FPGA via Ethernet.
>
> Besides, what would be the practical use of such a plug-in-device?
>
>
> Flo
> -- 
> Machines can do the work, so people have time to think.
> public key DA43FEF4          x-hkp://wwwkeys.eu.pgp.net
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