[lug] Mailing lists/forums for embedded?

stimits at comcast.net stimits at comcast.net
Sat Aug 17 16:00:07 MDT 2013

I've not worked with FPGAs before. So I'm wondering about a comparison between using DSP related chips which are typical on the SBCs, versus FPGA? For audio processing, I essentially need to do continuous fourier analysis, and some filtering (all audio range). This has to occur simultaneously to some USB and network trickery. The programming also has to change often...so I'm wondering if the FPGA is too specialized?

----- Original Message -----
From: Zan Lynx 
To: Boulder (Colorado) Linux Users Group -- General Mailing List 
Sent: Wed, 14 Aug 2013 20:58:34 -0000 (UTC)
Subject: Re: [lug] Mailing lists/forums for embedded?

On Tue, Aug 13, 2013 at 10:18 PM,  <stimits at comcast.net> wrote:

I'm looking to do some serious audio crunching, along with custom USB modifications. Lots of kernel module work, plus user space audio processing. A separate project on the same platform if I can get two ethernet ports and bridge (more kernel space stuff, useful for testing). Latency is a concern, I'm looking at RTlinux on dual core or quad core.

You may also want to consider an FPGA board. Some of these come with an ARM CPU included. If you know your logic design these can be great for audio because efficiency is maximized, latency is minimal and power use is also minimal. Bits go in. Bits get munged. Bits come out. It is like a DSP but even better because it is custom-designed for your algorithm.

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