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Re: [Discuss-gnuradio] Progress on Sheeva -- actually got a half-way fun

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] Progress on Sheeva -- actually got a half-way functional flow-graph working
Date: Fri, 09 Apr 2010 10:39:45 -0400
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20100330 Fedora/3.0.4-1.fc12 Thunderbird/3.0.4

> On 04/08/2010 10:30 PM, Marcus D. Leech wrote:
>> http://www.sbrac.org/files/audioSIDnoGUI.py
>> http://www.sbrac.org/files/audioSIDnoGUI.grc
>> It can only handle two channels, and it takes 78% of the CPU while doing
>> it, but it does work!
> How about calculating a $ per sample number?
> Philip
Hmmm, let's see.

The Sheeva Plug was $99.00
The USB Audio subsystem I had to buy for it was $79.00

So, $178.00  divided by 96000 samples/sec

That's 0.2cents/sample/sec

Let's see how that scales using a USRP1 and a "mildly pimped out" PC

USRP1 is $700
PC is probably another $700

So, $1400.00 divided by 8megasamples/sec

That's roughly 0.02cents/sample/sec

The USRP1 + PC is roughly an order-of-magnitude better value, when
looked at in that way.

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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