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Re: [Discuss-gnuradio] hdtv hacking

From: Charles Swiger
Subject: Re: [Discuss-gnuradio] hdtv hacking
Date: Sat, 08 Apr 2006 10:13:56 -0400

On Fri, 2006-04-07 at 18:20 -0700, Eric Blossom wrote:
> On Fri, Apr 07, 2006 at 06:49:07PM -0400, Charles Swiger wrote:

> > The latest benchmark I have for the 0.9 atsc is 10 minutes of data
> > takes about 14 hours to decode on an Athlon 3200+ (2200 MHz real),
> > and over HALF that time is spent resampling and up-mixing the data
> > to emulate an mc4020 to atsc_rx.
> Did you do the 5:2 resampling using the rational_resampler, or did you
> interpolate then decimate in two steps?

currently it's using the rational_resampler on one machine, then pipes
and sockets to atsc_rx on another to parallelize things a bit. Has been
running all night ;)  Resampler on an Athlon 3200+ at 99% cpu and
atsc_rx on a 1.4Ghz Pentium-M running about 70%.

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