Re: [Discuss-gnuradio] Success (kinda)

[Alan Gray]

Ok, I've made a bit more progress toward troubleshooting FM
reception with my system. John Gilmore suggested that I write
a bunch of data to file and post it online for others to take
a look at, I don't have a fast disk system yet, but I thought
I'd give it a shot anyway.

To cut a long story short, I ran the data through fm_demod1
just to see what it sounded like. The audio produced is much
clearer than when I try to read straight from the ADC, it's
almost of listenable quality though it sounds as though it has
been sped up a little (very slightly fastforwarded, it that
normal? Or possibly a result of a slower disk system?)

So it seems I have an issue with the way fm_demod1 is reading
data in. I'm currently not using any double buffering, so my
first thought is that there are "gaps" occuring in the data
I'm reading in, though it is a little odd because I'm using
the exact same method of reading in to write data to file,
maybe a little more time spent in processing?

I'm currently attempting to implement a double buffering
system, and it appears though it appears to have had little to
no effect on the sound quality as yet, so I'm a bit stumped as
to what to do next. Results thus far are encouraging enough
though, I might know better if I can get my hands on a fast
disk system. Any suggestions as to what else I could look at?

Alan