Never mind, ignore that. Still seems to be working strangely.
madengr wrote
> So if I swap positions of the "throttle" and "vector to stream", and
> setting throttle for rate of 30 and 1024 items, then it works fine. It
> seems the throttle has to be immediately after the file source, otherwise
So if I swap positions of the "throttle" and "vector to stream", and setting
throttle for rate of 30 and 1024 items, then it works fine. It seems the
throttle has to be immediately after the file source, otherwise it gets
fouled up.
Lou
madengr wrote
> Try this:
>
> https://www.dropbox.com/s/
If you are working off a file source, then you should be able to use the
"head" block to limit the number of samples read from the file. For
example, if you want to average 32 spectrums of length 1024, then you need
32*1024 samples in the "head".
Sorry, no idea how to change the default time plot
But the throttle should roughly slow it down to a real-time rate. The top
half of my grc file updates about 1 spectrum/second via a throttle, and
writes those vectors to disk. If I read back the the file also through a
throttle, it should have about the same rate, but it's much slower. Note to
d
Thanks a lot Lou and Marcus,
Lou -> I tried your spectrum.grc file with my data file instead of your
cosine + gaussian noise and it works. The "integrate" block is really the
one I was looking for!
Now ideally I'd like to save only ONE spectrum instead of "animations" How
to achieve this (e.g. I
Yes, but I have a throttle after that file source, so it should be updating
about 1 vector/second (each vector is 1024 samples). It's happening about
1/8 that speed, so something does not seem quite right.
Lou
Marcus D. Leech wrote
> Files don't have any inherent sample-rate. Regardless of what
This cannot be stressed enough. What GNU Radio processes is nothing but series
of numbers. Just like these numbers don't have a physical unit (lest you
interpret them as physically significant), the don't have a rate.
Furthermore, and this also is something very often misunderstood, throttle
doe
On 05/30/2016 09:19 PM, madengr wrote:
Try this:
https://www.dropbox.com/s/7xsg4arx5h3gvah/spectrum.grc?dl=0
The integrate with decimation is what you want. Starting at 32 ksps with a
1024 length FFT length yields 31.25 vector/sec. Then an integrate with
decimation by 32 averages down to 0.98
Try this:
https://www.dropbox.com/s/7xsg4arx5h3gvah/spectrum.grc?dl=0
The integrate with decimation is what you want. Starting at 32 ksps with a
1024 length FFT length yields 31.25 vector/sec. Then an integrate with
decimation by 32 averages down to 0.98 vector/sec.
However when I try reading
Dear All,
I'm new to Gnu Radio. I looked carefully to the doc and tutorials but could
not find any simple answer to my problem.
I have a radio signal from which I'm able to visualize the FFT in GNU Radio
Companion.
Now I would like to save the FFT (more exactly the magnitude squared, or
the spectr
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