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[Discuss-gnuradio] Off-line signal processing (GR in slow motion)
From: |
Monahan-Mitchell, Tim |
Subject: |
[Discuss-gnuradio] Off-line signal processing (GR in slow motion) |
Date: |
Wed, 28 Aug 2013 22:33:53 +0000 |
I know that a source block of live IQ samples set to a certain sampling rate is
equivalent to a File source of IQ samples followed by a Throttle block set to
that same sampling rate. So far so good.
But suppose the system cannot keep up with a live IQ stream, or the equivalent
File + Throttle and do all the desired signal processing. Is there another way
to process a file of captured samples without a throttle block, yet produce
equivalent results output to another file?
Here is an example to illustrate the question:
Live example:
USRP -> AM Radio Demodulation, produces audio data -> Audio Sink
Off-line example (3 separate flowgraphs, run one at a time):
1. USRP --> File
2. File --> AM Radio Demodulation, produces audio data --> File
3. File --> Throttle @ audio rate --> Audio Sink
Note that #2 can take as long as needed to complete, no issues with loss of
data.
If so, how would I set up flowgraph #2 above?
Regards,
Tim
- [Discuss-gnuradio] Off-line signal processing (GR in slow motion),
Monahan-Mitchell, Tim <=