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path: root/gr-analog/examples/fmtest.py
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* Replace scipy/pylab where numpy/pyplot is sufficientMarcus Müller2018-11-021-20/+14
| | | | | | | | | This should reduce the number of times users are prompted to install pylab || scipy when they'd actually get away with functionality fully contained in numpy and matplotlib. This only solves the obvious cases. There's some usage of `pylab.mlab` that would need more than 20s of consideration.
* python3: update non-GRC components to use python2 or python3Douglas Anderson2017-02-261-17/+20
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* gr-analog: Add safety and default for FM preemphasis filterAndy Walls2016-03-301-2/+2
| | | | | | | | | | | | | The FM preemphasis filter design now precludes the user from inducing a pole on the unit circle at z = -1.0 and z = 1.0. A pole at either of these locations makes the filter unstable and useless: feeding back "+/-inf" into an IIR filter has no good recovery. Also provide a reasonable, maximally safe default of 0.925*fs/2.0 for the high frequency corner, fh. This keeps the slope of the preemphasis filter looking reasonable sane in the whole band; at least for tau=75e-6 and fs=48000.
* gr-analog: Fix FM preemphasis filter and rework deemphasis filterAndy Walls2016-03-291-1/+2
| | | | | | | Add working filters designs for the FM preemphasis Tx filter. Rework the FM deemphasis Rx filter as it was easier to rederive the transfer function, than to determine if the one in use was correct.
* cleaning up, converting examples, etc.Tom Rondeau2013-03-171-1/+2
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* blocks: converting references to vector source/sink, null source/sink, nop, ↵Tom Rondeau2013-03-171-4/+4
| | | | copy, head, skiphead, vector_map, and annotator blocks to use gr-blocks.
* blocks: removes blocks moved to gr-blocks from gnuradio-core.Tom Rondeau2012-12-211-3/+5
| | | | Also fixes up some other missing moves.
* analog: Removing all squelch blocks from gnuradio-core.Tom Rondeau2012-11-061-0/+226
Also updating some Python blocks and examples to properly pull from filter and analog.