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[Discuss-gnuradio] gr.firdes_hilbert () usage
From: |
cswiger |
Subject: |
[Discuss-gnuradio] gr.firdes_hilbert () usage |
Date: |
Wed, 24 Nov 2004 11:15:33 -0500 (EST) |
Gang - how is the hilbert filter taps used? Either I don't understand
hilbert or how to use gr.firdes_hilbert.
If I feed a complex signal directly to output plot I get the expected
signal for positive and negative freq. However if I feed it thru a
hilbert filter first there's a phase shift but there doesn't seem to be
any difference for positive or negative freq. Or maybe I'm not looking
at them right.
signal = 10e3 ; set positive or negative
sample_rate = 1e6
cfir_decimation = 1
src = gr.sig_source_c (sample_rate,gr.GR_SIN_WAVE,signal,1.0,0)
hilbert_coeffs = \
gr.firdes_hilbert (37, gr.firdes.WIN_HAMMING)
hilbert = gr.fir_filter_ccf (
cfir_decimation,
hilbert_coeffs )
dst - gr.file_sink (gr.sizeof_gr_complex, "hilbert_2_pos.dat")
fg.connect (src,hilbert)
fg.connect (hilbert,dst)
--Chuck
- [Discuss-gnuradio] gr.firdes_hilbert () usage,
cswiger <=
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, Matt Ettus, 2004/11/24
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, cswiger, 2004/11/24
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, Dan Gisselquist, 2004/11/24
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, cswiger, 2004/11/24
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, Matt Ettus, 2004/11/24
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, Dan Gisselquist, 2004/11/24
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, Matt Ettus, 2004/11/24
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, Eric Blossom, 2004/11/25
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, Chuck Swiger, 2004/11/26
- Re: [Discuss-gnuradio] gr.firdes_hilbert () usage, Matt Ettus, 2004/11/26