diff options
Diffstat (limited to 'gr-atsc/src/python/interp_short.py')
| -rwxr-xr-x | gr-atsc/src/python/interp_short.py | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/gr-atsc/src/python/interp_short.py b/gr-atsc/src/python/interp_short.py index 33172dae3..d6b2ca123 100755 --- a/gr-atsc/src/python/interp_short.py +++ b/gr-atsc/src/python/interp_short.py @@ -27,7 +27,7 @@ # -f <center of tv signal channel freq> # -g <appropriate gain for best signal / noise> # -s output shorts -@ +# # All this module does is multiply the sample rate by 3, from 6.4e6 to # 19.2e6 complex samples / sec, then lowpass filter with a cutoff of 3.2MHz # and a transition band width of .5MHz. Center of the tv channels is @@ -45,8 +45,6 @@ def graph (args): sys.stderr.write('usage: interp.py input_file\n') sys.exit (1) - sampling_freq = 6400000 - tb = tb.top_block () srcf = gr.file_source (gr.sizeof_short,infile) @@ -55,13 +53,9 @@ def graph (args): s2f2 = gr.short_to_float() src0 = gr.float_to_complex() - src1 = gr.sig_source_c (sampling_freq, gr.GR_CONST_WAVE, 1, 0) - src2 = gr.sig_source_c (sampling_freq, gr.GR_CONST_WAVE, 1, 0) - - interlv = gr.interleave(gr.sizeof_gr_complex) lp_coeffs = gr.firdes.low_pass ( 3, 19.2e6, 3.2e6, .5e6, gr.firdes.WIN_HAMMING ) - lp = gr.fir_filter_ccf ( 1, lp_coeffs ) + lp = gr.interp_fir_filter_ccf ( 3, lp_coeffs ) file = gr.file_sink(gr.sizeof_gr_complex,"/tmp/atsc_pipe_1") @@ -70,9 +64,7 @@ def graph (args): tb.connect( (s2ss, 1), s2f2) tb.connect( s2f1, (src0,0) ) tb.connect( s2f2, (src0,1) ) - tb.connect( src0, (interlv, 0) ) - tb.connect( src1, (interlv, 1) ) - tb.connect( src2, (interlv, 2) ) + tb.connect( src0, lp, file) tb.connect( interlv, lp, file ) tb.start() |