diff options
Diffstat (limited to 'gnuradio-examples/python/apps/hf_radio/ssbagc.py')
| -rw-r--r-- | gnuradio-examples/python/apps/hf_radio/ssbagc.py | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/gnuradio-examples/python/apps/hf_radio/ssbagc.py b/gnuradio-examples/python/apps/hf_radio/ssbagc.py deleted file mode 100644 index fdf40bc6b..000000000 --- a/gnuradio-examples/python/apps/hf_radio/ssbagc.py +++ /dev/null @@ -1,48 +0,0 @@ -# post detection agc processing -# -# Imagine that the usual gnuradio copyright stuff is right here. -# -# This agc strategy is copied more or less verbatim from -# weaver_isb_am1_usrp3.py by cswiger. -# -# Thanks. -# -# Then modified in a variety of ways. -# -# There doesn't appear to be a way to hook multiple blocks to the -# input port when building a hier block like this. Thus the -# split below. -# -# Basic operation. -# Power is estimated by squaring the input. -# Low pass filter using a 1 pole iir. -# The time constant can be tweaked by changing the taps. -# Currently there is no implementation to change this while operating -# a potentially useful addition. -# The log block turns this into dB -# gain adjusts the agc authority. -# -# M. Revnell 2006-Jan - -from gnuradio import gr, gru - -class agc( gr.hier_block ): - def __init__( self, fg ): - self.split = gr.multiply_const_ff( 1 ) - self.sqr = gr.multiply_ff( ) - self.int0 = gr.iir_filter_ffd( [.004, 0], [0, .999] ) - self.offs = gr.add_const_ff( -30 ) - self.gain = gr.multiply_const_ff( 70 ) - self.log = gr.nlog10_ff( 10, 1 ) - self.agc = gr.divide_ff( ) - - fg.connect( self.split, ( self.agc, 0 ) ) - fg.connect( self.split, ( self.sqr, 0 ) ) - fg.connect( self.split, ( self.sqr, 1 ) ) - fg.connect( self.sqr, self.int0 ) - fg.connect( self.int0, self.log ) - fg.connect( self.log, self.offs ) - fg.connect( self.offs, self.gain ) - fg.connect( self.gain, ( self.agc, 1 ) ) - - gr.hier_block.__init__( self, fg, self.split, self.agc ) |