From: Tom Rondeau Date: Mon, 6 Dec 2010 18:52:55 +0000 (-0500) Subject: Modifying blsk2 wrapper for PFB arbitrary resampler to allow the user to just specify... X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=6246efbefcdb6807daa7c245ebe7a975ab0ce7d4;p=debian%2Fgnuradio Modifying blsk2 wrapper for PFB arbitrary resampler to allow the user to just specify the requested resampling rate without providing their own filter taps. Taps are then generated inside hier_block2 to cover full bandwidth of input signal. Optional attenuation parameter may be provided. --- diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/pfb_arb_resampler.py b/gnuradio-core/src/python/gnuradio/blks2impl/pfb_arb_resampler.py index e40d9636..cd9289fa 100644 --- a/gnuradio-core/src/python/gnuradio/blks2impl/pfb_arb_resampler.py +++ b/gnuradio-core/src/python/gnuradio/blks2impl/pfb_arb_resampler.py @@ -31,15 +31,22 @@ class pfb_arb_resampler_ccf(gr.hier_block2): streams. This block is provided to be consistent with the interface to the other PFB block. ''' - def __init__(self, rate, taps, flt_size=32): + def __init__(self, rate, taps=None, flt_size=32, atten=80): gr.hier_block2.__init__(self, "pfb_arb_resampler_ccf", gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature gr.io_signature(1, 1, gr.sizeof_gr_complex)) # Output signature self._rate = rate - self._taps = taps self._size = flt_size + if taps is not None: + self._taps = taps + else: + # Create a filter that covers the full bandwidth of the input signal + bw = 0.5 + tb = 0.1 + self._taps = gr.firdes.low_pass_2(self._size, self._size, bw, tb, atten) + self.pfb = gr.pfb_arb_resampler_ccf(self._rate, self._taps, self._size) self.connect(self, self.pfb)