diff options
Diffstat (limited to 'gr-vocoder/python/vocoder/cvsd.py')
| -rw-r--r-- | gr-vocoder/python/vocoder/cvsd.py | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/gr-vocoder/python/vocoder/cvsd.py b/gr-vocoder/python/vocoder/cvsd.py index b6ce822935..00a24df25f 100644 --- a/gr-vocoder/python/vocoder/cvsd.py +++ b/gr-vocoder/python/vocoder/cvsd.py @@ -20,8 +20,11 @@ # Boston, MA 02110-1301, USA. # +from __future__ import division +from __future__ import unicode_literals from gnuradio import gr, filter, blocks -import vocoder_swig +from . import vocoder_swig + class cvsd_encode_fb(gr.hier_block2): ''' @@ -39,9 +42,9 @@ class cvsd_encode_fb(gr.hier_block2): from 1 to 8. A rate of 8k with a resampling rate of 8 provides a good quality signal. ''' - gr.hier_block2.__init__(self, "cvsd_encode", - gr.io_signature(1, 1, gr.sizeof_float), # Input signature - gr.io_signature(1, 1, gr.sizeof_char)) # Output signature + gr.hier_block2.__init__(self, "cvsd_encode", + gr.io_signature(1, 1, gr.sizeof_float), # Input signature + gr.io_signature(1, 1, gr.sizeof_char)) # Output signature scale_factor = 32000.0 self.interp = resample @@ -70,9 +73,9 @@ class cvsd_decode_bf(gr.hier_block2): When using the CVSD vocoder, appropriate sampling rates are from 8k to 64k with resampling rates from 1 to 8. A rate of 8k with a resampling rate of 8 provides a good quality signal. ''' - gr.hier_block2.__init__(self, "cvsd_decode", - gr.io_signature(1, 1, gr.sizeof_char), # Input signature - gr.io_signature(1, 1, gr.sizeof_float)) # Output signature + gr.hier_block2.__init__(self, "cvsd_decode", + gr.io_signature(1, 1, gr.sizeof_char), # Input signature + gr.io_signature(1, 1, gr.sizeof_float)) # Output signature scale_factor = 32000.0 self.decim = resample @@ -81,6 +84,6 @@ class cvsd_decode_bf(gr.hier_block2): s2f = blocks.short_to_float() taps = filter.firdes.low_pass(1, 1, bw, 2*bw) decim = filter.fir_filter_fff(self.decim, taps) - sink_scale = blocks.multiply_const_ff(1.0/scale_factor) + sink_scale = blocks.multiply_const_ff(1.0 / scale_factor) self.connect(self, dec, s2f, decim, sink_scale, self) |