def __init__(self, resample=8, bw=0.5):
'''
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
scale_factor = 32000.0
self.decim = resample
dec = vocoder_swig.cvsd_decode_bs()
s2f = gr.short_to_float()
taps = gr.firdes.low_pass(1, 1, bw, 2*bw)
decim = gr.fir_filter_fff(self.decim, taps)
sink_scale = gr.multiply_const_ff(1.0/scale_factor)
self.connect(self, dec, s2f, decim, sink_scale, self)
def test001_module_load (self):
raw_enc = vocoder.cvsd_encode_sb()
raw_dec = vocoder.cvsd_decode_bs()
hb_enc = cvsd.cvsd_encode_fb()
hb_dec = cvsd.cvsd_decode_bf()
def test001_module_load(self):
raw_enc = vocoder.cvsd_encode_sb()
raw_dec = vocoder.cvsd_decode_bs()
hb_enc = cvsd.cvsd_encode_fb()
hb_dec = cvsd.cvsd_decode_bf()
