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_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
src_scale = gr.multiply_const_ff(scale_factor)
taps = gr.firdes.low_pass(self.interp, self.interp, bw, 2*bw)
interp = gr.interp_fir_filter_fff(self.interp, taps)
f2s = gr.float_to_short()
enc = vocoder_swig.cvsd_encode_sb()
self.connect(self, src_scale, interp, f2s, enc, 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()
