Python cvsd_encode_sb Examples

Example #1

File: cvsd_audio_loopback.py Project: Darren2340/local_gnuradio

def build_graph():
    sample_rate = 8000
    scale_factor = 32000

    tb = gr.top_block()
    src = audio.source(sample_rate, "plughw:0,0")
    src_scale = blocks.multiply_const_ff(scale_factor)

    interp = filter.rational_resampler_fff(8, 1)
    f2s = blocks.float_to_short()

    enc = vocoder.cvsd_encode_sb()
    dec = vocoder.cvsd_decode_bs()

    s2f = blocks.short_to_float()
    decim = filter.rational_resampler_fff(1, 8)

    sink_scale = blocks.multiply_const_ff(1.0/scale_factor)
    sink = audio.sink(sample_rate, "plughw:0,0")

    tb.connect(src, src_scale, interp, f2s, enc)
    tb.connect(enc, dec, s2f, decim, sink_scale, sink)

    if 0: # debug
        tb.conect(src, blocks.file_sink(gr.sizeof_float, "source.dat"))
        tb.conect(src_scale, blocks.file_sink(gr.sizeof_float, "src_scale.dat"))
        tb.conect(interp, blocks.file_sink(gr.sizeof_float, "interp.dat"))
        tb.conect(f2s, blocks.file_sink(gr.sizeof_short, "f2s.dat"))
        tb.conect(enc, blocks.file_sink(gr.sizeof_char,  "enc.dat"))
        tb.conect(dec, blocks.file_sink(gr.sizeof_short, "dec.dat"))
        tb.conect(s2f, blocks.file_sink(gr.sizeof_float, "s2f.dat"))
        tb.conect(decim, blocks.file_sink(gr.sizeof_float, "decim.dat"))
        tb.conect(sink_scale, blocks.file_sink(gr.sizeof_float, "sink_scale.dat"))

    return tb

Example #2

def build_graph():
    sample_rate = 8000
    scale_factor = 32000

    tb = gr.top_block()
    src = audio.source(sample_rate, "plughw:0,0")
    src_scale = gr.multiply_const_ff(scale_factor)

    interp = blks2.rational_resampler_fff(8, 1)
    f2s = gr.float_to_short()

    enc = vocoder.cvsd_encode_sb()
    dec = vocoder.cvsd_decode_bs()

    s2f = gr.short_to_float()
    decim = blks2.rational_resampler_fff(1, 8)

    sink_scale = gr.multiply_const_ff(1.0 / scale_factor)
    sink = audio.sink(sample_rate, "plughw:0,0")

    tb.connect(src, src_scale, interp, f2s, enc)
    tb.connect(enc, dec, s2f, decim, sink_scale, sink)

    if 0:  # debug
        tb.conect(src, gr.file_sink(gr.sizeof_float, "source.dat"))
        tb.conect(src_scale, gr.file_sink(gr.sizeof_float, "src_scale.dat"))
        tb.conect(interp, gr.file_sink(gr.sizeof_float, "interp.dat"))
        tb.conect(f2s, gr.file_sink(gr.sizeof_short, "f2s.dat"))
        tb.conect(enc, gr.file_sink(gr.sizeof_char, "enc.dat"))
        tb.conect(dec, gr.file_sink(gr.sizeof_short, "dec.dat"))
        tb.conect(s2f, gr.file_sink(gr.sizeof_float, "s2f.dat"))
        tb.conect(decim, gr.file_sink(gr.sizeof_float, "decim.dat"))
        tb.conect(sink_scale, gr.file_sink(gr.sizeof_float, "sink_scale.dat"))

    return tb

Example #3

File: qa_cvsd_vocoder.py Project: danbar/gnuradio

 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()

Example #4

 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()