def send_text_message(self, msg):
bmsg = '11010001' + fsk.encode_ascii(msg)
byte = ''
bytearray = []
fs = self.RATE
carrier = self.CARRIER
Bd = self.BAUD
for k, bit in enumerate(bmsg, start=1):
if k % 8 == 0:
byte += bit
bytearray.append(byte)
byte = ''
else:
byte += bit
sys.stdout.write('### BAUD {} @ CARRIER {}Hz ###\n'.format(str(Bd), str(carrier)))
sys.stdout.flush()
s = fsk.set_frequency_header(np.zeros(0),Bd)
sd.play(s, fs)
status = sd.wait()
for byte in bytearray:
s = fsk.generate_tones(byte, fs, Bd, carrier)
tone = s * (2**15 - 1) / np.max(np.abs(s))
tone = tone.astype(np.int16)
self.SIGNAL = tone
sd.play(tone, fs)
status = sd.wait()
s = fsk.set_frequency_trailer(np.zeros(0),Bd)
sd.play(s, fs)
status = sd.wait()
def message_to_wav(self, msg):
fs = self.RATE
carrier = self.CARRIER
Bd = self.BAUD
bmsg = '11010001' + fsk.encode_ascii(msg)
sys.stdout.write(f'### BAUD {Bd} @ CARRIER {carrier}Hz ###\n')
sys.stdout.flush()
s = fsk.generate_tones(bmsg, fs, Bd, carrier)
s = fsk.sanduiche_encoding(s, Bd)
tone = s * (2**15 - 1) / np.max(np.abs(s))
tone = tone.astype(np.int16)
self.SIGNAL = tone
def send_generic_message(self, msg, debug=False):
fs = self.RATE
carrier = self.CARRIER
Bd = self.BAUD
bmsg = '11010001' + fsk.encode_ascii(msg)
if debug: print(bmsg)
sys.stdout.write(f'### BAUD {Bd} @ CARRIER {carrier}Hz ###\n')
sys.stdout.flush()
s = fsk.generate_tones(bmsg, fs, Bd, carrier)
s = fsk.sanduiche_encoding(s, Bd)
tone = s * (2**15 - 1) / np.max(np.abs(s))
tone = tone.astype(np.int16)
self.SIGNAL = tone
sd.play(tone, fs)
status = sd.wait()
def send_generic_message(self, msg):
fs = self.RATE
carrier = self.CARRIER
Bd = self.BAUD
bmsg = '1101000111010001' + fsk.encode_ascii(msg)
print(bmsg)
sys.stdout.write('### BAUD {} CARRIER {}Hz ###\n'.format(
str(Bd), str(carrier)))
sys.stdout.flush()
s = fsk.generate_tones(bmsg, fs, Bd, carrier)
s = fsk.sanduiche_encoding(s)
tone = s * (2**15 - 1) / np.max(np.abs(s))
tone = tone.astype(np.int16)
self.SIGNAL = tone
sd.play(tone, fs)
status = sd.wait()