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Allow more silence before transmission

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This commit is contained in:
Roman Zeyde
2019-03-08 15:10:02 +02:00
parent 02f45de4f1
commit df9cbfdf13
2 changed files with 6 additions and 3 deletions
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5
amodem/__main__.py
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@@ -124,10 +124,13 @@ def create_parser(description, interface_factory):
sender.add_argument(
'-g', '--gain', type=float, default=1.0,
help='Modulator gain (defaults to 1)')
sender.add_argument(
'--silence', type=float, default=0.0,
help='Extra silence before sending the data (in seconds)')
sender.set_defaults(
main=lambda config, args: main.send(
config, src=wrap(Compressor, args.src, args.zlib), dst=args.dst,
gain=args.gain
gain=args.gain, extra_silence=args.silence
),
calib=lambda config, args: calib.send(
config=config, dst=args.dst,

4
amodem/main.py
View File

@@ -10,12 +10,12 @@ from . import framing, common, stream, detect, sampling
log = logging.getLogger(__name__)
def send(config, src, dst, gain=1.0):
def send(config, src, dst, gain=1.0, extra_silence=0.0):
sender = _send.Sender(dst, config=config, gain=gain)
Fs = config.Fs
# pre-padding audio with silence (priming the audio sending queue)
sender.write(np.zeros(int(Fs * config.silence_start)))
sender.write(np.zeros(int(Fs * (config.silence_start + extra_silence))))
sender.start()