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ns_kws_alexa.py
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ns_kws_alexa.py
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"""
Hands-free Voice Assistant with Snowboy and Alexa Voice Service. The wake-up keyword is "alexa"
Requirement:
sudo apt-get install python-numpy
pip install webrtc-audio-processing voice-engine avs
"""
import signal
import time
import logging
from voice_engine.source import Source
from voice_engine.channel_picker import ChannelPicker
from voice_engine.kws import KWS
from voice_engine.ns import NS
from avs.alexa import Alexa
def main():
logging.basicConfig(level=logging.DEBUG)
src = Source(rate=16000)
ns = NS(rate=16000, channels=1)
kws = KWS(model='alexa')
alexa = Alexa()
src.pipeline(ns, kws, alexa)
def on_detected(keyword):
logging.info('detected {}'.format(keyword))
alexa.listen()
kws.set_callback(on_detected)
is_quit = []
def signal_handler(signal, frame):
is_quit.append(True)
print('Quit')
signal.signal(signal.SIGINT, signal_handler)
src.pipeline_start()
while not is_quit:
try:
time.sleep(1)
except KeyboardInterrupt:
break
src.pipeline_stop()
if __name__ == '__main__':
main()