snowboyで遊んでみる

やりたいこと

Hey , SiriやOK, GoogleのようなHotWordを変更して、音声認識を行いたい

snowboy

• 概要 ： Snowboy Hotword Detection - YouTube

• Git : snowboy/demo.py at master · Kitt-AI/snowboy · GitHub

• Document : Snowboy, a Customizable Hotword Detection Engine — Snowboy 1.0.0 documentation

install & demo

ubuntu16.04でも動いた♪

1. install -> https://s3-us-west-2.amazonaws.com/snowboy/snowboy-releases/ubuntu1404-x86_64-1.1.1.tar.bz2

2. sudo apt-get install python-pyaudio python3-pyaudio sox

3. pip install pyaudio

4. Snowboy Hotword DetectionのCreate Hotwordでtest.pmdlを作成

5. python demo.py test.pmdl

demo.py

import snowboydecoder
import sys
import signal

interrupted = False

def signal_handler(signal, frame):
    global interrupted
    interrupted = True

def interrupt_callback():
    global interrupted
    return interrupted

if len(sys.argv) == 1:
    print("Error: need to specify model name")
    print("Usage: python demo.py your.model")
    sys.exit(-1)

model = sys.argv[1]

signal.signal(signal.SIGINT, signal_handler)

detector = snowboydecoder.HotwordDetector(model, sensitivity=0.5)
print('Listening... Press Ctrl+C to exit')

detector.start(detected_callback=snowboydecoder.ding_callback,
               interrupt_check=interrupt_callback,
               sleep_time=0.03)

detector.terminate()

このdetected_callback=snowboydecoder.ding_callbackに自作関数を入れる。

そうすると、HotWordが入った時に関数が呼ばれる。

注意

Do not append () to your callback function: the correct way is to assign detected_callback=your_func instead of detected_callback=your_func(). However, what if you have parameters to assign in your callback functions? Use a lambda function! So your callback would look like: callback=lambda: callback_function(parameters).

参考

Snowboy Hotword DetectionをRaspberry Piで動かす - Qiita