recognizer_plugin.py 文件源码

def __init__(self, rt):
        super().__init__(rt)
        config = rt.config['frontends']['speech']['recognizers']
        self.listener_config = config

        self.chunk_size = config['chunk_size']
        self.format = pyaudio.paInt16
        self.sample_width = pyaudio.get_sample_size(self.format)
        self.sample_rate = config['sample_rate']
        self.channels = config['channels']

        self.p = pyaudio.PyAudio()
        self.stream = self.p.open(format=self.format, channels=self.channels,
                                  rate=self.sample_rate, input=True,
                                  frames_per_buffer=self.chunk_size)

        self.buffer_sec = config['wake_word_length']
        self.talking_volume_ratio = config['talking_volume_ratio']
        self.required_integral = config['required_noise_integral']
        self.max_di_dt = config['max_di_dt']
        self.noise_max_out_sec = config['noise_max_out_sec']
        self.sec_between_ww_checks = config['sec_between_ww_checks']
        self.recording_timeout = config['recording_timeout']
        self.energy_weight = 1.0 - pow(1.0 - config['ambient_adjust_speed'],
                                       self.chunk_size / self.sample_rate)

        # For convenience
        self.chunk_sec = self.chunk_size / self.sample_rate

        self.av_energy = None
        self.integral = 0
        self.noise_level = 0
        self._intercept = None