'Creates a new ``Recognizer`` instance, which represents a collection of speech recognition functionality.'

def __init__(self):

    self.energy_threshold = 300
    self.dynamic_energy_threshold = True
    self.dynamic_energy_adjustment_damping = 0.15
    self.dynamic_energy_ratio = 1.5
    self.pause_threshold = 0.8
    self.operation_timeout = None
    self.phrase_threshold = 0.3
    self.non_speaking_duration = 0.5
