import numpy as np
import sounddevice as sd


def beep(duration=700, freq=640):
    # 生成蜂鸣声的时间序列
    t = np.linspace(0, duration / 1000, int(44100 * duration / 1000), False)
    signal = 0.5 * np.sin(2 * np.pi * freq * t)
    # 播放蜂鸣声
    sd.play(signal, samplerate=44100)
    sd.wait()


class SpeakServer:

    def start(self):
        pass

    @staticmethod
    def add_speak(data):
        pass

    @classmethod
    def check_list(cls):
        return True

    @classmethod
    def wait_4_speak(cls):
        pass

    @staticmethod
    def speed_control(rate):
        pass

    @staticmethod
    def volume_control(volume):
        pass

    @classmethod
    def wait(cls):
        return

    @classmethod
    def pause(cls):
        return

    @classmethod
    def resume(cls):
        return

    @classmethod
    def stop(cls):
        return