有没有使用python发送和接收调制信号的方法？

import pyaudio
import numpy as np

# 设置参数
duration = 5  # 持续时间（秒）
frequency = 440  # 频率（Hz）

# 生成调制信号
t = np.linspace(0, duration, int(duration * 44100), False)
signal = np.sin(frequency * 2 * np.pi * t)

# 初始化PyAudio
p = pyaudio.PyAudio()

# 打开音频流
stream = p.open(format=pyaudio.paFloat32,
                channels=1,
                rate=44100,
                output=True)

# 发送调制信号
stream.write(signal.astype(np.float32).tobytes())

# 停止音频流
stream.stop_stream()
stream.close()

# 终止PyAudio
p.terminate()