Python'；音响设备'；库-禁用音频输出

此脚本检查声级并在终端上可视化。我唯一的问题是脚本将流输出到指定的音频输出（HDMI或耳机插孔）。麦克风打开时，它可以创建反馈。我可以把音量调低，但我不知道是否可以禁用音频输出

import sounddevice as sd
from numpy import linalg as LA
import numpy as np

duration = 10  # seconds

def print_sound(indata, outdata, frames, time, status):
    volume_norm = np.linalg.norm(indata)*10
    print (int(volume_norm))

with sd.Stream(callback=print_sound):
    sd.sleep(duration * 1000)