在 Python 中测量扬声器音量？

如何解决在 Python 中测量扬声器音量？

我正在尝试用 Python 测量扬声器的声级。这个想法是打开一个浏览器来播放声音，并且由于浏览器将音频输出到默认扬声器，因此使用 sounddevice

测量该声音

但是，我无法让它工作。这是我到目前为止的代码

import sounddevice as sd
import numpy as np

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

deviceInfo = sd.query_devices(kind='output')
print(deviceInfo)

sd.default.device = deviceInfo


with sd.OutputStream(callback=print_sound,device=deviceInfo['index']):
    sd.sleep(10000)

我被抛出这个错误：

{'name': 'Speakers (Realtek High Definiti','hostapi': 0,'max_input_channels': 0,'max_output_channels': 2,'default_low_input_latency': 0.09,'default_low_output_latency': 0.09,'default_high_input_latency': 0.18,'default_high_output_latency': 0.18,'default_samplerate': 44100.0}
Traceback (most recent call last):
  File "c:\Users\MyUser\Desktop\MyProjects\MainRecorderScript\venv\lib\site-packages\sounddevice.py",line 2710,in _split
    invalue,outvalue = value
ValueError: too many values to unpack (expected 2)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "c:\Users\MyUser\Desktop\MyProjects\MainRecorderScript\sound_device_test.py",line 11,in <module>
    sd.default.device = deviceInfo
  File "c:\Users\MyUser\Desktop\MyProjects\MainRecorderScript\venv\lib\site-packages\sounddevice.py",line 2170,in __setattr__
    getattr(self,name)._pair[:] = _split(value)
  File "c:\Users\MyUser\Desktop\MyProjects\MainRecorderScript\venv\lib\site-packages\sounddevice.py",line 2714,in _split
    raise ValueError('Only single values and pairs are allowed') from e
ValueError: Only single values and pairs are allowed

我不想指定一个字符串来命名默认扬声器，因为这会从 PC 移动到 PC，所以我希望捕获默认扬声器。不会插入麦克风

编辑：作为参考，我尝试修改此脚本 How to read realtime microphone audio volume in python and ffmpeg or similar