sounddevice.PortAudioError：打开 OutputStream 时出错：内部 PortAudio 错误 [PaErrorCode -9986]

问题描述

我在 MacMojave 上并尝试在麦克风信号超过阈值时播放声音文件。我有：

import sounddevice as sd
import soundfile as sf
import numpy as np
duration = 5  # seconds


threshold = 30
filename = "./data/piano.wav"
data,fs = sf.read(filename,dtype='float32')  


def print_sound(indata,outdata,frames,time,status):
    if status:
        print(status)
    global threshold,data,fs
    volume_norm = 5*np.linalg.norm(indata)
    if volume_norm > threshold: 
        print("so loud!!!!")
        sd.play(data,fs)

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

当我运行它时，声音超过阈值，但是，它无法打开输出流，如下所示；

$python3 main.py 
input underflow
input underflow
input underflow
so loud!!!!
so loud!!!!
input overflow,output underflow
so loud!!!!
input overflow,output underflow
so loud!!!!
||PaMacCore (AUHAL)|| Error on line 1316: err=''nope'',msg=Audio Hardware: Illegal Operation
From cffi callback <function _StreamBase.__init__.<locals>.callback_ptr at 0x10caf8680>:
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sounddevice.py",line 881,in callback_ptr
    callback,idata,odata,status)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sounddevice.py",line 2678,in _wrap_callback
    callback(*args)
  File "main.py",line 17,in print_sound
    sd.play(data,fs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sounddevice.py",line 177,in play
    **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sounddevice.py",line 2578,in start_stream
    **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sounddevice.py",line 1489,in __init__
    **_remove_self(locals()))
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sounddevice.py",line 895,in __init__
    'Error opening {}'.format(self.__class__.__name__))
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/sounddevice.py",line 2738,in _check
    raise PortAudioError(errormsg,err)
sounddevice.PortAudioError: Error opening OutputStream: Internal PortAudio error [PaErrorCode -9986]

我重新启动了 iMac（Mojave），但仍然出现相同的错误。

任何帮助将不胜感激。

CS

解决方法

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