获取 IOError: [Errno Input overflowed] -9981 将 PyAudio Stream 输入和输出设置为 True 时 [英] Getting IOError: [Errno Input overflowed] -9981 when setting PyAudio Stream input and output to True

问题描述

我正在尝试在我的 Mac(操作系统 10.7.2)上运行以下代码(来自 PyAudio 文档的示例):

I'm trying to run the following code (an example from the PyAudio documentation) on my Mac (OS 10.7.2):

import pyaudio
import sys

chunk = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
RECORD_SECONDS = 5

p = pyaudio.PyAudio()

stream = p.open(format = FORMAT,
                channels = CHANNELS,
                rate = RATE,
                input = True,
                output = True,
                frames_per_buffer = chunk)

print "* recording"
for i in range(0, 44100 / chunk * RECORD_SECONDS):
    data = stream.read(chunk)
    stream.write(data, chunk)
print "* done"

stream.stop_stream()
stream.close()
p.terminate()

我给出的错误是:

Traceback (most recent call last):
  File "PyAudioExample.py", line 24, in <module>
data = stream.read(chunk)
  File "/Library/Python/2.7/site-packages/pyaudio.py", line 564, in read
return pa.read_stream(self._stream, num_frames)
IOError: [Errno Input overflowed] -9981

我在 Google 上搜索了此错误，发现将块变大或变小都会有所帮助.我试过了，没有什么区别.我还尝试添加以下代码来捕获重载异常:

I did a search for this error on Google and found that either making the chunk bigger or smaller could help. I tried this and it made no difference. I also tried adding in the following code to catch an overload exception:

try:
    data = stream.read(chunk)
except IOError as ex:
    if ex[1] != pyaudio.paInputOverflowed:
        raise
    data = '\x00' * chunk

这避免了错误，但我没有输出我的输入音频，而是听到了一堆响亮的咔嗒声.

That avoided the error, but instead of outputting my input audio, I heard a bunch of loud clicking.

为了排除故障，我注释掉了 output=True 行，程序运行良好，但没有输出任何内容.我注释掉 input=True 并改为读取 Wave 文件，并且流能够输出音频.我尝试创建 2 个流，一个用于输入，一个用于输出，但也没有用.

To troubleshoot, I commented out the output=True line and the program ran fine, but did not output anything. I commented out the input=True and read in a Wave file instead and the stream was able to output the audio. I tried creating 2 streams, one for input and one for output, and that didn't work either.

我还能做些什么来避免这个错误?

Is there something else that I can do to avoid this error?

推荐答案

当我手动安装 pyaudio(从源代码构建 portaudio)时，我遇到了同样的情况，一个不太完美的解决方法是下载 Apple Mac OS X(通用) 的 pyaudio安装它，它只会为 python 2.6 和以前的版本安装它.如果你用/usr/bin/python2.6 运行你的代码，那么你就完成了.但如果你真的想要 2.7，请将已安装的模块(pyaudio.py、_portaudio.so)复制到 2.7 文件夹/Library/Python/2.7/site-packages/.

i run into the same situation when i manually install pyaudio (built portaudio from source), a not so perfect workaround is to download the pyaudio for Apple Mac OS X (Universal) install it, which will only install it for python 2.6 and previous version. if you run your code with /usr/bin/python2.6, then you are done. but if you really want 2.7, copy the installed module (pyaudio.py, _portaudio.so) to the 2.7 folder /Library/Python/2.7/site-packages/.

我不知道为什么从源代码构建模块不起作用.

i donnot know why it does not work building the module from source.

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