PyAudio 输入溢出 -9981 - 没有解决方案工作

Question

请不要将此问题报告为重复问题，因为没有任何可用的解决方案适合我，我对它们都进行了测试

所以， 我正在尝试在我的 RaspberryPi 模型 B 板上运行 PyAudio 示例录音程序， 这是我得到的错误，

Traceback (most recent call last):
  File "/home/pi/pyaudio/test/testing.py", line 23, in <module>
    data = stream.read(chunk)
  File "/usr/local/lib/python2.7/dist-packages/pyaudio.py", line 605, in read
    return pa.read_stream(self._stream, num_frames)
IOError: [Errno Input overflowed] -9981

已经有某些解决方案可以解决许多用户的问题，但就我而言，这是不正确的。

这是我尝试过的，

首先，这里是代码，

"""PyAudio example: Record a few seconds of audio and save to a WAVE file."""

import pyaudio
import wave

CHUNK = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = "output.wav"

p = pyaudio.PyAudio()

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

print("* recording")

frames = []

for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
   data = stream.read(CHUNK)
   frames.append(data)

print("* done recording")

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

wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(b''.join(frames))
wf.close()

我也试过当前配置是否支持，

import pyaudio
p = pyaudio.PyAudio()
if p.is_format_supported(48000.0, 
    input_device=1,
    input_channels=1,
    input_format=pyaudio.paInt16):
    print 'True!'

44,000 和 44,100 都支持，但我仍然一次又一次地遇到相同的错误。

这是我的 USB 声卡设备信息，

p.get_device_info_by_index(1)

{'defaultSampleRate': 44100.0, 
'defaultLowOutputLatency': 0.011609977324263039, 
'defaultLowInputLatency': 0.011609977324263039, 
'maxInputChannels': 1L, 
'structVersion': 2L, 
'hostApi': 0L, 
'index': 1, 
'defaultHighOutputLatency': 0.046439909297052155, 
'maxOutputChannels': 2L, 
'name': u'Generic USB Audio Device: USB Audio (hw:1,0)', 
'defaultHighInputLatency': 0.046439909297052155}

有人知道为什么我仍然收到错误吗？

Answer 1

详细说明@Sidd Rajput 的答案，因为我没有明确说明这一点， 如果要导入，在脚本/项目中设置它是不够的——pyaudio.py 本身需要修改

def read(self, num_frames, exception_on_overflow=False):

^pyaudio.py v0.2.8 中的第 589/590 行：

Answer 2

我只是增加了块数，看来它有效！ 这是我的代码

import pyaudio
import wave

CHUNK = 44100  #just a big number
FORMAT = pyaudio.paInt16
CHANNELS = 1 #i found that my mic has 1 channel
RATE = 44100
RECORD_SECONDS = 5
WAVE_OUTPUT_FILENAME = "output.wav"

p = pyaudio.PyAudio()

stream = p.open(format=FORMAT,
                channels=CHANNELS,
                rate=RATE,
                input_device_index=3, #found that also
                input=True,
                frames_per_buffer=CHUNK)

print("* recording")

frames = []

for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    frames.append(data)

print("* done recording")

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

wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
wf.setnchannels(CHANNELS)
wf.setsampwidth(p.get_sample_size(FORMAT))
wf.setframerate(RATE)
wf.writeframes(b''.join(frames))
wf.close()

Answer 3

# importing modules for sound handling
# importing modules for sound handling
from sys import byteorder
from array import array
from struct import pack

import pyaudio
import wave

def audioeffect():
    CHUNK = 16 # played with, this can be 2048 1024, 512, 256 etc
    FORMAT = pyaudio.paInt16
    CHANNELS = 1
    RATE = 48000

    p = pyaudio.PyAudio()

    stream = p.open(format=FORMAT,
                channels=CHANNELS,
                rate=RATE,
                input=True,
                output=True,
                frames_per_buffer=CHUNK)
    r = array('h') # define r
    snd_data = array('h', stream.read(CHUNK)) # read sounddata from input
    r.extend(snd_data)
    stream.stop_stream()
    stream.close()
    p.terminate()
    N = 1
    SumOfSquars = 0
    for i in snd_data:  # determing the value for tel of  
        N = N +1

    # adding all quadrates
    for i in range(0, N-1):
        SumOfSquars = snd_data[i]**2
    Rms_Value = np.sqrt(SumOfSquars / N)

    #print("Rms_Value is  :", Rms_Value)
    return int(Rms_Value)

Answer 4

您是否尝试将 exception_on_overflow 设置为 False？来自 Pyaudio 文档：

read(num_frames, exception_on_overflow=True)

从流中读取样本。使用非阻塞模式时不要调用。

参数： num_frames – 要读取的帧数。 exception_on_overflow – 指定输入缓冲区溢出时是否应抛出（或静默忽略）IOError 异常。默认为真。 引发 IOError： 如果流不是输入流或读取操作不成功。 返回类型：
字符串

Answer 5

将您的块参数更改为 8192 而不是 1024。为我工作。 参考：IOError: [Errno Input overflowed] -9981