I am trying to make a simple graphical application that has only one button: Record.
You press the button and recording starts. When you release the button, the recording stops and the recording is saved.
However, I get the following error when I click the button:
Traceback (most recent call last):
...
data = self.stream.read(self.CHUNK)
File (...), line 608, in read
return pa.read_stream(self._stream, num_frames, exception_on_overflow)
IOError: [Errno -9981] Input overflowed
Exception in Tkinter callback
However, I have no problem recording simple sound without a button and Tkinter (they give sample code here ).
This is the code:
import Tkinter as tk
import pyaudio, wave
class AppRecording:
def __init__(self, root):
self.root = root
self.mouse_pressed = False
recordingButton = tk.Button(root, text = "Record")
recordingButton.pack()
recordingButton.bind("<ButtonPress-1>", self.OnMouseDown)
recordingButton.bind("<ButtonRelease-1>", self.OnMouseUp)
self.CHUNK = 1024
self.FORMAT = pyaudio.paInt16
self.CHANNELS = 2
self.RATE = 44100
self.WAVE_OUTPUT_FILENAME = "output.wav"
self.p = pyaudio.PyAudio()
try: self.stream = self.p.open(format=self.FORMAT,
channels=self.CHANNELS,
rate=self.RATE,
input=True,
frames_per_buffer=self.CHUNK)
except:
raise Exception("There is no connected microphone. Check that you connect to the left hole if you have a PC.")
return None
self.frames = []
def recordFrame(self):
try:
data = self.stream.read(self.CHUNK)
print "after try"
except IOError as ex:
print "inside except"
if ex[1] != pyaudio.paInputOverflowed:
print "before raise"
raise
print "after raise"
data = '\x00' * self.CHUNK
self.frames.append(data)
def finishRecording(self):
self.stream.stop_stream()
self.stream.close()
self.p.terminate()
wf = wave.open(self.WAVE_OUTPUT_FILENAME, 'wb')
wf.setnchannels(self.CHANNELS)
wf.setsampwidth(self.p.get_sample_size(self.FORMAT))
wf.setframerate(self.RATE)
wf.writeframes(b''.join(self.frames))
wf.close()
def OnMouseDown(self, event):
self.mouse_pressed = True
self.poll()
def OnMouseUp(self, event):
self.root.after_cancel(self.after_id)
print "Finished recording!"
self.finishRecording()
def poll(self):
if self.mouse_pressed:
self.recordFrame()
self.after_id = self.root.after(1, self.poll)
root=tk.Tk()
app = AppRecording(root)
root.mainloop()
I tried to change self.CHUNKand self.RATE. The internal microphone of my iMac says that the speed is 44100. In some places I read that I need to change the piece or the cost of the course, I tried both, but no one helped. Elsewhere I was told to addexcept IOError as ex: (...)
PyAudio Version: 0.2.10
pyaudio.get_portaudio_version(): 1246720
pyaudio.get_portaudio_version_text(): PortAudio V19.6.0-devel, 396fe4b6699ae929d3a685b3ef8a7e97396139a4
Tkinter.__version__: $: 81008 $
, !