PyAudio Input overflowed

Question

I\'m trying to make real-time plotting sound in python. I need to get chunks from my microphone.

Using PyAudio, try to use

import pyaudio
import wav         


        

Answer 1

I had the same issue on the really slow raspberry pi, but I was able to solve it (for most cases) by using the faster array module for storing the data.

import array
import pyaudio 

FORMAT = pyaudio.paInt16
CHANNELS = 1
INPUT_CHANNEL=2
RATE = 48000
CHUNK = 512

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

print("* recording")


try:
    data = array.array('h')
    for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
        data.fromstring(stream.read(CHUNK))
finally:
    stream.stop_stream()
    stream.close()
    p.terminate()

print("* done recording")

The content of data is rather binary afterwards. But you can use numpy.array(data, dtype='i') to get a numpy array of intergers.