Get an audio sample as float number from pyaudio-stream

Question

As I am currently about to build a device based on a Raspberry Pi for measuring some stuff from noise recorded with a sound card (e.g. variance), and trying to do this withi

Answer 1

Try use "numpy.fromstring" function to replace "struct.unpack":

import numpy
stream = p.open(format=FORMAT,channels=1,rate=SAMPLEFREQ,input=True,frames_per_buffer=FRAMESIZE)
data = stream.read(NOFFRAMES*FRAMESIZE)
decoded = numpy.fromstring(data, 'Float32');

let me know if this works for you