play raw audio file in python in realtime

问题:

I have a udp server in python that continuously receives voice packets from a client in raw format, array of bytes. How can I play the voice on the server side in real time? Any recommended libraries or ways to do it?

Here is my very simple server code if needed (which I doubt)

import socket

UDP_IP = "192.168.1.105"
UDP_PORT = 5005

sock = socket.socket(socket.AF_INET, # Internet
                     socket.SOCK_DGRAM) # UDP
sock.bind((UDP_IP, UDP_PORT))

while True:
    data, addr = sock.recvfrom(1024) # buffer size is 1024 bytes
    #what to do to stream the incoming voice packets?

回答1:

PyAudio https://people.csail.mit.edu/hubert/pyaudio/

import pyaudio

p = pyaudio.PyAudio()

stream = p.open(format=pyaudio.paFloat32,
                channels=1,
                rate=44100,
                output=True)

data, addr = sock.recvfrom(1024) # buffer size is 1024 bytes

while data != '':
    stream.write(data)
    data, addr = sock.recvfrom(1024) # buffer size is 1024 bytes

stream.stop_stream()
stream.close()

p.terminate()

There is a way of using a callback method which might be better.