From: Earle Clubb <eclubb@...>
Date: 2007-05-08T05:42:58+09:00
Subject: ulaw audio over network

Does anyone know of a good way to stream ulaw audio (read from a file)
over a UDP socket?  I have something (mostly) working, but I can't seem
to get the packet timing right.  If I use a 10ms sleep, the packets end
up being ~12ms apart.  However, if I use a lower value (say 8ms), the
packets are 8ms apart.  The code I'm using is included below.  Has
anyone done this or something similar?

Thanks,
Earle


Code:
require 'socket'

@audio_socket = UDPSocket.open
@audio_socket.connect("239.1.1.3", 4098)

def send_audio(filename)
  data = ""

  File.open(filename) do |file|
    while file.read(80, data)
      @audio_socket.send(data, 0)
      sleep 0.01
    end
  end
end

send_audio(ARGV[0])

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