title: Bandwidth for audio stream for the mobile client
body: <p>1/ I would like to know if I am computing (with rough precision) the bandwidth for MP3/AAC audio stream correctly. Parameters of the stream are:</p>
  
  <pre><code>Sample rate: 44100,  
  Bitrate: 128bit
  Channels: 2,
  Stream type: icecast (no metadata)
  Codecs used: MP3 or AAC
  </code></pre>
  
  <p>The raw audio would be: <code>44100*128*2 = 11289600 bits/sec = 11025 kbit/sec = ~10.8 MBit/sec</code>. I will count with <strong>10:1 compression ratio</strong> (which I think can be more or less correct - but please correct me, if I am wrong) then approx. <strong>1 Megabit/sec</strong> should be enough.</p>
  
  <p>2/ Is the computation correct? Because this means that for GPRS (~80 kbps), EDGE (~230kbps), UMTS (~384kbps) it does not make sense to even try those streams. If my computation is correct, then the only technology would be then the HDSPA, which starts on ~1.8 Mbps.</p>
  
  <p>3/ Can someone give me good parameters for the streaming for the mobile audio streaming?</p>
  
  <p>Thanks a lot 
  BR
  STeN</p>