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Next: Streaming Audio (and video) Up: MPEG Audio Compression Previous: MPEG Layers

Effectiveness of MPEG audio

-------------------------------------------------------------------- 
Layer      Target     Ratio    Quality @    Quality @    Theoretical
           bitrate             64 kbits     128 kbits    Min. Delay
--------------------------------------------------------------------
Layer 1   192 kbit     4:1       ---          ---          19 ms  
Layer 2   128 kbit     6:1    2.1 to 2.6       4+          35 ms   
Layer 3    64 kbit    12:1    3.6 to 3.8       4+          59 ms    
--------------------------------------------------------------------



Dave Marshall
10/4/2001