Hydrogenaudio Forums > Why MPEG1 and MPEG2 Layer3 have different Frame Length?

Full Version: Why MPEG1 and MPEG2 Layer3 have different Frame Length?

Hydrogenaudio Forums > Lossy Audio Compression > MP3 > MP3 - Tech

lunaric

Mar 28 2007, 19:28

What I heard is that the difference between MPEG1 and MPEG2 Layer3 is MPEG2 support lower sampling rate and multi-channel audio.

But why is the frame length of MPEG2 layer3 half shorter than that of MPEG1 layer3?

Is there specific reason for this?

Thanks in advance!
Yue

menno

Mar 28 2007, 23:49

Probably to keep the number of synchronization points (headers) per second equal.

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