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What bitrates are used?

bitrates Used
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What bitrates are used?

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Standard ATRAC (“SP”) is 292kbps, LP2 is ~132kbps, LP4 is ~66kbps. The LP mode bitrates are not simply 146kbps (292/2) and 73kbps (292/4) for this reason: In LP2 and LP4 modes 20 bytes of dummy data per 212 byte soundgroup are used to keep compatibility with SP mode, making them appear as normal ATRAC soundgroups containing silence. This allows LP2/4 tracks to play as silence on non-MDLP equipment. The intention is that older MD units should not produce random digital noise when playing LP tracks.

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the bitrates switches far more often than winamp displays it…but if they’d show it in real time you wouldn’t see anything but some numbers moving up and down like crazy…

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