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New Technologies in ATRAC3plus
High quality sound is maintained even with increased compression due to a higher level of signal analysis and more effective coding.
Band Division Filter
Band Division Filter
Optimal processing is performed on signals that change over time in each sub-band by splitting input signals into 16 sub-bands.
The filter used here can operate at high speeds and uses 20% less operating power than conventional filters.
Time/Frequency Transform
The transform block size has been lengthened to twice that of a conventional block size, thereby providing higher coding efficiency.
This enables the compression of signals with almost no loss in quality.
Block diagram
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