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Short for “Adaptive TRansform Acoustic Coding
3 plus”, ATRAC3plus is an enhancement of ATRAC3 that incorporates advanced
audio compression technology. This new technology analyzes longer periods of audio
signals to obtain more precise information of the input signals. This technology
also introduces a newly developed algorithm which achieves optimal bit allocation
for a wide range of audio signals. As a result, high quality sound is achieved
at high compression levels of 1/20 the original sound source. |
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A technology is used which doubles the compression
ratio compared to ATRAC3 without loss in sound quality
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Improved compression with minimal loss in sound quality is achieved through the
analysis of audio signals in a division of 16 sub-bands. |
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High quality sound is maintained by enabling concentrated bit allocation to a
channel with higher power. |
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