[转] ATRAC3plus vs ATRAC3 Technology

最新推荐文章于 2023-08-12 08:07:48 发布

原创最新推荐文章于 2023-08-12 08:07:48 发布 · 1k 阅读

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ATRAC3plus技术进一步提升了ATRAC3的性能，通过更精细的声音信号分析算法，能够将CD数据压缩到大约原来的1/20，同时几乎不损失音质。该技术通过对声音信号进行16频段分析，并使用更多规则来替换数字模式，从而实现更高的压缩率。

ATRAC3plus Technology

ATRAC3plus represents a further enhancement of ATRAC3, featuring a new algorithm for even more precise sound signal analysis. This enables the technology to compress CD data to approximately 1/20 its original size with almost no loss of sound quality.

Main Features

1. Analyzes sound characteristics in sixteen bands

ATRAC3 divides the sound signal into four bands to analyze sound characteristics. ATRAC3plus divides the signal into 16 bands, enabling an even more precise analysis. ATRAC3plus also uses longer analysis window than ATRAC3 to convert signals into frequency data, resulting in finer frequency resolution and allowing the technology to analyze the sound signals more precisely than ATRAC3.

2. Uses more rules to replace digital patterns

ATRAC3plus replaces patterns in the digital signal just like ATRAC3, but uses more rules for substitution to enable it to cover a wider variety of patterns. This technique has increased the rate of compression.