[转] ATRAC3plus vs ATRAC3 Technology

最新推荐文章于 2022-12-16 20:56:56 发布

原创最新推荐文章于 2022-12-16 20:56:56 发布 · 740 阅读

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#signal #algorithm #features

ATRAC3plus技术通过更精确的声音信号分析实现了高质量的音频压缩。该技术将声音信号分为16个频带进行分析，并使用更多的规则来替换数字模式，从而实现比ATRAC3更高的压缩率，同时保持接近原始CD质量的音质。

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.