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CONTENT FEATURE-PRESERVING AND COMPLEXITY-SCALABLE SYSTEM AND METHOD TO MODIFY TIME SCALING OF DIGITAL AUDIO SIGNALS
CONTENT FEATURE-PRESERVING AND COMPLEXITY-SCALABLE SYSTEM AND METHOD TO MODIFY TIME SCALING OF DIGITAL AUDIO SIGNALS
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机译:内容特征保留和可伸缩性缩放的数字音频信号时间缩放系统和方法
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摘要
A time-domain system and method of modifying the time scale of digital audio signals includes a pre-processor. The pre-processor forms a synthesized signal for processing with minimum computation and that has optional features to give preference to certain audio channels and/or frequency bands, a mechanism of adaptively characterizing the temporal features of the synthesized signal by its normalized power and zero-crossing count, and a mechanism of identifying a segment of the synthesized signal where the time scale can be modified without introducing artifacts or losing content.
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