Time-scale modification changes the duration of one audio signal by regularly duplicating or discarding small pieces of the original signal.
变时间不变调音效处理是通过有规律地复制或删除信号小片段以改变音频信号的长度。
参考来源 - 基于扩频技术的时域音频水印的研究与改进·2,447,543篇论文数据，部分数据来源于NoteExpress
PSOLA, a popular algorithm for time-scale modification, has heavy computation, which is very difficult for on - ling operation.
目前的PSOLA算法进行时长调整时，其计算量大，很难实现实时变速不变调处理。
The experimental results show the proposed algorithm with high robustness against common audio signal processing, MP3 compression, time-scale modification and random cropping.
实验证明该算法具有较强的鲁棒性，可以抵抗普通的信号处理、MP3压缩、时间尺度修改和随机裁剪等攻击。
The main shortcomings of this watermarking are the low embedding rate and the lack of robustness to synchronization attacks (such as time-scale modification and pitch-scale modification).
该类水印的主要缺点是：嵌入率较低以及对同步（例如变时间和变调处理）等某些攻击的鲁棒性较差。
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