This paper addresses the problem of pitch modification, as an important module for an efficient voice transformation system. The Deterministic plus Stochastic Model of the residual signal we proposed in a previous work is compared to TDPSOLA, HNM and STRAIGHT. The four methods are compared through an important subjective test. The influence of the speaker gender and of the pitch modification ratio is analyzed. Despite its higher compression level, the DSM technique is shown to give similar or better results than other methods, especially for male speakers and important ratios of modification. The DSM turns out to be only outperformed by STRAIGHT for female voices.

中文翻译：

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变调技术的比较评价

本文解决了音高修改问题，作为高效语音转换系统的重要模块。我们在之前的工作中提出的残差信号的确定性加随机模型与 TDPSOLA、HNM 和 STRAIGHT 进行了比较。这四种方法通过一项重要的主观测试进行比较。分析了说话人性别和音高修正率的影响。尽管具有更高的压缩级别，但 DSM 技术显示出与其他方法相似或更好的结果，尤其是对于男性说话者和重要的修改比率。事实证明，对于女性声音，DSM 的表现仅优于 STRAIGHT。