arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.04643cs.LGcs.SDeess.ASeess.SPstat.ML
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DDSP:可微分数字信号处理

DDSP: Differentiable Digital Signal Processing

Google Research(谷歌研究院)

Jesse Engel, Lamtharn Hantrakul, Chenjie Gu, Adam Roberts

摘要:

大多数音频生成模型直接在两个域之一生成样本:时间或频率。虽然足以表达任何信号,但这些表示是低效的,因为它们没有利用关于声音如何产生和感知的现有知识。第三种方法(声码器/合成器)成功地结合了信号处理和感知的强大领域知识,但由于有限的表达性和与现代基于自动微分的机器学习方法集成的困难,研究较少。在本文中,我们介绍了可微分数字信号处理(DDSP)库,它可以直接集成经典信号处理元素与深度学习方法。专注于音频合成,我们实现了高保真的生成,而不需要大的自回归模型或对抗性损失,这表明DDSP能够利用强归纳偏差,而不会失去神经网络的表达能力。此外,我们表明,结合可解释的模块允许操纵每个单独的模型组件,与应用程序,如独立控制的音高和响度,现实的外推到训练过程中看不到的音高,室内声学的盲去混响,提取的室内声学转移到新的环境中,和不同来源之间的音色的转换。简而言之,DDSP实现了可解释和模块化的生成建模方法,而不会牺牲深度学习的优势。该库在https://github.com/magenta/ddsp上公开,我们欢迎社区和领域专家的进一步贡献。

英文摘要:

Most generative models of audio directly generate samples in one of two domains: time or frequency. While sufficient to express any signal, these representations are inefficient, as they do not utilize existing knowledge of how sound is generated and perceived. A third approach (vocoders/synthesizers) successfully incorporates strong domain knowledge of signal processing and perception, but has been less actively researched due to limited expressivity and difficulty integrating with modern auto-differentiation-based machine learning methods. In this paper, we introduce the Differentiable Digital Signal Processing (DDSP) library, which enables direct integration of classic signal processing elements with deep learning methods. Focusing on audio synthesis, we achieve high-fidelity generation without the need for large autoregressive models or adversarial losses, demonstrating that DDSP enables utilizing strong inductive biases without losing the expressive power of neural networks. Further, we show that combining interpretable modules permits manipulation of each separate model component, with applications such as independent control of pitch and loudness, realistic extrapolation to pitches not seen during training, blind dereverberation of room acoustics, transfer of extracted room acoustics to new environments, and transformation of timbre between disparate sources. In short, DDSP enables an interpretable and modular approach to generative modeling, without sacrificing the benefits of deep learning. The library is publicly available at https://github.com/magenta/ddsp and we welcome further contributions from the community and domain experts.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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