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arXiv 1806.08686cs.SDcs.AIeess.AS
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基于学习区间表示的音乐预测模型

A Predictive Model for Music Based on Learned Interval Representations

Institute of Computational Perception, JKU Linz(林茨约翰·开普勒大学计算感知研究所);Sony Computer Science Laboratories (CSL)(索尼计算机科学实验室)

Stefan Lattner, Maarten Grachten, Gerhard Widmer

摘要:

连接主义序列模型(例如,应用于音乐序列的RNN)存在两个已知问题:首先,它们具有严格的“绝对音高感知”。因此,它们不能概括通常根据音高之间的相对距离感知的音乐概念(例如,旋律、音阶类型、调式、节奏或和弦类型)。第二,他们没有抓住重复和音乐形式的概念。在本文中,我们介绍了经常性的门控自动编码器(RGAE),一个经常性的神经网络,学习和操作的音乐序列的间隔表示。相对音高建模增加了泛化并降低了输入数据中的稀疏性。此外,它可以学习复制和移位操作的序列(即音乐片段的色彩转置副本)-学习音乐重复结构的有前途的能力。我们发现,RGAE提高了一般连接序列模型在学习预测单声道旋律的最新技术水平,相对和绝对音乐处理模型的合奏明显提高了结果。此外,我们表明,RGAE的相对音高处理自然有利于学习和复制和移位操作序列的生成,因此,RGAE大大优于一个共同的绝对音高递归神经网络在这项任务上。

英文摘要:

Connectionist sequence models (e.g., RNNs) applied to musical sequences suffer from two known problems: First, they have strictly "absolute pitch perception". Therefore, they fail to generalize over musical concepts which are commonly perceived in terms of relative distances between pitches (e.g., melodies, scale types, modes, cadences, or chord types). Second, they fall short of capturing the concepts of repetition and musical form. In this paper we introduce the recurrent gated autoencoder (RGAE), a recurrent neural network which learns and operates on interval representations of musical sequences. The relative pitch modeling increases generalization and reduces sparsity in the input data. Furthermore, it can learn sequences of copy-and-shift operations (i.e. chromatically transposed copies of musical fragments)---a promising capability for learning musical repetition structure. We show that the RGAE improves the state of the art for general connectionist sequence models in learning to predict monophonic melodies, and that ensembles of relative and absolute music processing models improve the results appreciably. Furthermore, we show that the relative pitch processing of the RGAE naturally facilitates the learning and the generation of sequences of copy-and-shift operations, wherefore the RGAE greatly outperforms a common absolute pitch recurrent neural network on this task.

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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