构建日式偶像团体音乐数据集，用于歌声分离等技术评测
IdolSongsJp Corpus: A Multi-Singer Song Corpus in the Style of Japanese Idol Groups
- 委托专业作曲人创作15首日式偶像风格歌曲
- 含混音音频、分轨、干声及和弦标注，支持多任务评测
- 适合研究歌声分离、和弦识别等音乐信息处理的学者
日本偶像团体是日本流行文化的重要组成部分，常在演唱会和电视节目中以歌舞表演活跃观众。其音乐涵盖多种风格，包含复杂和弦进行与乐器编排，多使用多轨录制与高响度母带处理，并普遍采用成员交替独唱与合唱的结构（utawari）。这些特点使其成为评估歌声分离、音乐源分离、自动和弦估计等技术的理想基准。为此，我们构建了名为IdolSongsJp的歌曲语料库，通过委托专业作曲人创作15首具有典型日式偶像风格的原创歌曲。该语料库包含经过母带处理的音频、可用于源分离的分轨、干声人声轨道及精确的和弦标注。本文详细描述了语料库构造过程，通过与真实偶像歌曲对比展示其多样性，并验证其在多项音乐信息处理任务中的应用价值。
原文摘要 · Abstract (English)
Japanese idol groups, comprising performers known as "idols," are an indispensable part of Japanese pop culture. They frequently appear in live concerts and television programs, entertaining audiences with their singing and dancing. Similar to other J-pop songs, idol group music covers a wide range of styles, with various types of chord progressions and instrumental arrangements. These tracks often feature numerous instruments and employ complex mastering techniques, resulting in high signal loudness. Additionally, most songs include a song division (utawari) structure, in which members alternate between singing solos and performing together. Hence, these songs are well-suited for benchmarking various music information processing techniques such as singer diarization, music source separation, and automatic chord estimation under challenging conditions. Focusing on these characteristics, we constructed a song corpus titled IdolSongsJp by commissioning professional composers to create 15 tracks in the style of Japanese idol groups. This corpus includes not only mastered audio tracks but also stems for music source separation, dry vocal tracks, and chord annotations. This paper provides a detailed description of the corpus, demonstrates its diversity through comparisons with real-world idol group songs, and presents its application in evaluating several music information processing techniques.
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