用信号处理分析音频音高，自动判断音乐调性。
Understanding the Algorithm Behind Audio Key Detection
- 通过数字信号处理提取音频的音高特征。
- 将特征与理论调性模板比对，确定音乐调性。
- 适合音乐信息检索和智能音乐系统研究者。
音乐调性确定是音乐理论与感知中的基础问题，为旋律和和弦进行提供和声背景。自动化这一过程，即自动调性检测，是音乐信息检索（MIR）领域的重要任务。本文提出一种算法方法，通过数字信号处理技术分析音频的音高内容，并与理论调性模型进行比较，实现对音频录音调性的估计。
原文摘要 · Abstract (English)
The determination of musical key is a fundamental aspect of music theory and perception, providing a harmonic context for melodies and chord progressions. Automating this process, known as automatic key detection, is a significant task in the field of Music Information Retrieval (MIR). This article outlines an algorithmic methodology for estimating the musical key of an audio recording by analyzing its tonal content through digital signal processing techniques and comparison with theoretical key profiles.
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