Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (18): 198-200.
• 图形、图像、模式识别 • Previous Articles Next Articles
WANG Feng,ZHANG Xueying,LI Bingnan
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王 峰,张雪英,李炳男
Abstract: Chord recognition is always an important theoretical construct of analysis key and automatic label,it plays role of understanding the structure,transcribing the note,even to identify melody in music.This paper proposes a new chord recognition approach based MPCP(Mel Pitch Class Profile) and CRFs(Conditional Random Fields) by music theory and signal processing.It applies STFT to get a spectrum from music,and generates MPCP as a new feature,finally recognizes chord by CRFs.The experimental results show that the new method is better than others,and prove our strategy to be quite promising.
Key words: chord recognition, Pitch Class Profile(PCP), Mel PCP, Conditional Random Fields(CRFs)
摘要: 和弦识别是音乐调式分析和自动标注的基础,同时在分析音乐的结构和旋律方面有着非常重要的作用。结合音乐理论和信号处理知识,提出一种基于MPCP(Mel Pitch Class Profile)特征和CRFs(Conditional Random Fields)模型的和弦识别方法。利用短时傅里叶变换(STFT)对音乐信号进行时频变换,定义了一种新的MPCP特征,最后用CRFs对和弦进行识别。实验结果表明,提出的方法在识别率上优于其他方法,具有一定的潜力。
关键词: 和弦识别, 音级轮廓, Mel音级轮廓, 条件随机场
WANG Feng,ZHANG Xueying,LI Bingnan. Research of chord recognition based on MPCP and CRFs[J]. Computer Engineering and Applications, 2011, 47(18): 198-200.
王 峰,张雪英,李炳男. 基于CRFs和MPCP特征的和弦识别研究[J]. 计算机工程与应用, 2011, 47(18): 198-200.
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http://cea.ceaj.org/EN/Y2011/V47/I18/198