An iterative subspace-based multi-pitch estimation algorithm

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• 作者：Johan Xi Zhang ; Mads Græ ; sbø ; ll Christensen ; Sø ; ren Holdt Jensen ; Marc Moonen
• 关键词：Multi-pitch estimation ; Noise subspace ; Orthogonality ; Cyclic minimizer
• 刊名：Signal Processing
• 出版年：2011
• 出版时间：January 2011
• 年：2011
• 卷：91
• 期：1
• 页码：150-154
• 全文大小：304 K

文摘

In this paper, we present an iterative method for estimation of pitches from signals containing multiple sources using subspace techniques. The resulting estimator is termed Iterative Harmonic MUltiple SIgnal Classification (I-HMUSIC). Different modifications of I-HMUSIC are proposed that improve upon the classical MUSIC algorithm, including a computationally efficient method for noise subspace updating I-HMUSIC and its modifications are evaluated and compared with both the Cramér–Rao lower bound (CRLB) and non-iterative HMUSIC; good statistical performances have been obtained.