TY - JOUR
T1 - Off-Grid Fundamental Frequency Estimation
AU - Sward, Johan
AU - Li, Hongbin
AU - Jakobsson, Andreas
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2018/2
Y1 - 2018/2
N2 - In this paper, we propose a gridless method for estimating an unknown number of fundamental frequencies. Starting with a conventional dictionary matrix, containing sets of candidate fundamental frequencies and their corresponding harmonics, a nonconvex log-sum cost function is formed such that it imposes the harmonic structure and treats every fundamental frequency in the dictionary as a parameter. The cost function is iteratively decreased by minimizing a surrogate function, and, in each iteration, the fundamental frequencies are refined, whereas redundant parameters are omitted from the dictionary. The proposed method is tested on both real and simulated data, showing its preferred performance as compared to other state-of-the-art multipitch estimators.
AB - In this paper, we propose a gridless method for estimating an unknown number of fundamental frequencies. Starting with a conventional dictionary matrix, containing sets of candidate fundamental frequencies and their corresponding harmonics, a nonconvex log-sum cost function is formed such that it imposes the harmonic structure and treats every fundamental frequency in the dictionary as a parameter. The cost function is iteratively decreased by minimizing a surrogate function, and, in each iteration, the fundamental frequencies are refined, whereas redundant parameters are omitted from the dictionary. The proposed method is tested on both real and simulated data, showing its preferred performance as compared to other state-of-the-art multipitch estimators.
KW - Multi-Pitch estimation
KW - Terms-Grid mismatch
KW - iterative reweighted methods
KW - super-resolution
UR - http://www.scopus.com/inward/record.url?scp=85035785863&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85035785863&partnerID=8YFLogxK
U2 - 10.1109/TASLP.2017.2775800
DO - 10.1109/TASLP.2017.2775800
M3 - Article
AN - SCOPUS:85035785863
SN - 2329-9290
VL - 26
SP - 296
EP - 303
JO - IEEE/ACM Transactions on Audio Speech and Language Processing
JF - IEEE/ACM Transactions on Audio Speech and Language Processing
IS - 2
ER -