Frequency estimation by DFT interpolation
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Date
2009-04-30T10:23:11Z
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Abstract
This article comments on a frequency estimator which was proposed by
[1] and shows empirically that it exhibits a much larger mean squared error than a well known frequency estimator by [2]. It is demonstrated that by using a heuristical adjustment [3] the performance can be greatly improved. Furthermore, references to two modern techniques are given, which both nearly attain the Cramér-Rao bound for this estimation problem.
[1] U. Ligges. Transkription monophoner Gesangszeitreihen. PhD thesis, TU Dortmund,
2006.
[2] B. G. Quinn. Estimating frequency by interpolation using Fourier coefficients.
Signal Processing, IEEE Transactions on, 42(5):1264-1268, May 1994.
[3] E. Jacobsen. Frequency estimation page. www.ericjacobsen.org/fe2/fe2.htm.