比较全面的资料：Julius Orion Smith III, SPECTRAL AUDIO SIGNAL PROCESSING, Ch. Spectrum Analysis of Sinusoids。
典型非线性回归问题的解法
- Wikipedia.org最小二乘法（least square）的介绍
- Cleve Moler, Numerical Computing with MATLAB, Ch.5
- Henri Gavin, Levenberg-Marquardt method: introduction and examples, CE 281: Experimental Systems, Duke University
Peak-finding by parabolic interpolation