3.1 Introduction3.2 Correlation3.3 The Discrete Fourier Transform (DFT)3.4 Redundancy in the DFT3.5 The FFT Algorithm3.6 Amplitude and Phase Spectra3.7 The Inverse DFT3.8 Properties of the DFT3.9 Continuous Transforms, Linear Systems, and Convolution3.10 The Sampling Theorem3.11 Waveform Reconstruction and Aliasing3.12 Resampling3.13 Nonuniform and Log-Spaced SamplingExercisesReferencesFurther Reading