I am in the process of implementing a Fixed-Point Fast Fourier Transform. The Fixed-Point FFT requires mathematical background in the area of wavelets and lifting schemes.
What are good resources/pre-requisites in order to learn wavelet theory? I have dived head first onto lifting schemes, but quickly realized that I am lacking in the mathematical background.
My math background goes all the way to Differential Equations to Discrete Math with some proofs. Would like to get a perspective on what I should know first before I do wavelet theory.