Digital signal processing

I am looking for someone who is well skilled in solving problems related to
1. Fourier series and transformation
2. Discrete Fourier Transform
3. Practical aspects of Fourier transformation
4. Laplace transformation + Transfer function
5. Z transform of discrete systems
6. Design of analog prototype filter
7. Design of discrete filters
8. Wavelet transformation
9. 2D wavelets and wavelet packets
10. Statistical processing of stochastic signals

(10 simple questions)
My budget is 35$