1. Introduction to Filters and Filter Design Software
2. Analog Filter Approximation Functions
3. Analog Lowpass, Highpass, Bandpass, and Bandstop Filters
4. Analog Filter Implementation Using Active Filters
5. Introduction to Discrete-Time Systems
6. Infinite Impulse Response Digital Filter Design
7. Finite Impulse Response Digital Filter Design
8. Digital Filter Implementation Using C
9. Digital Filtering Using the FFT
Appendix A :Technical References
Appendix B: Filter Design Software and C Code
Appendix C :Filter Design Using C
Appendix D :C Code for Normalized Approximation Functions
Appendix E :C Code for Unnormalized Approximation Functions
Appendix F :C Code for Active Filter Implementation
Appendix G :C Code for IIR Filter Design
Appendix H :C Code for FIR Filter Design
Appendix I :Filtering Sound Files