![Principles of complex wave digital filters - Fettweis - 1981 - International Journal of Circuit Theory and Applications - Wiley Online Library Principles of complex wave digital filters - Fettweis - 1981 - International Journal of Circuit Theory and Applications - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/1932f626-7811-4a47-80d5-ede9a1f6c611/cta.v49.1.cover.jpg)
Principles of complex wave digital filters - Fettweis - 1981 - International Journal of Circuit Theory and Applications - Wiley Online Library
![Digital Signal Processing: Signals, Systems, and Filters: Antoniou, Andreas: 9780071454247: Amazon.com: Books Digital Signal Processing: Signals, Systems, and Filters: Antoniou, Andreas: 9780071454247: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/513i8DXcWeL._SY344_BO1,204,203,200_.jpg)
Digital Signal Processing: Signals, Systems, and Filters: Antoniou, Andreas: 9780071454247: Amazon.com: Books
![Introduction to Digital Filters: with Audio Applications: Smith III, Julius O.: 9780974560717: Amazon.com: Books Introduction to Digital Filters: with Audio Applications: Smith III, Julius O.: 9780974560717: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/31B8qd622aL._SX331_BO1,204,203,200_.jpg)