Filter Design Courses
École Polytechnique Fédérale de Lausanne via Coursera Digital Signal Processing 1: Basic Concepts and Algorithms
École Polytechnique Fédérale de Lausanne via Coursera Introduction to Data, Signal, and Image Analysis with MATLAB
Vanderbilt University via Coursera RF Design: Passive and Active Components
Purdue University via edX Networks, Signals and Systems
NPTEL via YouTube Leveraging Lists and Filters in ServiceNow
Pluralsight Digital Signal Processing Lectures, Fall 2014
Rensselaer Polytechnic Institute via YouTube