The idea of discrete-time signal processing also refers to some theoretical self-discipline that establishes a mathematical basis for digital signal processing, with out taking quantization mistake into account. Biosignals. A biosignal is any signal in a living organism which can be continuously calculated. The time period biosignal is commonly used https://sites.gsu.edu/vjohnson30/2016/02/04/how-to-enable-comments-for-dummi-college-students/comment-page-2161/#comment-173878