filter Archive
Understanding Filter Characteristics
Posted on October 4, 2011 | 2 CommentsRecently when discussing with an engineering student the characteristics of filters, it became clear that some confusion exists around this subject area. This note attempts to explain the differences between types...
Audio Equalisation Filter & Parametric Filtering
Posted on May 17, 2005 | No CommentsWhen working with audio signals a common requirement is to be able to equalise, cut or boost various frequency bands. A large number of hardware devices on the market provide...
Cleaning Up Data
Posted on September 22, 2003 | No CommentsWhen we have a very noisy signal with a large number of spikes and signal bursts then if all else fails try Median Filtering. This is a technique often used...
Data Smoothing : RC Filtering And Exponential Averaging
Posted on April 28, 2003 | 7 CommentsWhat are RC Filtering and Exponential Averaging and how do they differ? The answer to the second part of the question is that they are the same process! If one...
