Digital Filters and the Smithsonian's National Air

and the Smithsonian's National Air and Space Museum

drawing class

symmetrical ice-ray

Linear Congruences

and the text traces their similarity and significance to the symbolism found in religious paintings

Digital Filters and the Smithsonian's National AirDigital signals occur in an increasing number of applications: in telephone communications; in radio, television, and stereo sound systems; and in spacecraft transmissions, to name just a few. This introductory text examines digital filtering, the processes of smoothing, predicting, differentiating, integrating, and separating signals, as well as the removal of noise from a signal. The processes bear particular relevance to computer applications, one