Electrical and Computer Engineering Department Main MenuBradley University Main Web Site for Prospective Students for Current Students for Our Alumni for Faculty Contact Information Faculty Directory Senior Projects Labs and Research Areas Useful links ECE Department Home Page Senior Projects


Digital Audio Processing
Brad Caldwell and Mike Pinkel
Advisors: Dr. T. L. Stewart and Dr. D. R. Schertz

The function of an audio crossover network is to divide an audio signal into separate frequency bands which then may be amplified and fed into suitable speakers for each band. Traditionally, this has been done in the analog world using passive components. In this project the crossover function is performed in the digital domain. Operating in the digital domain has many advantages with the main one being flexibility, since no hardware changes are needed to alter the filter characteristics, only code modifications. An audio signal is sampled using an A/D converter, transferred into a microprocessor where digital filtering takes place, passed on to three D/A converters, one for each band, and finally amplified. Serial converters and the Motorola 6816 micro-controller board are used for hardware.

[an error occurred while processing this directive]
[Prospective Students] [Current Students] [Alumni] [Faculty]
[Home] [Contact us] [Curriculum] [Senior Projects] [Research] [People] [Links]
Copyright (c)1995-2013 Bradley University. All rights reserved.
. .