Audio Signal Processing Studio Remote Lab for Signals and Systems Class
H.M. Ho, Florian Misoc · 2015
In this paper, an innovative approach to teach audio signal processing is presented, and the associated lab apparatus is described. This method has the feel of real-time hardware lab, with the added benefit of enabling online learning. Usually, the traditional labs for Signals and Systems courses consist of MATLAB or Labview batch simulation exercises. While this approach is essential, it doesn’t achieve the experience of watching signals and spectrum floating in real-time on the oscilloscope’s screen. The proposed approach is based on building an audio signal processing studio using Simulink (laptop) with external input from sources such as microphone, electric guitar, and a digital music files. The course includes a large section covering audio signal characteristics, special effects such as reverberation, distortion and flanger, and noise filtering. It enables distance learning because the only required lab hardware is the computer system and software.