Abstract:

This work presents a flexible and powerful toolkit specially designed to improve the digital audio signal acknowledgement. It offers a friendly and easy-to-use graphical interface planned to provide flexibility in its operation, easing the student learning. This toolkit is used by students of the Telecommunication Engineering Degree at the University of Jaén (SPAIN).

It offers a powerful toolkit for self-learning, where the student can practice theoretical concepts explained in digital audio subjects, as well as doing practical exercises, personalizing them (the input signal and its parameters can be changed, as well as the functional block constraints, simulating new systems). It allows the students to learn using the trial and error method. They can simulate the same system without limits, and choose the most significant parameters to simulate them as much as they want.

The tool works in the Matlab/Simulink platform. Simulink incorporates a wide variety of building blocks, which can be used to develop complex simulations of a wide range of systems. We have developed different models that provide the student examples of typical applications of digital audio system: compressor, echo generation, revert, vibrato, flanging, etc. In some cases we have used the blockset incorporated in Simulink and in others, we have built new blocks to implement the desired audio systems.

Keywords:

Matlab, Simulink, audio, digital, signal processing, audio effect, sound.