Mobilní aplikace pro vizualizaci externího signálu na PDA zařízení v reálném čase (digitální osciloskop)

Abstract

The aim of this work is to create mobile application for visualization of the external signal on the PDA in real time. In the thesis the procedure of application development is described, recording an audio signal, its processing and subsequent render on the PDA screen at the end. The whole application runs in threads whose application is also described in the text. Part of the solution is also a short introduction to this issue and explanations of the terms such as PDA, NET Compact Framework or Windows Mobile. Furthermore, this work deals with custom components creation in C#, specifically the development of component which draws the graphs. At the end, the application was tested for different frequency of the input audio signal and the results were analysed. The result of this work is a operational component for drawing the graphs for NET Compact Framework. The great advantage of this component is its utility in other projects and applications. And the most significant result of the effort is the application of a digital oscilloscope that is able to visualize the external audio signal in a real time and accurately up to the frequency of 3000Hz.