The Fourier Analysis – Fourier Transform
https://www.electronics-lab.com/article/the-fourier-analysis-part-2/
Introduction In the first part of the “Fourier Analysis” article, we have focused on the properties and usages of the Fourier series. We have seen the power of Fourier series as a tool for both decomposing and constructing general periodic functions in terms of “pure” sines and cosines. The physical world, however, is full of […]
Introduction to Signals and Systems Analysis
https://www.electronics-lab.com/article/introduction-to-signals-and-systems-analysis/
What is a Signal? One of the definitions of ‘signal‘ in the Merriam-Webster dictionary is: “A detectable physical quantity or impulse (as a voltage, current, or magnetic field strength) by which messages or information can be transmitted from a source to a destination.” A signal is simply a function, i.e., a mathematical relationship in which […]
Audio Spectrum Indicator and Digital Clock with Remote Control
https://www.electronics-lab.com/audio-spectrum-indicator-and-digital-clock-with-remote-control/
Remember those good old days when everyone had those giant sound systems in their living room? Besides the inconvenience of the CDs, the sound experience was extremely fun, and they’re always was a small star in the show: the small screen with the VU animations. Unfortunately, they fell into the pile of old electronics, often […]
Harmonics
https://www.electronics-lab.com/article/harmonics/
Introduction Periodic signals are not always perfect sinusoidal patterns such as presented in one of our previous tutorials about Sinusoidal Waveforms. Sometimes, signals can indeed be a superposition of simple sine waves and they are known as complex waveforms. In this tutorial, we will focus on complex periodic waveforms to understand what they consist of […]
PC based Spectrometer using AS7265X spectrum sensors
https://www.electronics-lab.com/pc-based-spectrometer-using-as7265x-spectrum-sensors/
Our friends on open-electronics.org published a new project based on AS7265X spectrum sensors family. by Boris Landoni After this introduction we enter into the merits of the project, which consists in developing a PC spectrometer obtained by connecting to the USB port (which is now a standard for Personal Computers and “mobile” devices such as […]