This noise generator has an adjustable bandwidth and a consistent amplitude no matter what bandwidth is selected. When working on a recent Design Idea for an adjustable filter, I wanted to use an ...

This sample code uses 2 core. Maincore takes in charge of Signal Processing, Subcore-1 takes in charge of Visualization. To make the software understand easily and simply, these programs are made by ...

How microcontrollers and single-board computers coordinate high-speed RF acquisition and generation. How SCPI and UART commands let simple controllers use advanced measurements without FPGA ...

esp32-arduino-demos is an early-stage MIT reference (release v0.1.2) for ESP32-WROOM (16 MB Flash, Arduino only) integrating PCM1808 I2S (48 kHz), FFT low-band energy detection (tunable thresholds), ...

Sound direction detection is a fascinating concept in robotics and automation. It allows a device to "hear" and determine the direction of a sound. This concept has numerous applications, including ...

This is a two-part series where DI authors Damian and Phoenix Bonicatto explore the IQ signal representation and negative frequencies. Part 1 explains the commonly used SDR IQ signal representation ...

Abstract: This paper discusses the design and testing of a low-cost Power Quality Analyzer. A low-cost Power Quality Analyzer is based on Arduino Mega 2560 was introduced. A voltage conditioning ...

In this article, we investigate what goes into running a daunting math task such as FFT on an Espressif ESP32 development board, admittedly with a little help from a library, a Pmod I2S2 module, and a ...

An interesting aspect of time-varying waveforms is that by using a trick called a Fourier Transform (FT), they can be represented as the sum of their underlying frequencies. This mathematical insight ...

When you spend a lot of time on the computer doing certain more specialised tasks (no, we’re not talking about browsing cat memes on twitter) you start to think that your basic trackpad or mouse is, ...