Last year, an audio notch filter with adjustable frequency was published in Elektor. To complete the audio measuring station, Elektor 3-4/2025 presents an audio generator with a high quality whose ...

solve Helmholtz equation with Absorbing Boundary Conditions (ABC) using NGSolve. # The computational domain is [-2, 2]. @param maxh: the max diameter of triangle mesh in each subdomain. @param ...

At first, an oversized coaxial Cherenkov generator with a profiled and extended slow wave structure is used to generate a time-frequency-modulated pulse with power of several tens of GW and duration ...

Generate test tones for radio audio level alignment Calibration and testing of sound equipment or speakers Reference tone generation for tuning musical instruments Demonstration of audio ...

This project describes the possibility of using a Raspberry Pi, which is connected to a microphone and headphones, to make ...

The imminent decoupling of Estonia's electricity grid and its synchronization with the mainland European grid has led to a surge in purchases of home generators, many of them costing hundreds, or even ...

Find out more about how we test. With the NordPass password generator, you can quickly create new passwords both online and within the NordPass password management app. It supports the generation ...

In practice, one of the most recent incidents was in 2021, when approximately 3 GW of power were unexpectedly lost in Poland, ...

typost is a typing test game that lets you measure your typing speed and accuracy.

The frequency illusion, also called the Baader-Meinhof phenomenon, is a cognitive bias in which someone learns a novel word or concept—and then “suddenly” encounters it everywhere ...

Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. Executive Editor David ...