Play sounds like 528Hz from a smartphone.Place a crystal on top of it.Does any change actually occur in the "sound" coming from the smartphone?This is something I have been curious about for a long ...

Let’s start our expla nations of loudspeaker measurement graphs with the most basic graph of a speaker’s behavior: the frequency response. Sometimes this is referred to as the amplitude response as ...

Attenuation - the reduction of an electrical signal. Audio frequency - the acoustic spectrum of human hearing, generally regarded to be between 20 Hz and 20 kHz. Baffle - a board or other planar ...

Companies have rapidly deployed VoIP technology to reduce operational costs and increase productivity by integrating telecom services with other enterprise workflows. However, the codecs most widely ...

All wireless connectivity is based on electromagnetic frequencies, with different parts of the frequency spectrum being used for different purposes, such as 5G or 2G. The precise way in which this is ...

A slick spectrum analyzer used to be the kind of thing that would have been tricky to include in a DIY project, but as [Mirko “mircemk” Pavleski] demonstrates, a modern microcontroller like the ESP32 ...

Spectrum is everything when it comes to choosing or designing wireless equipment. Knowledge of the electromagnetic (EM) spectrum is essential for all engineers working with wireless equipment and ...