| To drive a stroboscope from an audio signal, the signal must first be reduced to its low-frequency component. This can be done with the...
| To drive a stroboscope from an audio signal, the signal must first be reduced to its low-frequency component. This can be done with the...
| The diagram shows how a three-phase sine wave oscillator can be built with a single Type UAF42 state-variable filter and some resistors an...
| To make a certain musical instrument in a group stand out, a so-called presence filter is normally used. Unfortunately, the types usuall...
| An important function of digital audio signal processing is the generation of reverberation and echo. This instalment looks at how ech...
| In audio engineering there is often a requirement for a filter that either passes or blocks certain frequencies or frequency ranges. This re...
| Double T filters are used in many circiuts. This type of filter can be made into a perfect band-stop filter, at least in theory. In the...