This audio noise filter circuit is a bandpass filter for audio frequency band. It filters unwanted signals that are lower or higher than the audio frequencies. It has 2 filters: a low pass filter and ...

Most universal radio receivers have a very wide bandwidth that is not particulary for radio amateurs. The better models with narrower bandwith are almost always priced higher, too high for the reach ...

All audio systems, including those installed in , SUVs, and trucks are engineered to handle specific ranges of sound frequencies. These range differences explain why some speakers have slightly ...

Download Volume 3 of the Bob Pease eBook series. This morning, some darned kid engineer (rather bright for a 15-year-old!) asked me if I could show him anywhere he could add a little narrow-band boost ...

I have been reading the discussion about reducing AM audio frequency response to 5 kHz. First Clear Channel implemented it, then Crawford. Now even Radio World has endorsed it. In this editorial I ...

Advancements in spin-wave filters could revolutionize 6G communication, providing flexible RF front ends with superior ...