Analog signal processing includes filters, shaping circuits, combiners, and amplifiers to change their shape and modify the content of analog signals. Audio signals contain a wide range of frequencies ...

The frequency of this signal is many times greater than the frequency of the audio wave. This signal will "carry" the audio signal over the air. An antenna picks up the the radio wave. If the ...

The first is to never run a power cable across or near audio or video signal cables, including antenna wires. Modern signal cables are well shielded, but if you’re getting hum and it’s not a ...