Low-pass filter

Imagine you are listening to a song on the radio and sometimes the music can be too loud, especially when the singer is singing in a high pitch. To make the song sound better you can use a low-pass filter. It's like a special tool that only allows the low sounds or frequencies to pass through while blocking out the high ones.

Think of the sound like a bunch of different colors on a light spectrum, like a rainbow. The low sounds have colors like red and orange, while the high sounds are like blue and purple. The low-pass filter acts like a filter that only lets the red and orange colors through, while blocking out the blue and purple colors.

So when you use a low-pass filter on the song you were listening to on the radio, it will only let the low sounds or frequencies through, like the drums and bass, which can make the song sound smoother or less harsh. This filtering technique can be useful in many things like protecting your ears from hearing loud high-pitch sounds, or even in electronic devices, where it can clean up noisy signals and remove unwanted frequencies.