They say a low-pass filter will rid you of noise in the higher frequencies. Well, this is not entirely true. It will succeed to a certain degree, but let’s take a closer look. The classical approach ...

It’s a familiar situation: You’re talking to a friend at a restaurant, and despite the background din, you still hear each other clearly. Obviously, our brains are capable of filtering out noise, but ...

Mechanical filters are easy to find close by—in a heating and air conditioning system, in a water dispenser, and under the hood of a car. Replacing an air filter after a few months shows how many ...

Noise is a common and pervasive problem in electronics design and debug. At one time or another, almost every designer and debugger of electrical circuits will spend some time dealing with ...

The sheer abundance of noise that surrounds us makes it necessary for the brain to filter out selective components so that we can focus on what we need or want to hear. This is called filtering. When ...

In a world of too much information you need something or someone to help point you toward what’s relevant, interesting, and valuable. Otherwise you’d get overwhelmed. There are a few, however, that ...