Brown Noise

Need some help concentrating in the midst of life’s often chaotic soundtrack? Try Brown Noise.

About 30 minutes ago the gentleman who shares an office with us came in with four of his clients. Paper thin walls, raised voices and a bit of my ADD, and suddenly I was getting nothing done. And, 25 minutes ago I was back to work. All thanks to Brown Noise. Here, try some. It will help you focus on what I’m writing… (
I’m sure you have heard of white noise. You may know it by its street name, static. It’s the sound you may have heard when you tune a radio station to an empty station. And, it’s what you get when each frequency of the audio spectrum is filled with random noise.
But, when you filter that noise so that there’s more bass than there is treble, you get a sound which has amazing properties for blocking out other sounds. That’s brown noise. It helps if you have speakers with a bit of bass response to them, but it will work on just about anything. If you followed my link in the first paragraph, you are experiencing this now. Try it in different environments, on speakers or headphones.
So enjoy! And, stay focused.

If you have work to do you can get back to it. But, because we are a bunch of techies at Steel Town Tech (who knew?) I have to finish the blog with a bit of math:
Noise is just random energy getting produced at different frequencies. But, we experience sounds in octaves. We hear a sound as being an octave higher than another sound if its frequency doubles. Going from 30-60Hz is an octave and so is going from 5,000-10,000Hz (5-10KHz). Now because noise is generated evenly for every frequency each octave sounds louder than the one before it. There are 60 1Hz steps from 30-60Hz, but 5,000 from 5-10KHz. Because there’s more energy per octave as we move up the scale, white noise sounds like high pitched hiss. It’s actually getting 3dB louder with every rising octave.
In between white and brown noise is pink noise. It adds a -3dB/octave filter which cancels out the natural increase in volume as frequency rises. Then end result is static that is the same volume at all frequencies.
Finally, brown noise is generated with a -6dB/octave filter so it is actually halving in volume with every octave it goes up in frequency. And, what you are left with is an amazing concentration tool.
Surprise Twist Ending: Even though similar to its cousins pink noise and white noise, brown noise isn’t named after a color. It’s after Robert Brown, the physicist who theorized Brownian Motion (more info at Wikipedia).
Now, how many of you ended up reading a dry math part because you could concentrate after putting on some Brown noise. I know that’s how I got to the end of writing this. And, the 25 minutes since my noisy neighbors arrived has been put to some productive use!

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