Recent content by sfpermits

There's a company Acousticontrol.com that specializes in dynamic noise cancellation in open office environments. So, an unenclosed sound source is not likely the problem.

This was in the 1950s. Probably, long, long, before you were born. But, it worked with 50s technology and, I would think, that today's electronics would be far superior. What I find odd is after scouring Google, I found nothing. So, I'm trying to revive the concept. After all, a silent drone...

Please excuse my ignorance. I'm completely new to this field. I just have a couple of questions: 1) is anyone familiar with active noise cancellation? I've "heard" it applied to a rotory lawnmower.This can't be much different, and 2) is anyone familiar with the NASA Test Prop? Wikipedia...

I saw a demonstration of active noise cancellation for a rotary lawnmower in the 1950s. I doubt this problem is more difficult, especially with today's level of electronics.