: could you use noise canceling on a speaker?

Question

Could you make a speaker “play” noice canceling to make a cafe, or other noisy enviroment quiet?
Also, could this be used in another interesting way?

In: 67

Answer 1

Yes, this technology is commonly used in office environments. It’s called noise masking. It’s the same essential concept as a white noise machine and sounds a bit like an HVAC system blowing air.

There are more advanced versions used in secure rooms, often in tandom with EM signal blocking and extreme acoustic damping insulation.