: 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, you can.](https://denoize.com) But it is expensive and limited in response. For large spaces it is easier and cheaper to install passive noise cancelling (which can be very good when the space is big).

Some cars use active noise cancellation using the cars’ sound systems. But we’ve used passive noise cancellation for decades with great results. Buicks offer up their QuietTuning technology, for example. In this case, active is still more expensive, but the weight savings are significant in comparison to passive solutions.