Active noise cancelling

Thread Starter

cooltafel

Joined Mar 20, 2018
5
Hello,

Can somebody help me?
I am searching for some good noise cancelling circuits.
I browsed the internet and found couple of projects, but those aren't the real thing.
For example: http://www4.ncsu.edu/~rsmith/MA574_S15/silence.pdf

The experts (manufacturers) use the BT chip csr8645.
I know the chip has the possibility to cancel noise. https://www.qualcomm.com/products/catalog?filters=JTdCJTIyZmllbGRfcHJvZHVjdF9hdWRpb190ZWNobm9sb2d5XzIzNTc4Om5hbWUlMjI6JTVCJTIyUXVhbGNvbW0lQzIlQUUlMjBjVmMlRTIlODQlQTIlMjBhdWRpbyUyMHRlY2hub2xvZ3klMjIlNUQlN0Q=

Could someone help me finding a circuit?

Thanks in advance!

(other good ideas for noise cancelling circuits are welcome)
 

-live wire-

Joined Dec 22, 2017
885
Here is a good video on the subject.
It is very difficult, so maybe go with more passive noise cancellation. Or just....
 

Thread Starter

cooltafel

Joined Mar 20, 2018
5
Thanks for the replies.

I have already seen the video's from electroboom. Very interesting.

I would like to make active noise cancelling for my broken headphones. I thought recycling is a good idea.

The problem is that I cant find any circuit for the csr8645 chip for ANC.
 
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