Engineering
Edit the introduction & A Brief History on Noise Cancellation and correct all grammar mistakes.
– I provide 2 pdf files as source. Please use them to work site A Brief History on Noise Cancellation section. in each pdf files, I highlighted the paragraph that matches what I wrote so you know how to site them.
– I provided you a picture that has outlines of what needed to be in A Brief History on Noise Cancellation section