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And it’s true that when you click on a link from a QR code at your local pizza shop, the restaurant might use that digital signal to connect the dots with a pizza promotion you saw on Instagram.

These machines take the math exercise that is a digital signal and turn it into the continuous wave that is analog.

“While we have been trying our best with digital signal processing to do a really good job in Teams, we have now started using machine learning for the first time to build echo cancellation where you can truly reduce echo from all the different devices,” explains Robert Aichner, a principal program manager for intelligent conversation and communications cloud at Microsoft, in an interview with The Verge.

Daniel uses a digital signal to verify it’s Ludo’s bike, then calls the police, who help recover it.

That’s where you see us investing in CPU and DSPs — digital signal processors — and AI-processing GPU.