Re: The "This is what I've learned today." Thread
This class (digital signal processing) has also provided some good real world stuff. The professor was good to relate concepts to say CD recordings, like why your audio CD is made up from 44,000 samples per second of whatever music you're listening to. Your CD player has to know that rate in order to accurately reproduce the music.
Very simply, you have to take the highest frequency used (for audio approximately 15 kHz), doubling it, and then adding some extra room to prevent any 'aliasing', which is the addition, or more accurately, some overlapping of the high frequency information.
__________________
Through with oligarchy? Ready to get the money out of politics? Want real progressives in office who will work for the people and not the donors? Want to help grow The Squad?
|