ERROR at 23:29 for low pass filters a frequencies much greater than critical frequency should read "f>>fc" and at 25:02 for high pass filters a frequencies much less than critical frequency should read "f
Something I keep thinking is missing in the EE lectures: the purpose of a filter. Cool that we can calculate all this, but why? My first thought is audio: splitting out the low frequency range for the woofer from the high frequencies of the tweeter. Cool. Also, removing static from a sensor or signal line. What else are filters used for? One minute on this would help students put everything in context
Good point, however, filters exist exactly for the reasons you specified. Passive filters can only get you so much but, as an extremely simple example, consider a radio station with a specific desired frequency. One could use a band pass filter tuned exactly for the desired frequency such that the desired frequency, and the desired frequency alone, receives maximum power and other undesirable frequencies are rejected.
ERROR at 23:29 for low pass filters a frequencies much greater than critical frequency should read "f>>fc" and at 25:02 for high pass filters a frequencies much less than critical frequency should read "f
Very Nice video. Thanks!
Something I keep thinking is missing in the EE lectures: the purpose of a filter. Cool that we can calculate all this, but why? My first thought is audio: splitting out the low frequency range for the woofer from the high frequencies of the tweeter. Cool. Also, removing static from a sensor or signal line. What else are filters used for? One minute on this would help students put everything in context
Good point, however, filters exist exactly for the reasons you specified. Passive filters can only get you so much but, as an extremely simple example, consider a radio station with a specific desired frequency. One could use a band pass filter tuned exactly for the desired frequency such that the desired frequency, and the desired frequency alone, receives maximum power and other undesirable frequencies are rejected.