Outline2Fourier Transform Part IIIFourier TransformApplicationFilterModulation/Demodulation
FILTER3Filtering: useful part of a signal is separated fromundesirableThe range of frequencies that pass through a filter is calledthepass-band, whereas the frequencies that do not passthrough the filter is referred to as thestop-band.The most common types of filters are: High-pass filter, Low-pass filter, Band-pass filter, band stop filter
High-Pass Filter (HPF)4Characterized by a stop-band that extends fromtoand a pass-band that extends fromtoinfinity, whereis the cutoff frequency of the filter.0ccc
Low-Pass Filter (LPF)5Characterized by a pass-band that extends fromtoand a stop-band that extends fromto infinity.0cc
Example 1:Application of High Pass Filter62 signals have been multiplied together that yields:Assume a certain application requires;, which can be obtained using HPF.