Howtosignalprocessing
- What is anti imaging filter in multirate signal processing?
- What is the need for anti imaging filter after up sampling a signal?
What is anti imaging filter in multirate signal processing?
Anti-Imaging filter : Low pass filter removes image frequencies created by the rate increase to yield y[n]. Interpolation by a factor of 'L'
What is the need for anti imaging filter after up sampling a signal?
An "anti - aliasing" or "anti-imaging" channel / filter is set before the A-to-D converter, to counteract / prevent flag frequencies more noteworthy than a large portion of the testing rate from being digitized, which would create pictures at undesirable frequencies.
