New answers tagged finite-impulse-response
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Is it possible to design a digital filter to remove the ripple in the passband,
Yes, but.
In addition to the difficulty that Hilmar mentions, just pertaining to finding a filter, if you try this you'll find that a real analog filter also varies from part to part, and over temperature, aging, etc.
So if your need is critical, and you're designing for ...
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Is it possible to design a digital filter to remove the ripple in the passband
Yes, but it's difficult and it also depends on the specific filter and the exact requirements of your application.
Generally this can be done by designing either and IIR of FIR filter with a least square error optimization method using the inverse filter as a target. The tricky ...
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In the windowing design method for FIR filters, the impulse response for the desired frequency response filter is selected with a window. Typically the desired frequency response is a rectangular function in frequency (a brickwall filter, pass a group of frequencies and block the rest), in which case the ideal impulse response is a Sinc function. In this ...
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Yes, you can design FIR filter of any finite order.
You can re-write the examples by multiplying Z in the numerator and denominator to get:
$$\frac{1}{2}\frac{(z+1)}{z}$$
Where it is clearer that you have only one zero and one pole. Therefore, this filter is of first order.
In stable and causal FIR filters the order is given by the number of poles, and these ...
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