Which is better IIR or FIR filter?

Which is better IIR or FIR filter?

The advantage of IIR filters over FIR filters is that IIR filters usually require fewer coefficients to execute similar filtering operations, that IIR filters work faster, and require less memory space. … FIR filters are better suited for applications that require a linear phase response.

What is meant by IIR filter?

Infinite impulse response (IIR) is a property applying to many linear time-invariant systems. … Systems with this property are known as IIR systems or IIR filters, and are distinguished by having an impulse response which does not become exactly zero past a certain point, but continues indefinitely.

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What is FIR filter?

In digital signal processing, an FIR is a filter whose impulse response is of finite period, as a result of it settles to zero in finite time. … FIR filters are most popular kind of filters executed in software and these filters can be continuous time, analog or digital and discrete time.

What are the advantages of FIR filters?

Compared to IIR filters, FIR filters offer the following advantages: They can easily be designed to be “linear phase” (and usually are). Put simply, linear-phase filters delay the input signal but don't distort its phase. They are simple to implement.

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