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Why use a CIC filter?
CIC filters are designed to maximize the amount of low sample rate processing to minimize power consumption in high-speed hardware applications. Again, CIC filters require no multiplications, their arithmetic is strictly additions and subtractions.
How do you test a CIC filter?
Two Easy Ways To Test Multistage CIC Decimation Filters
- The traditional method for testing such a filter implementation is to apply to the filter a low-frequency sinusoidal xin(n) input sequence of frequency fin Hz, having N samples/cycle, and a peak amplitude of Ain.
- then the filter is operating properly.
How are cascaded integrator and comb filters used in CIC?
A CIC filter consists of one or more integrator and comb filter pairs. In the case of a decimating CIC, the input signal is fed through one or more cascaded integrators, then a down-sampler, followed by one or more comb sections (equal in number to the number of integrators).
Which is the inverse of the CIC filter?
To overcome the magnitude droop, a FIR filter that has a magnitude response that is the inverse of the CIC filter can be applied to achieve frequency response correction. Such filters are called “compensation filters.” For data rate down conversion, the compensation filter follows the CIC filter.
How is a CIC filter used in fir?
Understanding CIC Compensation Filters Introduction The cascaded integrator-com b (CIC) filter is a class of hardware-efficient linear phase finite impulse response (FIR) digital filters. CIC filters achieve sampling rate decrease (decimation) and sampling rate increase (interpolation) without using multipliers. Altera’s CIC Compiler
Which is compensation filter follows the CIC filter?
Such filters are called “compensation filters.” For data rate down conversion, the compensation filter follows the CIC filter. For up sampling systems, the compensation FIR filter pre-conditions the data and is followed by a CIC filter. In other words, the compensation filter always operates at the lower rate in a rate conversion