irfilter

Syntax

irfilter(dep_vec, FIR_coeffs, [,IIR_coeffs])

Argument

dep_vec: An input vector.
FIR_coeffs: A vector indicating the Finite Impulse Response filter coefficients.
[,IIR_coeffs]: An optional parameter, a vector, that specifies the Infinite Impulse Response filter coefficients.; If IIR coefficients are supplied, the leading term is assumed to be 1.

Example

Curve Math Vectors	Result
`x = c1.x` `y = irfilter(c1.y,{1,3,5})`	Given c1, a curve is created which is the original curve filtered using the filter specified by the coefficients.

Comments

The result is a vector with the same number of elements as dep_vec. The result is obtained by convolving the source data with the filter coefficients using the following equation: (1)

where:

a_i is the i^th value of the IIR coefficients

b_i is the i^th value of the FIR coefficients

N is the number of IIR coefficients

M is the number of FIR coefficients

a₀ is assumed to equal 1 and is omitted from the IIR coefficient vector.