System object: dsp.ParametricEQFilter
Package: dsp

Filter input with ParametricEQFilter object



The dsp.ParametricEQFilter object will be removed in a future release. Existing instances of the object continue to run. For new code, use the multibandParametricEQ object from Audio Toolbox™ instead.


Y = step(H, X)



Starting in R2016b, instead of using the step method to perform the operation defined by the System object™, you can call the object with arguments, as if it were a function. For example, y = step(obj,x) and y = obj(x) perform equivalent operations.

Y = step(H, X) filters the real or complex input signal X using the specified filter to produce the equalized filter output Y. The filter processes each channel of the input signal (each column of X) independently over time.


obj specifies the System object on which to run this step method.

The object performs an initialization the first time the step method is executed. This initialization locks nontunable properties (MATLAB) and input specifications, such as dimensions, complexity, and data type of the input data. If you change a nontunable property or an input specification, the System object issues an error. To change nontunable properties or inputs, you must first call the release method to unlock the object.