class DSP::SincFilter
- DSP::SincFilter
- Reference
- Object
Overview
Windowed sinc filter. Implements lowpass and highpass. A bandpass and bandstop filter would be implemented using two of these.
Theoretical source: http://www.labbookpages.co.uk/audio/firWindowing.html
@author James Tunnell
Defined in:
dsp/filtering/fir/sinc_filter.crConstructors
-
.new(order : Int32, sample_rate : Float64, cutoff : Float64, window_class : DSP::Windows::Window.class)
Given a filter order, cutoff frequency, sample rate, and window class, develop a FIR filter kernel that can be used for lowpass filtering.
Instance Method Summary
- #cutoff : Float64
-
#highpass(input)
Process the input with the highpass FIR.
- #highpass_fir : DSP::FirFilter
-
#lowpass(input)
Process the input with the lowpass FIR.
- #lowpass_fir : DSP::FirFilter
- #order : Int32
- #sample_rate : Float64
- #window_class : DSP::Windows::Window.class
Constructor Detail
def self.new(order : Int32, sample_rate : Float64, cutoff : Float64, window_class : DSP::Windows::Window.class)
#
Given a filter order, cutoff frequency, sample rate, and window class, develop a FIR filter kernel that can be used for lowpass filtering.
Instance Method Detail
def highpass(input)
#
Process the input with the highpass FIR. @return [Array] containing the filtered input.
def lowpass(input)
#
Process the input with the lowpass FIR. @return [Array] containing the filtered input.