Class: Digiproc::RectangularWindow

Inherits:

WindowStrategy

• Object
• WindowStrategy
• Digiproc::RectangularWindow

Defined in:

lib/strategies/window/rectangular_window.rb

Overview

A basic ReactangularWindow used when making a digital filter

Constant Summary

Constants inherited from WindowStrategy

WindowStrategy::PI

Instance Attribute Summary

Attributes inherited from WindowStrategy

#data, #equation, #size, #values

Instance Method Summary

• #find_size(freq) ⇒ Object

  Find the size given an input frequency in rad/s.

• #initialize(size:) ⇒ RectangularWindow constructor

  Initialize with a size: Integer Number of datapoints.

• #transition_width ⇒ Object

  Return the transition width based on the @size.

Methods inherited from WindowStrategy

#calculate, #make_odd, #to_signal

Constructor Details

#initialize(size:) ⇒ RectangularWindow

Initialize with a size: Integer Number of datapoints

# File 'lib/strategies/window/rectangular_window.rb', line 7

def initialize(size: )
    super(size: size)
    calculate
end

Instance Method Details

#find_size(freq) ⇒ Object

Find the size given an input frequency in rad/s

# File 'lib/strategies/window/rectangular_window.rb', line 13

def find_size(freq)
    size = 0.9 / freq
    make_odd(size.ceil)
end

#transition_width ⇒ Object

Return the transition width based on the @size

# File 'lib/strategies/window/rectangular_window.rb', line 19

def transition_width
    0.9 / @size
end