Class: SPCore::BartlettHannWindow

Inherits:
Object
  • Object
show all
Defined in:
lib/spcore/windows/bartlett_hann_window.rb

Overview

For more info, see en.wikipedia.org/wiki/Window_function#Bartlett.E2.80.93Hann_window.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(size) ⇒ BartlettHannWindow

Returns a new instance of BartlettHannWindow.



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# File 'lib/spcore/windows/bartlett_hann_window.rb', line 6

def initialize size
  @data = Array.new(size)
  a0, a1, a2 = 0.62, 0.48, 0.38
  
  size.times do |n|
    @data[n] = a0 - (a1 * ((n.to_f / (size - 1)) - 0.5).abs) - (a2 * Math::cos((TWO_PI * n)/(size - 1)))
  end
end

Instance Attribute Details

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/spcore/windows/bartlett_hann_window.rb', line 5

def data
  @data
end