Class: SPCore::LanczosWindow
- Inherits:
-
Object
- Object
- SPCore::LanczosWindow
- Defined in:
- lib/spcore/windows/lanczos_window.rb
Overview
For more info, see en.wikipedia.org/wiki/Window_function#Lanczos_window.
Instance Attribute Summary collapse
-
#data ⇒ Object
readonly
Returns the value of attribute data.
Instance Method Summary collapse
-
#initialize(size) ⇒ LanczosWindow
constructor
A new instance of LanczosWindow.
Constructor Details
#initialize(size) ⇒ LanczosWindow
Returns a new instance of LanczosWindow.
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# File 'lib/spcore/windows/lanczos_window.rb', line 7 def initialize size @data = Array.new size sinc = lambda {|x| (Math::sin(Math::PI * x))/(Math::PI * x) } size.times do |n| @data[n] = sinc.call(((2.0*n)/(size-1)) - 1) end end |
Instance Attribute Details
#data ⇒ Object (readonly)
Returns the value of attribute data.
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# File 'lib/spcore/windows/lanczos_window.rb', line 6 def data @data end |