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  ______   _    _     ____       ___     _____    
 /_   _// | || | ||  |  _ \\    / _ \\  |  __ \\  
   | ||   | || | ||  | |_| ||  / //\ \\ | |  \ || 
  _| ||   | \\_/ ||  | .  //  |  ___  ||| |__/ || 
 /__//     \____//   |_|\_\\  |_||  |_|||_____//  
 `--`       `---`    `-` --`  `-`   `-`  -----`

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Text this: Zeros of linear phase FIR filter with piecewise constant frequency response