∫-ττⅇ-ⅈ⁢t⁢ω⁢ϕn⁡(t)⁢ⅆ⁡t=(-ⅈ)n⁢2⁢π⁢τ⁢Λnσ⁢ϕn⁡(τσ⁢ω),