ぎゃく高速 こうそくフーリエ変換 へんかんじゃないです
gyakukōsokufūriehenkanjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 逆高速フーリエ変換

1. It's not an inverse fast Fourier transform.

Negative
Polite
Casual Register
Mathematics