L2_A
離散時間傅立葉轉換：定義
DTFT (Discrete Time Fourier Transform), definition
L2_B
離散時間傅立葉轉換：性質 (1)
DTFT, properties (1)
L2_C
離散時間傅立葉轉換：性質 (2)
DTFT, properties (2) [00:00-06:50]
L2_D
線性非時變系統 (1)
LTI (Linear Time-Invariant) System (1) [06:50-]
L2_E
#實作2：離散傅立葉轉換不同方式的實作方法
Lab2: Different DFT implementations:
matrix computation and FFT
matrix computation and FFT
