Digital Signal Processing Windowing 72070644 Rectangular window Rectangular

Digital Signal Processing Windowing 72070644 최혜원

Rectangular window

Rectangular window

Bartlett window

Bartlett window

Hanning window

Hanning Window

Hamming window

Hamming window

General function

Compared windowing * Matlab의 wintool 사용

주로 사용되는 Windowing Function 윈도우종류 전이대역폭 최소 저지대역 감쇠 Rectangular 21 d. B Bartlett 26 d. B Hanning 44 d. B Hamming 54 d. B

Signal에 따른 Windowing function의 사용 window Rectangular Hanning Hamming Type of signal l pseudorandom excitation spectral analysis l separation of two tones with frequencies very close to each other but with almost equal amplitudes l l l random excitation spectral analysis Sine wave or combination of sine waves narrowband random signal (vibration data) Unknown content General purpose applications l Closely spaced sine waves l FIR filter design