00508nam a2200145 4500 0 0 0 0 fsd fsd 2021-09-02 0.00 0 621.3819582 OPP 76455 2021-09-02 00:00:00 1 2021-09-02 BK 36904 36904 9788120305328 (pbk) 621.3819582 OPP Oppenheim, Alan V. Ronald W. Schafer Digital signal processing New delhi PHI learning private limited 1975 xiv, 585 p. : ill. ; 23 cm. Include index. Digital signal processing Fourier transformations Digital filter Digital electronics Signal theory FEAS BK