00269nam a2200109Ia 4500008004100000041000800041082001600049100002200065245004600087260001900133365000700152230303s9999    xx            000 0 und d  aeng  a621.382 JOH  aJOHNSON (JOHNY R)  aIntroduction to Digital Signal Processing  aNew DelhibPHI  cRS